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參數資料
| 型號： | SC198AMLTRT |
| 廠商： | Semtech Corporation |
| 英文描述： | Dual DC-DC Buck Converter with High Current Capability |
| 中文描述： | 雙的DC - DC降壓轉換器高電流能力 |
| 文件頁數： | 1/15頁 |
| 文件大小： | 364K |
| 代理商： | SC198AMLTRT |
POWER MANAGEMENT
1
SC198A
Dual DC-DC Buck Converter
with High Current Capability
Features
Input voltage range — 2.7V to 5.5V
Dual buck converters with independent control
High efficiency — over 90% peak
Up to 800mA Load
Programmable output voltages per channel — 8
Fixed-frequency operation — 1MHz
Optional SYNC clock input
Optional power-save under light-load conditions
Shutdown current <1μA
Soft-start to limit in-rush current
4mm x 4mm MLPQ package
Applications
Mobile phones
Cordless phones
MP3 players
Digital cameras
PDAs
Single Li-Ion cell or (3) NiMH/NiCd cell devices
Digital multimedia broadcast (DMB) devices
Portable gaming systems
Description
The SC198A is a dual high-efficiency synchronous buck
converter designed for use in low power applications.
Each converter is capable of supplying up to 800mA of
average current at one of eight programmable output
voltages used as microprocessor supply voltages.
The SC198A uses a single control logic block for the two
converters, but their controls can be set independently.
The device uses a flexible clocking method allowing the
user to set the fixed internal 1MHz oscillator or synchro-
nize the clock to an external source. The device also has an
optional power-save mode that optimizes efficiency for
light loads.
The SC198A provides output voltage flexibility while con-
serving board space by using control pins to select the
output voltage. This eliminates at least four parts from the
traditional dual buck converter bill of materials.
Typical Application Circuit
September 26, 2007
4.7
μ
H
4.7
μ
H
VINA
VINR
VINB
ENA
CTLA0
CTLA1
CTLA2
ENB
CTLB0
CTLB1
CTLB2
LXA
VOUTA
GNDA
LXB
VOUTB
GNDB
MODE/SYNC
GNDR
C
IN
C
OUTA
C
OUTB
SC198A
VOUTA
VOUTB
VBATT
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相關代理商/技術參數 |
參數描述 |
|---|---|
| SC198EVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Dual DC-DC Buck Converter with High Current Capability |
| SC198MLTRT | 功能描述:IC REG BUCK SYNC PROG .6A 20MLPQ RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:- 產品培訓模塊:Understanding SWIFT Step Down Dc/Dc Converters 標準包裝:2,500 系列:SWIFT™ 類型:降壓（降壓） 輸出類型:可調式 輸出數:1 輸出電壓:1.23 V ~ 20 V 輸入電壓:5.5 V ~ 23 V PWM 型:電壓模式 頻率 - 開關:500kHz 電流 - 輸出:3A 同步整流器:無 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm Width）裸露焊盤 包裝:帶卷 (TR) 供應商設備封裝:8-SO PowerPad 配用:296-19710-ND - EVALUATION MOD FOR TPS5431-173 |
| SC19WP18FT28PVGR | 制造商:STMicroelectronics 功能描述:TRUSTED PLATFORM MODULE (TPM - Tape and Reel |
| SC1A | 制造商:CAMDENBOSS 功能描述:ENCLOSURE CONTROL YELLOW 1 制造商:CAMDENBOSS 功能描述:ENCLOSURE, CONTROL, YELLOW, 1 HOLE 制造商:CAMDENBOSS 功能描述:ENCLOSURE, CONTROL, YELLOW, 1 HOLE; Enclosure Type:Push Button; Enclosure Material:ABS; Body Colour:Black; External Height - Imperial:3.346"; External Height - Metric:85mm; External Width - Imperial:2.756"; External Width - ;RoHS Compliant: Yes |
| SC1A.1 | 功能描述:線繞電阻器 - 透孔 .1 OHM 1W 1% +650 PPM RoHS:否 制造商:Bourns 電阻:10 Ohms 容差:5 % 功率額定值:7 W 溫度系數:200 PPM / C 系列:FW 端接類型:Axial 工作溫度范圍:- 55 C to + 155 C 尺寸:9.5 mm Dia. x 26 mm L 封裝:Ammo 產品:Power Resistors Wirewound High Energy |
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