Datasheet > LTC3806

LTC3806

更新时间： 2023-12-20 18:44:12

品牌	Logo	应用领域
亚德诺 - ADI		控制器
页数	文件大小	规格书
20页	214K
描述
同步反激式 DC/DC 控制器

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中文翻译

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数据手册

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LTC3806 数据手册

LTC3806

Synchronous

Flyback DC/DC Controller

FEATURES

DESCRIPTIO

The LTC^®3806 is a current mode synchronous flyback

controller that drives N-channel power MOSFETs and

requires very few external components. It is intended for

medium power applications where multiple outputs are

required. Synchronous rectification provides higher effi-

ciency and improved output cross regulation than

nonsynchronous converters.

■

High Efficiency at Full Load

■

Better Cross Regulation Than Nonsynchronous

Converters (Multiple Outputs)

■

Soft-Start Minimizes Inrush Current

■

Current Mode Control Provides Excellent

Transient Response

■

High Maximum Duty Cycle: 89% Typical

■

±2% Programmable Undervoltage Lockout Threshold

The IC contains all the necessary control circuitry includ-

ing a 250kHz oscillator, precision undervoltage lockout

circuit with hysteresis, gate drivers for primary and syn-

chronous switches, current mode control circuitry and

soft-start circuitry.

■

±1% Internal Voltage Reference

■

Micropower Start-Up

■

Constant Frequency Operation (Never Audible)

■

3mm × 4mm 12-Pin DFN Package

Programmable soft-start reduces inrush currents. This

makes it easier to design compliant Power Over Ethernet

supplies.

APPLICATIO S

■

48V Telecom Supplies

12V/42V Automotive

■

Low start-up current reduces power dissipation in the

start-up resistor and reduces the size of the external start-

up capacitor.

■

24V Industrial

VoIP Phone

■

Power Over Ethernet

The LTC3806 is available in a 12-pin, exposed pad DFN

package.

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

TYPICAL APPLICATIO

3.3V

OUT1

36V TO 72V

2.5V

OUT2

4.7μF

•

51k

604k

LTC3806

RUN SENSE

•

100Ω

100μF

INTV

GND

1nF

26.7k

3.4k

4.7μF

0.47μF

470μF

0.056Ω

3806 F01

12.4k

21k

Figure 1. Multiple Output Flyback Converter for Telecom

3806fb

12 3 4 5 6 7...20

中文翻译

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与LTC3806相关器件

型号	品牌	获取价格	描述	数据表
LTC3806EDE	Linear	获取价格	Synchronous Flyback DC/DC Controller
LTC3806EDE#PBF	Linear	获取价格	LTC3806 - Synchronous Flyback DC/DC Controller; Package: DFN; Pins: 12; Temperature Range:
LTC3806EDE#TR	Linear	获取价格	LTC3806 - Synchronous Flyback DC/DC Controller; Package: DFN; Pins: 12; Temperature Range:
LTC3806EDE#TRPBF	Linear	获取价格	LTC3806 - Synchronous Flyback DC/DC Controller; Package: DFN; Pins: 12; Temperature Range:
LTC3807	Linear	获取价格	60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller
LTC3807	ADI	获取价格	具有 24V 输出电压能力的低 IQ、同步降压型控制器
LTC3807EFE#PBF	Linear	获取价格	LTC3807 - Low IQ, Synchronous Step-Down Controller with 24V Output Voltage Capability; Pac
LTC3807EUDC#PBF	Linear	获取价格	LTC3807 - Low IQ, Synchronous Step-Down Controller with 24V Output Voltage Capability; Pac
LTC3807HFE#PBF	Linear	获取价格	LTC3807 - Low IQ, Synchronous Step-Down Controller with 24V Output Voltage Capability; Pac
LTC3807HUDC#PBF	Linear	获取价格	LTC3807 - Low IQ, Synchronous Step-Down Controller with 24V Output Voltage Capability; Pac

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