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| 型号： | ISL9103IRUWZ-T |
| 厂商： | Intersil |
| 文件页数： | 1/13页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 1.2V .5A 6UTDFN |
| 产品培训模块： | Patient Monitoring and Diagnostic Equipment Solutions |
| 标准包装： | 3,000 |
| 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： | 2.7 V ~ 6 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 2.4MHz |
| 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-UTDFN（1.6x1.6） |
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ISL9103, ISL9103A
Data Sheet
November 24, 2009
FN6828.2
500mA 2.4MHz Low I Q High Efficiency
Synchronous Buck Converter
The ISL9103, ISL9103A is a 500mA, 2.4MHz step-down
regulator, which is ideal for powering low-voltage
microprocessors in compact devices such as PDAs and
cellular phones. It is optimized for generating low output
voltages down to 0.8V. The supply voltage range is from
2.7V to 6V allowing the use of a single Li+ cell, three NiMH
cells or a regulated 5V input. It has guaranteed minimum
output current of 500mA. A high switching frequency of
2.4MHz pulse-width modulation (PWM) allows using small
external components. Under light load condition, the device
operates at low I Q skip mode with typical 20μA quiescent
current for highest light load efficiency to maximize battery
life, and it automatically switches to fixed frequency PWM
mode under heavy load condition.
The ISL9103, ISL9103A includes a pair of low
ON-resistance P-Channel and N-Channel internal MOSFETs
to maximize system efficiency and minimize the external
component count. 100% duty-cycle operation allows less
than 300mV dropout voltage at 500mA.
The ISL9103, ISL9103A offers internal digital soft-start,
enable for power sequence, overcurrent protection and
thermal shutdown functions. In addition, the ISL9103,
ISL9103A offers a quick bleeding function that discharges
the output capacitor when the IC is disabled.
The ISL9103, ISL9103A is offered in a 1.6x1.6mm μTDFN
package. The complete converter occupies less than
0.5cm 2 .
Pinout
ISL9103, ISL9103A
(6 LD 1.6x1.6 μTDFN)
TOP VIEW
Features
? High Efficiency Integrated Synchronous Buck Regulator
with up to 95% Efficiency
? 2.7V to 6.0V Supply Voltage
? 2.4MHz PWM Switching Frequency
? 500mA Guaranteed Output Current
? 3% Output Accuracy Over-Temperature and Line for Fixed
Output Options
? 20μA Quiescent Supply Current in Skip Mode
? Less than 1μA Logic Controlled Shutdown Current
? 100% Maximum Duty Cycle for Lowest Dropout
? Ultrasonic Switching Frequency at Skip Mode to Prevent
Audible Frequency Noise (For ISL9103A Only)
? Discharge Output Capacitor when Disabled
? Internal Digital Soft-Start
? Peak Current Limiting, Short Circuit Protection
? Over-Temperature Protection
? Chip Enable
? Small 6 Pin 1.6mmx1.6mm μTDFN Package
? Pb-Free (RoHS Compliant)
Applications
? Single Li-ion Battery-Powered Equipment
? Mobile Phones and MP3 Players
? PDAs and Palmtops
? WCDMA Handsets
? Portable Instruments
VIN 1
EN 2
NC 3
1
6 SW
5 GND
4 FB
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2009. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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