Datasheet > MC34129P

MC34129P

更新时间： 2024-11-18 11:09:07

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		开关光电二极管控制器
页数	文件大小	规格书
16页	442K
描述
High Performance Current Mode Controllers

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数据手册

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MC34129P 数据手册

Freescale Semiconductor, Inc._{Order this document by MC34129/D}

HIGH PERFORMANCE

The MC34129/MC33129 are high performance current mode switching

regulators specifically designed for use in low power digital telephone

applications. These integrated circuits feature a unique internal fault timer

that provides automatic restart for overload recovery. For enhanced system

efficiency, a start/run comparator is included to implement bootstrapped

CURRENT MODE

CONTROLLERS

SEMICONDUCTOR

TECHNICAL DATA

operation of V . Other functions contained are a temperature compensated

reference, reference amplifier, fully accessible error amplifier, sawtooth

oscillator with sync input, pulse width modulator comparator, and a high

current totem pole driver ideally suited for driving a power MOSFET.

Also included are protective features consisting of soft–start,

undervoltage lockout, cycle–by–cycle current limiting, adjustable deadtime,

and a latch for single pulse metering.

P SUFFIX

PLASTIC PACKAGE

CASE 646

Although these devices are primarily intended for use in digital telephone

systems, they can be used cost effectively in many other applications.

• Current Mode Operation to 300 kHz

• Automatic Feed Forward Compensation

• Latching PWM for Cycle–by–Cycle Current Limiting

• Continuous Retry after Fault Timeout

• Soft–Start with Maximum Peak Switch Current Clamp

• Internally Trimmed 2% Bandgap Reference

• High Current Totem Pole Driver

D SUFFIX

PLASTIC PACKAGE

CASE 751A

(SO–14)

• Input Undervoltage Lockout

• Low Startup and Operating Current

• Direct Interface with Motorola SENSEFET Products

PIN CONNECTIONS

Drive Output

Drive Ground

Ramp Input

14 V

13 Start/Run Output

Soft–Start

Feedback/

PWM Input

Error Amp

Inverting Input

Error Amp

Noninverting Input

Sync/Inhibit

Input

Simplified Block Diagram

R /C

Start/Run

Output

Start/Run

2.5 V

Gnd

ref

1.25 V

ref

Soft–Start

and

Fault Timer

Undervoltage

Lockout

Soft–Start

(Top View)

1.25V

Reference

1.25V

ref

Gnd

Error Amp

Noninverting

Input

Inverting

Input

Feedback/

PWM Input

Drive Out

Drive Gnd

Ramp Input

ORDERING INFORMATION

Operating

–

2.5V

ref

Temperature Range

Device

Package

Latching

PWM

MC34129D

MC34129P

MC33129D

MC33129P

SO–14

= 0° to +70°C

Plastic DIP

Oscillator

R /C

SO–14

= –40° to +85°C

Sync/Inhibit

Input

Plastic DIP

Motorola, Inc. 1996

Rev 1

MOTOROLA ANALOG IC DEVICE DATA

For More Information On This Product,

Go to: www.freescale.com

12 3 4 5 6 7...16

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与MC34129P相关器件

型号	品牌	获取价格	描述	数据表
MC3412L	MOTOROLA	获取价格	D/A Converter, 12-Bit, 1 Func, Bipolar, CDIP24
MC3414	FREESCALE	获取价格	N-Channel 20-V (D-S) MOSFET Fast switching speed
MC34142FN	MOTOROLA	获取价格	0.5A DECODER BASED PRPHL DRVR, PQCC28, PLASTIC, LCC-28
MC34151	ONSEMI	获取价格	High Speed Dual MOSFET Drivers
MC34151_04	ONSEMI	获取价格	High Speed Dual MOSFET Drivers
MC34151_13	ONSEMI	获取价格	High Speed Dual MOSFET Drivers
MC34151D	ONSEMI	获取价格	High Speed Dual MOSFET Drivers
MC34151D	MOTOROLA	获取价格	HIGH SPEED DUAL MOSFET DRIVERS
MC34151DG	ONSEMI	获取价格	High Speed Dual MOSFET Drivers
MC34151DR2	ONSEMI	获取价格	High Speed Dual MOSFET Drivers

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