SN105125 Datasheet, PDF (4/13 Pages) Texas Instruments – 150-mA LOW DROPOUT REGULATOR WITH POK

SN105125
150-mA LOW DROPOUT REGULATOR WITH POK
SLVS418 – JANUARY 2002
electrical characteristics, T_A= 25°C, V_I =5 V, V_(EN) = V_I, I_O = 100 µA, C_L = 1 µF(unless otherwise noted)
regulator V_O
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNITS
Output voltage
IO = 25 mA
1.2
V
VO
Output voltage accuracy
IO = 0
–1%
1%
IO = 50 mA, TA = 0°C to 70°C (see Note 4)
–2%
2%
IQ
Quiescent supply current
V(EN) ≤ 0.8 V
1
µA
I(GND)
Ground terminal current (see Note 5)
IO = 0
IO = 150 mA
150
150
µA
IL
Output load current
150
mA
I(Limit)
Output current limit
VO = 0
160 300
mA
∆V(LNR) Line regulation
VI = 3 V to 5.25 V
10
mV
∆V(LDR) Load regulation
IO = 0.1 mA to150 mA, See Note 6
2% 3%
VI – VO Dropout voltage
IO = 100 µA
IO = 150 mA
1
V
1
CL
Load capacitance
ESR and capacitance tradeoffs
1
µF
I(REV)
Reverse output current on VI
VI = GND, VO = regulated voltage
50 µA
NOTES: 4. Assured by design, not tested in production.
5. Ground terminal current is the regulator quiescent current drawn from the supply to support the load current.
6. Regulation is measured at constant junction temperature using low duty cycle pulse testing. Devices are tested for load regulation
in the load range from 0.1 mA to 150 mA.
enable input
PARAMETER
VIL Regulated shutdown
VIH Regulated enabled
I(EN) Enable input current
Resistance discharge
TEST CONDITIONS
VI = 3 V to 5.25 V regulated shutdown
VI = 3 V to 5.25 V regulated enabled
Shutdown, VIL ≤ 0.8 V
Enabled, VIH ≥ 2 V
V(EN) ≤ 0.8 V
MIN
2
TYP MAX
0.8
0.01
0.01
500
UNITS
V
V
µA
Ω
thermal protection (see Note 4)
PARAMETER
T(SD)
Thermal shutdown
T(SDHYS) Hysteresis
NOTE 4: Assured by design, not tested in production.
TEST CONDITIONS
MIN TYP MAX UNITS
165
°C
15
°C
power okay (see Note 7)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNITS
V(POKLO) Low threshold
Output falls % of VO (power NOT okay)
85%
V(POKTH) High threshold
Output reaches % of VO, starts delay timer (power okay)
90%
VOL
VO out of regulation
Fault condition, IOL = 100 µA
0.4 V
Ilkg
Leakage current
VI = 5 V
1 µA
NOTE 7: Power okay is a function of the output voltage being 5% lower than the specified range. The function is a detection of one of the following:
over current, over temperature, or dropout.
4
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