MAX14676EWOT [MAXIM]
Wearable Charge Management Solution;
| 型号： | MAX14676EWOT |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Wearable Charge Management Solution |
| 文件： | 总3页 (文件大小：304K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ABRIDGED DATA SHEET
EVALUATION KIT AVAILABLE
MAX14676/MAX14676A
Wearable Charge Management Solution
General Description
Benefits and Features
The MAX14676/MAX14676A are battery-charge-
management solutions ideal for low-power wearable
applications. These devices include a linear battery-
charger with a Smart Power Selector™, ModelGauge™
fuel gauge, and several power-optimized peripherals.
They feature an ultra-low-power buck regulator with a
quiescent current of 900nA (typical) and 74% efficiency
with 10µA output.
● Extend System Use Time Between Battery Charging
• 1.8V Low-I 200mA Buck Regulator
Q
• - 0.9μA (typ) Quiescent Current
• - Automatic Burst or Forced-PWM Modes
• ModelGauge with Accurate State-of-Charge
● Easy-to-Implement Li+ Battery Charging
• Smart Power Selector
• 28V Tolerant Input
The battery charger features Smart Power Selector
operation, allowing operation with dead battery. It limits
input current based on a register setting. If the charger
power source is unable to supply the entire system load,
the smart power control circuit will supplement the system
load with current from the battery.
• Thermistor Monitor
● Minimize Power-Management Footprint though High
Integration
• 3.2V Low-I 100mA LDO
Q
• 2.0V Always-On 50μA LDO
The MAX14676/MAX14676A embed a Maxim proprietary
ModelGauge fuel gauge to provide an accurate estimate
of the available capacity for rechargeable lithium batteries.
• +5V Safe Output LDO
• 6.6V Low-I 120μA Charge Pump
Q
● Support a Wide Variety of Display Options
• 5V to 17V Output Boost Converter
The MAX14676/MAX14676A include a synchronous high-
efficiency step-down converter. The device features a fixed-
frequency PWM mode for tighter regulation, and a burst
mode for increased efficiency during light-load operation.
• 3-Channel Adjustable High-Voltage Current Sinks
● Optimize System Control
• Pushbutton to Enable Ultra-Low-Power Mode and
Power-On Voltage Sequencing
The MAX14676/MAX14676A have a boost regulator and
three programmable current sinks that can be used to
drive a variety of LED configurations. The boost converter
is controlled independently from the current sinks, and
they can be also used separately.
2
• I C Control
Applications
● Wearable Electronics
● GPS Watches
● Fitness Monitors
● Portable Medical Devices
The MAX14676/MAX14676A feature a power switch con-
troller that allows the device to be turned on and off by a
pushbutton. This controller also provides a delayed reset
signal and voltage sequencing.
These devices are available in a 42-bump, 0.5mm pitch,
3.497mm x 3.118mm wafer-level package (WLP).
Ordering Information/Selector Guide appears at end of
data sheet.
Smart Power Selector and ModelGauge are trademarks of
Maxim Integrated Products, Inc.
19-6856; Rev 3; 5/17
ABRIDGED DATA SHEET
MAX14676/MAX14676A
Wearable Charge Management Solution
Typical Application Circuit
VIO
+2.0V
VIO
MAX14676/MAX14676A
ALRT
RST
KOUT
KIN
RST
KEY
ALRT
CTG
FUEL GAUGE
POWER SWITCH
QSTRT
CELL
0.1µF
AOLDO
0.1µF
CAP
THM
BAT
GND
NVP
CHGIN
Li+ BATTERY CHARGER WITH
SMART POWER SELECTOR
1
1µF
GND
1µF
1µF
+5V
VSYS
SFOUT
SYS
5V LDO
1µF
VIO
10µF
10µF
+1.8V
BOUT
BLX
1.8V BUCK
2.2µH
+3.2V
SCL
SDA
INT
MPC0
MPC1
SCL
SDA
INT
MPC0
MPC1
LOUT
3.2V
LDO
15µF
1µF
+6.6V
CONTROL
CPOUT
CPP
6.6V
CHARGE PUMP
CPN
27nF
VSYS
VSYS
LED0
HVLX
HVOUT
HVCAP
+12V
+12V
3.3µH
LED1
CURRENT
SINKS
BOOST
LED2
4.7µF
4.7µF
GND
BUZZER
NOTE 1: OPTIONAL FOR REVERSE VOLTAGE PROTECTION
Maxim Integrated
│ 2
www.maximintegrated.com
ABRIDGED DATA SHEET
MAX14676/MAX14676A
Wearable Charge Management Solution
Ordering Information/Selector Guide
PART
BUCK
3.2V LDO
Forced On
Off (default)
STAY ON BIT DEFAULT*
BUMP-PACKAGE
42 WLP
MAX14676EWO+T
MAX14676AEWO+T
Forced On
Forced On
0
1
42 WLP
+ Denotes lead(Pb)-free/RoHS compliant package.
T = Tape and reel.
*See Table 29 for the StayOn bit default settings.
Chip Information
PROCESS: BiCMOS
Maxim Integrated
│ 49
www.maximintegrated.com
相关型号：
MAX14680EWC+
Analog Circuit, 1 Func, BICMOS, PBGA12, 1.30 X 1.70 MM, 0.40 MM PITCH, ROHS COMPLIANT, WLP-12
MAXIM
MAX14680EWC+T
Analog Circuit, 1 Func, BICMOS, PBGA12, 1.3 X 1.7 MM, 0.4 MM PITCH, ROHS COMPLIANT, WLP-12
MAXIM
©2020 ICPDF网 联系我们和版权申明