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参数资料
| 型号： | SC4626FSKTRT |
| 厂商： | Semtech |
| 文件页数： | 1/22页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 1.3V 1A SOT23-5 |
| 标准包装： | 1 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 1.3V |
| 输入电压： | 2.9 V ~ 5.5 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 2.5MHz |
| 电流 - 输出： | 1A |
| 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： | SC-74A，SOT-753 |
| 包装： | 标准包装 |
| 供应商设备封装： | SOT-23-5 |
| 其它名称： | SC4626FSKDKR |
POWER MANAGEMENT
Features
SC4626
2.5MHz, 1A Synchronous Step
Down Regulator in SOT23-5
Description
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V IN Range: 2.9 – 5.5V
V OUT Options: 1.0 - 3.3V
Up to 1A Output Current
2.5MHz Switching Frequency
Efficiency Up to 93%
Low Output Noise Across Load Range
Excellent Transient Response
Start Up into Pre-Bias Output
100% Duty-Cycle Low Dropout Operation
<1μA Shutdown Current
Internal Soft Start
Input Under-Voltage Lockout
Output Over-Voltage, Current Limit Protection
Over-Temperature Protection
Adjustable Output Voltage
The SC4626 is a high efficiency, synchronous step-down
regulator providing up to 1A output current in a SOT23-
5 package. The device requires only three external filter
components for a complete step-down regulator solution.
The input voltage range is 2.9 to 5.5V with either factory
programmed outputs from 1.0 to 3.3V or adjustable
output via an external resistor divider.
The converter operates at fixed 2.5MHz switching
frequency allowing small L/C filtering components.
The voltage mode architecture is compatible with chip
inductors and capacitors for minimum PCB footprint and
lowest overall system cost.
Up to 93% efficiency is achieved with low R DS(ON) internal
switches. PWM constant frequency operation ensures
low output ripple across the load range. 100% duty-cycle
provides 300mV dropout voltage at 1A which extends
the minimum input voltage for 2.5V and 3.3V outputs.
Excellent transient response is achieved with no external
compensation components.
? SOT23-5 Package
? Fully WEEE and RoHS Compliant
Applications
? Bluetooth Radios
The SC4626 provides input under-voltage, output over-
voltage, output short circuit and over-temperature
protection to safeguard the device and system under fault
conditions. The regulator provides integrated soft-start to
minimize inrush currents. Standby quiescient current is
less than 1μA.
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DSC and PMPs
GPS Devices
xDSL Systems
POL Regulators
Portable HDD
Wireless LAN
The SC4626 is available in a SOT23-5 package.
Typical Application Circuit
V IN
2.9V to 5.5V
C IN
10μF
VIN
GND
LX
L
2.2μH
C OUT
10μF
V OUT
1.20V/1A
Enable
EN
VOUT
SC4626C
August 27, 2010
1
www.semtech.com
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相关代理商/技术参数 |
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| SC4626HSK.TRT | 制造商:SEMTECH 功能描述:I.C. |
| SC4626HSKTRT | 功能描述:IC REG BUCK SYNC 1.5V 1A SOT23-5 RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 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:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| SC4626SK-1.8TRT | 制造商:Semtech Corporation 功能描述: |
| SC4626SK-3.3TRT | 制造商:Semtech Corporation 功能描述: |
| SC4626XEVB | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:2.5MHz, 1A Synchronous Step Down Regulator in SOT23-5 |
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