Datasheet > B38C42

B38C42

更新时间： 2024-10-26 23:34:03

品牌	Logo	应用领域
其他 - ETC		控制器
页数	文件大小	规格书
5页	215K
描述
BiCMOS Current Mode PWM Controller

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B38C42 数据手册

Bay Linear

Inspire the Linear Power

BiCMOS Current Mode PWM Controller

B38C42/43/44/45

Advance Information

Description

Features

•

Low-Power BiCMOS Process

The Bay Linear B38C42/43/44/45 are fixed frequency and

high performance current-mode PWM controller in BiCMOS.

They are pin compatible with all bipolar 384X’s controllers are

similar to the MIC38C4X family. These devices are designed

for DC-to-DC converter applications and feature a trimmed

oscillator discharge current and bandgap reference.

Ultra Low Start-Up Current of 50µA (typ.)

Very Lower Operating Current (4mA)

Current Mode Operation ≥ 500KHz

CMOS outputs with Rail to Rail outputs

Under Voltage Lockout with Hysteresis

5V Trimmed Bandgap Reference

The benefit of the BiCMOS process provides significant

performance improvement compared to Bipolar 384X devices.

At 15V_INthe start-up current is reduced to 50µA (typ.) from

0.17 mA with an operating current reduced to 4mA (typ.) from

14mA. Also, quicker output rise and fall times drive larger

MOSFET ‘s and rail-to-rail output capability improves

efficiency, especially lower supply voltages.

Trimmed Oscillator Discharged Current

Low Cross-Conduction Currents

Available in 8 pin SOIC and 8PDip

Similar to MIC38C42/43/44/45

Pin to Pin compatible with UC3842X Family

Major differences between members of these series are the

UVLO thresholds. Typical UVLO thresholds of 14.5V (on)

and 9V (off) for the B38C42 and B38C44 devices make them

ideally suited to off-line applications. The corresponding

typical thresholds for the B38C43 and B3845 devcies are 8.4V

(on) and 7.6V (off).

Applications

•

Switched and Current Mode Power Supplies

Off-line Power Supply

Step-Up (Buck), Step-Down (Boost) Regulator

Flyback, Isolated Regulators

Synchronous FET converters

Forward Converters

The B39C4X devices are available in 8 pin DIP and SOIC.

Pin Connection

Ordering Information

Devices

Package

Temp.

B38C42M

SO-8

8-DIP

SO-8

8-DIP

SO-8

8-DIP

SO-8

8-DIP

-40°C to +85°C

B38C42P

B38C43M

B38C43P

B38C44M

B38C44P

B38C45M

B38C45P

8-SOIC and 8-PDip

COMP

REF

VDD

OUTPUT

GND

ISENSE

RT/CT

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Bay Linear, Inc 2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556

www.baylinear.com

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与B38C42相关器件

型号	品牌	获取价格	描述	数据表
B38C42M	ETC	获取价格	BiCMOS Current Mode PWM Controller
B38C42P	ETC	获取价格	BiCMOS Current Mode PWM Controller
B38C43	ETC	获取价格	BiCMOS Current Mode PWM Controller
B38C43M	ETC	获取价格	BiCMOS Current Mode PWM Controller
B38C43P	ETC	获取价格	BiCMOS Current Mode PWM Controller
B38C44	ETC	获取价格	BiCMOS Current Mode PWM Controller
B38C44M	ETC	获取价格	BiCMOS Current Mode PWM Controller
B38C44P	ETC	获取价格	BiCMOS Current Mode PWM Controller
B38C45	ETC	获取价格	BiCMOS Current Mode PWM Controller
B38C45M	ETC	获取价格	BiCMOS Current Mode PWM Controller