Datasheet > MAX77278

MAX77278

更新时间： 2024-09-29 14:58:03

品牌	Logo	应用领域
亚德诺 - ADI		电池集成电源管理电路
页数	文件大小	规格书
69页	2709K
描述
超低功耗PMIC，带有3路输出SIMO、优化用于小型Li+电池的电源路径充电器、425mA流入电流源和8路GPIO

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中文翻译

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数据手册

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MAX77278 数据手册

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MAX77278

Ultra-Low Power PMIC with 3-Output SIMO,

Power Path Charger Optimized for Small Li+, 425mA

Current Sink, and 8 GPIOs

General Description

Beneﬁts and Features

● Highly Integrated

The MAX77278 provides a highly-integrated battery

charging and power supply solution for low-power appli-

cations where size and efficiency are critical. The device

features a single-inductor multiple-output (SIMO) buck-

boost regulator that provides three independently pro-

grammable power rails from a single inductor to minimize

total solution size. A 50mA LDO provides ripple rejection

for audio and other noise-sensitive applications. A highly-

configurable linear charger supports a wide range of Li+

battery capacities and includes battery temperature moni-

toring for additional safety (JEITA).

• Smart Power Selector™ Li+/Li-Poly Charger

• Three Output, SIMO Buck-Boost Regulator

• 50mA LDO with SIMO Fixed Headroom Control

• Programmable 250mA to 425mA Current Sink

Driver

• Analog MUX Output for Power Monitoring

• Eight GPIOs (Conﬁgured for One-Button Wake-Up

and Two-Button Shutdown)

● Low Power

• 0.3μA Standby Current

• 16μA Operating Current

The device includes other features such as a program-

mable current sink that can be used to drive an IR-LED, 8

general-purpose input/output (GPIO) control pins, and an

analog multiplex (AMUX) output that provides access to

● Charger Optimized for Small Battery Size

• Programmable Fast-Charge Current from 7.5mA

to 300mA

• Programmable Battery Regulation Voltage from

3.6V to 4.6V

• Programmable Termination Current from 0.375mA

to 45mA

• JEITA Battery Temperature Monitors Adjust Charge

Current and Battery Regulation Voltage for Safe

Charging

useful battery charging signals. A bidirectional I C inter-

face allows for configuring and checking the status of the

device. An internal on/off controller provides a controlled

startup sequence for the regulators and provides super-

visory functionality when the device is on. Numerous fac-

tory programmable options allow the device to be tailored

for many applications, enabling faster time to market.

● Flexible and Configurable

Simpliﬁed Application Circuit

• I C-Compatible Interface

• Eight GPIOs

• Factory OTP Options Available

IN_SBB

SYS

BUS

CHGIN

BATT

SYS

● Small Size

IN_LDO

SBB0

• 3.15mm x 2.15mm x 0.7mm

• 35-Bump, 0.4mm-Pitch, 7x5 Ball Array, WLP

• Small Total Solution Size (24mm )

GND

TBIAS

THM

SBB1

SYSTEM

RESOURCES

SBB2

1.5µH

Applications

● Remote Controls, Game Pads, Media Center

PGND

LDO

LXA

LXB

BST

Controllers

SYS

● Wearables, Fitness and Health Monitors

MAX77278

● Smart Home Automation Pads, Thermostats, Battery-

CS_GND

V /POWER

Powered User Interfaces

CS_EN

nEN

● Internet of Things (IoT) Gadgets

SDA

SCL

nRST

nIRQ

SDA

SDL

nRST

PROCESSOR

ADC INPUT

GPIO0

GPIO7

nIRQ

Ordering Information appears at end of data sheet.

AMUX

Smart Power Selector is a trademark of Maxim Integrated

Products, Inc.

*PULLUP RESISTORS NOT DRAWN

19-100167; Rev 3; 11/18

12 3 4 5 6 7...69

中文翻译

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