Parameter

Conditions

25°C

-40° to 85°C

Units

Min

Typ

Max

Min

Max

Logic Inputs/Outputs (continued)

EN Input Bias Current

-1

+1

μA

FB Input Bias Current

-1

+1

μA

Power Good Output

Low Voltage

R

0.4

V

Gate Drivers

Shoot-Through

DH or DL Rising

30

ns

DL Pull-Down Resistance

DL Low

0.8

1.6

Ω

DL Sink Current

V

3.1

A

DL Pull-Up Resistance

DL High

2

4

Ω

DL Source Current

V

1.3

A

DH Pull-Down Resistance

2

4

Ω

2

4

Ω

DH Sink/Source Current

V

1.3

A

Notes:

(1) Guaranteed by design.

(2) Semtech’s SmartDriver™ FET drive first pulls DH high with a pull-up resistance of 10Ω (typical) until LX = 1.5V (typical). At this point,

an additional pull-up device is activated, reducing the resistance to 2Ω (typical). This negates the need for an external gate or boost

resistor.

4

© 2006 Semtech Corp.

www.semtech.com

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POWER MANAGEMENT