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NE5560

Switched-mode power supply control circuit

Philips Electronics 

Philips Semiconductors

Switched-mode power supply control circuit

Product specification

NE/SE5560

DESCRIPTION

The NE/SE5560 is a control circuit for use in switched-mode power

supplies. This single monolithic chip incorporates all the control and

housekeeping (protection) functions required in switched-mode

power supplies, including an internal temperature-compensated

reference source, internal Zener references, sawtooth generator,

pulse-width modulator, output stage and various protection circuits.

FEATURES

• Stabilized power supply

• Temperature-compensated reference source

• Sawtooth generator

• Pulse-width modulator

• Remote on/off switching

• Current limiting

• Low supply voltage protection

• Loop fault protection

• Demagnetization/overvoltage protection

• Maximum duty cycle clamp

• Feed-forward control

• External synchronization

ORDERING INFORMATION

DESCRIPTION

16-Pin Plastic Dual In-Line Package (DIP)

16-Pin Plastic Small Outline Large (SOL) Package

16-Pin Plastic Dual In-Line Package (DIP)

16-Pin Cerdip Dual In-Line Package (CERDIP)

ABSOLUTE MAXIMUM RATINGS

SYMBOL

Supply1

PARAMETER

VCC

Voltage-forced mode

ICC

Current-fed mode

Output transistor (at 20-30V max)

IOUT

Output current

Collector voltage (Pin 15)

Max. emitter voltage (Pin 14)

TA

Operating ambient temperature range

SE5560

NE5560

TSTG

Storage temperature range

NOTES:

1. Does not include current for timing resistors or capacitors.

PIN CONFIGURATION

D, F, N Packages

VCC 1

VZ 2

FEEDBACK 3

GAIN 4

MODULATOR 5

16 FEEDFORWARD

15 OUTPUT (COLL)

14 OUTPUT (EMIT)

13 DEMAG: OVERVOLTAGE

12 GND

DUTY CYCLE CONTROL 6

RT 7

CT 8

11 CURRENT LIMITING

10 REMOTE ON/OFF

9 EXTERNAL SYNC

SL00360

Figure 1. Pin Configuration

TEMPERATURE RANGE

0 to 70°C

0°C to 70°C

-55°C to 125°C

-55°C to 125°C

ORDER CODE

NE5560N

NE5560D

SE5560N

SE5560F

DWG #

SOT38-4

SOT162-1

SOT38-4

0582B

RATING

+18

30

40

VCC+1.4V

+5

-55 to +125

0 to 70

-65 to +150

UNIT

V

mA

mA

V

V

°C

°C

°C

1994 Aug 31

1

853-0125 13721

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