LM317M_06 查看數據表（PDF） - ON Semiconductor
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LM317M_06 Datasheet PDF : 13 Pages
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Vin
Vin
Cin
0.1mF
LM317M
LM317M
Load Regulation (mV) = VO (min Load) −VO (max Load)
VO (min Load) − VO (max Load)
Load Regulation (% VO) =
VO (min Load)
X 100
Vout
IL
VO (min Load)
VO (max Load)
Adjust
IAdj
R1
240
1%
+
CO 1.0mF
RL
(max Load)
*
RL
(min Load)
* Pulse Testing Required:
1% Duty Cycle is suggested.
R2
1%
Figure 4. Load Regulation and DIAdj/Load Test Circuit
Vin
VI
Cin 0.1mF
*Pulse Testing Required:
1% Duty Cycle is suggested.
Vout
LM317M
IL
Adjust
IAdj
R1
240
1%
Vref
ISET
R2
1%
To Calculate R2:
Vout = ISET R2 + 1.250 V
Assume ISET = 5.25 mA
Figure 5. Standard Test Circuit
+
CO 1mF
RL
VO
24V
14V
f = 120 Hz
Vin
Vout
LM317M
Vout = 10 V
Cin 0.1mF
Adjust
R1
240
1%
D1 *
1N4002
RL
+
CO 1.0mF
VO
R2
1.65K
1%
**
+
CAdj
10mF
* D1 Discharges CAdj if Output is Shorted to Ground.
**CAdj provides an AC ground to the adjust pin.
Figure 6. Ripple Rejection Test Circuit
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