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MC33363BP

HIGH VOLTAGE OFF–LINE SWITCHING REGULATOR

ON Semiconductor 

Order this document by MC33363B/D

MC33363B

High Voltage Switching

Regulator

The MC33363B is a monolithic high voltage switching regulator that is

specifically designed to operate from a rectified 240 Vac line source. This

integrated circuit features an on–chip 700 V/1.0 A SenseFET power switch,

450 V active off–line startup FET, duty cycle controlled oscillator, current

limiting comparator with a programmable threshold and leading edge

blanking, latching pulse width modulator for double pulse suppression, high

gain error amplifier, and a trimmed internal bandgap reference. Protective

features include cycle–by–cycle current limiting, input undervoltage lockout

with hysteresis, overvoltage protection, and thermal shutdown. This device

is available in a 16–lead dual–in–line and wide body surface mount

packages.

• On–Chip 700 V, 1.0 A SenseFET Power Switch

• Rectified 240 Vac Line Source Operation

• On–Chip 450 V Active Off–Line Startup FET

• Latching PWM for Double Pulse Suppression

• Cycle–By–Cycle Current Limiting

• Input Undervoltage Lockout with Hysteresis

• Over–Voltage Protection

• Trimmed Internal Bandgap Reference

• Internal Thermal Shutdown

Simplified Application

HIGH VOLTAGE

OFF–LINE

SWITCHING REGULATOR

SEMICONDUCTOR

TECHNICAL DATA

16

1

DW SUFFIX

PLASTIC PACKAGE

CASE 751N

(SOP–16L)

16

1

P SUFFIX

PLASTIC PACKAGE

CASE 648E

(DIP–16)

AC Input

Startup Input 1

Regulator

Output

8

6

RT

CT 7

Mirror

Osc

PWM

Thermal

Startup

Reg

PWM Latch

S

Driver

Q

R

VCC

UVLO

3

Overvoltage

Protection

Input

OVP 11

16

Power Switch

Drain

Ipk

LEB

Compensation

9

EA

10

Gnd 4, 5, 12, 13

Voltage

Feedback

Input

MOTOROLA ANALOG IC DEVICE DATA

DC Output

PIN CONNECTIONS

Startup Input 1

16

Power Switch

Drain

VCC 3

4

Gnd

5

RT 6

CT 7

Regulator Output 8

13

Gnd

12

11

Overvoltage

Protection Input

10

Voltage Feedback

Input

9 Compensation

(Top View)

ORDERING INFORMATION

Device

Operating

Temperature Range Package

MC33363BDW

SOP–16L

TJ = –25° to +125°C

MC33363BP

DIP–16

© Motorola, Inc. 1999

Rev 1

1

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