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参数资料
| 型号： | LP2975AIMM-12/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| 封装： | MINI, SOP-8 |
| 文件页数： | 14/20页 |
| 文件大小： | 1135K |
| 代理商： | LP2975AIMM-12/NOPB |
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Storage Temperature Range
65C to +150C
Operating Junction Temperature
Range
40C to +125C
Lead Temp. (Soldering, 5 seconds)
260C
ESD Rating
2 kV
Power Dissipation
Internally Limited
Input Supply Voltage (Survival)
0.3V to +26V
Input Supply Voltage (Operating)
+1.8V to +24V
Current Limit Pins (Survival)
0.3V to +V
IN
Comp Pin (Survival)
0.3V to +2V
Gate Pin (Survival)
0.3V to +V
IN
ON/OFF Pin (Survival)
0.3V to +20V
Feedback Pin (Survival)
0.3V to +24V
Electrical Characteristics
Limits in standard typeface are for T
J = 25C, and limits in boldface type apply over the full operating temperature range. Un-
less otherwise specified; V
ON/OFF = 1.5V, VIN = 15V.
Symbol
Parameter
Conditions
Typ
LM2975AI-X.X
LM2975I-X.X
Units
Min
Max
Min
Max
V
REG
Regulation Voltage
(12V Versions)
12.5 < V
IN < 24V
12.0
11.820
12.180
11.700
12.300
V
(V
IN - 0.5V) > VGATE
> (V
IN - 5V)
11.640
12.360
11.520
12.480
Regulation Voltage
(5V Versions)
5.5 < V
IN < 24V
5.0
4.925
5.075
4.875
5.125
(V
IN - 0.5V) > VGATE
> (V
IN - 4.5V)
4.850
5.150
4.800
5.200
Regulation Voltage
(3.3V Versions)
3.8 < V
IN < 24V
3.3
3.250
3.350
3.217
3.383
(V
IN - 0.5V) > VGATE
> (V
IN - 3.3V)
3.201
3.399
3.168
3.432
V
COMP
Comp Pin Voltage
V
REG < VIN < 24V
1.240
1.215
1.265
1.203
1.277
V
1.209
1.271
1.196
1.284
I
Q
Quiescent Current
V
IN = 5V
180
240
A
320
V
ON/OFF = 0V
0.01
11
V
CL
Current Limit
Sense Voltage
V
IN = 15V
V
FB =0.9XVREG
57
45
69
45
69
mV
39
72
39
72
V
ON/OFF
ON/OFF Threshold
Output = ON
0.94
1.10
V
1.20
Output = OFF
0.87
0.70
0.40
I
ON/OFF
Input Bias Current
V
ON/OFF = 1.5V
34
50
A
75
I
G
Gate Drive Current (Sourcing)
V
G = 7.5V
V
FB =1.1XVREG
3.5
1.3
mA
0.3
Gate Drive Current (Sinking)
V
G = 7.5V
V
FB =0.9XVREG
1100
350
A
40
V
G(MIN)
Gate Clamp Voltage
V
IN = 24V
V
FB =0.9XVREG
17
15
19
15
19
V
R(V
IN-G)
Resistance from
Gate to V
IN
V
IN = 24V
V
ON/OFF =0
500
k
Open Loop
Voltage Gain
V
IN = 15V
0.5V
≤ V
GATE
≤ 13
5000
V/V
Note 1: Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the
device outside of its rated operating conditions.
LP2975
www.national.com
3
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