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參數資料
| 型號： | SC4520 |
| 廠商： | Semtech Corporation |
| 英文描述： | 3A Step-Down Switching Regulator with Adjustable Switching Frequency |
| 中文描述： | 第3A降壓型開關穩壓器具有可調節開關頻率 |
| 文件頁數： | 1/12頁 |
| 文件大?。?/td> | 279K |
| 代理商： | SC4520 |
POWER MANAGEMENT
Description
The SC4520 is a current mode switching regulator with
an integrated switch and an adjustable frequency with
enable function. The integrated switch allows for cost-
effective, low power solutions with a peak switch current
of 3 amps. An adjustable high frequency of 100kHz to
600kHz provides for fast dynamic response and
instantaneous duty cycle adjustment as the input varies,
making the device ideal for CPE applications where the
input is a wall plug power. Low shutdown current also
makes the this device an excellent choice for portable
applications where conserving battery life is of prime
concern.
1
www.semtech.com
SC4520
3A Step-Down Switching Regulator with
Adjustable Switching Frequency
Features
Wide operating voltage range: 4.4V to 24V
Integrated 3 Amp switch
100kHz to 600kHz adjustable frequency operation
Current mode control
Precision enable threshold
SO-8 EDP package. Lead-free product, fully WEEE
and RoHS compliant
Typical Application Circuit
Applications
XDSL modems
CPE equipment
DC-DC point of load applications
Portable equipment
Digtial consumer electronics
Revision: December 13, 2006
C1
V
OUT
D2
R3
D1
L1
C2
BST
1
IN
2
SW
3
GND
4
EN
5
FB
6
COMP
7
FSET
8
Enable
C4
V
IN
C3
R2
R1
SC4520
Rosc
相關PDF資料 |
PDF描述 |
|---|---|
| SC4520EVB | 3A Step-Down Switching Regulator with Adjustable Switching Frequency |
| SC4520SETRT | 3A Step-Down Switching Regulator with Adjustable Switching Frequency |
| SC4521 | 3A Step-Down Switching Regulator with Programmable Soft Start |
| SC4521EVB | 3A Step-Down Switching Regulator with Programmable Soft Start |
| SC4521SETRT | 3A Step-Down Switching Regulator with Programmable Soft Start |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SC4520EVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:3A Step-Down Switching Regulator with Adjustable Switching Frequency |
| SC4520SETRT | 制造商:Semtech Corporation 功能描述: |
| SC4521 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:3A Step-Down Switching Regulator with Programmable Soft Start |
| SC4521EVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:3A Step-Down Switching Regulator with Programmable Soft Start |
| SC4521EVB-1 | 制造商:Semtech Corporation 功能描述:EVALUATION BOARD 制造商:Semtech Corporation 功能描述:3A Step-Down Switching Regulator With Programmable Soft Start |
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