参数资料
型号: NCV317MBSTT3G
厂商: ON Semiconductor
文件页数: 5/14页
文件大小: 0K
描述: IC REG LDO ADJ .5A SOT-223-4
标准包装: 4,000
稳压器拓扑结构: 正,可调式
输出电压: 1.2 V ~ 37 V
输入电压: 最高 40 V
稳压器数量: 1
电流 - 输出: 500mA(最小)
电流 - 限制(最小): 500mA
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: TO-261-4,TO-261AA
供应商设备封装: SOT-223
包装: 带卷 (TR)
LM317M, NCV317MA, NCV317M
V O (min Load)
Load Regulation (mV) = V O (min Load) -V O (max Load)
V O (min Load) - V O (max Load)
Load Regulation (% V O ) =
X 100
V O (min Load)
V in
V in
LM317M
V out
I L
VO (max Load)
R L
C in
0.1 m F
I Adj
Adjust
R 1
240
1%
C O
+
1.0 m F
*
(max Load)
R L
(min Load)
R 2
1%
* Pulse Testing Required:
1% Duty Cycle is suggested.
Figure 4. Load Regulation and D I Adj / Load Test Circuit
V in
LM317M
V out
I L
V I
C in
0.1 m F
I Adj
Adjust
R 1
240
1%
V ref
C O
+
1 m F
R L
V O
I SET
R 2
1%
*Pulse Testing Required:
1% Duty Cycle is suggested.
To Calculate R 2 :
V out = I SET R 2 + 1.250 V
Assume I SET = 5.25 mA
Figure 5. Standard Test Circuit
24V
14V
f = 120 Hz
V in
LM317M
V out
V out = 10 V
C in
0.1 m F
Adjust
R 1
240
1%
D 1 *
1N4002
C O
+
1.0 m F
R L
V O
R 2
1.65K
1%
**
C Adj
+
10 m F
* D 1 Discharges C Adj if Output is Shorted to Ground.
**C Adj provides an AC ground to the adjust pin.
Figure 6. Ripple Rejection Test Circuit
http://onsemi.com
5
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