HT2269

2/13

Current Mode PWM Controller

www.hotchip.com.cn

Ver1.0

TYPICAL APPLICATION

INV

VIN

RT

FB

VDD

SENSE

RI

GND GATE

EMI

Filter

AC IN

DC Out

PIN CONFIGURATION

Pin Name

Pin Num

Description

GND

1

Ground

FB

2

Feedback input pin. PWM duty cycle is determined by

voltage level into this pin and current-sense signal level

at Pin 6.

VIN

3

Connected through a large value resistor to rectified

line input for Startup IC supply and line voltage sensing.

RI

4

Internal Oscillator frequency setting pin. A resistor

connected between RI and GND sets the PWM

frequency.

RT

5

Temperature sensing input pin. Connected through a

NTC resistor to GND.

SENSE

6

Current sense input pin. Connected to MOSFET current

sensing resistor node.

VDD

7

DC power supply pin.

GATE

8

Totem-pole gate drive output for power MOSFET.

PACKAGE DISSIPATION RATING

Package

RθJA (°C/W)

DIP8

90

SOP8

150

1

2

3

4

5

6

7

8

GND

FB

VIN

RI

RT

SENSE

VDD

GATE