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參數資料
| 型號： | SC192 |
| 廠商： | Semtech Corporation |
| 英文描述： | Synchronous Buck Converter with Integrated Power Devices |
| 中文描述： | 同步降壓轉換器，集成了功率器件 |
| 文件頁數： | 1/15頁 |
| 文件大小： | 272K |
| 代理商： | SC192 |
1
www.semtech.com
SC192
Synchronous Buck Converter
with Integrated Power Devices
POWER MANAGEMENT
Description
The SC192 is a synchronous step-down converter with
integrated power devices designed for battery operated
systems. The internal power switches reduce system
size and cost. In addition, an efficiency of 95% can be
achieved for significant line and load ranges. The SC192
is designed for single-cell Li-Ion battery applications, but
also performs well in fixed 3.3V or 5V input circuits.
Revision 8, March 26, 2007
Features
2.7V to 7V Input Range
Output Adjustable from 0.75V to Vin
Fixed Frequency or PSAVE for Maximum
Efficiency Over Wide Load Current Range
700mA Guaranteed Output Current
No Schottky Diode Required
35
μ
A Quiescent Current
100% Duty Cycle in Dropout
95% Efficiency
Fast Transient Response
Over Temperature Protection
Space-saving Micro Lead-Frame Package
MLPD-10 3x3
Typical Application Circuit
Applications
The SC192 has a flexible clocking scheme. It can be
synchronized to an external oscillator, fixed to the inter-
nal oscillator, or allowed to modulate the frequency dur-
ing light loads (PSAVE) for maximum battery life, by the
method called pulse frequency modulation (PFM). Shut-
down places the switches in a high impedance state and
turns off all control circuitry to achieve a typical quies-
cent current of 0.1
μ
A.
Line and load regulation is to +/-0.5% of the output volt-
age. The internal MOSFET switches provide >1A peak
current to provide a DC output of at least 700mA.
Grounding the ILIM pin reduces the current limit by half.
The SC192 can achieve 100% duty cycle for excellent
low dropout performance and comes in a tiny MLPD-10,
3 x 3 package having a maximum height of 1mm.
Cell Phones
Cordless Phones
Notebook and Subnotebook Computers
PDAs and Mobile Communicators
1 Li-Ion or 3 NiMH/NiCd Powered Devices
VIN
EN
ILIM
BP
GND
COMP
SYNC/PWM
PGND
ADJ
LX
SC192
Vin = 2.7V to 7V
C1
C3
L1
C5
R1
R2
C6
R8
C4
Vout = 0.75V to Vin
1
8
6
2
3
4
7
10
5
9
相關PDF資料 |
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| SC192IMLTRT | Synchronous Buck Converter with Integrated Power Devices |
| SC192EVB | Synchronous Buck Converter with Integrated Power Devices |
| SC192IMLTR | Synchronous Buck Converter with Integrated Power Devices |
| SC194A | 1A Synchronous Buck Converter with Integrated Power Devices |
| SC194AEVB | 1A Synchronous Buck Converter with Integrated Power Devices |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SC192EVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Synchronous Buck Converter with Integrated Power Devices |
| SC192IMLTR | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Synchronous Buck Converter with Integrated Power Devices |
| SC192IMLTRT | 功能描述:IC REG BUCK ADJ 0.7A 10MLPD RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 標準包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數:1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開關:2MHz 電流 - 輸出:500mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:6-UFDFN 包裝:帶卷 (TR) 供應商設備封裝:6-SON（1.45x1） 產品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| SC194A | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:1A Synchronous Buck Converter with Integrated Power Devices |
| SC194AEVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:1A Synchronous Buck Converter with Integrated Power Devices |
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