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s-1170 series www.sii-ic.com high ripple-rejection and low dropout high output current cmos voltage regulator ? seiko instruments inc., 2003-2010 rev.4.0 _00 seiko instruments inc. 1 the s-1170 series is a positive voltage regulator with a low dropout voltage, high output voltage accuracy, and low current consumption developed based on cmos technology. a built-in low on-resistance transistor provides a low dropout voltage and large output current, a built-in overcurrent protector prevents the load current from exceeding the current capacitance of the output transistor, and a built-in thermal shutdown circuit prevents damage caused by the heat. an on/off circuit ensures a long battery life. compared with the voltage regulators using the conventional cmos pr ocess, a larger variety of capacitors are available, including small ceramic capacitors. small sot-89-5 and 6-pin hson(a) packages realize high-density mounting. ? features ? output voltage: 1.5 v to 5.5 v, selectable in 0.1 v steps. ? high-accuracy output voltage: 1.0% ? low dropout voltage: 120 mv typ. (3.0 v output product, i out = 300 ma) ? low current consumption: during operation: 80 a typ., 160 a max. during shutdown: 0.1 a typ., 1.0 a max. ? high current capability: 800 ma output is possible (at v in v out(s) + 1.0 v) *1 ? built-in on/off circuit: ensures long battery life. ? low esr capacitor can be used: a ceramic capacitor of 4.7 f or more can be used for the output capacitor. ? high ripple rejection: 70 db typ. (at 1.0 khz) ? built-in overcurrent protector: overcurrent of output trans istor can be restricted. ? built-in thermal shutdown circuit: damage caused by heat can be prevented. ? lead-free, sn 100%, halogen-free *2 *1. attention should be paid to the power dissipation of the package when the output current is large. *2. refer to ? ? product name structure ? for details. ? applications ? power supply for dvd and cd-rom drives ? power supply for battery-powered devices ? power supply for personal communication device ? power supply for note pcs ? packages ? sot-89-5 ? 6-pin hson(a)
high ripple-rejection low dropout high output current cmos voltage regulator s-1170 series rev.4.0 _00 seiko instruments inc. 2 ? block diagram vin vss vout overcurrent protector thermal shutdown circuit reference voltage circuit on/off *1. parasitic diode *1 on/off circuit figure 1
high ripple-rejection low dropout high output current cmos voltage regulator rev.4.0 _00 s-1170 series seiko instruments inc. 3 ? product name structure ? the product types, output voltage, and package types fo r the s-1170 series can be selected at the user?s request. refer to the ? 1. product name ? for the meanings of the characters in the product name, ? 2. package ? regarding the package drawings and ? 3. product name list ? for the full product names. 1. product name (1) sot-89-5 s-1170 x xx uc ? xxx tf x output voltage 15 to 55 (e.g., when the output voltage is 1.5 v, it is expressed as 15. ) package name (abbreviation) uc: sot-89-5 environmental code u: lead-free (sn 100%), halogen-free g: lead-free (for details, please contact our sales office) product type *3 a: on/off pin negative logic b: on/off pin positive logic ic direction in tape specifications *1 product name (abbreviation) *2 *1. refer to the tape specificat ions at the end of this book. *2. refer to the product name list. *3. refer to 3. shutdown pin (on/off pin) in the ? ? operation?.
high ripple-rejection low dropout high output current cmos voltage regulator s-1170 series rev.4.0 _00 seiko instruments inc. 4 (2) 6-pin hson(a) s-1170 x xx pd ? xxx tf x output voltage 15 to 55 (e.g., when the output voltage is 1.5 v, it is expressed as 15. ) package name (abbreviation) pd: 6-pin hson(a) environmental code s: lead-free, halogen-free g: lead-free (for details, please contact our sales office) product type *3 a: on/off pin negative logic b: on/off pin positive logic ic direction in tape specifications *1 product name (abbreviation) *2 *1. refer to the tape specificat ions at the end of this book. *2. refer to the product name list. *3. refer to 3. shutdown pin (on/off pin) in the ? ? operation?. 2. package drawing code package name package tape reel sot-89-5 up005-a-p-sd up005-a-c-sd up005-a-r-sd 6-pin hson(a) pd006-a-p-sd pd006-a-c-sd pd006-a-r-sd
high ripple-rejection low dropout high output current cmos voltage regulator rev.4.0 _00 s-1170 series seiko instruments inc. 5 3. product name list table 1 output voltage sot-89-5 6-pin hson(a) 1.5 v 1.0% s-1170b15uc-otatfx s-1170b15pd-otatfz 1.6 v 1.0% s-1170b16uc-otbtfx s-1170b16pd-otbtfz 1.7 v 1.0% s-1170b17uc-otctfx s-1170b17pd-otctfz 1.8 v 1.0% s-1170b18uc-otdtfx s-1170b18pd-otdtfz 1.9 v 1.0% s-1170b19uc-otetfx s-1170b19pd-otetfz 2.0 v 1.0% s-1170b20uc-otftfx s-1170b20pd-otftfz 2.1 v 1.0% s-1170b21uc-otgtfx s-1170b21pd-otgtfz 2.2 v 1.0% s-1170b22uc-othtfx s-1170b22pd-othtfz 2.3 v 1.0% s-1170b23uc-otitfx s-1170b23pd-otitfz 2.4 v 1.0% s-1170b24uc-otjtfx s-1170b24pd-otjtfz 2.5 v 1.0% s-1170b25uc-otktfx s-1170b25pd-otktfz 2.6 v 1.0% s-1170b26uc-otltfx s-1170b26pd-otltfz 2.7 v 1.0% s-1170b27uc-otmtfx s-1170b27pd-otmtfz 2.8 v 1.0% s-1170b28uc-otntfx s-1170b28pd-otntfz 2.9 v 1.0% s-1170b29uc-ototfx s-1170b29pd-ototfz 3.0 v 1.0% s-1170b30uc-otptfx s-1170b30pd-otptfz 3.1 v 1.0% s-1170b31uc-otqtfx s-1170b31pd-otqtfz 3.2 v 1.0% s-1170b32uc-otrtfx s-1170b32pd-otrtfz 3.3 v 1.0% s-1170b33uc-otstfx s-1170b33pd-otstfz 3.4 v 1.0% s-1170b34uc-otttfx s-1170b34pd-otttfz 3.5 v 1.0% s-1170b35uc-otutfx s-1170b35pd-otutfz 3.6 v 1.0% s-1170b36uc-otvtfx s-1170b36pd-otvtfz 3.7 v 1.0% s-1170b37uc-otwtfx s-1170b37pd-otwtfz 3.8 v 1.0% s-1170b38uc-otxtfx s-1170b38pd-otxtfz 3.9 v 1.0% s-1170b39uc-otytfx s-1170b39pd-otytfz 4.0 v 1.0% s-1170b40uc-otztfx s-1170b40pd-otztfz 4.1 v 1.0% s-1170b41uc-ouatfx s-1170b41pd-ouatfz 4.2 v 1.0% s-1170b42uc-oubtfx s-1170b42pd-oubtfz 4.3 v 1.0% s-1170b43uc-ouctfx s-1170b43pd-ouctfz 4.4 v 1.0% s-1170b44uc-oudtfx s-1170b44pd-oudtfz 4.5 v 1.0% s-1170b45uc-ouetfx s-1170b45pd-ouetfz 4.6 v 1.0% s-1170b46uc-ouftfx s-1170b46pd-ouftfz 4.7 v 1.0% s-1170b47uc-ougtfx s-1170b47pd-ougtfz 4.8 v 1.0% s-1170b48uc-ouhtfx s-1170b48pd-ouhtfz 4.9 v 1.0% s-1170b49uc-ouitfx s-1170b49pd-ouitfz 5.0 v 1.0% s-1170b50uc-oujtfx s-1170b50pd-oujtfz 5.1 v 1.0% s-1170b51uc-ouktfx s-1170b51pd-ouktfz 5.2 v 1.0% s-1170b52uc-oultfx s-1170b52pd-oultfz 5.3 v 1.0% s-1170b53uc-oumtfx s-1170b53pd-oumtfz 5.4 v 1.0% s-1170b54uc-ountfx s-1170b54pd-ountfz 5.5 v 1.0% s-1170b55uc-ouotfx s-1170b55pd-ouotfz remark 1. please contact the sii marketing department for products with an output voltage other than those specified above or type a products. 2. x: g or u z: g or s 3. please select products of environmental code = u for sn 100%, halogen-free products.
high ripple-rejection low dropout high output current cmos voltage regulator s-1170 series rev.4.0 _00 seiko instruments inc. 6 ? pin configuration table 2 pin no. symbol description 1 on/off shutdown pin 2 vss gnd pin 3 nc *1 no connection 4 vin input voltage pin 5 vout output voltage pin 5 4 1 3 2 sot-89-5 top view *1. the nc pin is electrically open. the nc pin can be connected to vin or vss. figure 2 table 3 pin no. symbol description 1 vout *1 output voltage pin 2 vout *1 output voltage pin 3 on/off shutdown pin 4 vss gnd pin 5 vin *2 input voltage pin 6 vin *2 input voltage pin * 1. connect the exposed thermal die pad at shadowed area to the board, and set electric potential open or vss. however, do not use it as the function of electrode. *2. be careful of the contact with other wires because the pinch lead has the same electric potential as vss. 6-pin hson(a) top view 6 5 4 1 2 3 bottom view *1 1 2 3 6 5 4 *2 *1. short pins 1 and 2. *2. short pins 5 and 6. figure 3
high ripple-rejection low dropout high output current cmos voltage regulator rev.4.0 _00 s-1170 series seiko instruments inc. 7 ? absolute maximum ratings table 4 (ta = 25 c unless otherwise specified) parameter symbol absolute maximum rating unit v in v ss ? 0.3 to v ss + 7 v input voltage v on/off v ss ? 0.3 to v in + 0.3 v output voltage v out v ss ? 0.3 to v in + 0.3 v sot-89-5 power dissipation 6-pin hson(a) p d 1000 *1 mw operating ambient temperature t opr ? 40 to + 85 c storage temperature t stg ? 40 to + 125 c *1. at mounted on printed circuit board [mounted board] (1) board size : 40 mm ?40 mm?t1.6 mm (2) cu wiring shear : 180 % at both sides caution the absolute maximum ratings are rated values exceeding which the product could suffer physical damage. these values must therefore not be exceeded under any conditions. power dissipation p d (mw) ambient temperature ta ( c) 0 50 100 150 1200 800 400 0 sot-89-5 6-pin hson(a) 1000 600 200 figure 4 power dissipation of package (mounted on printed circuit board) caution thermal shutdown circuit may operate when junction temperature is 150 c.
high ripple-rejection low dropout high output current cmos voltage regulator s-1170 series rev.4.0 _00 seiko instruments inc. 8 ? electrical characteristics table 5 (ta = 25 c unless otherwise specified) parameter symbol conditions min. typ. max. unit test circuit output voltage *1 v out(e) v in = v out(s) + 1.0 v, i out = 100 ma v out(s) 0.99 v out(s) v out(s) 1.01 v 1 output current *2 i out v in v out(s) + 1.0 v 800 *5 ? ? ma 3 dropout voltage *3 v drop i out = 300 ma v out(s) = 1.5 v ? 0.35 0.45 v 1 v out(s) = 1.6 v ? 0.30 0.35 v 1 v out(s) = 1.7 v ? 0.25 0.30 v 1 1.8 v v out(s) 2.0 v ? 0.20 0.26 v 1 2.1 v v out(s) 2.9 v ? 0.15 0.22 v 1 3.0 v v out(s) 5.5 v ? 0.12 0.18 v 1 v out1 line regulation v in ? v out v out(s) + 0.5 v v in 6.5 v, i out = 100 ma ? 0.05 0.3 % / v 1 load regulation v out2 v in = v out(s) + 1.0 v, 1.0 ma i out 300 ma ? 30 100 mv 1 v out output voltage temperature coefficient *4 ta ? v out v in = v out(s) + 1.0 v, i out = 10 ma, ? 40 c ta 85 c ? 150 ? ppm / c 1 current consumption during operation i ss1 v in = v out(s) + 1.0 v, on/off pin = on, no load ? 80 160 a 2 current consumption during shutdown i ss2 v in = v out(s) + 1.0 v, on/off pin = off, no load ? 0.1 1.0 a 2 input voltage v in ? 2.0 ? 6.5 v ? shutdown pin input voltage ?h? v sh v in = v out(s) + 1.0 v, r l = 1.0 k 1.5 ? ? v 4 shutdown pin input voltage ?l? v sl v in = v out(s) + 1.0 v, r l = 1.0 k ? ? 0.3 v 4 shutdown pin input current ?h? i sh v in = 6.5 v, v on/off = 6.5 v ? 0.1 ? 0.1 a 4 shutdown pin input current ?l? i sl v in = 6.5 v, v on/off = 0 v ? 0.1 ? 0.1 a 4 1.5 v v out(s) 3.0 v ? 70 ? db 5 ripple rejection rr v in = v out(s) + 1.0 v, f = 1.0 khz, v rip = 0.5 vrms, i out = 100 ma 3.1 v v out(s) 5.5 v ? 65 ? db 5 short-circuit current i short v in = v out(s) + 1.0 v, on/off pin = on, v out = 0 v ? 350 ? ma 3 thermal shutdown detection temperature t sd junction temperature ? 150 ? c ? thermal shutdown release temperature t sr junction temperature ? 120 ? c ?
high ripple-rejection low dropout high output current cmos voltage regulator rev.4.0 _00 s-1170 series seiko instruments inc. 9 *1. v out(s) : specified output voltage v out(e) : actual output volt age at the fixed load the output voltage when fixing i out (= 100 ma) and inputting v out(s) + 1.0 v *2. the output current at which t he output voltage becomes 95% of v out(e) after gradually increasing the output current. *3. v drop = v in1 ? (v out3 0.98) v out3 is the output voltage when v in = v out(s) + 1.0 v and i out = 300 ma. v in1 is the input voltage at which the output voltage becomes 98% of v out3 after gradually decreasing the input voltage. *4. the change in temperature [mv/c] is calculated using the following equation. [] [] [] 1000 c/ppm vta v vvc/mv ta v out out out(s) out ? ? = 3* 2* 1* *1. the change in temperatur e of the output voltage *2. specified output voltage *3. output voltage temperature coefficient *5. the output current can be at least this value. due to restrictions on the package power dissipation, this value may not be satisfi ed. attention should be paid to the power dissipation of the package when t he output current is large. this specification is guaranteed by design.
high ripple-rejection low dropout high output current cmos voltage regulator s-1170 series rev.4.0 _00 seiko instruments inc. 10 ? test circuits 1. vss vout on/off set to power on vin v a + + figure 5 2. vss vout on/off set to v in or gnd vin a + figure 6 3. set to power on vss vout on/off vin v a + + figure 7 4. vss vout on/off vin a v r l + + figure 8 5. vss vout on/off vin v + set to power on r l figure 9
high ripple-rejection low dropout high output current cmos voltage regulator rev.4.0 _00 s-1170 series seiko instruments inc. 11 ? standard circuit on/off vss vout vin c in *1 c l *2 input output gnd single gnd *1. c in is a capacitor for stabilizing the input. *2. a ceramic capacitor of 4.7 f or more can be used for c l . figure 10 caution the above connection diagram and cons tant will not guarantee successful operation. perform thorough evaluation using the actual application to set the constant. ? application conditions input capacitor (c in ): 4.7 f or more output capacitor (c l ): 4.7 f or more esr of output capacitor: 0.5 or less caution a general series regulator may oscillate , depending on the external components selected. check that no oscillation occurs with the application using the above capacitor. ? selection of input and output capacitors (c in , c l ) the s-1170 series requires an output capacitor betw een the vout and vss pins for phase compensation. a ceramic capacitor with a capacitance of 4.7 f or more provides a stable operation in all temperature ranges. when using an os capacitor, tantalum capacitor, or aluminum electrolytic capacitor, a ceramic capacitor with a capacitance of 4.7 f or more and an esr of 0.5 or less is required. the output overshoot and undershoot values, which are transient response characteristics, vary depending on the output capacitor value. the required capacit ance value for the input capacitor differs depending on the application. the recommended application values are, c in = 4.7 f or more and c l = 4.7 f or more, however, perform a thorough evaluation using the act ual device, including evaluation of temperature characteristics.
high ripple-rejection low dropout high output current cmos voltage regulator s-1170 series rev.4.0 _00 seiko instruments inc. 12 ? explanation of terms 1. low dropout voltage regulator the low dropout voltage regulator is a voltage regulat or whose dropout voltage is low due to its built-in low on-resistance transistor. 2. low esr a capacitor whose esr (equivalent series resistanc e) is low. the s-1170 series enables use of a low esr capacitor, such as a ceramic capac itor, for the output-side capacitor c l . a capacitor whose esr is 0.5 or less can be used. 3. output voltage (v out ) the accuracy of the out put voltage is ensured at 1.0% under the specified c onditions of fixed input voltage *1 , fixed output current, and fixed temperature. *1. differs depending the product. caution if the above conditions change, the output voltage value may vary and exceed the accuracy range of the output voltage. please see the electrical characteristics and attached characteristics data for details. 4. v v v regulation line out in out1 ? ? ? ? ? ? ? ? ? indicates the dependency of the output vo ltage on the input voltage. that is, the values show how much the output voltage changes due to a change in the i nput voltage with the output current remaining unchanged. 5. load regulation ( v out2 ) indicates the dependency of the output voltage on the output current. that is, the values show how much the output voltage changes due to a change in the output current with the input voltage remaining unchanged. 6. dropout voltage (v drop ) indicates the difference between the input voltage v in1 , which is the input voltage (v in ) at the point where the output voltage has fallen to 98% of the output voltage value v out3 after v in was gradually decreased from v in = v out(s) + 1.0 v, and the output voltage at that point (v out3 0.98). v drop = v in1 ? (v out3 0.98)
high ripple-rejection low dropout high output current cmos voltage regulator rev.4.0 _00 s-1170 series seiko instruments inc. 13 7. ? ? ? ? ? ? ? out out v ta v voltage output of tcoefficien e temperatur the shadowed area in figure 11 is the range where v out varies in the operating temperature range when the temperature coeffici ent of the output voltage is 150 ppm/ c. v out ( e ) *1 ex. s-1170b28 typ. ? 40 25 + 0.42 mv / c v out [v] *1. v out(e) is the value of the output voltage measured at 25 c . 85 ta [ c] ? 0.42 mv / c figure 11 a change in the temperature of the output voltage [m v/c] is calculated using the following equation. [] [] [] 1000 c/ppm vta v vvc/mv ta v out out out(s) out ? ? = 3* 2* 1* *1. change in temperature of output voltage *2. specified output voltage *3. output voltage temperature coefficient
high ripple-rejection low dropout high output current cmos voltage regulator s-1170 series rev.4.0 _00 seiko instruments inc. 14 ? operation 1. basic operation figure 12 shows the block diagram of the s-1170 series. the error amplifier compares the reference voltage (v ref ) with v fb , which is the output voltage resistance- divided by feedback resistors r s and r f . it supplies the output transistor with the gate voltage necessary to ensure a certain output voltage free of any fluctuations of input voltage and temperature. reference voltage circuit vout *1 *1. parasitic diode vss vin r s r f error amplifier current supply v ref ? + v fb figure 12 2. output transistor the s-1170 series uses a low on-resistance p- channel mos fet as the output transistor. be sure that v out does not exceed v in + 0.3 v to prevent the voltage regulator from being damaged due to inverse current flowing from vout pin through a parasitic diode to vin pin.
high ripple-rejection low dropout high output current cmos voltage regulator rev.4.0 _00 s-1170 series seiko instruments inc. 15 3. shutdown pin (on/off pin) this pin starts and stops the regulator. when the on/off pin is set to the shutdown level, the operation of all internal circuits stops, and the built- in p-channel mos fet output transistor between the vin pin and vout pin is turned off to substantially reduce the current consumption. the vout pin becomes the v ss level due to the internally divided resistance of several hundreds k between the vout pin and vss pin. the structure of the on/off pin is as shown in figure 13 . since the on/off pin is neither pulled down nor pulled up internally, do not use it in the floating st ate. in addition, note that the current consumption increases if a voltage of 0.3 v to v in ? 0.3 v is applied to the on/off pin. when the on/off pin is not used, connect it to the vss pin if the logic ty pe is ?a? and to the vin pin if it is ?b?. table 6 logic type on/off pin internal circuits vout pin voltage current consumption a ?l?: power on operating set value i ss1 a ?h?: power off stopped v ss level i ss2 b ?l?: power off stopped v ss level i ss2 b ?h?: power on operating set value i ss1 vss on/off vin figure 13
high ripple-rejection low dropout high output current cmos voltage regulator s-1170 series rev.4.0 _00 seiko instruments inc. 16 4. t hermal shutdown circuit the s-1170 series implements a thermal shutdown ci rcuit to protect the device from damage due to overheating. when the junction temperature rises to 150 c (typ.), the thermal shutdown circuit operates and the regulator operation stops. when the junction temperature drops to 120 c (typ.), the thermal shutdown circuit is released and the regulator operation resumes. if the thermal shutdown circuit starts operating due to self-heating, the regulat or operation stops and the output voltage falls. when the regulator operat ion has stopped, no self-heat is generated and the temperature of the ic is lowered. when the tem perature has dropped, the thermal shutdown circuit is released, the regulator operation resumes, and self-heat is generated again. by repeating this procedure, the output voltage waveform forms pulses. this phenomenon, stopping and resuming the regulator operation, continues until the inter nal power consumption is reduced by reducing either the input voltage or output current or both, or t he ambient temperature is lowered. table 7 thermal shutdown circuit vout pin voltage operating: 150 c (typ.) v ss level released: 120 c (typ.) set value
high ripple-rejection low dropout high output current cmos voltage regulator rev.4.0 _00 s-1170 series seiko instruments inc. 17 ? precautions ? wiring patterns for the vin, vout and gnd pins should be designed so that the impedance is low. when mounting an output capacitor between the vout and vss pins (c l ) and a capacitor for stabilizing the input between vin and vss pins (c in ), the distance from the capacit ors to these pins should be as short as possible. ? note that the output voltage may increase when a series regulator is used at low load current (1.0 ma or less). ? generally a series regulator may cause oscillati on, depending on the selection of external parts. the following conditions are recommended for this ic. howe ver, be sure to perform sufficient evaluation under the actual usage conditions for selection, incl uding evaluation of temper ature characteristics. input capacitor (c in ): 4.7 f or more output capacitor (c l ): 4.7 f or more equivalent series resistance (esr): 0.5 or less ? the voltage regulator may oscillate when the im pedance of the power supply is high and the input capacitor is small or an input capacitor is not connected. ? the application conditions for the input voltage, output voltage, and load curr ent should not exceed the package power dissipation. ? do not apply an electrostatic discharge to this ic that exceeds the performanc e ratings of the built-in electrostatic protection circuit. ? in determining the output current, attention should be paid to the output current value specified in table 5 in the ? ? electrical characteristics? and footnote *5 of the table. ? sii claims no responsibility for any disputes arising out of or in connection with any infringement by products including this ic of patents owned by a third party.
high ripple-rejection low dropout high output current cmos voltage regulator s-1170 series rev.4.0 _00 seiko instruments inc. 18 ? typical characteristics (1) output voltage vs. output cu rrent (when load current increases) s-1170b15 (ta = 25 c) s-1170b30 (ta = 25 c) v out [v] 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 0 200 400 600 800 1000 1200 v in = 2.0 v 2.5 v 6.5 v v out [v] 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 400 600 800 1000 2000 1200 v in = 3.5 v 4.0 v 6.5 v i out [ma] i out [ma] s-1170b50 (ta = 25 c) v out [v] 6 5 4 3 2 1 0 400 600 800 200 0 1000 1200 v in = 5.5 v 6.0 v 6.5 v i out [ma] remark in determining the output current, attention should be paid to the following. 1) the minimum output current value and footnote *5 in the ? ? electrical characteristics ? 2) the package power dissipation (2) output voltage vs. input voltage s-1170b15 (ta = 25 c) s-1170b30 (ta = 25 c) v out [v] 1.6 1.5 1.4 1.3 1.2 1.1 1.0 3.5 3.0 2.5 2.0 1.5 1.0 i out = 1 ma 10 ma 100 ma 300 ma v out [v] 3.1 3.0 2.9 2.8 2.7 2.6 2.5 5.0 4.5 4.0 3.5 3.0 2.5 i out = 1 ma 10 ma 100 ma 300 ma v in [v] v in [v] s-1170b50 (ta = 25 c) v out [v] 5.1 5.0 4.9 4.8 4.7 4.6 4.5 7.0 6.5 6.0 5.5 5.0 4.5 i out = 1 ma 10 ma 100 ma 300 ma v in [v]
high ripple-rejection low dropout high output current cmos voltage regulator rev.4.0 _00 s-1170 series seiko instruments inc. 19 (3) dropout voltage vs. output current s-1170b15 s-1170b30 v drop [v] 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0 100 400 600 900 200 300 500 700 800 ? 40 c 25 c 85 c v drop [v] 0.6 0.5 0.4 0.3 0.2 0.1 0 0 100 400 600 900 200 300 500 700 800 ? 40 c 25 c 85 c i out [ma] i out [ma] s-1170b50 v drop [v] 0.6 0.5 0.4 0.3 0.2 0.1 0 0 100 400 600 900 200 300 500 700 800 ? 40 c 25 c 85 c i out [ma] (4) dropout voltage vs. set output voltage v drop [v] 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 1 2 3 4 5 6 0 600 ma 800 ma 300 ma 10 ma v ota [v]
high ripple-rejection low dropout high output current cmos voltage regulator s-1170 series rev.4.0 _00 seiko instruments inc. 20 (5) output voltage vs. ambient temperature s-1170b15 (i out = 10 ma) s-1170b30 (i out = 10 ma) v out(e) [v] 1.70 1.65 1.60 1.55 1.50 1.45 1.40 1.35 1.30 25 ? 25 75 85 ? 40 0 50 v out(e) [v] 3.20 3.15 3.10 3.05 3.00 2.95 2.90 2.85 2.80 25 ? 25 75 85 ? 40 0 50 ta [ c] ta [ c] s-1170b50 (i out = 10 ma) v out(e) [v] 5.20 5.15 5.10 5.05 5.00 4 .95 4 .90 4 .85 4 .80 25 ? 25 75 85 ? 40 0 50 ta [ c] (6) current consumption vs. input voltage s-1170b15 (ta = 25 c) s-1170b30 (ta = 25 c) i ss1 [ a] 80 70 60 50 40 30 20 10 0 6 4 2 0 1 3 5 7 i ss1 [ a] 80 70 60 50 40 30 20 10 0 6 4 2 0 1 3 5 7 v in [v] v in [v] s-1170b50 (ta = 25 c) i ss1 [ a] 80 70 60 50 40 30 20 10 0 6 4 2 0 1 3 5 7 v in [v]
high ripple-rejection low dropout high output current cmos voltage regulator rev.4.0 _00 s-1170 series seiko instruments inc. 21 (7) ripple rejection s-1170b15 (ta = 25 c) s-1170b30 (ta = 25 c) v in = 2.5 v, c out = 4.7 f v in = 4.0 v, c out = 4.7 f ripple rejection [db] 1m 100 80 60 40 20 0 100 1k 10k 100k 10 i out = 50 ma 100 ma ripple rejection [db] 1m 100 80 60 40 20 0 100 1k 10k 100k 10 i out = 50 ma 100 ma frequency [hz] frequency [hz] s-1170b50 (ta = 25 c) v in = 6.0 v, c out = 4.7 f ripple rejection [db] 1m 100 80 60 40 20 0 100 1k 10k 100k 10 i out = 50 ma 100 ma frequency [hz]
high ripple-rejection low dropout high output current cmos voltage regulator s-1170 series rev.4.0 _00 seiko instruments inc. 22 ? reference data (1) input transient response characteristics s-1170b15 s-1170b30 i out = 100 ma, tr = tf = 5.0 s, c out = 4.7 f, c in = 4.7 f i out = 100 ma, tr = tf = 5.0 s, c out = 4.7 f, c in = 4.7 f v out [v] ? 20 ? 10 0 10 20 30 40 50 60 1.62 1.60 1.58 1.56 1.54 1.52 1.50 1.48 1.46 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 v in v out v in [v] v out [v] ? 20 ? 10 0 10 20 30 40 50 60 3.08 3.06 3.04 3.02 3.00 2.98 2.96 6.0 5.0 4.0 3.0 2.0 1.0 0 v in v out v in [v] t [ s] t [ s] s-1170b50 i out = 100 ma, tr = tf = 5.0 s, c out = 4.7 f, c in = 4.7 f v out [v] ? 20 ? 10 0 10 20 30 40 50 60 5.12 5.10 5.08 5.06 5.04 5.02 5.00 4.98 4.96 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0 v in v out v in [v] t [ s] (2) load transient response characteristics s-1170b15 (ta = 25 c) s-1170b30 (ta = 25 c) v in = 2.5 v, c out = 4.7 f, c in = 4.7 f, i out = 50? 100 ma v in = 4.0 v, c out = 4.7 f, c in = 4.7 f, i out = 50? 100 ma v out [v] 1.70 1.65 1.60 1.55 1.50 1.45 1.40 150 100 50 0 ? 50 ? 100 ? 150 0 20 40 60 80 100 120 140 ? 20 160 i out v out i out [ma] v out [v] 150 100 50 0 ? 50 ? 100 ? 150 3.20 3.15 3.10 3.05 3.00 2.95 2.90 0 20 40 60 80 100 120 140 ? 20 160 i out v out i out [ma] t [ s] t [ s] s-1170b50 (ta = 25 c) v in = 6.0 v, c out = 4.7 f, c in = 4.7 f, i out = 50? 100 ma v out [v] 5.20 5.15 5.10 5.05 5.00 4.95 4.90 150 100 50 0 ? 50 ? 100 ? 150 0 20 40 60 80 100 120 140 ? 20 160 v out i out i out [ma] t [ s]
high ripple-rejection low dropout high output current cmos voltage regulator rev.4.0 _00 s-1170 series seiko instruments inc. 23 (3) shutdown pin transient response characteristics s-1170b15 (ta = 25 c) s-1170b30 (ta = 25 c) v in = 2.5 v, c out = 4.7 f, c in = 4.7 f, i out = 100 ma v in = 4.0 v, c out = 4.7 f, c in = 4.7 f, i out = 100 ma v out [v] 3 2 1 0 ? 1 ? 2 ? 3 5 4 3 2 1 0 ? 1 0 10 20 30 40 50 60 70 ? 10 80 90 v on/off v out v on/off [v] v out [v] 6 4 2 0 ? 2 ? 4 ? 6 7 6 5 4 3 2 1 0 ? 1 0 10 20 30 40 50 60 70 ? 10 80 90 v on/off v out v on/off [v] t [ s] t [ s] s-1170b50 (ta = 25 c) v in = 6.0 v, c out = 4.7 f, c in = 4.7 f, i out = 100 ma v out [v] 6 3 0 ? 3 ? 6 9 7 5 3 1 ? 1 0 10 20 30 40 50 60 70 ? 10 80 90 v on/off v out v on/off [v] t [ s] s-1170b15 (ta = 25 c) s-1170b30 (ta = 25 c) v in = 2.5 v, c out = 4.7 f, c in = 4.7 f, i out = 300 ma v in = 4.0 v, c out = 4.7 f, c in = 4.7 f, i out = 300 ma v out [v] 3 2 1 0 ? 1 ? 2 ? 3 5 4 3 2 1 0 ? 1 0 10 20 30 40 50 60 70 ? 10 80 90 v on/off v out v on/off [v] v out [v] 6 4 2 0 ? 2 ? 4 ? 6 7 6 5 4 3 2 1 0 ? 1 0 10 20 30 40 50 60 70 ? 10 80 90 v on/off v out v on/off [v] t [ s] t [ s] s-1170b50 (ta = 25 c) v in = 6.0 v, c out = 4.7 f, c in = 4.7 f, i out = 300 ma v out [v] 6 3 0 ? 3 ? 6 9 7 5 3 1 ? 1 0 10 20 30 40 50 60 70 ? 10 80 90 v on/off v out v on/off [v] t [ s]

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www.sii-ic.com ? the information described herein is subject to change without notice. ? seiko instruments inc. is not responsible for any pr oblems caused by circuits or diagrams described herein whose related industrial properties, patents, or ot her rights belong to third parties. the application circuit examples explain typical applications of the products, and do not guarant ee the success of any specific mass-production design. ? when the products described herein are regulated produ cts subject to the wassenaar arrangement or other agreements, they may not be exported without authoriz ation from the appropriate governmental authority. ? use of the information described he rein for other purposes and/or repr oduction or copying without the express permission of seiko instrum ents inc. is strictly prohibited. ? the products described herein cannot be used as par t of any device or equipment affecting the human body, such as exercise equipment, medical equipment, security systems, gas equipment, or any apparatus installed in airplanes and other vehicles, without prior written permission of seiko instruments inc. ? although seiko instruments inc. exerts the greatest possible effort to ensure high quality and reliability, the failure or malfunction of semiconductor products may oc cur. the user of these products should therefore give thorough consideration to safety design, including redundancy, fire-prevention measures, and malfunction prevention, to prevent any accidents, fires, or community damage that may ensue.

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