MAX8713 Datasheet, PDF (1/25 Pages) Maxim Integrated Products – Simplified Multichemistry SMBus Battery Charger

19-3498; Rev 0; 11/04
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Simplified Multichemistry
SMBus Battery Charger
General Description
The MAX8713 multichemistry battery charger simplifies
construction of smart chargers with a minimum number
of external components. It uses the Intel System
Management Bus (SMBus™) to control the charge volt-
age and charge current. High efficiency is achieved
through the use of a constant off-time step-down topol-
ogy with synchronous rectification.
The MAX8713 charges one to four lithium-ion (Li+) cells
in series and delivers over 2A charge current—scalable
with the sense resistor. The MAX8713 drives n-channel
MOSFETs for improved efficiency and reduced cost. A
low-offset charge-current-sense amplifier provides high-
accuracy charge current with small sense resistors.
The MAX8713 is available in a space-saving 24-pin
4mm x 4mm thin QFN package and operates over the
extended (-40°C to +85°C) temperature range. An eval-
uation kit is available to reduce design time.
Applications
Handset Car Kits
Digital Cameras
PDAs and Tablet Computers
Notebook Computers
Portable Equipment with Rechargeable Batteries
Features
♦ Over 2A Charge Current
♦ Intel SMBus 2-Wire Serial Interface
♦ ±0.6% Charge Voltage Accuracy
♦ 11-Bit Charge Voltage Resolution
♦ 6-Bit Charge Current Resolution
♦ Adjustable Switching Frequency
♦ +8V to +28V Input Voltage Range
♦ Cycle-By-Cycle Current Limit
♦ Charges Any Battery Chemistry (Li+, NiCd, NiMH,
Lead Acid, etc.)
♦ Small 24-Pin TQFN
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX8713ETG -40°C to +85°C 24 Thin QFN 4mm x 4mm
Typical Operating Circuit
SMBus is a trademark of Intel Corp.
Pin Configuration
24 23 22 21 20 19
REF 1
IC1 2
CCI 3
CCV 4
DAC 5
V_DD 6
MAX8713
*EXPOSED PADDLE
18 DLOV
17 DLO
16 PGND
15 CSIP
14 IC3
13 CSIN
7 8 9 10 11 12
THIN QFN
(4mm x 4mm)
OPTIONAL
HOST
SCL
SDA
V_DD
DCIN ^DCSNS
DHI
LX
DLO
REF
MAX8713 BST
DAC
CSIP
CSIN
BATT
SCL
SDA
V_DD
DLOV
LDO
FREQ
CCI
GND
PGND
CCV
EXTERNAL
LOAD
N
N
BATTERY
________________________________________________________________ Maxim Integrated Products 1
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