MAX1870AETJ+ Maxim Integrated Products, MAX1870AETJ+ Datasheet - Page 17

• Manufacturer Part Number: MAX1870AETJ+
• Description: Battery Management Li+ Step Up/Step Down Battery Charger
• Manufacturer: Maxim Integrated Products

Specifications of MAX1870AETJ+

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Figure 3. Functional Diagram
CELLS
CSSN
CSSP
CSSS
VCTL
CSIN
BATT
CSIP
ICTL
CCS
CCV
CLS
CCI
REF
CHARGE-CURRENT BLOCK
A = 18V/V
A = 18V/V
A = 18V/V
AMPLIFIERS
______________________________________________________________________________________
CURRENT-
x
400mV
SENSE
REFIN
x
REFIN
50mV
(6.7A FOR 30mΩ)
+ 4.0V
CSI
4.2V
CSS
SELECT
(42mA ON
LOGIC
CELL-
22.5mV
3.6V
30mΩ)
(6.7A FOR 30mΩ)
GMI
BATTERY-VOLTAGE BLOCK
3.6V
GMS
GMV
IMAX2
IZX
INPUT-CURRENT BLOCK
IMAX1
IMAX1
LVC
5.4V LINEAR
REGULATOR
DCIN
IINP
Gm
0.15V
SHUTDOWN LOGIC
Li+ Battery Charger
CURRENT-MODE
STEP-UP/DOWN
STATE MACHINE
CHG
Step-Up/Step-Down
LVC
RDY
MAX1870A
LDO
ASNS
IMIN
REFERENCE
4.096V
0.81mV
(1.5A FOR 30mΩ)
REF
LEVEL
SHIFT
REFIN
1/55
HIGH-
SIDE
DRIVER
LOW-
SIDE
DRIVER
23% OF
REFIN
ICTL
VHP
DHI
VHN
DLOV
DBST
PGND
SHDN
GND
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