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参数资料
| 型号： | FAN5355UC08X |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 1/26页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 12WLCSP |
| 标准包装： | 3,000 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.75 V ~ 1.4375 V |
| 输入电压： | 2.7 V ~ 5.5 V |
| 频率 - 开关： | 3MHz |
| 电流 - 输出： | 1.1A |
| 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-UFBGA，WLCSP |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 12-WLCSP |
November 2011
FAN5355
1.1A / 1A / 0.8A, 3MHz Digitally Programmable Regulator
Features
Description
an output-voltage range adjustable via I C? interface from
High-Speed mode I C specifications, allowing transfers up to
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93% Efficiency at 3MHz
800mA, 1A, or 1.1A Output Current
I 2 C?-Compatible Interface up to 3.4Mbps
6-bit V OUT Programmable from 0.75V to 1.975V
2.7V to 5.5V Input Voltage Range
3MHz Fixed-Frequency Operation
Excellent Load and Line Transient Response
Small Size, 1 ? H Inductor Solution
±2% PWM DC Voltage Accuracy
35ns Minimum On-Time
High-Efficiency, Low-Ripple, Light-Load PFM
Smooth Transition between PWM and PFM
37 ? A Operating PFM Quiescent Current
Pin-Selectable or I 2 C? Programmable Output Voltage
On-the-Fly External Clock Synchronization
10-lead MLP (3 x 3mm) or 12-bump CSP Packages
The FAN5355 device is a high-frequency, ultra-fast transient
response, synchronous step-down DC-DC converter
optimized for low-power applications using small, low-cost
inductors and capacitors. The FAN5355 supports up to
800mA, 1A, or 1.1A load current.
The device is ideal for mobile phones and similar portable
applications powered by a single-cell Lithium-Ion battery. With
2
0.75V to 1.975V, the device supports low-voltage DSPs and
processors, core power supplies, and memory modules in
smart phones, PDAs, and handheld computers.
The FAN5355 operates at 3MHz (nominal) fixed switching
frequency using either its internal oscillator or an external
SYNC frequency.
During light-load conditions, the regulator includes a PFM
mode to enhance light-load efficiency. The regulator
transitions smoothly between PWM and PFM modes with no
glitches on V OUT . In hardware shutdown, the current
consumption is reduced to less than 200nA.
The serial interface is compatible with Fast/Standard and
2
3.4Mbps. This interface is used for dynamic voltage scaling
Applications
? Cell Phones, Smart Phones
? 3G, WiFi ? , WiMAX?, and WiBro ? Data Cards
? Netbooks ? , Ultra-Mobile PCs
? SmartReflex?-Compliant Power Supply
? Split Supply DSPs and ? P Solutions OMAP?, XSCALE?
? Mobile Graphic Processors (NVIDIA ? , ATI)
? LPDDR2 and Memory Modules
with 12.5mV voltage steps for reprogramming the mode of
operation (PFM or Forced PWM), or to disable/enable the
output voltage.
The chip's advanced protection features include short-circuit
protection and current and temperature limits. During a
sustained over-current event, the IC shuts down and restarts
after a delay to reduce average power dissipation into a fault.
During startup, the IC controls the output slew rate to minimize
input current and output overshoot at the end of soft start. The
IC maintains a consistent soft-start ramp, regardless of output
load during startup.
The FAN5355 is available in 10-lead MLP (3x3mm) and
12-bump WLCSP packages.
All trademarks are the property of their respective owners.
? 2008 Fairchild Semiconductor Corporation
FAN5355 ? Rev. 1.1.0
www.fairchildsemi.com
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| FAN5358 | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:2MHz, 500mA, SC70 Synchronous Buck Regulator |
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| FAN5358S710X | 功能描述:DC/DC 开关控制器 2MHz 500mA Sync. Buck Regulator RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| FAN5358S712X | 功能描述:DC/DC 开关控制器 2MHz 500mA Sync. Buck Regulator RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| FAN5358S713X | 功能描述:DC/DC 开关控制器 2MHz 500mA Sync. Buck Regulator RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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