参数资料
型号: LM7918CT
厂商: Fairchild Semiconductor
文件页数: 2/18页
文件大小: 0K
描述: IC REG LDO -18V 1A TO-220-3
标准包装: 50
稳压器拓扑结构: 负,固定式
输出电压: -18V
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
产品目录页面: 1220 (CN2011-ZH PDF)
其它名称: LM7918CTFS
Block Diagram
GND
R1
VOLTAGE
REFERENCE
+
-
PROTECTION
Q1
Q2
R2
Output
I1
I2
CIRCUITRY
Rsc
In
Input
Figure 1. Block Diagram
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-
ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi-
tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The
absolute maximum ratings are stress ratings only. Values are at T A = 25°C unless otherwise noted.
Symbol
V I
R θ JC
R θ JA
T OPR
T STG
Parameter
Input Voltage
Thermal Resistance, Junction-Case (1)
Thermal Resistance, Junction-Air (1, 2)
Operating Temperature Range
Storage Temperature Range
Value
-35
5
65
0 to +125
- 65 to +150
Unit
V
° C/W
° C/W
° C
° C
Notes:
1. Thermal resistance test board, size: 76.2 mm x 114.3 mm x 1.6 mm(1S0P), JEDEC standard:
JESD51-3, JESD51-7.
2. Assume no ambient airflow.
? 2002 Fairchild Semiconductor Corporation
KA79XX / KA79XXA / LM79XX Rev. 1.1.0
2
www.fairchildsemi.com
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