参数资料
| 型号： | SC198AMLTRT |
| 厂商： | Semtech |
| 文件页数： | 1/15页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC PROG .8A 20MLPQ |
| 标准包装： | 1 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 可编程 |
| 输入电压： | 2.7 V ~ 5.5 V |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 800mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-MLPQ |
| 包装： | 标准包装 |
| 供应商设备封装： | 20-MLPQ（4x4） |
| 其它名称： | SC198AMLDKR |
NOT RECOMMENDED FOR NEW DESIGN
SC198A
Dual DC-DC Buck Converter
with High Current Capability
POWER MANAGEMENT
Features
Input voltage range — 2.7V to 5.5V
Dual buck converters with independent control
High effi ciency — 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
Typical Application Circuit
Description
The SC198A is a dual high-effi ciency 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 effi ciency 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.
VBATT
C IN
VINA
VINR
VINB
ENA
SC198A
LXA
VOUTA
GNDA
4.7 μ H
C OUTA
VOUTA
CTLA0
September 26, 2007
CTLA1
CTLA2
ENB
CTLB0
CTLB1
CTLB2
MODE/SYNC
LXB
VOUTB
GNDB
GNDR
4.7 μ H
C OUTB
VOUTB
1
相关PDF资料 |
PDF描述 |
|---|---|
| SC198MLTRT | IC REG BUCK SYNC PROG .6A 20MLPQ |
| SC2440TETRT | IC REG BUCK 2A DL 16TSSOP |
| SC2443MLTRT | IC DUAL SYNC STP-DN CTRLR 24MLPQ |
| SC2446ITETRT | IC SYNC STEP DOWN CTRLR 28-TSSOP |
| SC2544TSTRT | IC REG CTRLR BUCK PWM VM 24TSSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SC198EVB | 制造商:SEMTECH 制造商全称: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 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 产品培训模块:Understanding SWIFT Step Down Dc/Dc Converters 标准包装:2,500 系列:SWIFT™ 类型:降压（降压） 输出类型:可调式 输出数:1 输出电压:1.23 V ~ 20 V 输入电压:5.5 V ~ 23 V PWM 型:电压模式 频率 - 开关:500kHz 电流 - 输出:3A 同步整流器:无 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm Width）裸露焊盘 包装:带卷 (TR) 供应商设备封装: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:线绕电阻器 - 透孔 .1 OHM 1W 1% +650 PPM RoHS:否 制造商:Bourns 电阻:10 Ohms 容差:5 % 功率额定值:7 W 温度系数:200 PPM / C 系列:FW 端接类型:Axial 工作温度范围:- 55 C to + 155 C 尺寸:9.5 mm Dia. x 26 mm L 封装:Ammo 产品:Power Resistors Wirewound High Energy |
发布紧急采购，3分钟左右您将得到回复。