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MAX77278EWB+

产品描述专业电源管理 (PMIC)
产品类别半导体    电源管理 IC    专业电源管理 (PMIC)   
文件大小2MB,共70页
制造商Maxim(美信半导体)
官网地址https://www.maximintegrated.com/en.html
标准
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MAX77278EWB+概述

专业电源管理 (PMIC)

MAX77278EWB+规格参数

参数名称属性值
厂商名称Maxim(美信半导体)
产品种类专业电源管理 (PMIC)
输出电压范围0.8 V to 5.5 V
输出电流425 mA
输入电压范围2.7 V to 5.5 V
最小工作温度- 40 C
最大工作温度+ 85 C
安装风格SMD/SMT
封装 / 箱体WLP-35
类型Ultra-Low Power
产品PMICs
系列MAX77278
开发套件MAX77278EVKIT#
工作电源电流48 uA
工作电源电压2.7 V to 5.5 V
Pd-功率耗散1632 mW
工厂包装数量10

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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
Benefits and Features
General Description
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).
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
useful battery charging signals. A bidirectional I
2
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.
Highly Integrated
• 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
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
Flexible and Configurable
• I
2
C-Compatible Interface
• Eight GPIOs
• Factory OTP Options Available
Small Size
• 3.15mm x 2.15mm x 0.7mm
35-Bump, 0.4mm-Pitch, 7x5 Ball Array, WLP
• Small Total Solution Size (24mm
2
)
Simplified Application Circuit
V
BUS
+
CHGIN
BATT
GND
TBIAS
THM
1.5µH
IN_SBB
SYS
V
SYS
IN_LDO
SBB0
SBB1
SBB2
PGND
SYSTEM
RESOURCES
LXA
LXB
BST
Applications
SYS
CS
LDO
Remote Controls, Game Pads, Media Center
Controllers
● Wearables, Fitness and Health Monitors
V
IO
/POWER
CS_EN
SDA
SCL
nRST
nIRQ
AMUX
*
* PROCESSOR
*
*
ADC INPUT
MAX77278
V
IO
CS_EN
SDA
SDL
nRST
nIRQ
AMUX
CS_GND
nEN
* GPIO0
* GPIO7
...
Smart Home Automation Pads, Thermostats, Battery-
Powered User Interfaces
Internet of Things (IoT) Gadgets
Ordering Information
appears at end of data sheet.
Smart Power Selector is a trademark of Maxim Integrated
Products, Inc.
*PULLUP RESISTORS NOT DRAWN
19-100167; Rev 3; 11/18

 
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