SG3525ADWG ON Semiconductor, SG3525ADWG Datasheet

SG3525ADWG

Manufacturer Part Number

SG3525ADWG

Description

IC PWM SMPS CONTROLLER 16-SOIC

Manufacturer

ON Semiconductor

Datasheet

1.SG3525ADWR2G.pdf (10 pages)

Specifications of SG3525ADWG

Pwm Type

Voltage Mode

Number Of Outputs

Frequency - Max

400kHz

Duty Cycle

49%

Voltage - Supply

8 V ~ 35 V

Buck

Boost

Flyback

Inverting

Doubler

Divider

Cuk

Isolated

Operating Temperature

0°C ~ 70°C

Package / Case

16-SOIC (0.300", 7.5mm Width)

Frequency-max

400kHz

Topology

Half-Bridge, Push-Pull

Output Current

400 mA

Switching Frequency

400 KHz

Duty Cycle (max)

49 %

Maximum Operating Temperature

+ 70 C

Minimum Operating Temperature

0 C

Fall Time

50 ns

Mounting Style

SMD/SMT

Rise Time

100 ns

Synchronous Pin

Yes

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

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Part Number

Manufacturer

Quantity

Price

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H&T Electronics

Part Number:

SG3525ADWG

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SG3525A

Pulse Width Modulator

Control Circuit

improved performance and lower external parts count when

implemented for controlling all types of switching power supplies.

The on−chip +5.1 V reference is trimmed to "1% and the error

amplifier has an input common−mode voltage range that includes the

reference voltage, thus eliminating the need for external divider

resistors. A sync input to the oscillator enables multiple units to be

slaved or a single unit to be synchronized to an external system clock.

A wide range of deadtime can be programmed by a single resistor

connected between the C

features built−in soft−start circuitry, requiring only an external timing

capacitor. A shutdown pin controls both the soft−start circuitry and the

output stages, providing instantaneous turn off through the PWM latch

with pulsed shutdown, as well as soft−start recycle with longer

shutdown commands. The under voltage lockout inhibits the outputs

and the changing of the soft−start capacitor when V

nominal. The output stages are totem−pole design capable of sinking

and sourcing in excess of 200 mA. The output stage of the SG3525A

features NOR logic resulting in a low output for an off−state.

Features

*For additional information on our Pb−Free strategy and soldering details, please

January, 2005 − Rev. 5

download the ON Semiconductor Soldering and Mounting Techniques

Reference Manual, SOLDERRM/D.

The SG3525A pulse width modulator control circuit offers

8.0 V to 35 V Operation

5.1 V " 1.0% Trimmed Reference

100 Hz to 400 kHz Oscillator Range

Separate Oscillator Sync Pin

Adjustable Deadtime Control

Input Undervoltage Lockout

Latching PWM to Prevent Multiple Pulses

Pulse−by−Pulse Shutdown

Dual Source/Sink Outputs: "400 mA Peak

Pb−Free Packages are Available*

Semiconductor Components Industries, LLC, 2005

and Discharge pins. This device also

is below

See detailed ordering and shipping information in the package

dimensions section on page 2 of this data sheet.

Noninv. Input

OSC. Output

Discharge

Soft−Start

Inv. Input

ORDERING INFORMATION

Sync

PIN CONNECTIONS

http://onsemi.com

WL = Wafer Lot

YY = Year

WW = Work Week

DW SUFFIX

CASE 751G

CASE 648

SOIC−16L

N SUFFIX

= Assembly Location

PDIP−16

(Top View)

Publication Order Number:

DIAGRAMS

Output B

Ground

Output A

Shutdown

Compensation

MARKING

AWLYYWW

SG3525AN

AWLYYWW

ref

SG3525A

SG3525A/D

Related parts for SG3525ADWG

SG3525ADWG Summary of contents

Page 1

... Pulse−by−Pulse Shutdown Dual Source/Sink Outputs: "400 mA Peak Pb−Free Packages are Available* *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. Semiconductor Components Industries, LLC, 2005 January, 2005 − Rev. 5 http://onsemi ...

Page 2

... C Soft−Start 10 Shutdown ORDERING INFORMATION Device SG3525AN SG3525ANG SG3525ADW SG3525ADWG SG3525ADWR2 SG3525ADWR2G †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. SG3525A To Internal Circuitry Reference Under− ...

Page 3

MAXIMUM RATINGS Rating Supply Voltage Collector Supply Voltage Logic Inputs Analog Inputs Output Current, Source or Sink Reference Output Current Oscillator Charging Current Power Dissipation T = +25 C (Note +25 C (Note 2) C Thermal ...

Page 4

ELECTRICAL CHARACTERISTICS Characteristics REFERENCE SECTION Reference Output Voltage ( Line Regulation (+8 + Load Regulation ( mA) L Temperature Stability Total Output Variation Includes Line and Load Regulation over ...

Page 5

ELECTRICAL CHARACTERISTICS Characteristics SOFT−START SECTION Soft−Start Current ( shutdown Soft−Start Voltage (V = 2.0 V) shutdown Shutdown Input Current (V = 2.5 V) shutdown OUTPUT DRIVERS (Each Output + Output Low Level (I ...

Page 6

CHARGE TIME (ms) Figure 3. Oscillator Charge Time versus R 100 ...

Page 7

Q1 5.0k Clock Output Filter + supply SG3525A 14 B GND 12 For single−ended supplies, the driver outputs are grounded. The V terminal is switched to ground by the totem−pole ...

Page 8

−T− 0.25 (0.010 SG3525A PACKAGE DIMENSIONS PDIP−16 N SUFFIX CASE 648−08 ISSUE T NOTES: 1. DIMENSIONING AND TOLERANCING PER 2. CONTROLLING DIMENSION: INCH. ...

Page 9

PACKAGE DIMENSIONS 16X 0. SEATING e PLANE 14X T SG3525A SOIC−16L DW SUFFIX CASE 751G−03 ISSUE C NOTES: 1. DIMENSIONS ARE IN MILLIMETERS INTERPRET ...

Page 10

... Fax: 480−829−7709 or 800−344−3867 Toll Free USA/Canada Email: orderlit@onsemi.com SG3525A N. American Technical Support: 800−282−9855 Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 http://onsemi.com 10 ON Semiconductor Website: http://onsemi ...

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