MAX8662_08 Datasheet, PDF (1/37 Pages) Maxim Integrated Products – Power-Management ICs for Single-Cell, Li+ Battery-Operated Devices

19-0732; Rev 1; 12/08
EVAALVUAAILTAIOBNLEKIT
Power-Management ICs for
Single-Cell, Li+ Battery-Operated Devices
General Description
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.
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.
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.
Applications
Smart Phones and PDAs
MP3 and Portable Media Players
Palmtop and Wireless Handhelds
Pin Configurations
Features
♦ _{Two 95%-Efficient 1MHz Buck Regulators}
Main Regulator: 0.98V to V_IN at 1200mA
Core Regulator: 0.98V to V_IN at 900mA
♦ _{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
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
MAX8662ETM+ -40°C to +85°C ^{48 Thin QFN-EP*}
6mm x 6mm x 0.8mm
MAX8663ETL+
-40°C to +85°C ^{40 Thin QFN-EP*}
5mm x 5mm x 0.8mm
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Typical Operating Circuit
TOP VIEW
36 35 34 33 32 31 30 29 28 27 26 25
EN6 37
EN7 38
LX3 39
PG3 40
OUT6 41
IN67 42
OUT7 43
VL 44
SL1 45
SL2 46
PSET 47
POK 48
MAX8662
24 FB1
23 PWM
22 EN5
21 EN4
20 OUT5
19 IN45
18 OUT4
17 GND
16 REF
15 CT
14 ISET
13 THM
1 2 3 4 5 6 7 8 9 10 11 12
DC/USB
INPUT
PWR OK
CHARGE
STATUS
CHARGE
ENABLE
OUT4–OUT7
VOLTAGE
SELECT
DC
SYS
BAT
POK
CHG _MAX8662
MAX8663 LX1
CEN
LX2
EN1
LX3
EN2
EN3
(MAX8662 ONLY)
EN4
EN5
CS
EN6
OUT4
EN7
OUT5
SL1
OUT6
SL2
OUT7
TO SYSTEM
POWER
Li+
BATTERY
OUT1
0.98V TO V_IN / 1.2A
OUT2
0.98V TO V_IN / 0.9A
TO SYS
OUT3
30mA
WLED
500mA
150mA
300mA
150mA
THIN QFN
(6mm x 6mm)
Pin Configurations continued at end of data sheet.
Smart Power Selector is a trademark of Maxim Integrated
Products, Inc.
________________________________________________________________ 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.