SG3524BN MICROSEMI, SG3524BN Datasheet

SG3524BN

Manufacturer Part Number

SG3524BN

Description

Manufacturer

MICROSEMI

Datasheet

1.SG3524BN.pdf (5 pages)

Specifications of SG3524BN

Pwm Type

Voltage Mode PWM Controller

Number Of Pwm Outputs

On/off Pin

Yes

Adjustable Output

Duty Cycle

49%

Operating Supply Voltage (max)

40V

Output Voltage

19V

Synchronous Pin

Rise Time

200ns

Fall Time

100ns

Operating Temperature Classification

Commercial

Mounting

Through Hole

Pin Count

Package Type

PDIP

Lead Free Status / Rohs Status

Compliant

Current page: 1 of 5
Download datasheet (167Kb)

Rev 1.3a 3.21.2005

DESCRIPTION

The SG1524B is a pulse width modulator for switching power supplies

which features improved performance over industry standards like the

SG1524.

combines advanced processing techniques and circuit design to provide

improved reference accuracy, and extended common mode range at the

error amplifier and current limit inputs. A DC-coupled flip-flop eliminates

triggering and glitch problems, and a PWM data latch prevents edge

oscillations. The circuit incorporates true digital shutdown for high speed

response, while an undervoltage lockout circuit prevents spurious outputs

when the supply voltage is too low for stable operation. Full double-pulse

suppression logic insures alternating output pulses when the Shutdown

pin is used for pulse-by-pulse current limiting. The SG1524B is specified

for operation over the full military ambient temperature range of -55°C to

125°C. The SG2524B is characterized for the industrial range of -25°C to

85°C, and the SG3524B is designed for the commercial range of 0°C

to 70°C.

DESCRIPTION

NON-INVERTING

+C.L. SENSE

-C.L. SENSE

INVERTING

GROUND

A direct pin-for-pin replacement for the earlier device, it

Error

C.L.

Reference

Regulator

Oscillator

COMPENSATION

To Internal

Circuitry

P.W.M.

REF

REGULATING PULSE WIDTH MODULATOR

SHUTDOWN

OSC

Undervoltage

Lockout

LATCH

PWM

MEMORY

F/F

SG1524B/SG2524B/SG3524B

FEATURES

• • • • • 7V to 40V operation

• • • • • 5V reference trimmed to ± ± ± ± ± 1%

• • • • • 100Hz to 400KHz oscillator range

• • • • • Excellent external sync capability

• • • • • Dual 100mA output transistors

• • • • • Wide current limit common mode range

• • • • • DC-coupled toggle flip-flop

• • • • • PWM data latch

• • • • • Undervoltage lockout

• • • • • Full double-pulse suppression logic

• • • • • 60V output collectors

HIGH RELIABILITY FEATURES

♦ ♦ ♦ ♦ ♦ Available to MIL-STD-883 and DESC SMD

♦ ♦ ♦ ♦ ♦ Scheduled for MIL-M-38510 QPL listing

♦ ♦ ♦ ♦ ♦ Radiation data available

♦ ♦ ♦ ♦ ♦ LMI level "S" processing available

TOGGLE

- SG1524B

F/F

11861 Western Avenue ∞ ∞ ∞ ∞ ∞ Garden Grove, CA 92841

(714) 898-8121 ∞ ∞ ∞ ∞ ∞ FAX: (714) 893-2570

COLLECTOR A

EMITTER A

COLLECTOR B

EMITTER B

Microsemi Inc.

Related parts for SG3524BN

SG3524BN Summary of contents

Page 1

... Radiation data available ♦ ♦ ♦ ♦ ♦ LMI level "S" processing available COLLECTOR A EMITTER COLLECTOR B TOGGLE F/F EMITTER B 11861 Western Avenue ∞ ∞ ∞ ∞ ∞ Garden Grove, CA 92841 (714) 898-8121 ∞ ∞ ∞ ∞ ∞ FAX: (714) 893-2570 Microsemi Inc. ...

Page 2

ABSOLUTE MAXIMUM RATINGS Input Voltage (+V ) .......................................................... IN Collector Voltage ............................................................. Logic Inputs .......................................................... Current Limit Sense Inputs ..................................... Output Current (each transistor) ................................. Reference Load Current ............................................... Note 1. Values beyond which damage may occur. THERMAL DATA J ...

Page 3

ELECTRICAL CHARACTERISTICS Parameter Oscillator Section (Note 4) Initial Accuracy Voltage Stability Temperature Stability (Note 7) Minimum Frequency (Note 7) Maximum Frequency Sawtooth Peak Voltage Sawtooth Valley Voltage Clock Amplitude Clock Pulse Width Error Amplifier Section (Note 5) Input Offset Voltage ...

Page 4

TYPICAL CHARACTERISTIC CURVES 100 Rev 1.3a Copyright  2000 1000000 100000 1nF 3nF 10000 10nF 0.1uF 1000 1uF 100 1000 10000 100000 R (Ohm) T Figure 1 ...

Page 5

... Part No. 16-PIN CERAMIC DIP SG1524BJ/883B J - PACKAGE SG1524BJ/DESC -55°C to 125°C SG1524BJ SG2524BJ SG3524BJ 16-PIN PLASTIC DIP SG2524BN N - PACKAGE SG3524BN 16-PIN WIDE BODY SG2524BDW PLASTIC S.O.I.C. SG3524BDW DW - PACKAGE 20-PIN CERAMIC SG1524BL/883B LEADLESS CHIP CARRIER SG1524BL L- PACKAGE Note 1. Contact factory for JAN and DESC product availablity. ...

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