U6084B

更新时间： 2024-02-05 18:03:42

品牌	Logo	应用领域
爱特美尔 - ATMEL		功率控制
页数	文件大小	规格书
10页	185K
描述
PWM Power Control with Automatic Duty-cycle Reduction

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中文翻译

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数据手册

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U6084B 数据手册

Features

• Pulse-width Modulation up to 2 kHz Clock Frequency

• Protection against Short-circuit, Load-dump Overvoltage and Reverse V_S

• Duty-cycle 0 to 100% Continuously

• Output Stage for Power MOSFET

• Interference and Damage Protection According to VDE 0839 and ISO/TR 7637/1

• Charge-pump Noise Suppressed

• Ground-wire Breakage Protection

PWM Power

Control with

Automatic

Duty-cycle

Reduction

Description

The U6084B is a PWM-IC with bipolar technology designed for the control of an

N-channel power MOSFET used as a high-side switch. The IC is ideal for use in the

brightness control (dimming) of lamps such as in dashboard applications. For constant

brightness, the preselected duty-cycle can be reduced automatically as a function of

the supply voltage.

Figure 1. Block Diagram with External Circuit

U6084B

V_Batt

C₅

V_S

R_sh

Short circuit

latch monitoring

Current monitoring

+ short circuit detection

Charge

RC oscillator

pump

C₃

47 nF

PWM

Logic

C₁

47 kΩ

Control input

Output

Duty cycle

range

0-100%

C₂

Duty cycle

reduction

Voltage

monitoring

Enable/

disable

R₃

150 Ω

Ground

Rev. 4677B–AUTO–02/04

12 3 4 5 6 7...10

中文翻译

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