© 2009 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FAN6862 • Rev. 1.0.1

3

Marking Information

ABxTT

•••

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Figure 3. Top Mark

Pin Configuration

Figure 4. Pin Configuration

Pin Definitions

Pin #

Name

Function

Description

1

GND

Ground

Ground.

2

FB

Feedback

The FB pin provides the output voltage regulation signal. It provides feedback

to the internal PWM comparator, so that the PWM comparator can control the

and delays for a long time, the controller stops and restarts.

3

RT

Temperature

Detection

An external NTC thermistor is connected from this pin to GND for over-

temperature protection. The impedance of the NTC decreases at high

temperatures. Once the voltage of the RT pin drops below a threshold,

PWM output is disabled.

4

SENSE Current Sense

This pin senses the voltage across a resistor. When the voltage reaches the

internal threshold, PWM output is disabled. This activates over-current

protection. This pin also provides current amplitude information for current-

mode control.

5

VDD

Power Supply Power supply.

6

GATE

Driver Output The totem-pole output driver for driving the power MOSFET.

ABx:

ABD: FAN6862TY

TT:

Wafer lot code

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Year code

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