Datasheet > FAN49103

FAN49103

更新时间： 2024-11-08 01:19:27

品牌	Logo	应用领域
安森美 - ONSEMI		/
页数	文件大小	规格书
21页	1037K
描述
TinyPower I2C Buck-Boost Regulator

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中文翻译

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数据手册

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FAN49103 数据手册

December 2017

FAN49103 — 2.5 A, 1.8 MHz, TinyPower™ I²C Buck-

Boost Regulator

Features

Description

24 µA Typical PFM Quiescent Current

Above 95% Efficiency

Total Layout Area = 11.61 mm²

Input Voltage Range: 2.5 V to 5.5 V

Maximum Continuous Load Current:

The FAN49103 is a high efficiency buck-boost switching

mode regulator which accepts input voltages either

above or below the regulated output voltage. Using full-

bridge architecture with synchronous rectification, the

FAN49103 is capable of delivering up to 2.5 A while

regulating the output at 3.4 V. The FAN49103 exhibits

seamless transition between step-up and step-down

modes reducing output disturbances. The output voltage

and operation mode of the regulator can be

programmed through an I²C interface.

3.0 A at V_OUT=3.4 V, V_IN=3.3 V

2.5 A at V_OUT=3.4 V, V_IN=3.0 V

2.0 A at V_OUT=3.4 V, V_IN=2.5 V

At moderate and light loads, Pulse Frequency

Modulation (PFM) is used to operate the device in

power-save mode to maintain high efficiency. In PFM

mode, the part still exhibits excellent transient response

during load steps. At moderate to heavier loads or

Forced PWM mode, the regulator switches to PWM

fixed-frequency control. While in PWM mode, the

regulator operates at a nominal fixed frequency of

1.8 MHz, which allows for reduced external component

values.

I²C Compatible Interface

Programmable Output Voltage:

2.8 V to 4.0 V in 25 mV Steps

1.8 MHz Fixed-Frequency Operation in PWM Mode

Automatic / Seamless Step-up and Step-down

Mode Transitions

Forced PWM and Automatic PFM/PWM Mode

Selection

The FAN49103 is available in a 20-bump 1.615 mm x

2.015 mm with 0.4 mm pitch WLCSP.

0.5 µA Typical Shutdown Current

Low Quiescent Current Pass-Through Mode

Internal Soft-Start and Output Discharge

Low Ripple and Excellent Transient Response

Internally Set, Automatic Safety Protections

(UVLO, OTP, SCP, OCP)

Package: 20 Bump, 0.4 mm Pitch WLCSP

Applications

Smart Phones

Tablets, Netbooks^®, Ultra-Mobile PCs

Portable Devices with Li-ion Battery

2G/3G/4G Power Amplifiers

NFC Applications

Figure 1.

Typical Application

Ordering Information

Output

Discharge

Temperature

Range

Packing

Method

Device

Marking

Part Number

Package

FAN49103AUC340X

Yes

-40 to 85°C

20-Ball (WLCSP)

Tape and Reel

FAN49103 • Rev.2

www.onsemi.com

12 3 4 5 6 7...21

中文翻译

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与FAN49103相关器件

型号	品牌	获取价格	描述	数据表
FAN49103AUC330X	ONSEMI	获取价格	Buck-Boost Regulator, 2.5 A, 1.8 MHz, TinyPow
FAN49103AUC340X	ONSEMI	获取价格	TinyPower I2C Buck-Boost Regulator
FAN4931	FAIRCHILD	获取价格	Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifier
FAN4931IP5X	FAIRCHILD	获取价格	Ultra-Low Cost, Rail-to-Rail I/O, CMOS Amplifier
FAN4931IP5X	ONSEMI	获取价格	运算放大器，低功耗，轨对轨 I/O，超低成本，CMOS 运算放大器
FAN5009	FAIRCHILD	获取价格	Dual Bootstrapped 12V MOSFET Driver
FAN5009M	FAIRCHILD	获取价格	Dual Bootstrapped 12V MOSFET Driver
FAN5009M_NL	FAIRCHILD	获取价格	Half Bridge Based MOSFET Driver, PDSO8, 0.150 MM, LEAD FREE, SOIC-8
FAN5009MPX	FAIRCHILD	获取价格	Dual Bootstrapped 12V MOSFET Driver
FAN5009MX	FAIRCHILD	获取价格	Dual Bootstrapped 12V MOSFET Driver

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