SUPPLY |
VI |
Input voltage range |
|
3 |
|
17 |
V |
IQ |
Operating quiescent current |
EN = High, no load, device not switching TJ = –40 °C to 85 °C |
|
20 |
35 |
µA |
TJ = 125 °C |
|
|
58 |
ISD |
Shutdown current into AVIN and PVIN |
EN = Low TJ = –40 °C to +85 °C |
|
2 |
9 |
µA |
TJ = 125 °C |
|
|
18 |
V(UVLO) |
Undervoltage lockout threshold |
VI falling |
2.6 |
2.7 |
2.8 |
V |
VI rising |
2.8 |
2.9 |
3 |
TSD(th) |
Thermal shutdown threshold |
TJ rising |
|
160 |
|
°C |
TSD(hys) |
Thermal shutdown hysteresis |
TJ falling |
|
20 |
|
CONTROL (EN, SS, PG, VIDx, LPM) |
VIH |
High-level input threshold voltage (EN, VIDx, LPM) |
|
0.8 |
0.54 |
|
V |
VIL |
Low-level input threshold voltage (EN, VIDx, LPM) |
|
|
0.47 |
0.3 |
V |
R(PD) |
Pull down resistor at EN, VIDx, LPM |
EN, VIDx, LPM = low |
|
400 |
|
kΩ |
R(DIS) |
Output discharge resistor |
EN = Low, VO = 1 V |
|
20 |
|
kΩ |
Ilkg |
Input leakage current at EN, VIDx, LPM |
EN, VIDx, LPM = 3.3 V |
|
0.01 |
1 |
µA |
VTH(PG) |
Power good threshold DC voltage |
VO rising |
736 |
760 |
784 |
mV |
VO falling |
696 |
720 |
752 |
VOL(PG) |
Power good output low voltage |
I(PG) = –2 mA |
|
0.07 |
0.3 |
V |
Ilkg(PG) |
Input leakage current at PG |
V(PG) = 1.8 V |
|
1 |
400 |
nA |
td(PG) |
Power good delay time |
PG rising |
|
140 |
|
µs |
PG falling |
|
20 |
|
I(SS) |
SS pin source current |
|
2.3 |
2.5 |
2.7 |
µA |
POWER SWITCH |
rDS(on_H) |
High-side MOSFET on-resistance |
VI ≥ 6 V |
|
90 |
170 |
mΩ |
rDS(on_L) |
Low-side MOSFET on-resistance |
VI ≥ 6 V |
|
40 |
70 |
IL |
High-side MOSFET DC current-limit |
VI ≥ 5 V, TJ = 25 °C |
3.6 |
4.4 |
5.4 |
A |
IL(LOW) |
High-side MOSFET DC current-limit at low output voltage |
VO ≤ 0.3 V |
|
1.6 |
|
OUTPUT |
Ilkg(FBS) |
Input leakage current at FBS |
V(FBS)= 1.1 V |
|
1 |
100 |
nA |
VO(A) |
Output voltage accuracy |
PWM mode |
–1% |
|
1% |
|
PSM mode, LPM = High(1) |
–1% |
|
3% |
ΔVO(ΔIO) |
Load regulation(2) |
VI = 7.2 V, IO = 0.5 A to 3.2 A |
|
0.01 |
|
%/A |
ΔVO(ΔVI) |
Line regulation(2) |
3 V ≤ VI ≤ 17 V, IO = 1 A |
|
0.003 |
|
%/V |