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| 型號(hào)： | 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(yè)數(shù)： | 23/73頁(yè) |
| 文件大?。?/td> | 1094K |
| 代理商： | BQ20Z80DBT-V101 |
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ABSOLUTE MAXIMUM RATINGS
bq20z80-V101
SLUS625D – SEPTEMBER 2004 – REVISED OCTOBER 2005
TERMINAL FUNCTIONS (continued)
TERMINAL
I/O(1)
DESCRIPTION
NO.
NAME
22
LED3
O
LED3 display segment that drives an external LED depending on the firmware configuration
23
LED2
O
LED2 display segment that drives an external LED depending on the firmware configuration
24
LED1
O
LED1 display segment that drives an external LED depending on the firmware configuration
25
XALERT
I
Input from bq29312A XALERT output.
26
MRST
I
Master reset input that forces the device into reset when held high
27
SR2
IA
Connections for a small-value sense resistor to monitor the battery charge- and discharge-current flow
28
SR1
IA
Connections for a small-value sense resistor to monitor the battery charge- and discharge-current flow
31
VDDA
P
Positive supply for analog circuitry
Analog input connected to the external PLL filter components which are a 150-pF capacitor to VSSA, in
32
FILT
IA
parallel with a 61.9-k
resistor and a 2200-pF capacitor in series. Place these components as close as
possible to the bq20z80 to ensure optimal performance.
32.768-kHz crystal oscillator output pin or connected to a 100k, 50ppm or better resistor if the internal
33
XCK2/ROSC
O
oscillator is used
34
XCK1/VSSA
I
32.768-kHz crystal oscillator input pin or connected to VSSA if the internal oscillator is used
35
CLKOUT
O
32.768-kHz output for the bq29312. This pin should be directly connected to the AFE.
36
NC
-
Not used— leave floating
37
NC
-
Not used— leave floating
11, 19,
VSSD
P
Negative supply for digital circuitry
38
29, 30
VSSA
P
Negative supply for analog circuitry.
over operating free-air temperature range (unless otherwise noted)(1)
RANGE
VDDAand VDDD relative to VSS(2)
Supply voltage range
–0.3 V to 4.1 V
V(IOD) relative to VSS(2)
Open-drain I/O pins
–0.3 V to 6 V
VI relative to VSS(2)
Input voltage range to all other pins
–0.3 V to VDDA + 0.3 V
TA
Operating free-air temperature range
–40
°C to 85°C
Tstg
Storage temperature range
– 65
°C to 150°C
(1)
Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2)
VSS refers to the common node of V(SSA) and V(SSD).
3
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