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s-1323 series www.sii-ic.com high ripple-rejection and small package cmos voltage regulator ? seiko instruments inc., 2002-2010 rev.5.0 _00 seiko instruments inc. 1 the s-1323 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 lo w dropout voltage and large output current, and a built-in overcurrent protector prevents the load current from exceeding the current capacitance of the output transistor. an on/off circuit ensures a long battery life. compar ed with the voltage regulator s using the conventional cmos process, a larger variety of capacitors are available, including sma ll ceramic capacitors. small snt-4a and sc-82ab packages realiz e 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 current consumption: during operation: 70 a typ., 90 a max. during shutdown: 0.1 a typ., 1.0 a max. ? high peak current capability: 150 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 1.0 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. ? 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 battery-powered devices ? power supply for personal communication devices ? power supply for home electric/electronic appliances ? power supply for cellular phones ? packages ? snt-4a ? sc-82ab
high ripple-rejection and small package cmos voltage regulator s-1323 series rev.5.0 _00 2 seiko instruments inc. ? block diagram vin vss vout overcurrent protector reference voltage circuit on/off *1. parasitic diode *1 on/off circuit figure 1
high ripple-rejection and small package cmos voltage regulator rev.5.0 _00 s-1323 series seiko instruments inc. 3 ? product name structure the product types, output voltage and package types for the s-1323 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 s-1323 x xx xx ? 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) pf: snt-4a nb: sc-82ab 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 (on/off pin) under the operation. 2. package drawing code package name package tape reel land snt-4a pf004-a-p-sd pf004-a-c-sd pf004-a-r-sd pf004-a-l-sd sc-82ab np004-a-p-sd np004-a-c-sd np004-a-c-s1 np004-a-r-sd
high ripple-rejection and small package cmos voltage regulator s-1323 series rev.5.0 _00 4 seiko instruments inc. 3. product name list table 1 output voltage snt-4a sc-82ab 1.5v1.0% s-1323b15pf-n8a tfx s-1323b15nb-n8atfx 1.6v1.0% s-1323b16pf-n8b tfx s-1323b16nb-n8btfx 1.7v1.0% s-1323b17pf-n8ctfx s-1323b17nb-n8ctfx 1.8v1.0% s-1323b18pf-n8dtfx s-1323b18nb-n8dtfx 1.85v1.0% s-1323b1jpf-n9ptfx ? 1.9v1.0% s-1323b19pf-n8e tfx s-1323b19nb-n8etfx 2.0v1.0% s-1323b20pf-n8ftfx s-1323b20nb-n8ftfx 2.1v1.0% s-1323b21pf-n8gtfx s-1323b21nb-n8gtfx 2.2v1.0% s-1323b22pf-n8htfx s-1323b22nb-n8htfx 2.3v1.0% s-1323b23pf-n8i tfx s-1323b23nb-n8itfx 2.4v1.0% s-1323b24pf-n8jtfx s-1323b24nb-n8jtfx 2.5v1.0% s-1323b25pf-n8k tfx s-1323b25nb-n8ktfx 2.6v1.0% s-1323b26pf-n8ltfx s-1323b26nb-n8ltfx 2.7v1.0% s-1323b27pf-n8mtfx s-1323b27nb-n8mtfx 2.8v1.0% s-1323b28pf-n8ntfx s-1323b28nb-n8ntfx 2.85v1.0% s-1323b2jpf-n9qtfx ? 2.9v1.0% s-1323b29pf-n8otfx s-1323b29nb-n8otfx 3.0v1.0% s-1323b30pf-n8p tfx s-1323b30nb-n8ptfx 3.1v1.0% s-1323b31pf-n8qtfx s-1323b31nb-n8qtfx 3.2v1.0% s-1323b32pf-n8rtfx s-1323b32nb-n8rtfx 3.3v1.0% s-1323b33pf-n8s tfx s-1323b33nb-n8stfx 3.4v1.0% s-1323b34pf-n8ttfx s-1323b34nb-n8ttfx 3.5v1.0% s-1323b35pf-n8utfx s-1323b35nb-n8utfx 3.6v1.0% s-1323b36pf-n8v tfx s-1323b36nb-n8vtfx 3.7v1.0% s-1323b37pf-n8wtfx s-1323b37nb-n8wtfx 3.8v1.0% s-1323b38pf-n8x tfx s-1323b38nb-n8xtfx 3.9v1.0% s-1323b39pf-n8y tfx s-1323b39nb-n8ytfx 4.0v1.0% s-1323b40pf-n8ztfx s-1323b40nb-n8ztfx 4.1v1.0% s-1323b41pf-n9a tfx s-1323b41nb-n9atfx 4.2v1.0% s-1323b42pf-n9b tfx s-1323b42nb-n9btfx 4.3v1.0% s-1323b43pf-n9ctfx s-1323b43nb-n9ctfx 4.4v1.0% s-1323b44pf-n9dtfx s-1323b44nb-n9dtfx 4.5v1.0% s-1323b45pf-n9e tfx s-1323b45nb-n9etfx 4.6v1.0% s-1323b46pf-n9ftfx s-1323b46nb-n9ftfx 4.7v1.0% s-1323b47pf-n9gtfx s-1323b47nb-n9gtfx 4.8v1.0% s-1323b48pf-n9htfx s-1323b48nb-n9htfx 4.9v1.0% s-1323b49pf-n9i tfx s-1323b49nb-n9itfx 5.0v1.0% s-1323b50pf-n9jtfx s-1323b50nb-n9jtfx 5.1v1.0% s-1323b51pf-n9k tfx s-1323b51nb-n9ktfx 5.2v1.0% s-1323b52pf-n9ltfx s-1323b52nb-n9ltfx 5.3v1.0% s-1323b53pf-n9mtfx s-1323b53nb-n9mtfx 5.4v1.0% s-1323b54pf-n9ntfx s-1323b54nb-n9ntfx 5.5v1.0% s-1323b55pf-n9otfx s-1323b55nb-n9otfx remark 1. please contact the sii marketing department for type a products. 2. x: g or u 3. please select products of environmental code = u for sn 100%, halogen-free products.
high ripple-rejection and small package cmos voltage regulator rev.5.0 _00 s-1323 series seiko instruments inc. 5 ? pin configurations table 2 pin no. symbol description 1 vout output voltage pin 2 vin input voltage pin 3 on/off shutdown pin 4 vss gnd pin snt-4a top view 1 4 2 3 figure 2 table 3 pin no. symbol description 1 vout output voltage pin 2 vss gnd pin 3 on/off shutdown pin 4 vin input voltage pin 4 3 1 2 sc-82ab top view figure 3
high ripple-rejection and small package cmos voltage regulator s-1323 series rev.5.0 _00 6 seiko instruments inc. ? absolute maximum ratings table 4 (ta = 25 c unless otherwise specified) item symbol absolute maximum rating unit v in v ss ? 0.3 v ss + 7 v input voltage v on/off v ss ? 0.3 v in + 0.3 v output voltage v out v ss ? 0.3 v in + 0.3 v snt-4a 300 *1 mw 200 (when not mounted on board) mw power dissipation sc-82ab p d 400 *1 mw operating ambient temperature t opr ? 40 + 85 c storage temperature t stg ? 40 + 125 c *1. when mounted on board [mounted board] (1) board size: 114.3 mm 76.2 mm t1.6 mm (2) board name: je dec standard51-7 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. (1) when mounted on board (2) when not mounted on board 0 50 100 150 400 200 0 power dissipation (p d ) (mw) ambient temperature (ta) ( c) 500 300 100 snt-4a sc-82ab 0 50 100 150 400 200 0 power dissipation (p d ) (mw) ambient temperature (ta) ( c) 500 300 100 sc-82ab figure 4 power dissipation of package
high ripple-rejection and small package cmos voltage regulator rev.5.0 _00 s-1323 series seiko instruments inc. 7 ? electrical characteristics table 5 (ta = 25 c unless otherwise specified) item symbol conditions min. typ. max. unit test circuit output voltage *1 v out(e) v in = v out(s) + 1.0 v, i out = 30 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 150 *5 ? ? ma 3 dropout voltage *3 v drop i out = 150 ma ? 0.50 0.65 v 1 line regulation outin out1 vv v ? v out(s) + 0.5 v v in 6.5 v, i out = 30 ma ? 0.02 0.1 % / v 1 load regulation v out2 v in = v out(s) + 1.0 v, 1.0 ma i out 150 ma ? 20 40 mv 1 output voltage temperature coefficient *4 out out vta v ? v in = v out(s) + 1.0 v, i out = 30 ma, ? 40 c ta 85 c ? 100 ? ppm/ c 1 current consumption during operation i ss1 v in = v out(s) + 1.0 v, on/off pin = on, no load ? 70 90 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 ripple rejection rr v in = v out(s) + 1.0 v, f = 1.0 khz, v rip = 0.5 vrms, i out = 30 ma ? 70 ? db 5 short-circuit current i short v in = v out(s) + 1.0 v, on/off pin = on, v out = 0 v ? 250 ? ma 3 *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 (= 30 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 = 150 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. [] [] [] 1000cppm/ vta v vvcmv/ 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 sati sfied. attention should be paid to the power dissipation of the package w hen the output current is large. this specification is guaranteed by design.
high ripple-rejection and small package cmos voltage regulator s-1323 series rev.5.0 _00 8 seiko instruments inc. ? 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 and small package cmos voltage regulator rev.5.0 _00 s-1323 series seiko instruments inc. 9 ? 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 1.0 f or more can be used in 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 ): 1.0 f or more output capacitor (c l ): 1.0 f or more esr of output capacitor: 10 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.
high ripple-rejection and small package cmos voltage regulator s-1323 series rev.5.0 _00 10 seiko instruments inc. ? 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-1323 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 10 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. out in v v v out1 regulation line ? ? ? ? ? ? ? ? ? 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 and small package cmos voltage regulator rev.5.0 _00 s-1323 series seiko instruments inc. 11 7. ? ? ? ? ? ? ? out out v ta v voltage output oft coefficien 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 100 ppm/ c. v out ( e ) *1 ex. s-1323b28 typ. ? 40 25 + 0.28 mv/ c v out [v] *1. v out(e) is the value of the output voltage measured at 25 c. 85 ta [ c] ? 0.28 mv/ c figure 11 a change in the temperature of the output voltage [m v/c] is calculated using the following equation. [] [] [] 1000cppm/ vta v vvcmv/ 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 and small package cmos voltage regulator s-1323 series rev.5.0 _00 12 seiko instruments inc. ? operation 1. basic operation figure 12 shows the block diagram of the s-1323 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-1323 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 and small package cmos voltage regulator rev.5.0 _00 s-1323 series seiko instruments inc. 13 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 ? selection of output capacitor (c l ) the s-1323 series requires an output capacitor betw een the vout and vss pins for phase compensation. a ceramic capacitor with a capacitance of 1.0 f or more can be used. even if using an os capacitor, tantalum capacitor, or aluminum electrolyt ic capacitor, a capacitance of 1.0 f or more and an esr of 10 or less are required. the value of the output overshoot or undershoot transi ent response varies depending on the value of the output capacitor. when selecting the output capacitor, perform sufficient evaluation, including evaluation of temperature characteristics, on the actual device.
high ripple-rejection and small package cmos voltage regulator s-1323 series rev.5.0 _00 14 seiko instruments inc. ? 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 ): 1.0 f or more output capacitor (c l ): 1.0 f or more equivalent series resistance (esr): 10 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 characterist ics 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 and small package cmos voltage regulator rev.5.0 _00 s-1323 series seiko instruments inc. 15 ? characteristics (typical data) (1) output voltage vs. output current (when load current increases) s-1323b15 (ta = 25c) s-1323b30 (ta = 25c) v out [v] 400 2.0 1.5 1.0 0.5 0 0 100 200 300 v in = 1.8 v 2.0 v 2.5 v 6.5 v v out [v] v in = 3.3 v 3.5 v 4.0 v 6.5 v 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 0 100 200 300 400 i out [ma] i out [ma] s-1323b50 (ta = 25c) v out [v] 0 100 200 300 400 v in = 5.3 v 5.5 v 6.0 v 6.5 v 6 5 4 3 2 1 0 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-1323b15 (ta = 25c) s-1323b30 (ta = 25c) v out [v] 1.60 1.55 1.50 1.45 1.40 i out = 1 ma 30 ma 50 ma 3.5 3.0 2.5 2.0 1.5 1.0 v out [v] 3.10 3.05 3.00 2.95 2.90 i out = 1 ma 30 ma 50 ma 5.0 4.5 4.0 3.5 3.0 2.5 v in [v] v in [v] s-1323b50 (ta = 25c) v out [v] 50 ma 5.10 5.05 5.00 4.95 4.90 7.0 6.5 6.0 5.5 5.0 4.5 i out = 1 ma 30 ma v in [v]
high ripple-rejection and small package cmos voltage regulator s-1323 series rev.5.0 _00 16 seiko instruments inc. (3) dropout voltage vs. output current s-1323b15 s-1323b30 v drop [v] 0 50 100 150 200 ?40c 25c 85c 0.6 0.5 0.4 0.3 0.2 0.1 0 v drop [v] 0 50 100 150 200 ?40c 25c 85c 0.6 0.5 0.4 0.3 0.2 0.1 0 i out [ma] i out [ma] s-1323b50 v drop [v] 0 50 100 150 200 ?40c 25c 85c 0.6 0.5 0.4 0.3 0.2 0.1 0 i out [ma] (4) output voltage vs. ambient temperature s-1323b15 s-1323b30 v out [v] 20 ?20 60 ?40 0 40 80 1.60 1.55 1.50 1.45 1.40 100 v out [v] 20 ?20 60 ?40 0 40 80 3.10 3.05 3.00 2.95 2.90 100 ta [ c] ta [ c] s-1323b50 v out [v] ?40 ?20 0 20 40 60 10080 5.10 5.05 5.00 4.95 4.90 ta [ c]
high ripple-rejection and small package cmos voltage regulator rev.5.0 _00 s-1323 series seiko instruments inc. 17 (5) current consumption vs. input voltage s-1323b15 s-1323b30 i ss1 [ a] 6 4 2 0 ? 40c 25c 85c 120 100 80 60 40 20 0 8 i ss1 [ a] ? 40c 25c 85c 4 8 6 2 0 120 100 80 60 40 20 0 v in [v] v in [v] s-1323b50 i ss1 [ a] 8 120 100 80 60 40 20 0 0 2 4 6 ? 40c 85c 25c v in [v] (6) ripple rejection s-1323b15 (ta = 25c) s-1323b30 (ta = 25c) v in = 2.5 v, c out = 1.0 f v in = 4.0 v, c out = 1.0 f ripple rejection [db] 100 1k 10k 100k 10 i out = 1 ma 30 m a 150 m a 1m 100 80 60 40 20 0 ripple rejection [db] 100 1k 10k 100k 10 150 m a i out = 1 ma 30 m a 1m 100 80 60 40 20 0 frequency [hz] frequency [hz] s-1323b50 (ta = 25c) v in = 6.0 v, c out = 1.0 f ripple rejection [db] 100 1k 10k 100k 10 150 m a i out = 1 ma 30 m a 1m 100 80 60 40 20 0 frequency [hz]
high ripple-rejection and small package cmos voltage regulator s-1323 series rev.5.0 _00 18 seiko instruments inc. ? reference data (1) input transient response characteristics i out = 30 ma, tr = tf = 5.0 s, c out = 0.47 f, c in = 0 f i out = 30 ma, tr = tf = 5.0 s, c out = 1.0 f, c in = 0 f v out [v] 3.04 3.03 3.02 3.01 3.00 2.99 2.98 6 5 4 3 2 1 0 v in v out -20 -10 0 10 20 30 40 50 60 70 80 v in [v] v out [v] 3.04 3.03 3.02 3.01 3.00 2.99 2.98 6 5 4 3 2 1 0 v in v out -20 -10 0 10 20 30 40 50 60 70 80 v in [v] t [ s] t [ s] i out = 30 ma, tr = tf = 5.0 s, c out = 2.2 f, c in = 0 f v out [v] 3.04 3.03 3.02 3.01 3.00 2.99 2.98 6 5 4 3 2 1 0 v in v out -20 -10 0 10 20 30 40 50 60 70 80 v in [v] t [ s] (2) load transient response characteristics v in = 4.0 v, c out = 0.47 f, c in = 1.0 f, i out = 50? 100 ma v in = 4.0 v, c out = 1.0 f, c in = 1.0 f, i out = 50? 100 ma v out [v] 0 2 4 6 8 10 12 14 -4 -2 16 i out v out 3.20 3.15 3.10 3.05 3.00 2.95 2.90 150 100 50 0 ?50 ?100 ?150 i out [ma] v out [v] 0 2 4 6 8 10 12 14 -4 -2 16 i out v out 3.20 3.15 3.10 3.05 3.00 2.95 2.90 150 100 50 0 ?50 ?100 ?150 i out [ma] t [ s] t [ s] v in = 4.0 v, c out = 2.2 f, c in = 1.0 f, i out = 50? 100 ma v out [v] 0 2 4 6 8 10 12 14 -4 -2 16 i out v out 3.20 3.15 3.10 3.05 3.00 2.95 2.90 150 100 50 0 ?50 ?100 ?150 i out [ma] t [ s]
high ripple-rejection and small package cmos voltage regulator rev.5.0 _00 s-1323 series seiko instruments inc. 19 (3) shutdown pin transient response characteristics s-1323b15 (ta = 25c) s-1323b30 (ta = 25c) v in = 2.5 v, tr = tf = 1.0 s, c out = 1.0 f, c in = 1.0 f v in = 4.0 v, tr = tf = 1.0 s, c out = 1.0 f, c in = 1.0 f v out [v] v on/off v out 0 5 10 15 20 25 30 35 -10 -5 40 3 2 1 0 ?1 ?2 ?3 2.5 2.0 1.5 1.0 0.5 0 ?0.5 v on/off [v] v out [v] v on/off v out 0 5 10 15 20 25 30 35 -10 -5 40 6 4 2 0 ?2 ?4 ?6 5 4 3 2 1 0 ?1 v on/off [v] t [ s] t [ s] s-1323b50 (ta = 25c) v in = 6.0 v, tr = tf = 1.0 s, c out = 1.0 f, c in = 1.0 f v out [v] 7 6 5 4 3 2 1 0 ?1 8 6 4 2 0 ?2 ?4 ?6 ?8 v on/off v out 0 5 10 15 20 25 30 35 -10 -5 40 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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