Datasheet > ISL91133

ISL91133

更新时间： 2023-12-20 18:45:50

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
14页	772K
描述
High Efficiency 2.3A Boost Regulator With Input-to-Output Bypass

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ISL91133 数据手册

DATASHEET

ISL91133

FN8680

Rev 1.00

Jul 12, 2018

High Efficiency 2.3A Boost Regulator with Input-to-Output Bypass

The ISL91133 is an integrated boost switching regulator for

Features

battery powered applications. The device provides a power

supply solution for products using a one cell Li-ion or

Li-polymer battery.

• Input voltage range: 2.35V to 5.4V

• Output current: up to 2.3A (V = 2.5V, V

= 3.3V)

IN OUT

The device is capable of delivering up to 2.3A output current

• Burst current up to 2.5A (V = 2.5V, V

= 3.3V,

IN OUT

from V = 2.5V and V

= 3.3V. The no load quiescent

< 600µs, T = 4.6ms)

IN OUT

• High efficiency: up to 96%

current is only 108μA in Boost mode and 45μA in Forced

Bypass mode, which significantly reduces the standby

consumption.

• 108µA quiescent current minimizes standby consumption in

Boost mode, 45µA in Forced Bypass mode

The ISL91133 offers a Bypass mode operation where the

output is directly connected to the input through a 38mΩ

MOSFET to allow a significantly lower dropout voltage. The

Bypass mode can be entered by an external command, or by

auto bypass. The Forced Bypass mode allows the output

voltage to operate close to the input voltage and improves the

efficiency under these conditions.

• 2.5MHz switching frequency minimizes external component

size

• Forced Bypass or Auto Bypass modes with a 38mΩ switch

• PFM mode at light load currents

• Fully protected for overcurrent, over-temperature, and

undervoltage

The ISL91133 is designed to support 6 fixed output voltages

ranging from 3.15V to 5V. A voltage select pin is available for

each output variant to scale up the output voltage by a small

offset to compensate the load transient droop.

• Load disconnect when disabled

• Small 1.78mmx1.78mm WLCSP

Applications

The ISL91133 requires only an inductor and a few external

components to operate. The 2.5MHz switching frequency

further reduces the size of external components.

• Smartphones and tablet PCs

• Wireless communication devices

• 2G/3G/4G RF power amplifiers

• USB OTG power source

The ISL91133 is available in a 16 bump, 0.4mm pitch,

1.78mmx1.78mm WLCSP.

Related Literature

For a full list of related documents, visit our website

• ISL91133 product page

100

V_IN

L₁

2.35V TO 5.4V

_OUT= 3.3V TO V_IN

UP TO 2.3A

ISL91133IIMZ

0.47µH

VOUT

C₂

2x22µF

C₁

2.7V

22µF

VIN

2.5V

AUTO BYPASS

BYPS

VSEL

R₁

FORCED BYPASS

RESET

V_OUTHI

V_OUTLO

PGND GND

0.001

0.01

0.1

(A)

OUT

FIGURE 1. TYPICAL APPLICATION

FIGURE 2. EFFICIENCY vs LOAD CURRENT, V = 3.3V

OUT

FN8680 Rev 1.00

Jul 12, 2018

Page 1 of 14

12 3 4 5 6 7...14

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