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MAX1501

更新时间： 2024-09-14 22:55:27
品牌 Logo 应用领域
美信 - MAXIM 电池便携式
页数 文件大小 规格书
15页 359K
描述
Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications

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MAX1501 数据手册

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19-2800; Rev 0; 4/03  
Highly Integrated, Linear Battery Charger with  
Thermal Regulation for Portable Applications  
General Description  
Features  
o Stand-Alone or Microprocessor-Controlled (µP)  
Linear 1-Cell Li+ or 3-Cell NiMH/NiCd Battery  
Charger  
The MAX1501 intelligent, constant-current, constant-  
voltage (CCCV), temperature-regulated battery charger  
charges a single lithium-ion (Li+) cell or three-cell  
NiMH/NiCd batteries. The device integrates the current-  
sense resistor, PMOS pass element, and thermal-  
regulation circuitry, while eliminating the reverse-  
blocking Schottky diode to create the simplest charging  
solution for hand-held equipment.  
o No FET, Reverse-Blocking Diode, or Current-  
Sense Resistor Required  
o 1.4A (max) Programmable Fast-Charge Current  
o +95°C, +115°C, and +135°C Proprietary  
Programmable Die Temperature Regulation  
Control  
The MAX1501 functions as a stand-alone charger to  
control the charging sequence from the prequalification  
state through fast charge, top-off, and charge termination  
for single-cell Li+ or three-cell NiMH/NiCd batteries.  
Alternatively, the MAX1501 collaborates with a host  
microprocessor to determine the best charging algorithm.  
Proprietary thermal-regulation circuitry limits the die  
temperature when fast charging or while exposed to high  
ambient temperatures, allowing maximum charging  
current without damaging the charger. The MAX1501  
continually supplies a regulated output voltage under  
no-battery conditions, allowing battery changing.  
o 4.5V to 13V Input Voltage Range with Input  
Overvoltage (OVLO) Protection Above 6.5V  
o Programmable Top-Off Current Threshold: 10%,  
20%, or 30% of the Fast-Charge Current  
o Charge-Current Monitor for Fuel Gauging  
o Programmable Safety Timer (3, 4.5, or 6 hours)  
o Input Power Detection Output (ACOK) and Charge  
Enable Input (CHGEN)  
o Automatic Recharge  
The device achieves high flexibility by providing an  
adjustable fast-charge current, top-off current, safety  
timer, and thermal-regulation setpoint. Other features  
include input power detection (ACOK) and input under-/  
overvoltage protection. The MAX1501 provides active-  
low control inputs.  
o Digital Soft-Start Limits Inrush Current  
o Charge Status Outputs for LEDs or µP Interface  
Ordering Information  
The MAX1501 accepts a 4.5V to 13V supply, but  
disables charging when the input voltage exceeds  
6.5V, preventing excessive power dissipation. The  
MAX1501 operates over the extended temperature  
range (-40°C to +85°C) and is available in a compact  
16-pin thermally enhanced 5mm x 5mm thin QFN  
package with 0.8mm profile.  
PART  
TEMP RANGE  
PIN-PACKAGE  
MAX1501ETE  
-40°C to +85°C  
16 Thin QFN  
Typical Operating Circuit  
INPUT  
4.5V TO 13V  
4.2V 1-CELL Li+  
IN  
BATT  
1µF  
10µF  
Applications  
INP  
Cellular and Cordless Phones  
MAX1501  
PDAs  
FULLI  
Digital Cameras and MP3 Players  
USB Appliances  
GLED  
RLED  
TEMP  
VL  
SELV  
V
Charging Cradles and Docks  
Bluetooth™ Equipment  
LOGIC  
MODE  
CHGEN  
(≤ 5.5V)  
TMAX  
SETI  
R
PULLUP  
ACOK  
2.8kΩ  
Pin Configuration appears at end of data sheet.  
GND  
Bluetooth is a trademark of Ericsson.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
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