Datasheet
AD8280
Rev. C | Page 6 of 24
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
3
V
BOT2S
4
V
BOT1S
7
VIN1
6
VIN0
5
VBOT1
1
2
VBOT2
8
VIN2
9
VIN3
10
VIN4
12
VIN6
VTOP
11
VIN5
GND1
GND2
DGT0
ALRMSEL
NPTC
VCC
DGT1
SEL0
SEL1
AVOUTUV
AVOUTOT
AVOUTOV
36
35
34
33
31
30
29
28
27
26
25
32
1413 15 16 17 18 19 20 21 22 23 24
VTOPS
VT1
VT2
TESTI
AIOUTOV
AIOUTUV
AIOUTOT
ENBI
OV
UV
DGT2
OT
TOP
BOT
TESTO
AIINOV
AIINUV
AIINOT
ENBO
REF
FB
LDOS
VCCS
LDO
48
47
46 45 44 43
42
41 40
39
38
37
PIN 1
AD8280
08911-002
Figure 2. Pin Configuration
Table 4. Pin Function Descriptions
Pin No. Mnemonic Description
1 VBOT2 Lowest Potential of Six-Cell Stack.
2 VBOT2S Lowest Potential of Six-Cell Stack. Tie to VBOT2.
3 VBOT1S Lowest Potential of Six-Cell Stack. Tie to VBOT1.
4 VBOT1 Lowest Potential of Six-Cell Stack.
5 VIN0 Input Voltage for Bottom of Cell 1.
6 VIN1 Input Voltage for Bottom of Cell 2/Top of Cell 1.
7 VIN2 Input Voltage for Bottom of Cell 3/Top of Cell 2.
8 VIN3 Input Voltage for Bottom of Cell 4/Top of Cell 3.
9 VIN4 Input Voltage for Bottom of Cell 5/Top of Cell 4.
10 VIN5 Input Voltage for Bottom of Cell 6/Top of Cell 5.
11 VIN6 Input Voltage for Top of Cell 6.
12 VTOP Highest Potential of Six-Cell Stack.
13 VTOPS Highest Potential of Six-Cell Stack. Tie to VTOP.
14 VT1 Temperature Input 1.
15 VT2 Temperature Input 2.
16 TESTI Test Input.
17 AIOUTOV Alarm Current Output, Overvoltage. Used in daisy-chain configuration.
18 AIOUTUV Alarm Current Output, Undervoltage. Used in daisy-chain configuration.
19 AIOUTOT Alarm Current Output, Overtemperature. Used in daisy-chain configuration.
20 ENBI Enable Input. When ENBI is logic high, the part is enabled; when ENBI is logic low, the part is disabled.
21 OV Overvoltage Trip Point.
22 UV Undervoltage Trip Point.
23 OT Overtemperature Trip Point.
24 DGT2 Digital Select Pin 2. Used with DGT0 and DGT1 to select deglitch time (see Table 7).
25 AVOUTOT Alarm Voltage Output, Overtemperature.
26 AVOUTUV Alarm Voltage Output, Undervoltage.
27 AVOUTOV Alarm Voltage Output, Overvoltage.