Datasheet > B3843

B3843

更新时间： 2024-11-12 22:39:23

品牌	Logo	应用领域
其他 - ETC		控制器
页数	文件大小	规格书
10页	427K
描述
Current Mode PWM Controller

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B3843 数据手册

Bay Linear

Inspire the Linear Power

Current Mode PWM Controller

B3842/43/44/45A&A1

Description

Features

•

Low Start-Up and Operating Current

Maximum Duty Cycle

The Bay Linear B3842/43/44/45 are fixed frequency current-

mode PWM controller. These devices are designed for Off-

Line and DC-to-DC converter applications with minimum

external components. The B3842 family Feature a trimmed

oscillator for precise duty cycle control, a temperature

compensated reference, high gain error amplifier, current

sensing comparator, and a high current totempole output.

Ideally suited for driving a power N-Channel MOSFET’s. It is

low when is on off stage. Protection circuitry includes built in

under-voltage lockout and current limiting.

Operating Frequency Up to 500KHz

Under voltage Lockout with Hysteresis

Available in 8 pin SOIC

•

Similar to industry Standard UC3842

Major differences between members of these series are the

UVLO thresholds and maximum duty-cycle ranges. Typical

UVLO thresholds of 16V (on) and 10V (off) on the B3842 and

B3844 devices make them ideally suited to off-line

applications. These corresponding typical thresholds for the

B3842 and B3845 devcies are 8.4V (on) and 7.6V (off). The

B3842 and B3843 devcies can operate to duty cycles

approaching 100%. A duty-Cycle range of 0 to 50% is

obtained by the B3844 and B3845 by the addition of an

internal toggle flip-flop, which blanks the output off every

other clock cycle. It id available in 8 pin DIP and SOIC

packages.

Applications

•

Switching Power Supply

Monitor

Pin Connection

Ordering Information

Devices

B384X(Z)M

B384X(Z)P

Package

Temp.

SO-8

0 °C to 70 °C

8-DIP

Z=A ON Semi Z=A1 Fairchild & Samsung

8-Pin Surface Mount

COMP

REF

VCC

OUTPUT

GND

ISENSE

RT/CT

Top View

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

www.baylinear.com

12 3 4 5 6 7...10

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B3843A1P	ETC	获取价格	Current Mode PWM Controller
B3843AM	ETC	获取价格	Current Mode PWM Controller
B3844	ETC	获取价格	LOW-LOSS FILTER
B384402L1	COOPER	获取价格	Barrier Strip Terminal Block, 50A, 1 Row(s), 1 Deck(s)
B384402L2	COOPER	获取价格	Barrier Strip Terminal Block, 50A, 1 Row(s), 1 Deck(s)
B384402L3	COOPER	获取价格	50 A, BARRIER STRIP TERMINAL BLOCK, 1 ROW, 1 DECK
B384402L4	COOPER	获取价格	50 A, BARRIER STRIP TERMINAL BLOCK, 1 ROW, 1 DECK
B384402L6	COOPER	获取价格	50 A, BARRIER STRIP TERMINAL BLOCK, 1 ROW, 1 DECK
B384403	COOPER	获取价格	50 A, BARRIER STRIP TERMINAL BLOCK, 1 ROW, 1 DECK
B384403L1	COOPER	获取价格	50 A, BARRIER STRIP TERMINAL BLOCK, 1 ROW, 1 DECK