Datasheet > ISL91128IINZ-T

ISL91128IINZ-T

更新时间： 2023-12-18 00:00:00

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
17页	999K
描述
High Efficiency Buck-Boost Regulator with 4.5A Switches and I2C Interface

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ISL91128IINZ-T 数据手册

DATASHEET

ISL91128

FN8732

Rev.3.00

May 3, 2018

High Efficiency Buck-Boost Regulator with 4.5A Switches and I C Interface

The ISL91128 is a high-current, buck-boost switching regulator

Features

for systems using new battery chemistries. It uses the Renesas

• Accepts input voltages above or below regulated output

voltage

proprietary buck-boost algorithm to maintain voltage

regulation while providing excellent efficiency and very low

output voltage ripple when the input voltage is close to the

output voltage. The device also includes a selectable Bypass

mode for low power consumption in applications that have a

Sleep or Low Power mode.

• Automatic and seamless transitions between Buck and

Boost modes

• I C interface

• Input voltage range: 1.8V to 5.5V

The ISL91128 is capable of delivering at least 2.2A continuous

• Continuous output current: up to 2.4A (PVIN = 2.5V,

output current (V

= 3.3V) across a battery voltage range of

OUT

= 3.3V)

OUT

2.5V to 4.35V. This maximizes the energy utilization of

advanced, single-cell Li-ion battery chemistries that have

significant capacity left at voltages below the system voltage.

Its fully synchronous low ON-resistance 4-switch architecture

and a low quiescent current of only 30µA optimize efficiency

under all load conditions.

• High efficiency: up to 96%

• 30µA quiescent current maximizes light-load efficiency

• Selectable bypass power saving mode operation

• 2.5MHz switching frequency minimizes external component

size

The ISL91128 supports a broader set of programmable

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

undervoltage

features that can be accessed using an I C bus interface. With

a programmable output voltage range of 1.9V to 5.0V, the

ISL91128 is ideal for applications requiring dynamically

changing supply voltages. A programmable slew rate can be

selected to provide smooth transitions between output voltage

settings.

• Small 2.15mmx1.74mm WLCSP

Applications

• Brownout-free system voltage for smart phones and tablet

PCs

The ISL91128 is available in a 20 bump, 0.4mm pitch WLCSP

(2.15mmx1.74mm) with a 2.5MHz switching frequency, which

further reduces the size of external components.

• Wireless communication devices

• 2G/3G/4G RF power amplifiers

Related Literature

For a full list of related documents, visit our website

• ISL91128 product page

100

ISL91128IINZ

VIN = 4.2V

VIN = 3.3V

VIN = 3.6V

1.8V TO 5.5V

IN =

LX1

PVIN

1µH

10µF

LX2

= 3.3V

VIN

OUT

VOUT

VIN = 2.8V

2x22µF

SDA

SCL

VIN = 3V

100

1000

LOAD CURRENT (mA)

FIGURE 1. TYPICAL APPLICATION

FIGURE 2. EFFICIENCY: V

OUT

= 3.3V, T = +25°C

FN8732 Rev.3.00

May 3, 2018

Page 1 of 17

12 3 4 5 6 7...17

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与ISL91128IINZ-T相关器件

型号	品牌	描述	获取价格	数据表
ISL91128IINZ-T7A	RENESAS	High Efficiency Buck-Boost Regulator with 4.5A Switches and I2C Interface	获取价格
ISL9112IRT7EVAL1Z	INTERSIL	1.2A High Efficiency Buck-Boost Regulators	获取价格
ISL9112IRT7Z	INTERSIL	1.2A High Efficiency Buck-Boost Regulators Output Current: Up to 1.2A	获取价格
ISL9112IRT7Z	RENESAS	1.2A High Efficiency Buck-Boost Regulator; DFN12; Temp Range: -40° to 85°C	获取价格
ISL9112IRT7Z-T	RENESAS	1.2A High Efficiency Buck-Boost Regulator; DFN12; Temp Range: -40° to 85°C	获取价格
ISL9112IRT7Z-T13	RENESAS	SWITCHING REGULATOR	获取价格

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