advanced power electronics corp. features description input voltage range : 2.6v~5.5v dropout voltage is 380mv at 1a output current guaranteed 1.2a output current low quiescent current is 50a (typ.) fixed output voltage is form 1.2 v to 5v by 0.1v steps. fast transient response current limit and thermal shutdown protection short circuit current fold-back available in the 3-pin pb-free sot-223, to-263 and to-252 packages ordering/package information data and specifications subject to change without notice 200905151 ape8970/a 1.2a high output current ldo regulator typical application 1 the ape8970/a is a low noise, high output current, low quiescent current and low dropout linear regulator. the device includes pass element, error amplifier, band-gap, current-limit and thermal shutdown circuitry. the output current is up to 1.2a. the characteristics of low dropout voltage and less quiescent current make it good for some critical current application, for example, some battery powered devices. the typical quiescent current is approximately 50a. due to internal flexible design, result in extensively fixed output voltage versions form 1.2v to 5v per 0.1v steps. built-in current-limit, short current protection and thermal-shutdown functions prevent any fault condition from ic damage. vin vout gnd in c v in out c ape8970/a 2.2uf 2.2uf out v 3 2 1 vin vout gnd tab is gnd top view 3 2 1 vin vout gnd tab is vout top view to-263 ape8970a ape8970 to-263 3 2 1 vin vout gnd tab is vout ( top view ) ape8970a 3 2 1 vin vout gnd tab is gnd ( top view ) ape8970 to-252 to-252 vin gnd vout tab is gnd (top view) 3 2 1 tab is vout ( top view ) 3 2 1 vin gnd vout sot-223 ape8970a ape8970 sot-223 ape8970xx-xx k : sot-223 h : to-252 s : to-263 output voltage package 12 : 1.2v 13 : 1.3v 50 : 5.0v refer pin assignment pin define
advanced power electronics corp. ape8970/a absolute maximum ratings (at t a =25c) vin pin voltage(v in ) -------------------------------------- - gnd - 0.3v to gnd + 6v output voltage(v out ) ------------------------------------- - gnd - 0.3v to vin + 0.3v power dissipation(p d ) sot-223 1.3w to-252 2.2w to-263 4w storage temperature range(t st ) --------------------- -40c to +150c junction temperature range(t j ) --------------------- - -40c to 125c operating temperature range (t op ) ----------------- - -40c to +85c thermal resistance from junction to case(rth jc ) sot-223 15c/w to-252 10c/w to-263 3.5c/w sot-223 75c/w to-252 45c/w to-263 25c/w note: rth ja is measured with the pcb copper area of approximately 1 in2(multi-layer). that need connect to tap pin. electrical specifications (t a =25c unless otherwise specified) parameter sym test condition min typ max units input voltage v in (note1) 2.6 - 5.5 v v in =v out +0.1v to 6v v out R R a v out =1.2v - 1.3 1.5 v out =1.5v - 1.1 1.4 v out =1.8v - 0.8 1.1 v out =2.5v - 0.57 0.7 v out =3.3v - 0.38 0.6 current limit (note 2) i limit 1.3 1.5 - a short circuit current i short output voltage < 0.375 x vout - 600 - ma 2.0v > v out -1020mv 2.0v < v out - 0.5 1 % f=120hz - 65 - f=1khz - 55 - temperature shutdown ts - 140 - c temperature shutdown hysterisis tsh - 30 - c note 1. minimum vin voltage is defined by output adds a dropout voltage. note 2. current limit is measured at constant junction temperature by using pulsed testing with a low on time. note 3. regulation is measured at constant junction temperature by using pulsed testing with a low on time. dropout voltage v drop v load regulation (note 3) ? (note1) % ? f,c o =2.2uf, i out =10ma i out =1.0a i out =10m~1.2a
advanced power electronics corp. ape8970/a pin descriptions pin symbol pin description vin input voltage gnd ground vout output voltage block diagram function pin description application information capacitor selection input-output (dropout) voltage v dropout = v in -v out = r ds (on) x i out 3 a minimum of 2.2f capacitor must be connected from vout to ground to insure stability. typically a large storage capacitor is connected from vin to ground to ensure that the input voltage does not sag below the minimum dropout voltage during the load transient response. this pin must always be dropout voltage higher than vout in order for the device to regulate properly. normally, use a 2.2f capacitor on the input and a 2.2f capacitor on the output of the ape8970/a. larger input capacitor values and lower esr (x5r, x7r) provide better supply-noise rejection and transient response. a higher- value output capacitor (4.7f) may be necessary if large, fast transients are anticipated and the device is located several inches from the power source. current limit - + vin vout gnd error amp bandgap thermal shutdown enable like any low-dropout regulator, the ape8970/a requires input and output decoupling capacitors. the device is specifically designed for portable applications requiring minimum board space and smallest components. these capacitors must be correctly selected for good performance (see capacitor characteristics section). please note that linear regulators with a low dropout voltage have high internal loop gains which require care in guarding against oscillation caused by insufficient decoupling capacitance. a regulator's minimum input-to-output voltage differential (dropout voltage) determines the lowest usable supply voltage. in battery-powered systems, this determines the useful end-of-life battery voltage. because the device uses a pmos, its dropout voltage is a function of drain-to source on-resistance, rds (on), multiplied by the load current:
advanced power electronics corp. ape8970/a current limit and short-circuit protection thermal considerations pcb layout 4 an input capacitance of ~ 2.2f is required between the ape8970/a input pin and ground (the amount of the capacitance may be increased without limit), this capacitor must be located a distance of not more than 1cm from the input and return to a clean analog ground. input capacitor can filter out the input voltage spike caused by the surge current due to the inductive effect of the package pin and the printed circuit board?s routing wire. otherwise, the actual voltage at the vin pin may exceed the absolute maximum rating. the output capacitor also must be located a distance of not more than 1cm from output to a clean analog ground. because it can filter out the output spike caused by the surge current due to the inductive effect of the package pin and the printed circuit board?s routing wire. the ape8970/a used a current sense-resistor to monitor the output current. a portion of the pmos output transistor?s current is mirrored to a resistor such that the voltage across this resistor is proportional to the output current. once the output current exceeds limit threshold, ape8970/a would be protected with a limited output current. further more, when the output is short to ground, the output current would be folded-back to a less limit. the ape8970/a series can deliver a current of up to 1.2a over the full operating j unction temperature range. however, the maximum output current must be dated at higher ambient temperature to ensure the junction temperature does not exceed 125c. with all possible conditions, the junction temperature must be within the range specified under operating conditions. power dissipation can be calculated based on the output current and the voltage drop across regulator. p d = (v in - v out ) i out the final operating junction temperature for any set of conditions can be estimated by the following thermal equation: p d (max) = (t j (max) - t a ) / rth ja where t j (max) is the maximum junction temperature of the die (125 c) and ta is the maximum ambient temperature. the junction to ambient thermal resistance (
advanced power electronics corp. ape8970/a typical performance characteristics 5 power on load transient ???? ???? ???? ??? ?? ???? ???? ???? ???? ??? ???? ? ? ? ? ? 3?3a? 3?? a?3?? a?e?? ? ?pe8970k-12 ??? ?? ???? ??? ??? ?? ???? ??? ???? ??? ???? ??? ???? ? ?? ?? ? ?? ? ?? a?3?3a? a?3??? a?3?? e?? ?pe8970k-12 ?? ?? ?? ? ?? ?? ?? ?? ? ?? ?? ? ?? ?? ? ?? ? ?? a?3?33??? a?3??? 3????? ape8970k-12 ape8970k-15 ape8970k-25 ?pe8970k-33 ?? ?? ?? ??? ?? ??? ??? ??? ??? ??? ?? ?? ? ? ? ? ??? ?? ?? ???3?3a? ?? ????:? a?3?? e?? a?e? ? ape8970k-12
package outline (1) sot-223 h e k d b1 e e1 b c l a1 seating plane 3.3 1.9 6.4 2.3 1.2 1.6 land pattern recommendation (unit: mm) a dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 1.50 1.65 1.80 0.059 0.065 0.071 a1 0.02 0.05 0.08 0.001 0.002 0.003 b 0.60 0.70 0.80 0.024 0.028 0.031 b1 2.90 - 3.15 0. 114 - 0.124 c 0.28 0.30 0.32 0.011 0.012 0.013 d 6.30 6.50 6.70 0.248 0.256 0.264 e 3.30 3.50 3.70 0.130 0.138 0.146 h 6.70 7.00 7.30 0.264 0.276 0.287 l 0.91 1.00 1.10 0.036 0.039 0.043 k 1.50 1.75 2.00 0.059 0.069 0.079 e 2.3 basic 0.091 basic e1 4.6 basic 0.181 basic advanced power electronics corp. ape8970/a 8970xk-xx part number y wwsss package code date code (ywwsss) y last digit of the year ww week sss sequence refer pin assignment output voltage marking information
(2) to-252 b2 e e b l2 e1 d l1 h a c1 c a1 seating plane l 5.6 11.0 5.6 2.0 2.25 land pattern recommendation (unit: mm) 7.2 1.2 d1 dimensions in millimeters dimensions in inches symbo l min. nom. max. min. nom. max. a 2.18 2.29 2.40 0.086 0.090 0.094 a1 0.89 - 1.14 0.035 - 0.045 b 0.61 typ. 0.024 typ. b2 5.20 5.35 5.50 0.205 0.211 0.217 c 0.45 0.52 0.58 0.018 0.020 0.023 c1 0.45 0.52 0.58 0.018 0.020 0.023 d 5.40 5.57 6.20 0.213 0.219 0.244 d1 4.57 4.77 4.97 0.180 0.188 0.196 e 6.35 6.58 6.80 0.250 0.259 0.268 e 2.28 bsc. 0.090 bsc. e1 4.57 bsc. 0.180 bsc. h 9.00 9.70 10.40 0.354 0.382 0.409 l 0.51 - - 0.020 - - l1 0.64 0.83 1.02 0.025 0.033 0.040 l2 0.88 - 1.27 0.035 - 0.050 advanced power electronics corp. ape8970/a marking information part number output voltage 8970xh-xx ywwsss date code (ywwsss) y
(3) to-263 e e l2 b b2 d l3 l a c2 c l1 1.3 3 15.7 10.9 9.1 land pattern recommendation (unit: mm) 2.54 d1 dimensions in millimeters dimensions in inches symbo l min. nom. max. min. nom. max. a 4.06 4.45 4.83 0.160 0.175 0.190 b 0.51 0.75 0.99 0.020 0.030 0.039 b2 1.14 1.27 1.40 0.045 0.050 0.055 c 0.38 typ. 0.015 typ. c2 1.14 1.27 1.40 0.045 0.050 0.055 d 8.65 9.15 9.65 0.341 0.360 0.380 d1 5.10 5.60 6.10 0.200 0.220 0.240 e 9.65 9.97 10.29 0.380 0.393 0.405 e 2.54 bsc. 0.100 bsc. l 14.61 15.24 15.88 0.575 0.600 0.625 l1 2.28 2.54 2.80 0.090 0.100 0.110 l2 - 1.30 2.92 - 0.051 0.115 l3 1.27 1.52 1.78 0.050 0.060 0.070 advanced power electronics corp. ape8970/a part number ywwsss logo date code (ywwsss) y
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