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SG3525AN Integrated Circuit Chip Step - Up / Step - Down DC - DC 1 Output Phase

Shenzhen Goldensun Electronics Technology Limited

SG3525AN Integrated Circuit Chip Step - Up / Step - Down DC - DC 1 Output Phase

Model Number : SG3525AN
Part Status : Active
Output Type : Transistor Driver
Function : Step-Down, Step-Up/Step-Down
Output Configuration : Positive
Topology : Buck, Push-Pull
Number of Outputs : 2
Output Phases : 1
Voltage - Supply (Vcc/Vdd) : 8 V ~ 35 V
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SG3525AN Integrated Circuit IC Chip Buck, Push-Pull Regulator Positive Output Step-Down, Step-Up/Step-Down DC-DC


Part Status

Active


Output Type

Transistor Driver


Function

Step-Down, Step-Up/Step-Down


Output Configuration

Positive


Topology

Buck, Push-Pull


Number of Outputs

2


Output Phases

1


Voltage - Supply (Vcc/Vdd)

8 V ~ 35 V


Frequency - Switching

100Hz ~ 400kHz


Duty Cycle (Max)

49%


Synchronous Rectifier

Yes


Clock Sync

Yes


Serial Interfaces

-


Control Features

Enable, Soft Start


Operating Temperature

0°C ~ 70°C (TA)


Package / Case

16-DIP (0.300", 7.62mm)


Supplier Device Package

16-DIP


Base Part Number

SG3525A


The SG3525A, SG3527A pulse width modulator control circuits offer 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 CT and Discharge

pins. These devices also feature 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 VCC is below 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 while the SG3527A utilized OR logic which gives a high output when off.

  • 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

  • Rating

    Symbol

    Value

    Unit

    Supply Voltage

    VCC

    +40

    Vdc

    Collector Supply Voltage

    VC

    +40

    Vdc

    Logic Inputs


    –0.3 to +5.5

    V

    Analog Inputs


    –0.3 to VCC

    V

    Output Current, Source or Sink

    IO

    ±500

    mA

    Reference Output Current

    Iref

    50

    mA

    Oscillator Charging Current


    5.0

    mA

    Power Dissipation (Plastic & Ceramic Package) TA = +25°C (Note 2)

    TC = +25°C (Note 3)

    PD


    1000

    2000

    mW

    Thermal Resistance Junction–to–Air

    RqJA

    100

    ° C/W

    Thermal Resistance Junction–to–Case

    RqJC

    60

    ° C/W

    Operating Junction Temperature

    TJ

    +150

    °C

    Storage Temperature Range

    Tstg

    –55 to +125

    °C

    Lead Temperature (Soldering, 10 seconds)

    TSolder

    +300

    °C

  • Characteristics

    Symbol

    Min

    Max

    Unit

    Supply Voltage

    VCC

    8.0

    35

    Vdc

    Collector Supply Voltage

    VC

    4.5

    35

    Vdc

    Output Sink/Source Current (Steady State)

    (Peak)

    IO


    0

    0


    ±100

    ±400

    mA

    Reference Load Current

    Iref

    0

    20

    mA

    Oscillator Frequency Range

    fosc

    0.1

    400

    kHz

    Oscillator Timing Resistor

    RT

    2.0

    150

    kW

    Oscillator Timing Capacitor

    CT

    0.001

    0.2

    mF

    Deadtime Resistor Range

    RD

    0

    500

    W

    Operating Ambient Temperature Range

    TA

    0

    +70

    °C

  • Item

    Package

    Manufacturer

    QTY

    TDA12001HN1F7F

    QFP

    NXP

    370

    TDA12010HN1F00

    QFP

    NXP

    36

    TDA12019HN1B7FOCA

    QFP

    PHILIPS

    84

    TDA1315HN2

    QFP

    PHI

    31642

    TDA15001HN1CC0

    QFP

    PHI

    840

    TDA8005AHC129S1

    QFP

    PHILIPS

    3000

    TDA8006AH

    QFP

    PHILIPS

    300

    TDA8752H6

    QFP

    PHILPS

    99

    TDA9567HN140635

    QFP

    PHILIPS

    929

    TDA9587HN130403

    QFP

    PHILIPS

    3300

    TDA9614HN1

    QFP

    PHILIPS

    660

    TDA9965HL

    QFP

    PHILIPS

    190

    TDA9973AHLC1

    QFP

    PHI

    41

    TDA9981A816

    QFP

    NXP

    11

    TDA9991H

    QFP

    PHL

    1

    TDOTG1120-0F0C-03

    QFP

    TDI

    19685

    TEA5759HLV1

    QFP

    PHI

    1870

    TEA6831HW

    QFP

    NXP

    20

    TEA6843HLV1

    QFP

    PHILIPS

    1390

    TEF6635HW05

    QFP

    NXP

    545

    TEF6701HL

    QFP

    NXP

    806

    TEF6892HN

    QFP

    PHL

    450

    TFP410MPAPREP

    QFP

    TI

    656

    TFP510PAP

    QFP

    TI

    688

    TGUI9440-1

    QFP

    TRIDENT

    5

    THC63LVD1023

    QFP

    THINE

    4787

    THC63LVD823

    QFP

    THINE

    6964

    THF9201

    QFP

    THINE

    175

    TL1051FR

    QFP

    TI

    240

    TLC320AC01CPM

    QFP

    TI

    136

    TLE7189QK

    QFP

    Infineon

    801

    TLK1201IRCP

    QFP

    TI

    89

    TLK1501IRCPR

    QFP

    TI

    2066


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