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參數資料
| 型號： | TPS40200MDREPG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | GREEN, PLASTIC, MS-012AA, SOIC-8 |
| 文件頁數： | 39/43頁 |
| 文件大小： | 1069K |
| 代理商： | TPS40200MDREPG4 |
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TYPICAL CHARACTERISTICS
-50
-25
0
25
50
75
100
125
Temperature-°C
1.56
1.57
1.58
1.59
1.6
1.61
1.62
1.63
1.64
1.65
1.66
I
-mA
D
V
=12V
DD
5
10
15
20
25
30
35
40
45
50
55
V
-V
DD
0
0.5
1
1.5
2
2.5
3
I
-mA
D
-50
-25
0
25
50
75
100
125
Temperature-°C
4
4.05
4.1
4.15
4.2
4.25
4.3
UVLOT
urnon-V
Turnoff
Turnon
-50
-25
0
25
50
75
100
125
Temperature-°C
153.5
154
154.5
155
155.5
156
156.5
ResetThreshold-mV
V
=12V
DD
SGLS371 – JANUARY 2007
DEVICE INFORMATION (continued)
TERMINAL FUNCTIONS
TERMINAL
I/O
DESCRIPTION
NAME
NO.
Switching frequency-setting RC network. Connect capacitor from RC pin to GND pin and resistor from VIN
RC
1
I
pin to RC pin. The device may be synchronized to an external clock by connecting an open-drain output to
this pin and pulling it to GND. The pulse width for synchronization should not be excessive.
Soft-start programming pin. Connect capacitor from SS to GND to program soft-start time. Pulling this pin
SS
2
I
below 150 mV causes the output switching to stop, placing the device in a shutdown state. The pin also
functions as a restart timer for overcurrent events.
COMP
3
O
Compensation. Error amplifier output. Connect control-loop compensation network from COMP to FB.
FB
4
I
Feedback. Error amplifier inverting input. Connect feedback resistor network center tap to this pin.
GND
5
Device ground
GDRV
6
O
Driver output for external P-channel MOSFET
Current-sense comparator input. Connect a current sense resistor between ISNS and VDD in order to set
ISNS
7
I
desired overcurrent threshold.
VDD
8
I
System input voltage. Connect local bypass capacitor from VDD to GND.
QUIESCENT CURRENT vs TEMPERATURE
QUIESCENT CURRENT vs VDD
Figure 3.
Figure 4.
SOFT-START THRESHOLD vs TEMPERATURE
UVLO TURNON AND TURNOFF vs TEMPERATURE
Figure 5.
Figure 6.
5
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