LT1424IN8-5 Datasheet

IC型號：
LT1424IN8-5
PDF描述：
Isolated Flyback Switching Regulator with 5V Output
文件大?。?/label>
145.28KB
PDF頁數(shù)：
16頁
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LT1424-5

Isolated Flyback

Switching Regulator

with 5V Output

FEATURES

DESCRIPTIO

No Transformer 鈥淭hird Winding鈥?or Optoisolator

Required

Designed for Use with 1:1 Ratio Transformers

Fixed, Application Specific 5V Output Voltage

Regulation Maintained Well into Discontinuous

Mode (Light Load)

Load Compensation Provides Excellent

Load Regulation

Available in 8-Pin PDIP and SO Packages

Operating Frequency: 285kHz

The LT

廬

1424-5 is a monolithic high power switching

regulator specifically designed for the isolated flyback

topology. No 鈥渢hird winding鈥?or optoisolator is required;

the integrated circuit senses the isolated output voltage

directly from the primary side flyback waveform. A high

current, high efficiency switch is included on the die along

with all oscillator, control and protection circuitry.

The LT1424-5 operates with input supply voltages from

3V to 20V and draws only 7mA quiescent current. It can

deliver up to 400mA at 5V with no external power devices.

By utilizing current mode switching techniques, it pro-

vides excellent AC and DC line regulation.

The LT1424-5 has a number of features not found on other

switching regulator ICs. Its unique control circuitry can

maintain regulation well into discontinuous mode. Load

compensation circuitry allows for improved load regula-

tion. An externally activated shutdown mode reduces total

supply current to 20碌A typical for standby operation.

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

APPLICATIO S

Isolated Communication Supplies

Industrial Automation

Instrumentation Systems

TYPICAL APPLICATIO

5V Output Isolated Power Supply

ISOLATION

BARRIER

47鈩?/div>

MBRS130LT3

330pF

5.25

100碌F

10V

400mA

0.1碌F

SHDN R

CCOMP

LT1424-5

SYNC

SGND

PGND

1N5248

47鈩?/div>

330pF

鈥?/div>

OUTPUT VOLTAGE (V)

MBR0540T4

鈥?/div>

100碌F

10V

1.8k

1000pF

INPUT

COM

1424-5 TA01

OUT

COM

4.75

100

200

300

OUTPUT CURRENT (mA)

400

1424-5 TA02

0.1碌F

C1, C2: AVX TPS D107M010R0080

T1: DALE LPE-4841-A307

Load Regulation

5.00

標準包裝
50
類別
集成電路 (IC)
家庭
PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器
系列
-
類型
回掃，隔離
輸出類型
固定
輸出數(shù)
1
輸出電壓
5V
輸入電壓
2.8 V ~ 20 V
PWM 型
電流模式
頻率 - 開關
285kHz
電流 - 輸出
200mA
同步整流器
無
工作溫度
-40°C ~ 125°C
安裝類型
通孔
封裝/外殼
8-DIP（0.300"，7.62mm）
包裝
管件
供應商設備封裝
8-PDIP

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LT1424IN8-5 Datasheet

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