參數(shù)資料
型號: LM317LM
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 基準電壓源/電流源
英文描述: 3-Terminal Adjustable Regulator
中文描述: 1.2 V-37 V ADJUSTABLE POSITIVE REGULATOR, PDSO8
封裝: SOIC-8
文件頁數(shù): 4/12頁
文件大?。?/td> 184K
代理商: LM317LM
LM317L
4
MOTOROLA ANALOG IC DEVICE DATA
* Pulse Testing Required:
1% Duty Cycle is suggested.
Load Regulation (mV) = VO (min Load) –VO (max Load)
VO (min Load) – VO (max Load)
Load Regulation (% VO) =
X
100
VO (min Load)
VO (max Load)
LM317L
Cin
0.1
μ
F
Adjust
R2
1%
CO
1.0
μ
F
+
*
RL
(max Load)
RL
(min Load)
Vout
R1
240
1%
Vin*
Vin
IAdj
IL
Figure 2. Load Regulation and
IAdj
/
Load Test Circuit
VO (min Load)
Pulse Testing Required:
1% Duty Cycle is suggested.
LM317L
Vin
Vout
Adjust
R1
240
1%
+
1
μ
F
CO
RL
Cin
R2
1%
To Calculate R2:
Vout = ISET R2 + 1.250 V
Assume ISET = 5.25 mA
IL
IAdj
ISET
Vref
VO
VI
0.1
μ
F
Figure 3. Standard Test Circuit
LM317L
Vin
Vout
Vout = 1.25 V
RL
Cin
0.1
μ
F
Adjust
R1
240
1%
D1 *
1N4002
CO
+
1
μ
F
14.30V
4.30V
R2
1.65K
1%
**
10
μ
F
+
* D1 Discharges CAdj if Output is Shorted to Ground.
f = 120 Hz
VO
**CAdj provides an AC ground to the adjust pin.
Figure 4. Ripple Rejection Test Circuit
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相關代理商/技術參數(shù)
參數(shù)描述
LM317LM 制造商:Texas Instruments 功能描述:V REG ADJ +1.2/37V SMD SOIC8 317
LM317LM/ASMY 制造商:Texas Instruments 功能描述:
LM317LM/HALF 制造商:Texas Instruments 功能描述:V REG ADJ +1.2/37V SMD SOIC8 317
LM317LM/NAK2 制造商:Texas Instruments 功能描述:
LM317LM/NOPB 功能描述:線性穩(wěn)壓器 - 標準 3-TERMINAL ADJ REG RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-323-5L