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參數資料
| 型號： | SC2608B |
| 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： | 1/11頁 |
| 文件大小： | 258K |
| 代理商： | SC2608B |
POWER MANAGEMENT
Description
1
www.semtech.com
SC2608B
Simple, Synchronous
Voltage Mode PWM Controller
Features
+5V or +12V input voltage
250kHz operation
High efficiency (>90%)
1.25% Voltage feedback accuracy over tempera-
ture
Hiccup mode over current protection
1.2A output drive
R
DS(ON)
Current sensing for protection
Industrial temperature range
Available in SO-8 package
Integrated boot strap diode
Thermal Shut down
Fully WEEE and RoHS Compliant
Revision 4: Jan. 2007
The SC2608B is a versatile voltage-mode PWM control-
ler designed for use in step down DC/DC power supply
applications. A simple, fixed frequency, highly efficient
buck regulator can be implemented using the SC2608B
with minimal external components. The input voltage
range is from +5V to +12V. Internal level shift and drive
circuitry eliminates the need for an expensive P-channel,
high-side MOSFET. The small device footprint allows for
compact circuit design.
SC2608B features include temperature compensated
voltage reference, triangle wave oscillator, current limit
comparator, and an externally compensated error ampli-
fier. Current limit is implemented by sensing the voltage
drop across the bottom MOSFET R
DS(ON)
.
The SC2608B operates at a fixed frequency of 250kHz
providing an optimum compromise between efficiency ,
external component size, and cost.
SC2608B 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
相關PDF資料 |
PDF描述 |
|---|---|
| SC2608BEVB | Simple, Synchronous Voltage Mode PWM Controller |
| SC2608BSTRT | Simple, Synchronous Voltage Mode PWM Controller |
| SC2608 | Simple, Synchronous Voltage Mode PWM Controller |
| SC2608EVB | Simple, Synchronous Voltage Mode PWM Controller |
| SC2608STRT | Simple, Synchronous Voltage Mode PWM Controller |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SC2608BEVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Simple, Synchronous Voltage Mode PWM Controller |
| SC2608BSTRT | 功能描述:IC REG CTRLR BUCK PWM VM 8-SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 切換控制器 系列:- 標準包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數:1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX |
| SC2608EVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Simple, Synchronous Voltage Mode PWM Controller |
| SC2608S.TRT | 制造商:Semtech Corporation 功能描述: |
| SC2608strt | 制造商:Semtech Corporation 功能描述: |
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