MAX1535 Maxim Integrated Products, MAX1535 Datasheet - Page 12

• Manufacturer Part Number: MAX1535
• Description: Highly Integrated Level 2 Smbus Battery Charger
• Manufacturer: Maxim Integrated Products

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Highly Integrated Level 2 SMBus
Battery Charger
12
PIN
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
______________________________________________________________________________________
NAME
VMAX
PGND
ACOK
DLOV
CSSN
DCIN
BATT
CSSP
ACIN
IMAX
CSIN
DHIV
LDO
GND
CCS
CCV
DAC
THM
GND
CSIP
DLO
SDA
SRC
REF
V
SCL
PDL
PDS
CCI
DHI
INT
I.C.
DD
DC Supply Voltage Input. Bypass DCIN to power ground (PGND) with a 1µF ceramic capacitor.
5.4V Li near - Reg ul ator Outp ut. The l i near r eg ul ator p ow er s the i nter nal ci r cui tr y of the d evi ce. The i np ut of the l i near
r eg ul ator i s sup p l i ed fr om D C IN . Byp ass LD O w i th a 1µF cer am i c cap aci tor to GN D .
AC Adapter Detect Input. This uncommitted comparator input can be used to detect if the AC adapter voltage is
available for charging.
4.096V (Typical) Reference Voltage Output. Bypass REF with a 1µF ceramic capacitor to GND.
Analog Ground
Input Current-Limit Regulation Loop Compensation Point. Connect a 0.01µF capacitor to GND.
Charge-Current Regulation Loop Compensation Point. Connect a 0.01µF capacitor to GND.
Charge-Voltage Regulation Loop Compensation Point. Connect a 20kΩ resistor in series with a 0.01µF capacitor
to GND.
Analog Control Input for Setting the Maximum Charge Voltage. The maximum charge voltage can never go above
the limit set by VMAX. The ratio of maximum charge voltage to VMAX voltage is 5V/V.
Analog Control Input for Setting the Maximum Charge Current. The maximum charge current can never go above
the limit set by IMAX. The ratio of maximum charge current to IMAX voltage is 5A/V.
DAC Voltage Output. Bypass DAC with a 0.1µF ceramic capacitor to GND.
Logic Circuitry Supply Voltage Input. The voltage range of V
Thermistor Voltage Input
SMBus Data Input/Output. SDA is an open-drain output. An external pullup resistor is needed.
SMBus Clock Input. An external pullup resistor is needed.
Interrupt Output. INT is an open-drain output. An external pullup resistor is needed.
Internally Connected Pin. Leave it unconnected or connect it to ground.
Analog Ground
Battery Voltage Input
Negative Input to the Charge Current-Sense Amplifier
Positive Input to the Charge Current-Sense Amplifier. Connect a 10mΩ current-sense resistor from CSIP to CSIN.
Power Ground
Low-Side Power MOSFET Gate Driver Output. Connect DLO to the gate of the low-side N-channel MOSFET.
Low-Side Gate Driver Supply. Bypass DLOV with a 0.1µF ceramic capacitor to PGND.
High-Side Gate Driver Supply. Bypass DHIV with a 0.1µF ceramic capacitor to CSSN.
High-Side Power MOSFET Gate Driver Output. Connect DHI to the gate of the high-side P-channel MOSFET.
Source Connection for PDS and PDL Switch Drivers
Negative Input to the Input Current-Limit Sense Amplifier
Positive Input to the Input Current-Limit Sense Amplifier. Connect a 10mΩ current-sense resistor from CSSP to
CSSN.
System Load P-Channel MOSFET Switch Driver Output. When the MAX1535 is powered down, the PDL output is
pulled to ground through an internal 100kΩ resistor.
Power Source P-Channel MOSFET Switch Driver Output. When the MAX1535 is powered down, the PDS output is
pulled to SRC through an internal 1MΩ resistor.
AC Detect Output. This high-voltage open-drain output is low impedance when ACIN is greater than REF/2. The
ACOK output remains high impedance when the MAX1535 is powered down.
FUNCTION
DD
is 2.7V to 5.5V.
Pin Description