参数资料
型号: SP6652EU-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 10MSOP
标准包装: 2,500
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:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
包装: 带卷 (TR)
供应商设备封装: 10-MSOP
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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