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MAX8662 Datasheet

  • MAX8662

  • Power-Management ICs for Single-Cell, Li+ Battery-Operated D...

  • 1347.90KB

  • maxim   maxim

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19-0732; Rev 0; 2/07
IT
TION K
VALUA
E
BLE
AVAILA
Power-Management ICs for
Single-Cell, Li+ Battery-Operated Devices
General Description
Features
o
Two 95%-Efficient 1MHz Buck Regulators
Main Regulator: 0.98V to V
IN
at 1200mA
Core Regulator: 0.98V to V
IN
at 900mA
o
1MHz Boost WLED Driver
Drives Up to 7 White LEDs at 30mA (max)
PWM and Analog Dimming Control
o
Four Low-Dropout Linear Regulators
1.7V to 5.5V Input Range
15碌A(chǔ) Quiescent Current
o
Single-Cell Li+ Charger
Adapter or USB Input
Thermal-Overload Protection
o
Smart Power Selector (SPS)
AC Adapter/USB or Battery Source
Charger-Current and System-Load Sharing
MAX8662/MAX8663
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鈥檚 Smart Power Selector鈩?(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.
Ordering Information
PART
MAX8662ETM+
MAX8663ETL+
TEMP
RANGE
-40擄C to
+85擄C
-40擄C to
+85擄C
PIN-PACKAGE
PKG
CODE
48 Thin QFN-EP*
T4866-1
6mm x 6mm x 0.8mm
40 Thin QFN-EP*
T4055-1
5mm x 5mm x 0.8mm
Applications
Smart Phones and PDAs
MP3 and Portable Media Players
Palmtop and Wireless Handhelds
+Denotes
a lead-free package.
*EP
= Exposed paddle.
Pin Configurations
CC3
OVP
PG2
PG1
EN2
PV2
PV1
EN1
LX2
FB2
LX1
CS
Typical Operating Circuit
DC/USB
INPUT
PWR OK
DC
POK
CHG
CEN
EN1
EN2
EN3
(MAX8662 ONLY)
EN4
EN5
EN6
OUT4
EN7
OUT4鈥揙UT7
VOLTAGE
SELECT
SL1
SL2
OUT5
OUT6
OUT7
500mA
150mA
300mA
150mA
CS
LX2
LX3
SYS
BAT
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
TOP VIEW
36 35 34 33 32 31 30 29 28 27 26 25
EN6
EN7
LX3
PG3
OUT6
IN67
OUT7
VL
SL1
SL2
PSET
POK
37
38
39
40
41
42
43
44
45
46
47
48
1
PEN1
2
PEN2
3
EN3
4
DC1
5
DC2
6
SYS1
7
SYS2
8
BAT1
9
BAT2
10 11 12
CHG
CEN
BRT
24
23
22
21
20
19
FB1
PWM
EN5
EN4
OUT5
IN45
OUT4
GND
REF
CT
ISET
THM
CHARGE
STATUS
CHARGE
ENABLE
MAX8662
MAX8663
LX1
MAX8662
18
17
16
15
14
13
THIN QFN
(6mm x 6mm)
Pin Configurations continued at end of data sheet.
Smart Power Selector is a trademark of Maxim Integrated
Products, Inc.
1
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.

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