Datasheet

TPS62736
TPS62737
SLVSBO4B OCTOBER 2012REVISED JULY 2013
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Over recommended ambient temperature range, typical values are at T
A
= 25°C. Unless otherwise noted, specifications apply
for conditions of V
IN
= 4.2 V, V
OUT
= 1.8 V External components, C
IN
= 4.7 µF for TPS62736 and 22 µF for TPS62737 , L
BUCK
= 10 µH, C
OUT
= 22 µF
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
OUTPUT
V
BIAS
Output regulation reference 1.205 1.21 1.217 V
I
OUT
= 10 mA;
TPS62736 Output regulation (Spec does not include
–2% 0% 2%
the resistor accuracy error)
1.3 V < V
OUT
< 3.3 V
I
OUT
= 100 mA;
TPS62737 Output regulation (Spec does not include
–2% 0% 2%
the resistor accuracy error)
1.3 V < V
OUT
< 3.3 V;
I
OUT
= 100 µA;
TPS62736 Output line regulation 0.01
V
IN
= 2.4 V to 5.5 V
%/V
I
OUT
= 10 mA;
TPS62737 Output line regulation 0.31
V
IN
= 2.3 V to 5.5 V
I
OUT
= 100 µA to 50 mA,
V
OUT
TPS62736 Output load regulation 0.01 %/mA
V
IN
= 2.2 V
I
OUT
= 100 µA to 200 mA,
TPS62737 Output load regulation 0.01 %/mA
V
IN
= 2.2 V; -20 °C < T
A
< 85°C
V
IN
= 4.2V, I
OUT
= 1 mA,
TPS62736 Output ripple 20 mVpp
C
OUT
= 22 μF
V
IN
= 4.2V, I
OUT
= 1 mA,
TPS62737 Output ripple 40 mVpp
C
OUT
= 22 μF
Programmable voltage range for output voltage
I
OUT
= 10 mA 1.3 V
IN
- 0.2 V
threshold
V
IN
= 2.1 V, V
OUT(SET)
= 2.5 V,
TPS62736 Drop-out-voltage when V
IN
is less than
24 30 mV
V
OUT(SET)
I
OUT
= 10 mA, 100% duty cycle
V
DO
V
IN
= 2.1 V, V
OUT(SET)
= 2.5 V,
TPS62737 Drop-out-voltage when V
IN
is less than
180 220 mV
V
OUT(SET)
I
OUT
= 100 mA, 100% duty cycle
TPS62736, C
OUT
= 22 µF 400 μs
Startup time with EN1 low and EN2 transition to high
t
START-STBY
(Standby Mode)
TPS62737, C
OUT
= 22 µF 300 μs
t
START-SHIP
Startup time with EN2 high and EN1 transition from C
OUT
= 22 µF 100 ms
high to low (Ship Mode)
POWER SWITCH
TPS62736 High side switch ON resistance V
IN
= 3 V 2.4 3 Ω
TPS62736 Low side switch ON resistance V
IN
= 3 V 1.1 1.5 Ω
R
DS(on)
TPS62737 High side switch ON resistance V
IN
= 2.1 V 1.8 2.2 Ω
TPS62737 Low side switch ON resistance V
IN
= 2.1 V 0.9 1.3 Ω
2.4 V < V
IN
< 5.25 V;
TPS62736 Cycle-by-cycle current limit 68 86 100 mA
1.3 V < V
OUT
< 3.3 V
I
LIM
2.4 V < V
IN
< 5.25 V;
TPS62737 Cycle-by-cycle current limit 295 340 370 mA
1.3 V < V
OUT
< 3.3 V;
-20 °C < T
A
< 85°C
f
SW
Max switching frequency 2 MHz
INPUT
V
IN-UVLO
Input under voltage protection V
IN
falling 1.91 1.95 2 V
V
IN-OK
Input power good programmable voltage range 2 5.5 V
TPS62736 Accuracy of V
IN-OK
setting V
IN
increasing -2 2 %
V
IN-OK-ACC
TPS62737 Accuracy of V
IN-OK
setting -3 3
V
IN-OK-HYS
Fixed hysteresis on VIN_OK threshold, OK_HYST V
IN
increasing 40 mV
V
IN_OK-OH
V
IN-OK
output high threshold voltage Load = 10 µA V
IN
- 0.2 V
V
IN_OK-OL
V
IN-OK
output low threshold voltage 0.1 V
EN1 and EN2
V
IH
Voltage for EN High setting. Relative to V
IN
V
IN
- 0.2 V
V
IN
= 4.2V
V
IL
Voltage for EN Low setting. 0.2 V
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