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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
SP6652ER 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
SP6652ER/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
SP6652ER-L 功能描述:开关变换器、稳压器与控制器 2.8V-5.5V 1400kHz temp -40C to 85C 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
SP6652ER-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
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