MAX1666VEEP Ver la hoja de datos (PDF) - Maxim Integrated
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MAX1666VEEP Datasheet PDF : 17 Pages
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Advanced Lithium-Ion
Battery-Pack Protector
PIN
MAX1666X MAX1666A/V MAX1666S
1
1
1
2
2
2
NAME
SRC
DSO
3
3
3
TKO
4
4
4
CGO
5
—
—
B4P
6
5, 6
—
B3P
7
7
5
B2P
8
8
6
B1P
9
9
7
GND
10
10
8
PKN
11
11
9
DSI
12
12
10
CGI
13
13
11
PKF
14
14
—
WRN
15
15
12
MMA
16
16
13
UVA
17
17
14
OVA
18
18
15
REF
19
19
16
VCC
20
20
—
UVO
Pin Description
FUNCTION
Charge Source Input. Provides current for gate drivers DSO, TKO,
CGO, and UVO.
Discharge Driver Output. Drives external P-channel MOSFET to con-
trol discharge.
Trickle-Charge Driver Output. Drives external P-channel MOSFET to
control trickle-charge current. MAX1666A requires an external pullup
resistor of 470kΩ
Fast-Charge Driver Output. Drives external P-channel MOSFET to
control fast charge.
Cell 4 Positive Input. Power supply input for MAX1666X.
Cell 3 Positive Input. Power supply input for MAX1666A/V.
Cell 2 Positive Input. Power supply input for MAX1666S.
Cell 1 Positive Input
Ground
Battery Pack Negative Terminal. Connect to bottom of current-sense
resistor. Ground reference for logic inputs DSI and CGI.
Discharge Control Input
Charge Control Input
Pack Fail Output. PKF goes low when any cell voltage exceeds the
mismatch threshold or when a shorted cell is detected.
Undervoltage/Overvoltage Warning Output
Mismatch Adjust Input. Set the mismatch threshold by a resistor-
divider from REF to GND.
Undervoltage Adjust Input. Set the undervoltage threshold with a
resistor-divider from REF to GND.
Overvoltage Adjust Input. Set the overvoltage threshold with a
resistor-divider from REF to GND.
Reference Voltage Output. Minimize PC board stray capacitance on
this node.
3.3V Linear Regulator Output. Bypass with a 0.47µF min capacitor
to GND.
Undervoltage Fault Output
8 _______________________________________________________________________________________
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