Datasheet > ISL9238

ISL9238

更新时间： 2023-12-20 18:46:17

品牌	Logo	应用领域
瑞萨 - RENESAS		电池
页数	文件大小	规格书
2页	205K
描述
Buck-Boost Narrow VDC Battery Charger with SMBus Interface and USB OTG

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ISL9238 数据手册

DATA SHORT

To request the full datasheet, visit the ISL9238 product page.

ISL9238

FN8877

Rev.9.00

Jul 19, 2019

Buck-Boost Narrow VDC Battery Charger with SMBus Interface and USB OTG

The ISL9238 is a buck-boost Narrow Output Voltage DC (NVDC)

Features

charger. The ISL9238 provides the NVDC charging, system bus

• Buck-boost NVDC charger for 1-, 2-, 3-, or 4-cell Li-ion batteries

• Input voltage range 3.2V to 23.4V (no dead zone)

• System output voltage 2.4V to 18.304V

regulation and protection features for tablet, Ultrabook,

notebook, power bank, and any USB-C interface platform. The

advanced Renesas R3™ Technology provides high light-load

efficiency and fast transient response.

• Autonomous charging option (automatic end of charging)

• System power monitor PSYS output, IMVP compliant

• Up to 1MHz switching frequency

In Charging mode, the ISL9238 takes input power from a wide

range of DC power sources (such as conventional AC/DC charger

adapters, USB PD ports, and travel adapters) and safely charges

battery packs with up to 4-series cell Li-ion batteries.

• Adapter current and battery current monitor (AMON/BMON)

• PROCHOT# open-drain output, IMVP compliant

• Allows trickle charging of depleted battery

• Ideal diode control in Turbo mode

As a NVDC topology charger, it also regulates the system output to

a narrow DC range for stable system bus voltage. The system

power can be provided from the adapter, battery, or a

combination of both. The ISL9238 can operate with only a

battery, only an adapter, or both connected. For Intel IMVP8

compliant systems the ISL9238 includes System Power monitor

(PSYS) functionality, which provides an analog signal representing

total platform power. The PSYS output connects to a wide range

of IMVP8 core regulators to provide an IMVP8 compliant power

domain function.

• Reverse buck, boost, and buck-boost operation from battery

• Two-level adapter current limit available

• Battery Ship mode option

• SMBus and auto-increment I C compatible

The ISL9238 supports reverse buck, boost, or buck-boost

operation to input port from 2- to 4-cell batteries.

• 4x4 32 Ld TQFN package

The ISL9238 has serial communication using SMBus/I C that

Applications

• 1 to 4-cell tablet, Ultrabook, notebook, power bank, and any

USB-C interface portable device requiring batteries

allows programming of many critical parameters to deliver a

customized solution.

Related Literature

For a full list of related documents, visit our website:

• ISL9238 device page

OPTIONAL

VSYS

VADP

VSYS

CSOP

CSIN

CSIP

ASGATE

CSON

ADP

ACIN

ISL9238

GND

ACOK

BGATE

PROCHOT#

AMON/BMON

VBAT

BATGONE

OTGPG/CMOUT

PSYS

OTGEN/CMIN

FIGURE 1. TYPICAL APPLICATION CIRCUIT

FN8877 Rev.9.00

Jul 19, 2019

Page 1 of 1

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