参数资料
型号: TL317CPWG4
厂商: Texas Instruments
文件页数: 5/21页
文件大小: 0K
描述: IC REG LDO ADJ .1A 8TSSOP
标准包装: 150
稳压器拓扑结构: 正,可调式
输出电压: 1.2 V ~ 32 V
输入电压: 5 V ~ 38 V
稳压器数量: 1
电流 - 输出: 100mA(最小值)
电流 - 限制(最小): 100mA
工作温度: 0°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 8-TSSOP
包装: 管件

APPLICATION INFORMATION
SLVS004H – APRIL 1979 – REVISED OCTOBER 2011
VI
Input
TL317
Output
VO (B)
35 V
Input
TL317
Output
VO (A)
C1 = 0.1 m F (A)
Adjustment
R1
470 ?
C2 = 1 m F
(C)
Adjustment
R1 = 120 ?
C1 = 0.1 m F
10 V
R2
R3 =
820 ?
R2 = 3 k ?
1N4002
A. Use of an input bypass capacitor is recommended if
regulator is far from the filter capacitors.
B. Output voltage is calculated from the equation:
V O = V ref ? 1+ ÷
V O = V ref ? 1+ ÷ - 10 V
? R2 ?
è R1 ?
where: V ref equals the difference between OUTPUT and
ADJUSTMENT voltages ( ≈ 1.25 V).
C. Use of an output capacitor improves transient response,
but is optional.
Figure 1. Adjustable Voltage Regulator
TL317
A. Output voltage is calculated from the equation:
? R2 + R3 ?
è R1 ?
where: V ref equals the difference between OUTPUT
and ADJUSTMENT voltages ( ≈ 1.25 V).
Figure 2. 0-V to 30-V Regulator Circuit
TL317
D1
I limit = 1.25
VI
C1 =
Input Output
Adjustment
R1 =
470 ?
(A)
1N4002
VO (B)
VI
Input Output
Adjustment
R1
R1
0.1 m F
+
R2 =
10 k ?
+
C2 = 10 m F
C3 = 1 m F
A. D1 discharges C2 if output is shorted to ground.
B. Use of an output capacitor improves transient response, but is
optional.
Figure 3. Regulator Circuit With Improved Ripple
Rejection
Figure 4. Precision Current-Limiter Circuit
Copyright ? 1979 – 2011, Texas Instruments Incorporated
Product Folder Link(s): TL317
5
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