MAX17035(2009) View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX17035 Datasheet PDF : 27 Pages
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High-Frequency,
Low-Cost SMBus Chargers
Q1B
ADAPTER
N3
RS1
Q1A
10mI
SYSTEM LOAD
R9
R9
103kI
2MI
R4
150kI
R17
10I
C6
10nF
R18
1kI
N4
C10
1FF
GND
R10
10kI
ACOK
LDO
R5
10kI
C1
1FF
R16
10I
C3
1FF
R13
10kI
SMBus
CONTROL
C11
R14 1FF
10kI
DCIN PDSL
CSSP
ACIN
ACOK
LDO
VAA
GND
VCC
MAX17035
CSSN
BST
DHI
LX
DLO
PGND PAD
CSIP
CSIN
BATT
CC
IINP
SCL
SDA
ADAPTLIM
ITHR
EN
R12
10kI
LDO
C4
0.1FF
CIN
CIN = 2 x 4.7FF
N1
COUT = 4.7FF
L1 = 2FH
N2
L1
RS2
10mI
C5
0.01FF
C2
0.1FF
COUT
BATTERY
IINP VOLTAGE
LDO
R6
7.06kI
R7
10kI
R8
49.9kI
ADAPTER
CURRENT
LIMIT FLAG
LDO
Figure 1. Standard Application Circuit
Detailed Description
The MAX17035/MAX17435/MAX17535 charger includes
all the functions necessary to charge Li+, NiMH, and
NiCd smart batteries. A high-efficiency synchronous
rectified step-down DC-DC converter is used to
implement a constant-current constant-voltage charger.
The DC-DC converter drives a high-side n-channel
MOSFET and provides synchronous rectification with a
low-side n-channel MOSFET. The charge current and
input current-sense amplifiers have low-input offset
errors (200FV typ), allowing the use of small-valued
sense resistors. The MAX17035/MAX17435/MAX17535
use an SMBus interface similar to the MAX8731A to
set charge current, charge voltage, and input current
limit. In addition, the MAX17035/MAX17435/MAX17535
SMBus interface supports RELEARN(), and IINPVoltage()
readback.
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