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MAX17035

Description
High-Frequency, Low-Cost SMBus Chargers
File Size1MB,28 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Download Datasheet Compare View All

MAX17035 Overview

High-Frequency, Low-Cost SMBus Chargers

19-4817; Rev 1; 9/10
TION KIT
EVALUA
LE
AVAILAB
High-Frequency,
Low-Cost SMBus Chargers
Features
S
S
S
S
Low-Cost SMBus Charger
High Switching Frequency (0.85MHz/0.5MHz)
Internal Boost Switches
SMBus-Programmable Charge Voltage, Input
Current Limit, Charge Current, Relearn Voltage,
and Digital IINP Readback
Single-Point Compensation
Automatic Selection of System Power Source
Adapter n-Channel MOSFETs Driven by an
Internal Dedicated Charge Pump
Adapter Soft-Start
±0.4% Accurate Charge Voltage
±2.5% Accurate Input Current Limiting
±3% Accurate Charge Current
Monitor Outputs for
AC Adapter Current (±2% Accuracy)
Battery Discharge Current (±2% Accuracy)
AC Adapter Presence
AC Adapter Overvoltage Protection
11-Bit Battery Voltage Setting
6-Bit, Charge-Current Setting/Input Current Setting
Improved IINP Accuracy at Low Input Current
General Description
The MAX17435/MAX17535 integrated multichemistry
battery-charger ICs simplify construction of accurate
and efficient chargers. The MAX17435/MAX17535
provide SMBusK-programmable charge current, charge
voltage, input current limit, relearn voltage, and digital
readback of the IINP voltage. The MAX17435/MAX17535
utilize a charge pump to control the adapter selection
n-channel MOSFETs when the adapter is present. When
the adapter is absent, the charge pump is shut down and
a p-channel MOSFET selects the battery.
The MAX17435/MAX17535 provide up to 7A of charge
current to 2, 3, or 4 lithium-ion (Li+) cells in series. The
charge current, and input current-limit sense amplifiers have
low offset errors and can use 10mI sense resistors. The
MAX17435/MAX17535 fixed-inductor ripple architecture
significantly reduces component size and circuit cost.
The MAX17435/MAX17535 provide a digital output that
indicates the presence of the adapter, an analog output
that indicates the adapter or battery current, depending
upon the presence or absence of the adapter, and a
digital output that indicates when the adapter current
exceeds a user-defined threshold.
The MAX17435 switches at an 850kHz frequency and the
MAX17535 switches at 500kHz.
The MAX17435/MAX17535 are available in a small, 4mm
x 4mm x 0.75mm, 24-pin, lead-free TQFN package. An
evaluation kit is available.
MAX17435/MAX17535
S
S
S
S
S
S
S
S
S
S
Ordering Information
PART
MAX17435ETG+
MAX17535ETG+
TEMP RANGE
-40
N
C
to
+85
N
C
-40
N
C to +85
N
C
PIN-PACKAGE
24 TQFN-EP*
24 TQFN-EP*
Applications
Notebook Computers
PDAs and Mobile Communicators
2- to 4- Li+ Cell Battery-Powered Devices
+Denotes
a lead(Pb)-free/RoHS-compliant package.
*EP
= Exposed pad.
Pin Configuration
CSSP
CSSN
TOP VIEW
IINP
CC
PDSL
14
18
ACIN 19
ITHR 20
V
AA
21
V
CC
22
GND 23
EN 24
1
SCL
17
16
15
13
12 CSIP
11 CSIN
10 ACOK
MAX17435
MAX17535
BATT
9
8
7
DHI
LX
BST
2
SDA
3
DCIN
4
LDO
5
DLO
6
ADAPTLIM
SMBus is a trademark of Intel Corp.
_______________________________________________________________
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.

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MAX17035 MAX17435 MAX17535 MAX17535ETG+ MAX17435ETG+
Description High-Frequency, Low-Cost SMBus Chargers High-Frequency, Low-Cost SMBus Chargers High-Frequency, Low-Cost SMBus Chargers High-Frequency, Low-Cost SMBus Chargers High-Frequency, Low-Cost SMBus Chargers
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