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参数资料
| 型号： | LTC4210-4IS6 |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封装： | PLASTIC, MO-193, TSOT-23, 6 PIN |
| 文件页数： | 13/16页 |
| 文件大小： | 216K |
| 代理商： | LTC4210-4IS6 |
6
LTC4210-3/LTC4210-4
421034fa
VCB vs Supply Voltage
TYPICAL PERFOR A CE CHARACTERISTICS
UW
VCB vs Temperature
UU
U
PI FU CTIO S
TIMER (Pin 1): Timer Input Pin. An external capacitor
CTIMERsets a 272.9ms/F initial timing delay and a 21.7ms/
F circuit breaker delay. The GATE pin turns off whenever
the TIMER pin is pulled beyond the COMP2 threshold,
such as for overvoltage detection with an external zener.
GND (Pin 2): Ground Pin.
ON (Pin 3): ON Input Pin. The ON pin comparator has a
low-to-high threshold of 1.3V with 80mV hysteresis and a
glitch filter. When the ON pin is low, the LTC4210 is reset.
When the ON pin goes high, the GATE turns on after the
initial timing cycle.
GATE (Pin 4): GATE Output Pin. This pin is the high side
gate drive of an external N-channel MOSFET. An internal
charge pump provides a 10
A pull-up current with Zener
clamps to VCC and ground. In overload, the error amplifier
(EA) controls the external MOSFET to maintain a constant
load current. An external R-C compensation network
should be connected to this pin for current limit loop
stability.
SENSE (Pin 5): Current Limit Sense Input Pin. A sense
resistor between the VCC and SENSE pins sets the analog
current limit. In overload, the EA controls the external
MOSFET gate to maintain the SENSE pin voltage at 50mV
below VCC. When the EA is maintaining current limit, the
TIMER circuit breaker mode is activated. The current limit
loop/circuit breaker mode can be disabled by connecting
the SENSE pin to the VCC pin.
VCC (Pin 6): Positive Supply Input Pin. The operating
supply voltage range is between 2.7V to 7V. An undervolt-
age lockout (UVLO) circuit with a glitch filter resets the
LTC4210 when a low supply voltage is detected.
SUPPLY VOLTAGE (V)
2.5
V
CB
(mV)
50
52
54
6.5
LTC4210 G24
48
46
42
3.5
4.5
5.5
3.0
7.0
4.0
5.0
6.0
44
58
56
TA = 25
°C
TEMPERATURE (
°C)
–75
V
CB
(mV)
50
52
54
125
LTC4210 G25
48
46
42
–25
25
75
–50
150
0
50
100
44
58
56
VCC = 5V
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