Datasheet > MC34129EF

MC34129EF

更新时间： 2024-11-21 12:27:47

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		控制器
页数	文件大小	规格书
16页	444K
描述
high performance current mode controllers

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数据手册

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MC34129EF 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MC34129EF相关器件

型号	品牌	获取价格	描述	数据表
MC34129P	FREESCALE	获取价格	High Performance Current Mode Controllers
MC34129P	MOTOROLA	获取价格	HIGH PERFORMANCE CURRENT MODE CONTROLLERS
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

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