MAX1909ETI+ Maxim Integrated Products, MAX1909ETI+ Datasheet - Page 15

• Manufacturer Part Number: MAX1909ETI+
• Description: IC CHARGER BATTERY 28-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX1909ETI+

• Function: Charge Management
• Battery Type: Multi-Chemistry
• Voltage - Supply: 8 V ~ 28 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-WFQFN Exposed Pad
• Product: Charge Management
• Operating Supply Voltage: 8 V to 28 V
• Supply Current: 2.7 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Charge Safety Timers: No
• Mounting Style: SMD/SMT
• Temperature Monitoring: No
• Uvlo Start Threshold: 9.18 V
• Uvlo Stop Threshold: 9.42 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Multichemistry Battery Chargers with Automatic
Figure 2. Smart-Battery Charger Circuit Demonstrating Operation with a Host Microcontroller
OUTPUT VOLTAGE: 16.8V
AC ADAPTER
OPEN-DRAIN
D/A OUTPUT
HOST
A/D INPUT
OUTPUTS
AV
OUTPUT
DD
INPUT
/REF
GND
590kΩ
SDA
SCL
1%
R6
______________________________________________________________________________________
0.1μF
C14
R19, R20
LDO
10kΩ
196kΩ
1%
R8
1MΩ
R7
LDO
D4
R9
10kΩ
R21
10kΩ
C5
1μF
(INPUT I LIMIT: 7.5A)
0.1μF
P3
10kΩ
C11
C15
1μF
R5
0.01μF
REF
C9
LDO
P4
0.1μF
C10
0.01μF
PDS
SRC
DCIN
VCTL
ICTL
MODE
ACIN
ACOK
PKPRES (MAX8725 ONLY)
IINP
CLS
CCV
CCI
CCS
CSSP
MAX1909
MAX8725
0.01Ω
System Power Selector
RS1
REF
C12
1μF
CSSN
PGND
DLOV
DHIV
CSIP
CSIN
BATT
GND
LDO
DLO
PDL
DHI
0.1μF
SRC
C13
1μF
C17
0.1μF
N1
0.015Ω
R13
33Ω
PGND
C16
1μF
P1
RS2
C4
22μF
L1
10μH
GND
SYSTEM LOAD
C1
22μF
TO
BATT +
SCL
SDA
TEMP
BATT -
BATTERY
SMART
P2
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