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參數資料
| 型號： | SC2602L |
| 廠商： | Semtech Corporation |
| 英文描述： | Synchronous Voltage Mode Controller for Distributed Power Supply |
| 中文描述： | 同步電壓模式控制器，用于分布式電源 |
| 文件頁數： | 1/14頁 |
| 文件大小： | 473K |
| 代理商： | SC2602L |
1
www.semtech.com
SC2602L
Synchronous Voltage Mode Controller
for Distributed Power Supply
POWER MANAGEMENT
Description
Applications
Revision: January 05, 2006
Typical Application Circuit
R
DS(ON)
current sensing
Output voltage can be programmed as low as 0.8V
On-chip power good and OVP functions
Small size with minimum external components
Soft Start
Enable function
SO-14 package is fully WEEE and RoHS compliant
Microprocessor core supply
Low cost synchronous applications
Voltage Regulator Modules (VRM)
DDR termination supplies
Networking power supplies
Sequenced power supplies
The SC2602L is low-cost, full featured, synchronous volt-
age-mode controller designed for use in single ended
power supply applications where efficiency is of primary
concern. Synchronous operation allows for the elimina-
tion of heat sinks in many applications. The SC2602L is
ideal for implementing DC/DC converters needed to
power advanced microprocessors in low cost systems,
or in distributed power applications where efficiency is
important. Internal level-shift, high-side drive circuitry, and
preset shoot-through control, allows the use of inexpen-
sive N-channel power MOSFETs.
SC2602L features include temperature compensated
voltage reference, triangle wave oscillator and current
sense comparator circuitry. Power good signaling, shut-
down, and over voltage protection are also provided.
The SC2602L operates at a fixed 200kHz which is for
optimum compromise between efficiency, external com-
ponent size, and cost.
Two SC2602L can be used together to sequence two
voltage regulators for power up in telecom systems. The
power good of the first SC2602L connected to the en-
able of the second SC2602L makes this possible.
Figure 1. Typical distributed power supply
Synchronous operation for high efficiency (95%)
Features
R2
R7
R3
C3
+
C2
Q2
Q1
L1
C6
SS/SHDN
R6
C10
+
C9
R8
5V IN
12V IN
R1
C1
C8
R4
PWRGD
V_pullup
OVP
2.5V OUT
GND
GND
C5
U1
SC2602L
VCC
1
PWRGD
2
OVP
3
OCSET
4
PHASE
5
DH
6
PGND
7
DL
8
BST
9
BST
10
COMP
12
SS/SHDN
13
GND
14
SENSE
11
R5
C7
C4
D1
相關PDF資料 |
PDF描述 |
|---|---|
| SC2602LEVB | Synchronous Voltage Mode Controller for Distributed Power Supply |
| SC2602LSTRT | Synchronous Voltage Mode Controller for Distributed Power Supply |
| SC2602 | Synchronous Voltage Mode Controller for Distributed Power Supply Applications |
| SC2602A | Synchronous Voltage Mode Controller for Distributed Power Supply Applications |
| SC2602ASTRT | Synchronous Voltage Mode Controller for Distributed Power Supply Applications |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SC2602LEVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Synchronous Voltage Mode Controller for Distributed Power Supply |
| SC2602LSTRT | 制造商:Semtech Corporation 功能描述:Voltage Mode PWM Controller 0.8V 1A 14-Pin SOIC T/R 制造商:Semtech Corporation 功能描述:SC Series 6 mA 200 kHz SMT Synchronous Voltage Mode PWM Controller - SOIC-14 |
| SC2602STRT | 制造商:Semtech Corporation 功能描述:Voltage Mode PWM Controller 1A 14-Pin SOIC T/R |
| SC2603 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Simple PWM Boost Controller |
| SC2603ASK.TRT | 制造商:Semtech Corporation 功能描述: |
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