SUPPLY VOLTAGE (VIN PIN) |
Operating input voltage |
|
4.7 |
|
60 |
V |
Shutdown supply current |
EN = 0 V |
|
1.4 |
|
µA |
IQ operating; non-switching |
VSENSE = 0.9 V, VIN = 12 V |
|
90 |
110 |
µA |
ENABLE AND UVLO (EN PIN) |
Enable threshold |
Rising |
|
1.23 |
1.4 |
V |
Falling |
1 |
1.18 |
|
V |
Input current |
Enable threshold 50 mV |
|
–4.7 |
|
µA |
Enable threshold –50 mV |
|
–1.2 |
|
µA |
Hysteresis |
|
|
–3.5 |
|
µA |
Enable high to start switching time |
|
|
450 |
|
µs |
VIN |
VIN start voltage |
VIN rising |
|
4.5 |
|
V |
VOLTAGE REFERENCE |
Voltage reference |
TJ = 25°C, VIN = 12 V |
0.792 |
0.8 |
0.808 |
V |
1 mA < IOUT < Minimum current limit |
0.784 |
0.8 |
0.816 |
HIGH-SIDE MOSFET |
Switch resistance |
BOOT-PH = 5.7 V |
|
1.5 |
3 |
Ω |
LOW-SIDE MOSFET |
Switch resistance |
VIN = 12 V |
|
0.8 |
1.5 |
Ω |
ERROR AMPLIFIER |
Input current |
VSENSE pin |
|
20 |
|
nA |
Error-amplifier gm |
–2 µA < I(COMP) < 2 µA, V(COMP) = 1 V |
|
108 |
|
µMhos |
EA gm during slow-start |
–2 µA < I(COMP) < 2 µA, V(COMP) = 1 V, VSENSE = 0.4 V |
|
27 |
|
µMhos |
Error amplifier DC gain |
VSENSE = 0.8 V |
|
1000 |
|
V/V |
Minimum unity-gain bandwidth |
|
|
0.5 |
|
MHz |
Error amplifier source and sink |
V(COMP) = 1 V, 100-mV overdrive |
|
±8 |
|
µA |
Start-switching threshold |
|
|
0.57 |
|
V |
COMP to Iswitch gm |
|
|
1 |
|
A/V |
CURRENT LIMIT |
High-side sourcing current-limit threshold |
BOOT-PH = 5.7 V |
250 |
350 |
500 |
mA |
Zero-cross detect current |
|
|
–1.1 |
|
mA |
THERMAL SHUTDOWN |
Thermal shutdown |
|
|
176 |
|
C |
RT/CLK |
Operating frequency using RT mode |
|
50 |
|
1100 |
kHz |
Switching frequency |
R(RT/CLK) = 120 kΩ |
425 |
472 |
520 |
kHz |
Minimum CLK pulse duration |
|
|
40 |
|
ns |
RT/CLK voltage |
R(RT/CLK) = 120 kΩ |
|
0.53 |
|
V |
RT/CLK high threshold |
|
|
|
1.8 |
V |
RT/CLK low threshold |
|
0.5 |
|
|
V |
RT/CLK falling-edge to PH rising-edge delay |
Measure at 500 kHz with RT resistor |
|
67 |
|
ns |
PLL lock-in time |
Measure at 500 kHz |
|
100 |
|
µs |
PLL frequency range |
|
300 |
|
1100 |
kHz |
PH |
Minimum ON-time |
Measured at 50% to 50%, IOUT = 200 mA |
|
120 |
|
ns |
Dead time |
VIN = 12 V, IOUT = 200 mA, one transition |
|
30 |
|
ns |
BOOT |
BOOT-to-PH regulation voltage |
VIN = 12 V |
|
6 |
|
V |
BOOT-PH UVLO |
|
|
2.9 |
|
V |
INTERNAL SLOW-START TIME |
Slow-start time |
fSW = 472 kHz, RT = 120 kΩ, 10% to 90% |
|
2.36 |
|
ms |