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參數(shù)資料
| 型號(hào)： | LTC1422IS8#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Hot Swap Controller; Package: SO; No of Pins: 8; Temperature Range: -40°C to +85°C |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | 0.150 INCH, PLASTIC, SOP-8 |
| 文件頁數(shù)： | 13/16頁 |
| 文件大小： | 193K |
| 代理商： | LTC1422IS8#TRPBF |
6
LTC1422
1422fb
PIN FUNCTIONS
UU
U
GATE (Pin 6): The high side gate drive for the external
N-Channel. An internal charge pump guarantees at least
10V of gate drive when VCC is 5V. The slope of the voltage
rise or fall at the GATE is set by an external capacitor
connected between GATE and GND, and the 10
A charge
pump output current. When the circuit breaker trips, the
undervoltage lockout circuit monitoring VCC trips, or the
ON pin is pulled low for more than 40
s, the GATE pin is
immediately pulled to GND.
SENSE (Pin 7) : Circuit Breaker Set Pin. With a sense
resistor placed in the supply path between VCCand SENSE,
the circuit breaker will trip when the voltage across the
resistor exceeds 50mV for more than 10
s. If the circuit
breaker trip current is set to twice the normal operating
current, only 25mV is dropped across the sense resistor
during normal operation. To disable the circuit breaker,
VCC and SENSE can be shorted together.
VCC (Pin 8): The positive supply input, ranging from 2.7V
to 13.2V for normal operation. ICC is typically 0.6mA. An
undervoltage lockout circuit disables the chip until the
voltage at VCC is greater than 2.47V.
–
+
1.232V
REFERENCE
20
s GLITCH
FILTER
10
s
FILTER
2.47V
UVL
+
–
50mV
8
REF
5
FB
1
RESET
4
GND
COMP 3
VCC
7
SENSE
6
GATE
–
+
COMP 1
REF
–
+
COMP 2
2
A
12
A
–
+
COMP 4
REF
TIMER
1422 BD
3
ON
2
Q1
Q2
LOGIC
CHARGE
PUMP
Q3
BLOCK DIAGRA
W
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