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參數資料
| 型號： | SC2608 |
| 廠商： | Semtech Corporation |
| 英文描述： | Simple, Synchronous Voltage Mode PWM Controller |
| 中文描述： | 簡單，同步電壓模式PWM控制器 |
| 文件頁數： | 1/15頁 |
| 文件大?。?/td> | 385K |
| 代理商： | SC2608 |
POWER MANAGEMENT
Description
1
www.semtech.com
SC2608
Simple, Synchronous
Voltage Mode PWM Controller
Features
+3.3V or +5V or +12V input voltage
200kHz operation
High efficiency (>90%)
1% Reference voltage accuracy
Hiccup mode over current protection
Robust output drive
R
DS(ON)
Current sensing for protection
Industrial temperature range
SO-8 package
Integrated boot strap diode
Thermal Shut down
Fully WEEE and RoHS Compliant
Revision 4: October, 2005
The SC2608 is a versatile voltage-mode PWM controller
designed for use in step down DC/DC power supply appli-
cations. A simple, fixed frequency, highly efficient buck
regulator can be implemented using the SC2608 with mini-
mal external components. The input voltage range is from
+3.3V to +12V. Internal level shift and drive circuitry elimi-
nates the need for an expensive P-channel, high-side
MOSFET. The small device footprint allows for compact
circuit design.
SC2608 features include temperature compensated volt-
age reference, triangle wave oscillator, current limit com-
parator, and an externally compensated error amplifier.
Current limit is implemented by sensing the voltage drop
across the bottom MOSFET R
DS(ON)
.
The SC2608 operates at a fixed frequency of 200kHz
providing an optimum compromise between efficiency ,
external component size, and cost.
SC2608 has a thermal protection circuit, which is
activated if the junction temperature exceeds 150
O
C.
Termination supplies
Low cost microprocessor supplies
Peripheral card supplies
Industrial power supplies
High density DC/DC conversion
Figure 1
Applications
Typical Application Circuit
sense
VOUT
+12V
SC2608
COMP/SS
DL
GND
DH
BST
PHASE
VCC
SENSE
+12V/+5V/+3.3V
sense
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| SC2608EVB | Simple, Synchronous Voltage Mode PWM Controller |
| SC2608STRT | Simple, Synchronous Voltage Mode PWM Controller |
| SC2612E | 500kHz Step-Down DC/DC Converter |
| SC2612ESTRT | 500kHz Step-Down DC/DC Converter |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| SC2608A | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Simple, Synchronous Voltage Mode PWM Controller |
| SC2608AEVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Simple, Synchronous Voltage Mode PWM Controller |
| SC2608ASTRT | 制造商:Semtech Corporation 功能描述:Voltage Mode PWM Controller 8-Pin SO T/R 制造商:Semtech Corporation 功能描述:SC Series 6 A 270 kHz SMT Synchronous Voltage Mode PWM Controller - SOIC-8 |
| SC2608B | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Simple, Synchronous Voltage Mode PWM Controller |
| SC2608BEVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Simple, Synchronous Voltage Mode PWM Controller |
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