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| 型号： | SP6652ER-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 1A 10DFN |
| 标准包装： | 3,000 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.9 V ~ 5 V |
| 输入电压： | 2.85 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.4MHz |
| 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： | 10-VFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 10-DFN（3x3） |
Solved by
TM
1A, High Efficiency, Fixed 1.4 MHz
Current Mode PWM Buck Regulator
SP6652
P GND
S GND
SP6652
FEATURES
■ 1A Output Current
■ 1.4MHz Constant Frequency Operation
■ 97% Efficiency Possible
■ 0.5μA (Max.) Shutdown Current
■ Adjustable Output Voltage
■ No External FETs or Schottky Diode Required
■ Uses Small Value Inductors and Ceramic
Output Capacitors
■ Low Dropout Operation: 100% Duty Cycle
■ Soft Start and Thermal Shutdown Protection
■ Easy Frequency Synchonization
■ Lead Free, RoHS Compliant package: l
Small (3mm X 3mm) 10 Pin DFN or MSOP
1 10
2 9
FB 3 8
10 Pin DFN
COMP 4 7
SD 5 6
APPLICATIONS
■ Mobile Phones
■ PDAs
■ DSCs
■ MP3 Players
■ USB Devices
■ Point of Use Power
LX
P VIN
S VIN
SYNC
MODE
DESCRIPTION
The SP6652 is a high efficiency, synchronous buck regulator ideal for portable applications
using one Li-Ion cell, with up to 1A of output current. The 1.4MHz switching frequency and
PWM control loop are optimized for a small value inductor and ceramic output capacitor,
for space constrained portable designs. In addition, the input voltage range of 2.7V to 5.5V;
excellent transient response, output accuracy, and ability to transition into 100% duty cycle
operation -- further extending useful battery life -- make the SP6652 a superior choice for
a wide range of portable power applications. A logic level shutdown control, external clock
synchronization, and forced-PWM or automatic control inputs are provided. Other features
include soft-start, over current protection and 140oC over-temperature shutdown .
TYPICAL APPLICATION CIRCUIT
V OUT
3.3V at 1A
4.7 μ H
1
P GND
LX
10
2
10 μ F
340k ?
100k ?
4k ?
S GND
3 FB
4 COMP
5 SD
P VIN
SP6652
S VIN
SYNC
MODE
9
8
7
6
3.6V - 5.5V
V IN
10 ?
1 μ F 10 μ F
10nF
ENABLE
SHUTDOWN
Oct10-07 RevJ
SP6652 1A, High Efficiency, Current Mode PWM Buck Regulator
? 2007 Sipex Corporation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP6652EU | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP6652EU/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:1A, High Efficiency, High Frequency Current Mode PWM Buck Regulator |
| SP6652EU-ES | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:1A, High Efficiency, Fixed 1.4 MHz Current Mode PWM Buck Regulator |
| SP6652EU-L | 功能描述:开关变换器、稳压器与控制器 High Eff Synchronous Step-Down Converter RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| SP6652EU-L/TR | 功能描述:开关变换器、稳压器与控制器 High Eff Synchronous Step-Down Converter RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
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