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參數資料
| 型號： | LT4430 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Secondary-Side Optocoupler Driver |
| 中文描述： | 二次側驅動光電耦合器 |
| 文件頁數： | 1/20頁 |
| 文件大?。?/td> | 2118K |
| 代理商： | LT4430 |
LT4430
1
4430f
FEATURES
DESCRIPTIO
U
APPLICATIU
TYPICAL APPLICATIO
U
Secondary-Side
Optocoupler Driver
The LT
4430 drives the optocoupler that crosses the
galvanic barrier in an isolated power supply. The IC con-
tains a precision-trimmed reference, a high bandwidth
error amplifier, an inverting gain of 6 stage to drive the
optocoupler and unique overshoot control circuitry.
The LT4430’s 600mV reference provides ±0.75% initial
accuracy and ±1.25% tolerance over temperature. A high
bandwidth 9MHz error amplifier permits simple frequency
compensation and negligible phase shift at typical loop
crossover frequencies. The optocoupler driver provides
10mA of output current and is short-circuit protected.
A unique overshoot control function prevents output
overshoot on startup and short-circuit recovery with a
single capacitor.
The LT4430 is available in the low profile 6-lead SOT-23
package.
■
48V Input Isolated DC/DC Converters
■
Isolated Telecommunication Power Systems
■
Distributed Power Step-Down Converters
■
Offline Isolated Power Supplies
■
Industrial Control Systems
■
Automotive and Heavy Equipment
■
600mV Reference (1.25% Over Temperature)
■
Wide Input Supply Range: 3V to 20V
■
Overshoot Control Function Prevents Output
Overshoot on Startup and Short-Circuit Recovery
■
High Bandwidth Error Amplifier Permits Simple Loop
Frequency Compensation
■
Ground-Referenced OptoCoupler Drive
■
10mA OptoCoupler Drive with Current Limiting
■
Low Profile (1mm) ThinSOT
TM
Package
Simplified Isolated Synchronous Forward Converter
ISOLATION
BARRIER
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
+
V
IN
4430 TA01
+
V
OUT
V
CC
V
CC
V
IN
OPTO
GND
COMP
OC
FB
LTC3900
SYNC
CG
FG
LT4430
LT1952
Isolated Flyback Telecom Converter
Startup with Overshoot Control
(See Schematic on Page 20)
V
IN
50V/DIV
V
5V/DIV
OVERSHOOT CONTROL
IMPLEMENTED
t = 5ms/DIV
4430 TA01b
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PDF描述 |
|---|---|
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LT4430_1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Secondary-Side Opto-Coupler Driver Ground-Referenced Opto-Coupler Drive |
| LT4430ES6 | 制造商:Linear Technology 功能描述: |
| LT4430ES6#PBF | 制造商:Linear Technology 功能描述:Secondary Side Optocoupler Driver 6-Pin TSOT-23 制造商:Linear Technology 功能描述:OPTO-COUPLER DRIVER 20V TSOT 制造商:Linear Technology 功能描述:OPTO-COUPLER DRIVER, 20V, TSOT-23-6; IC Function:Optocoupler Driver; Supply Voltage Min:3V; Supply Voltage Max:20V; Operating Temperature Min:-40C; Operating Temperature Max:125C; Digital IC Case Style:TSOT-23; No. of Pins:6 ;RoHS Compliant: Yes |
| LT4430ES6#TR | 制造商:Linear Technology 功能描述:Secondary Side Optocoupler Driver 6-Pin TSOT-23 T/R |
| LT4430ES6#TRM | 制造商:Linear Technology 功能描述:Secondary Side Optocoupler Driver 6-Pin TSOT-23 T/R |
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