| SUPPLY VOLTAGE |
| Operating input voltage |
VIN |
2.95 |
|
6 |
V |
| Shutdown current |
EN = 0V, 25°C |
|
2 |
5 |
µA |
| Operating current |
VSENSE = 0.9V, 25°C |
|
360 |
575 |
µA |
| Internal undervoltage lockout |
|
|
2.6 |
2.9 |
V |
| ENABLE |
| Enable threshold |
rising |
|
1.25 |
1.37 |
V |
| falling |
1.15 |
1.18 |
|
|
| Input current |
Threshold - 50mV |
|
–1.2 |
|
µA |
| Threshold + 50mV |
|
–4.6 |
|
µA |
| Hysteresis |
|
|
3.4 |
|
| VOLTAGE REFERENCE |
| Reference |
3V < VIN < 6V |
0.804 |
0.829 |
0.854 |
V |
| MOSFET |
| High side switch resistance |
BOOT- PH = 5 V |
|
45 |
81 |
mΩ |
| Low side switch resistance |
VIN = 5 V |
|
45 |
81 |
mΩ |
| ERROR AMPLIFIER |
|
| Input current |
|
|
50 |
|
nA |
| Error amp transconductance |
-2 µA < I(COMP) < 2 µA |
|
245 |
|
uS |
| Error amp dc gain |
VSENSE = 0.8 V |
|
500 |
|
V/V |
| Minimum unity gain Bandwidth |
|
|
3 |
|
MHz |
| Error amp source/sink |
V(COMP) = 1V, 100 mV overdrive |
|
±16 |
|
µA |
| COMP to Iph gm |
I(PH) = 0.5 A |
|
7.5 |
|
A/V |
| CURRENT LIMIT |
| High side sourcing current limit |
VIN = 3 V |
2 |
2.75 |
|
A |
| Low Side Sinking Current Limit |
VIN = 3 V |
–3 |
–4.5 |
|
A |
| THERMAL SHUTDOWN |
| Thermal Shutdown |
|
|
171 |
|
°C |
| OT Hysteresis |
|
|
12 |
|
°C |
| RT/CLK |
| RT/CLK voltage |
R(RT/CLK) = 195 kΩ |
|
0.5 |
|
V |
| RT/CLK high threshold |
|
|
1.6 |
2.2 |
V |
| RT/CLK low threshold |
|
0.4 |
0.6 |
|
V |
| BOOT |
| Boot UVLO |
|
|
2.5 |
|
V |
| SS Slow Start |
| Charge current |
V(SS) = 0.4 V |
0.5 |
2.2 |
4 |
µA |
| SS to VSENSE matching |
V(SS) = 0.4 V |
|
35 |
|
mV |
| SS to reference Crossover |
98% reference |
|
1.1 |
|
V |
| SS discharge current (overload) |
VSENSE = 0 V |
|
325 |
|
µA |
| SS discharge voltage |
VSENSE = 0V |
|
46 |
|
mV |
| SS discharge current (UVLO, EN, thermal fault) |
V(SS) = 0.5 V |
|
1.2 |
|
mA |
| VIN UVLO to SS start time |
|
|
100 |
|
µs |
| FAULT Pin |
| VSENSE threshold |
VSENSE falling |
|
91 |
|
% VREF |
| VSENSE rising |
|
108 |
|
% VREF |
| Output high leakage |
VSENSE = VREF, V(FAULT) = 5.5 V |
|
2 |
|
nA |
| Output low |
I(FAULT) = 3 mA |
|
0.3 |
|
V |
| Minimum VIN for valid output |
V(FAULT) < 0.5 V at 100 µA |
|
|
1.6 |
V |