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| 型号： | LM7924CT |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 12/18页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO -24V 1A TO-220-3 |
| 标准包装： | 50 |
| 稳压器拓扑结构： | 负，固定式 |
| 输出电压： | -24V |
| 输入电压： | 可下调至 -35V |
| 电压 - 压降（标准）： | 2V @ 1A |
| 稳压器数量： | 1 |
| 电流 - 输出： | 1A |
| 工作温度： | 0°C ~ 125°C |
| 安装类型： | 通孔 |
| 封装/外壳： | TO-220-3 |
| 供应商设备封装： | TO-220-3 |
| 包装： | 管件 |
| 其它名称： | LM7924CTFS |
Electrical Characteristics (KA7912A)
(V I = -19 V, I O = 500 mA, 0 ° C ≤ T J ≤ +125 ° C, C I = 2.2 μ F, C O =1 μ F; unless otherwise specified.)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
T J =+25 ° C
-11.75
-12.00
-12.25
V O
Output Voltage
I O = 5 mA to 1 A, P O ≤ 15 W,
V I = -15.5 V to -27 V
-11.50
-12.00
-12.50
V
Δ V O
Line Regulation (12)
T J = +25 ° C
V I = -14.5 V to -27 V,
Io = 1 A
V I = -16 V to -22 V,
Io = 1 A
12
6
120
60
mV
V I = -14.8 V to -30 V
V I = -16 V to -22 V, Io = 1 A
12
12
120
120
Δ V O
I Q
Δ I Q
Δ Vo/ Δ T
V N
Load Regulation (12)
Quiescent Current
Quiescent Current
Change
Temperature Coefficient
of V D
Output Noise Voltage
T J =+25 ° C, I O = 5 mA to 1.5 A
T J =+25 ° C, I O = 250 mA to 750 mA
T J =+25 ° C
I O = 5 mA to 1 A
V I = -15 V to -30 V
I O = 5 mA
f = 10 Hz to 100 kHz, T A =+25 ° C
12
4
3
0.05
0.10
-0.8
200
150
75
6
0.50
1.00
mV
mA
mA
mV/ ° C
μ V
RR
V D
I SC
I PK
Ripple Rejection
Dropout Voltage
Short-Circuit Current
Peak Current
f = 120 Hz, Δ V I = 10 V
T J =+25 ° C, I O = 1 A
T J =+25 ° C, V I = -35 V
T J =+25 ° C
54
60
2
300
2.2
dB
V
mA
A
Note:
12. Load and line regulation are specified at constant junction temperature. Changes in V O due to heating effects must
be taken into account separately. Pulse testing with low duty is used.
? 2002 Fairchild Semiconductor Corporation
KA79XX / KA79XXA / LM79XX Rev. 1.1.0
12
www.fairchildsemi.com
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