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| 型号： | FAN5358S718X |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 1/13页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 1.8V .5A SC70-6 |
| 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： | 1.8V |
| 输入电压： | 2.7 V ~ 5.5 V |
| 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-TSSOP，SC-88，SOT-363 |
| 包装： | 标准包装 |
| 供应商设备封装： | SC-70-6 |
| 其它名称： | FAN5358S718XDKR |
March 2013
FAN5358
2MHz, 500mA, SC70 Synchronous Buck Regulator
Features
Description
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2MHz Nominal-Frequency Operation
25μA Typical Quiescent Current
500mA Output Current Capability
2.7V to 5.5V Input Voltage Range
1.0 to 1.8V Fixed Output Voltages
Low Ripple, Light-Load PFM Mode
Internal Soft-Start
Input Under-Voltage Lockout (UVLO)
Thermal Shutdown and Overload Protection
6-lead 2 x 2.2mm SC70
The FAN5358 is a step-down switching voltage regulator that
delivers a fixed output from an input voltage supply of 2.7V to
5.5V. Using a proprietary architecture with synchronous
rectification, the device is capable of delivering 500mA and
maintaining a very high efficiency of over 80% at load currents
as low as 1mA. The regulator operates at a nominal frequency
of 2MHz, which reduces the value of the external components
to as low as 2.2 ? H for the output inductor and 4.7μF for the
output capacitor.
At moderate and light loads, pulse frequency modulation is
used to operate the device in power-save mode with a typical
quiescent current of 25μA. Even with such a low quiescent
current, the part exhibits excellent transient response during
large load swings. In shutdown mode, the supply current
drops below 1μA, reducing power consumption.
Applications
FAN5358 is available in a 6-lead SC70 package.
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Cell Phones, Smart Phones
3G, 4G, WiFi ? , WiMAX ?, and WiBro ? Data Cards
Netbooks ? , Ultra-Mobile PCs
Typical Application
L1
SW
1
6
VIN
U1
f SW
L1
C IN
C OUT
GND
2
U1
5
GND
C IN
FAN5358
2MHz
2.2 ? H
2.2 ? F
4.7 ? F
VOUT
3
4
EN
C OUT
Figure 1. FAN5358 Typical Application
Trademarks are the property of their respective owners.
? 2009 Fairchild Semiconductor Corporation
FAN5358 ? Rev. 1.0.3
www.fairchildsemi.com
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