FAN5361UC13X

更新时间： 2024-09-26 03:57:27

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		稳压器
页数	文件大小	规格书
17页	1565K
描述
6MHz, 600mA TinyBuck⑩ Synchronous Buck Regulator

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FAN5361UC13X 数据手册

September 2008

FAN5361

6MHz, 600mA TinyBuck™ Synchronous Buck Regulator

Features

Description

6MHz Fixed-Frequency Operation

35µA Typical Quiescent Current

Best-in-Class Load Transient

The FAN5361 is a 600mA, step-down, switching voltage

regulator that delivers a fixed output from an input voltage

supply of 2.3V to 5.5V. Using a proprietary architecture with

synchronous rectification, the FAN5361 is capable of

delivering a peak efficiency of 92%, while maintaining

efficiency over 80% at load currents as low as 1mA.

600mA Output Current Capability

2.3V to 5.5V Input Voltage Range

1.0 to 1.82V Fixed Output Voltage

Low Ripple Light-Load PFM Mode

Forced PWM and External Clock Synchronization

Internal Soft-Start

The regulator operates at a nominal fixed frequency of 6MHz,

which reduces the value of the external components to 470nH

for the output inductor and 4.7µF for the output capacitor. The

PWM modulator can be synchronized to an external frequency

source.

Input Under-Voltage Lockout (UVLO)

Thermal Shutdown and Overload Protection

6-bump WLCSP, 0.4mm Pitch

6-pin 2 x 2mm UMLP

At moderate and light loads, pulse frequency modulation is

used to operate the device in power-save mode with a typical

quiescent current of 35µA. 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 6MHz. In

shutdown mode, the supply current drops below 1µA,

reducing power consumption. For applications that require

minimum ripple or fixed frequency, PFM mode can be

disabled using the MODE pin.

Applications

Cell Phones

Portable Media Players

WLAN, 3G, and 4G Data Cards

The FAN5361 is available in 6-bump, 0.4mm pitch, Wafer-

Level Chip-Scale Package (WLCSP) and a 6-lead 2 x 2mm

ultra-thin MLP package.

Typical Applications

MODE

VIN

A1 A2

B1 B2

C1 C2

C_IN

2.2 F

470nH

GND

C_OUT

4.7 F

Figure 1. Typical Applications

FAN5361 • Rev. 1.0.0

www.fairchildsemi.com

12 3 4 5 6 7...17

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