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MAX8662_08

更新时间： 2024-11-25 11:14:35
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美信 - MAXIM 电池
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37页 899K
描述
Power-Management ICs for Single-Cell, Li+ Battery-Operated Devices

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MAX8662_08 数据手册

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19-0732; Rev 1; 12/08  
Power-Management ICs for  
Single-Cell, Li+ Battery-Operated Devices  
2/MAX863  
General Description  
Features  
♦
♦
♦
♦
♦
The MAX8662/MAX8663 power-management ICs  
(PMICs) are efficient, compact devices suitable for  
smart cellular phones, PDAs, Internet appliances, and  
other portable devices. They integrate two synchronous  
buck regulators, a boost regulator driving two to seven  
white LEDs, four low-dropout linear regulators (LDOs),  
and a linear charger for a single-cell Li-ion (Li+) battery.  
Two 95%-Efficient 1MHz Buck Regulators  
Main Regulator: 0.98V to V at 1200mA  
IN  
Core Regulator: 0.98V to V at 900mA  
IN  
1MHz Boost WLED Driver  
Drives Up to 7 White LEDs at 30mA (max)  
PWM and Analog Dimming Control  
Four Low-Dropout Linear Regulators  
1.7V to 5.5V Input Range  
Maxim’s Smart Power Selector™ (SPS) safely distrib-  
utes power between an external power source (AC  
adapter, auto adapter, or USB source), battery, and the  
system load. When system load peaks exceed the  
external source capability, the battery supplies supple-  
mental current. When system load requirements are  
small, residual power from the external power source  
charges the battery. A thermal-limiting circuit limits bat-  
tery-charge rate and external power-source current to  
prevent overheating. The PMIC also allows the system  
to operate with no battery or a discharged battery.  
15µA Quiescent Current  
Single-Cell Li+ Charger  
Adapter or USB Input  
Thermal-Overload Protection  
Smart Power Selector (SPS)  
AC Adapter/USB or Battery Source  
Charger-Current and System-Load Sharing  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
The MAX8662 is available in a 6mm x 6mm, 48-pin thin  
QFN package, while the MAX8663, without the LED driver,  
is available in a 5mm x 5mm, 40-pin thin QFN package.  
48 Thin QFN-EP*  
6mm x 6mm x 0.8mm  
MAX8662ETM+  
MAX8663ETL+  
-40°C to +85°C  
40 Thin QFN-EP*  
5mm x 5mm x 0.8mm  
-40°C to +85°C  
Applications  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
*EP = Exposed pad.  
Smart Phones and PDAs  
MP3 and Portable Media Players  
Palmtop and Wireless Handhelds  
Pin Configurations  
Typical Operating Circuit  
TOP VIEW  
DC/USB  
INPUT  
TO SYSTEM  
POWER  
DC  
SYS  
BAT  
35 34 33 32 31 30 29 28 27  
36  
26  
25  
Li+  
BATTERY  
PWR OK  
POK  
CHG  
FB1  
EN6  
EN7  
LX3  
24  
23  
22  
37  
38  
39  
CHARGE  
STATUS  
MAX8662  
PWM  
EN5  
OUT1  
0.98V TO V / 1.2A  
IN  
MAX8663 LX1  
CHARGE  
ENABLE  
CEN  
EN1  
EN2  
OUT2  
0.98V TO V / 0.9A  
IN  
21 EN4  
20 OUT5  
19 IN45  
PG3 40  
LX2  
LX3  
OUT6 41  
TO SYS  
IN67  
42  
43  
MAX8662  
OUT3  
30mA  
WLED  
18  
OUT4  
OUT7  
EN3  
EN4  
EN5  
(MAX8662 ONLY)  
CS  
17 GND  
16 REF  
VL 44  
SL1 45  
CT  
14 ISET  
13  
SL2  
PSET  
POK  
15  
46  
47  
48  
EN6  
EN7  
SL1  
500mA  
150mA  
300mA  
150mA  
OUT4  
OUT5  
OUT6  
OUT7  
THM  
OUT4–OUT7  
VOLTAGE  
2
3
4
5
6
7
8
9
10  
1
11  
12  
SELECT  
SL2  
THIN QFN  
(6mm x 6mm)  
Smart Power Selector is a trademark of Maxim Integrated  
Products, Inc.  
Pin Configurations continued at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
1234567...37

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