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MAX1508

Description
Linear Li Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOKin 3mm x 3mm TDFN
File Size160KB,11 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX1508 Overview

Linear Li Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOKin 3mm x 3mm TDFN

19-2890; Rev 1; 10/03
KIT
ATION
EVALU
E
BL
AVAILA
Linear Li+ Battery Charger with Integrated Pass FET,
Thermal Regulation, and
ACOK
in 3mm x 3mm TDFN
General Description
The MAX1508 is an intelligent, stand-alone constant-cur-
rent, constant-voltage (CCCV), thermally regulated linear
charger for a single-cell lithium-ion (Li+) battery. The
MAX1508 integrates the current-sense circuit, MOS pass
element, and thermal-regulation circuitry, and also elimi-
nates the reverse-blocking Schottky diode, to create the
simplest and smallest charging solution for hand-held
equipment.
The MAX1508 functions as a stand-alone charger to
control the charging sequence from the prequalification
state through fast-charge, top-off charge, and full-
charge indication. The MAX1508Y and MAX1508Z elimi-
nate the prequalification state to allow startup into a load
without a battery.
Proprietary thermal-regulation circuitry limits the die
temperature to +100°C when fast charging or while
exposed to high ambient temperatures, allowing maxi-
mum charging current without damaging the IC.
The MAX1508 achieves high flexibility by providing an
adjustable fast-charge current by an external resistor.
Other features include the charging status (CHG) of the
battery, an active-low control input (EN) for the
MAX1508 and MAX1508Z (active-high control input for
the MAX1508Y), and an active-low input power-source
detection output (ACOK).
The MAX1508 accepts a +4.25V to +13V supply, but dis-
ables charging when the input voltage exceeds +7V to
protect against unqualified or faulty AC adapters. The
MAX1508 operates over the extended temperature
range (-40°C to +85°C) and is available in a compact
8-pin thermally enhanced 3mm x 3mm thin DFN pack-
age with 0.8mm height.
Features
o
Stand-Alone Linear 1-Cell Li+ Battery Charger
o
No External FET, Reverse-Blocking Diode, or
Current-Sense Resistor Required
o
Programmable Fast-Charge Current (0.8A max)
o
Proprietary Die-Temperature Regulation Control
(+100°C)
o
+4.25V to +13V Input Voltage Range with Input
Overvoltage Protection (OVP) Above +7V
o
Charge-Current Monitor for Fuel Gauging
o
Low Dropout Voltage—130mV at 0.425A
o
Input Power-Source Detection Output (ACOK)
o
Soft-Start Limits Inrush Current
o
No Prequalification State for the MAX1508Y and
MAX1508Z
o
Charge Status Output (CHG) for LED or
Microprocessor Interface
o
Small 3mm x 3mm 8-Pin Thin DFN Package,
0.8mm High
o
Active-Low Charge Enable (EN) (MAX1508 and
MAX1508Z)
o
Active-High Charge Enable (EN) (MAX1508Y)
MAX1508/MAX1508Y/MAX1508Z
Ordering Information
PART
MAX1508ETA
MAX1508YETA
MAX1508ZETA
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 Thin DFN-EP*
8 Thin DFN-EP*
8 Thin DFN-EP*
TOP
MARK
AHF
AIL
AIK
Applications
Cellular and Cordless Phones
PDAs
Digital Cameras and MP3 Players
USB Appliances
Charging Cradles and Docks
Bluetooth™ Equipment
*EP
= Exposed paddle.
Pin Configuration
CHG
BATT
TOP VIEW
8
7
ACOK
6
Typical Operating Circuit appears at end of data sheet.
1
VL
MAX1508
MAX1508Y
MAX1508Z
2
IN
3
GND
4
ISET
3mm x 3mm THIN DFN
( ) ARE FOR THE MAX1508Y ONLY
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.
EN (EN)
5

MAX1508 Related Products

MAX1508 MAX1508ZETA MAX1508YETA MAX1508ETA
Description Linear Li Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOKin 3mm x 3mm TDFN Linear Li Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOKin 3mm x 3mm TDFN Linear Li Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOKin 3mm x 3mm TDFN Linear Li Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOKin 3mm x 3mm TDFN
Is it lead-free? - Contains lead Contains lead Contains lead
Is it Rohs certified? - incompatible incompatible incompatible
Maker - Maxim Maxim Maxim
Parts packaging code - SON SON SON
package instruction - 3 X 3 MM, 0.80 MM HEIGHT, MO-229, TDFN-8 3 X 3 MM, 0.80 MM HEIGHT, MO-229, TDFN-8 3 X 3 MM, 0.80 MM HEIGHT, MO-229, TDFN-8
Contacts - 8 8 8
Reach Compliance Code - _compli _compli _compli
ECCN code - EAR99 EAR99 EAR99
Factory Lead Time - 1 week 1 week 1 week
Adjustable threshold - NO NO NO
Analog Integrated Circuits - Other Types - POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code - S-XDSO-N8 S-XDSO-N8 S-XDSO-N8
JESD-609 code - e0 e0 e0
length - 3 mm 3 mm 3 mm
Humidity sensitivity level - 1 1 1
Number of channels - 1 1 1
Number of functions - 1 1 1
Number of terminals - 8 8 8
Maximum operating temperature - 85 °C 85 °C 85 °C
Minimum operating temperature - -40 °C -40 °C -40 °C
Package body material - UNSPECIFIED UNSPECIFIED UNSPECIFIED
encapsulated code - VSON VSON VSON
Encapsulate equivalent code - SOLCC8,.12,25 SOLCC8,.12,25 SOLCC8,.12,25
Package shape - SQUARE SQUARE SQUARE
Package form - SMALL OUTLINE, VERY THIN PROFILE SMALL OUTLINE, VERY THIN PROFILE SMALL OUTLINE, VERY THIN PROFILE
Peak Reflow Temperature (Celsius) - 240 240 240
power supply - 5 V 5 V 5 V
Certification status - Not Qualified Not Qualified Not Qualified
Maximum seat height - 0.8 mm 0.8 mm 0.8 mm
Maximum supply current (Isup) - 2 mA 2 mA 2 mA
Maximum supply voltage (Vsup) - 13 V 13 V 13 V
Nominal supply voltage (Vsup) - 5 V 5 V 5 V
surface mount - YES YES YES
technology - BICMOS BICMOS BICMOS
Temperature level - INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal surface - Tin/Lead (Sn85Pb15) Tin/Lead (Sn85Pb15) Tin/Lead (Sn85Pb15)
Terminal form - NO LEAD NO LEAD NO LEAD
Terminal pitch - 0.65 mm 0.65 mm 0.65 mm
Terminal location - DUAL DUAL DUAL
Maximum time at peak reflow temperature - 20 20 20
width - 3 mm 3 mm 3 mm
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