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參數(shù)資料
| 型號： | BQ20Z80DBT-V101 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO38 |
| 封裝： | GREEN, PLASTIC, TSSOP-38 |
| 文件頁數(shù)： | 12/73頁 |
| 文件大?。?/td> | 1094K |
| 代理商： | BQ20Z80DBT-V101 |
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1
2
7
6
5
4
3
38
37
36
35
34
33
32
VIN
TS1
TS2
PU
PRES
SCLK
VSSD
NC
CLKOUT
XCK1 / VSSA
XCK2 / ROSC
FILT
SAFE
VDDD
VDDA
RBI
SDATA
VSSD
SAFE
SR2
SR1
VSSA
8
9
10
11
12
31
30
29
28
27
13
14
19
18
17
16
15
26
25
24
23
22
21
20
NC
SMBC
SMBD
DISP
PFIN
MRST
XALERT
LED1
LED2
LED3
LED4
LED5
VSSD
NC - No internal connection
bq20z80-V101
SLUS625D – SEPTEMBER 2004 – REVISED OCTOBER 2005
These devices have limited built-in ESD protection. The leads should be shorted together or the device
placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
TSSOP (DBT)
(TOP VIEW)
TERMINAL FUNCTIONS
TERMINAL
I/O(1)
DESCRIPTION
NO.
NAME
1
VIN
I
Voltage measurement input from the AFE
2
TS1
I
1st Thermistor voltage input connection to monitor temperature
3
TS2
I
2nd Thermistor voltage input connection to monitor temperature
4
PU
O
Output to pull up the PRES pin for system detection
5
PRES
I
Active low input to sense system insertion and typically requires additional ESD protection
6
SCLK
I/OD
Communication clock to the AFE
7
SAFE
O
Active high output to enforce additional level of safety protection; e.g., fuse blow. (Inverse of pin 12)
8
VDDD
P
Positive supply for digital circuitry and I/O pins
Backup power to the bq20z80 data registers during periods of low operating voltage. RBI accepts a
9
RBI
P
storage capacitor or a battery input.
10
SDATA
I/O
Data transfer to and from the AFE
12
SAFE
O
Active low output to enforce additional level of safety protection; e.g., fuse blow. (Inverse of pin 7)
13
NC
–
Not used— leave floating
14
NC
–
Not used— leave floating
15
SMBC
I/OD
SMBus clock open-drain bidirectional pin used to clock the data transfer to and from the bq20z80
16
SMBD
I/OD
SMBus data open-drain bidirectional pin used to transfer address and data to and from the bq20z80
Display control for the LEDs. This pin is typically connected to bq29312A REG via a 100-k
resistor
17
DISP
I
and a push-button switch to VSSD.
Active low input to detect secondary protector output status and allows the bq20z80 to report the
18
PFIN
I
status of the 2nd level protection output
20
LED5
O
LED5 display segment that drives an external LED depending on the firmware configuration
21
LED4
O
LED4 display segment that drives an external LED depending on the firmware configuration
(1)
I = Input, IA = Analog input, I/O = Input/output, I/OD = Input/Open-drain output, O = Output, OA = Analog output, P = Power
2
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