Datasheet > ISL91117

ISL91117

更新时间： 2024-09-20 00:59:59

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
12页	806K
描述
High Efficiency Synchronous Boost Converter with 4.2A Switches and Output Disconnect

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ISL91117 数据手册

DATASHEET

ISL91117

FN8569

Rev 3.00

March 7, 2014

High Efficiency Synchronous Boost Converter with 4.2A Switches and Output

Disconnect

The ISL91117 is a highly-integrated boost switching regulator

Features

for battery powered applications. The device provides a power

supply solution for products using dual-cell or three-cell

alkaline, NiCd or NiMH, or one-cell Li-ion or Li-polymer battery.

• Input voltage range: 1.8V to 4.8V

• Fixed 5V or adjustable output

• Output current: up to 1.5A (PVIN = 3.3V, VOUT = 5V)

• High efficiency: up to 96%

This device is capable of delivering an output current of 1.5A

with PVIN = 3.3V and VOUT = 5V. The use of a synchronous

rectifier maximizes efficiency at high loads. No-load quiescent

current of only 35µA optimizes efficiency under light-load

conditions. Forced PWM and/or synchronization to an external

clock may also be selected for noise sensitive applications.

• 35µA quiescent current maximizes light-load efficiency

• True input-output disconnect when disabled

• 2.6MHz switching frequency minimizes external component

size

The ISL91117 is designed for standalone applications and

supports 5V fixed output voltage or variable output voltages

with an external resistor divider. Power supply solution size is

minimized by a 2.34mm x 1.72mm WLCSP and a 2.6MHz

switching frequency, which allows for the use of tiny,

low-profile inductors and ceramic capacitors to minimize the

size of the solution.

• Selectable forced-PWM mode and external synchronization

• Fully protected for short-circuit, over-temperature and

undervoltage

• Small 2.34mm x 1.72mm WLCSP

Applications

• Smart phones and tablets

Related Literature

• AN1918, ISL91117II7-EVZ, ISL91117IIA-EVZ Evaluation

Boards

• Wireless communication devices

• Products including portable HDMI and USB-OTG

L1 1µH

100

VIN = 4.2V

VIN =

1.8V TO 4.8V

BLKG

PVIN

VIN = 3.6V

VOUT = 5V

VIN = 3.0V

22µF

VOUT

VIN = 2.7V

ISL91117

VIN

2x22µF

MODE

0.1

100

1000

LOAD CURRENT (mA)

FIGURE 1. TYPICAL FIXED OUTPUT APPLICATION

FIGURE 2. EFFICIENCY vs LOAD CURRENT (VOUT = 5V)

FN8569 Rev 3.00

March 7, 2014

Page 1 of 12

12 3 4 5 6 7...12

中文翻译

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与ISL91117相关器件

型号	品牌	获取价格	描述	数据表
ISL91117II7-EVZ	INTERSIL	获取价格	True input-output disconnect when disabled
ISL91117II7-EVZ	RENESAS	获取价格	High Efficiency Synchronous Boost Converter with 4.2A Switches and Output Disconnect
ISL91117II7Z-T	RENESAS	获取价格	High Efficiency Synchronous Boost Converter with 4.2A Switches and Output Disconnect
ISL91117II7Z-T	INTERSIL	获取价格	True input-output disconnect when disabled
ISL91117II7Z-T7A	RENESAS	获取价格	High Efficiency Synchronous Boost Converter with 4.2A Switches and Output Disconnect
ISL91117II7Z-T7A	INTERSIL	获取价格	True input-output disconnect when disabled
ISL91117IIA-EVZ	INTERSIL	获取价格	True input-output disconnect when disabled
ISL91117IIA-EVZ	RENESAS	获取价格	High Efficiency Synchronous Boost Converter with 4.2A Switches and Output Disconnect
ISL91117IIAZ-T	INTERSIL	获取价格	True input-output disconnect when disabled
ISL91117IIAZ-T	RENESAS	获取价格	High Efficiency Synchronous Boost Converter with 4.2A Switches and Output Disconnect

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