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参数资料
| 型号： | FAN5354MPX |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 1/14页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 3A 12MLP |
| 标准包装： | 1 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 4.95 V |
| 输入电压： | 2.7 V ~ 5.5 V |
| 频率 - 开关： | 3MHz |
| 电流 - 输出： | 3A |
| 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： | 12-WFDFN 裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 12-MLP（3.5X3） |
| 其它名称： | FAN5354MPXDKR |
December 2012
FAN5354
3 MHz, 3 A Synchronous Buck Regulator
Features
Description
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3 MHz Fixed-Frequency Operation
Best-in-Class Load Transient
3 A Output Current Capability
2.7 V to 5.5 V Input Voltage Range
Adjustable Output Voltage: 0.8 to 2.0 V
PFM Mode for High Efficiency in Light Load (Forced PWM
Available on MODE Pin)
Minimum PFM Frequency Avoids Audible Noise
270 μA Typical Quiescent Current in PFM Mode
External Frequency Synchronization
Low Ripple Light-Load PFM Mode with Forced
PWM Control
Power Good Output
Internal Soft-Start
Input Under-Voltage Lockout (UVLO)
Thermal Shutdown and Overload Protection
12-Lead 3x3.5 mm MLP
The FAN5354 is a step-down switching voltage regulator that
delivers an adjustable output from an input voltage supply of
2.7 V to 5.5 V. Using a proprietary architecture with
synchronous rectification, the FAN5354 is capable of
delivering 3 A at over 85% efficiency, while maintaining a
very high efficiency of over 80% at load currents as low as
2 mA. The regulator operates at a nominal fixed frequency of
3 MHz, which reduces the value of the external components
to 470 nH for the output inductor and 10 μF for the output
capacitor. Additional output capacitance can be added to
improve regulation during load transients without affecting
stability and inductance up to 1.2 μH may be used with
additional output capacitance.
At moderate and light loads, pulse frequency modulation
(PFM) is used to operate the device in power-save mode
with a typical quiescent current of 270 μA. Even with such a
low quiescent current, the part exhibits excellent transient
response during large load swings. At higher loads, the
system automatically switches to fixed-frequency control,
operating at 3 MHz. In shutdown mode, the supply current
drops below 1 μA, reducing power consumption. PFM mode
can be disabled if constant frequency is desired. To avoid
audible noise, the regulator limits its minimum PFM
frequency. The FAN5354 is available in 12-lead 3x3.5 mm
MLP package.
Applications
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Set-Top Box
Hard Disk Drive
Communications Cards
DSP Power
Figure 1. Typical Application
Ordering Information
Part Number
FAN5354MPX
? 2009 Fairchild Semiconductor Corporation
Temperature Range
-40 to 85°C
Package
MLP-12, 3 x 3.5 mm
Packing Method
Tape and Reel
www.fairchildsemi.com
FAN5354 ? Rev. 1.0.7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| FAN5355 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:1A / 0.8A, 3MHz Digitally Programmable TinyBuckTM Regulator |
| FAN5355_10 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:1A / 0.8A, 3MHz Digitally Programmable Regulator |
| FAN53555BUC08X | 制造商:Fairchild Semiconductor Corporation 功能描述:5A, 2.4 MHZ, DIGITALLY PROGRAMMABLE TINYBUCK TM - Tape and Reel 制造商:Fairchild Semiconductor Corporation 功能描述:IC REG PROGR 4A 2.4MHZ 20WLCSP 制造商:Fairchild Semiconductor Corporation 功能描述:TAPE REEL / 5A, 2.4 MHZ, DIGITALLY PROGRAMMABLE TINYBUCK TM |
| FAN53555BUC09X | 功能描述:直流/直流开关调节器 5 A, 2.4 MHz, Digitally Programmable TinyBuck Regulator RoHS:否 制造商:Fairchild Semiconductor 最大输入电压: 开关频率: 输出电压: 输出电流: 输出端数量: 最大工作温度: 安装风格: 封装 / 箱体: |
| FAN53555BUC24X | 制造商:Fairchild Semiconductor Corporation 功能描述:5A, 2.4 MHZ, DIGITALLY PROGRAMMABLE TINYBUCK TM - Tape and Reel 制造商:Fairchild Semiconductor Corporation 功能描述:IC REG PROGR 4A 2.4MHZ 20WLCSP 制造商:Fairchild Semiconductor Corporation 功能描述:TAPE REEL / 5A, 2.4 MHZ, DIGITALLY PROGRAMMABLE TINYBUCK TM |
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