Step-Down Controllers with Prebias Startup,

Lossless Sensing, Synchronization, and OVP

6

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

CONDITIONS

MIN

MAX

UNITS

POK

Power-OK Threshold

typical hysteresis is 3%

88

94

%

POK Output Voltage, Low

200

mV

POK Leakage Current, High

1

µA

OVERVOLTAGE PROTECTION (OVP)

Output Overvoltage Fault-Trip level

Rising edge compared to regulation set point;

triggers after one or two clock cycles

+110

+120

%

MODE CONTROL

MODE Logic-Level Low

3V

0.4

V

MODE Logic-Level High

3V

1.8

V

-1

+1

MODE Input Current

MODE = VL

10

µA

SHUTDOWN CONTROL

EN Logic-Level Low

3V

0.45

V

EN Logic-Level High

3V

2

V

-1

+4

EN Input Current

6

µA

Note 1: Maximum output voltage is limited by maximum duty cycle and external components.

Note 2: Specifications to -40°C are guaranteed by design and not production tested.