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MAX14690HEWX+T

Description
Battery ManagementWearable Charge Management Solution
Categorysemiconductor    Power management IC    Battery management   
File Size691KB,48 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Environmental Compliance
Download Datasheet Parametric Compare View All

MAX14690HEWX+T Overview

Battery ManagementWearable Charge Management Solution

MAX14690HEWX+T Parametric

Parameter NameAttribute value
MakerMaxim
Product Categorybattery management
productCharge Management
Battery TypeLi+
The output voltage0.8 V to 1.8 V, 1.5 V to 3.3 V
Output current200 mA
Working power voltage2.7 V to 5.5 V
Working power current900 nA
Minimum operating temperature- 40 C
Maximum operating temperature+ 85 C
Package/boxWLP-36
EncapsulationCut Tape
EncapsulationMouseReel
EncapsulationReel
Installation styleSMD/SMT
Pd-power dissipation1.74 W
Factory packaging quantity2500
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MAX14690
PMIC with Ultra-Low I
Q
Voltage Regulators and
Battery Charger for Small Lithium Ion Systems
General Description
The MAX14690 is a battery-charge-management solution
ideal for low-power wearable applications. The device
includes a linear battery charger with a smart power
selector and several power-optimized peripherals. The
MAX14690 features two ultra-low-power buck regulators
with a typical quiescent current of 900nA. In addition,
three ultra-low power low-dropout (LDO) linear regulators,
with a typical quiescent current of 600nA are included.
In total, the MAX14690 can provide up to five regulated
voltages, each with an ultra-low quiescent current,
critical to battery life for the unique power profile in 24/7
operation devices, such as those in the wearable market.
The battery charger features a smart power selector that
allows operation on a dead battery when connected to a
power source. To avoid overloading a power adapter, the
input current to the smart power selector is limited based
on an I
2
C register setting. If the charger power source
is unable to supply the entire system load, the smart
power control circuit supplements the system load with
current from the battery.
The two synchronous, high-efficiency step-down buck
regulators feature a fixed-frequency PWM mode for
tighter regulation and a burst mode for increased
efficiency during light-load operation. The output voltage
of these regulators can be programmed through I
2
C with
the default preconfigured.
The three configurable LDOs each have a dedicated
input pin. Each LDO regulator output voltage can be
programmed through I
2
C with the default preconfigured.
The linear regulators can also be configured to operate
as power switches that may be used to disconnect the
quiescent load of the system peripherals.
The MAX14690 features a programmable power controller
that allows the device to be configured for applications
that require the device be in a true-off, or always-on,
state. The controller also provides a delayed reset signal
and voltage sequencing.
The MAX14690 is available in a 36-bump, 0.4mm pitch,
2.72mm x 2.47mm wafer-level package (WLP).
Benefits and Features
Extend System Use Time Between Battery Charging
• Dual Ultra-Low-I
Q
200mA Buck Regulators
• Output Programmable from 0.8V to 1.8V and
1.5V to 3.3V
0.9μA (typ) Quiescent Current
• Automatic Burst or Forced-PWM Modes
• Three Ultra-Low-I
Q
100mA LDOs
• Output Programmable from 0.8V to 3.6V
0.6μA (typ) Quiescent Current
• 2.7V to 5.5V Input with Dedicated Pin
Easy-to-Implement Li+ Battery Charging
• Smart Power Selector
• 28V/-5.5V Tolerant Input
• Thermistor Monitor
Minimize Solution Footprint Through High Integration
• Provides Five Regulated Voltage Rails
• Switch Mode Option on Each LDO
Optimize System Control
• Monitors Pushbutton for Ultra-Low Power Mode
• Power-On Reset Delay and Voltage Sequencing
• On-Chip Voltage Monitor Multiplexer
Applications
Wearable Electronics
Fitness Monitors
Portable Medical Devices
Block Diagram
MAX14690
28V INPUT
PROTECTION
LINEAR
Li+ BATTERY CHARGER
WITH POWER SELECTOR
POWER
POWER
SEQUENCER
MONITOR
BUCK 1
BUCK 2
LDO/SWITCH 1
DATA
CONTROL
LDO/SWITCH 2
SYS
LDO/SWITCH 3
Ordering Information
appears at end of data sheet.
19-7480; Rev 12; 5/18

MAX14690HEWX+T Related Products

MAX14690HEWX+T MAX14690IEWX+T MAX14690DEWX+T
Description Battery ManagementWearable Charge Management Solution Battery ManagementWearable Charge Management Solution Battery ManagementWearable Charge Management Solution
Maker Maxim Maxim Maxim
Product Category battery management battery management battery management
product Charge Management Charge Management Charge Management
Battery Type Li+ Li+ Li+
The output voltage 0.8 V to 1.8 V, 1.5 V to 3.3 V 0.8 V to 1.8 V, 1.5 V to 3.3 V 0.8 V to 1.8 V, 1.5 V to 3.3 V
Output current 200 mA 200 mA 200 mA
Working power voltage 2.7 V to 5.5 V 2.7 V to 5.5 V 2.7 V to 5.5 V
Working power current 900 nA 900 nA 900 nA
Minimum operating temperature - 40 C - 40 C - 40 C
Maximum operating temperature + 85 C + 85 C + 85 C
Package/box WLP-36 WLP-36 WLP-36
Installation style SMD/SMT SMD/SMT SMD/SMT
Pd-power dissipation 1.74 W 1.74 W 1.74 W
Factory packaging quantity 2500 2500 2500
Encapsulation Reel Reel Reel

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