ET-IL317L [ESTEK]
100 mA Adjustable Output Positive VoltageRegulator; 百毫安可调输出正VoltageRegulator
| 型号： | ET-IL317L |
| 厂家： | 
Estek Electronics Co. Ltd |
| 描述： | 100 mA Adjustable Output Positive VoltageRegulator |
| 文件： | 总2页 (文件大小：178K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ET-IL317L
100 m A A d ju s ta b le O u tp u t P o s itive V o lta g e R e g u la to r
The IL317L is an adjustable 3-terminal positive voltage regulator capable of
supplying in excess of 100 mA over an output voltage range of 1.2 V to 37 V. This
voltage regulator is exceptionally easy to use and requires only two external
resistors to set the output voltage. Further, it employs internal current limiting,
thermal shutdown and safe area compensation, making them essentially blow –
out proof.
The IL317L serves a wide variety of applications including local, on card
regulation. This device can also be used to make a programmable output
regulator, or by connecting a fixed resistor between the adjustment and output,
the IL317L can be used as a precision current regulator.
3
2
1
Features
• Output Current in Excess of 100 mA
• Output Adjustable Between 1.2 V and 37 V
• Internal Thermal Overload Protection
• Internal Short Circuit Current Limiting
• Output Transistor Safe-Area Compensation
• Floating Operation for High Voltage Applications
• Standard 3-Lead Transistor Package
• Eliminates Stocking Many Fixed Voltages
Pin 1.Adjust
2.Vout
3. Vin
*Cin is required if regulator is located an appreciable distance
from power supply filter.
**Co is not needed for stability, however, it does improve
transient response.
Vout = 1.25 V (1+R2/R1) + IAdjR2
Since IAdj is controlled to less than 100µA, the error
associated with this term is negligible in most applications.
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Input-Output Differential
VI-Vo
PD
40
Vdc
Power Dissipation
Case TO-92
TA=25°C
Internally Limited
W
Thermal Resistance, Junction-to-Ambient
Thermal Resistance, Junction-to-Case
Case SOIC-8 (Note 1)
RθJA
RθJC
160
83
°C/W
°C/W
TA=25°C
Thermal Resistance, Junction-to-Ambient
Thermal Resistance, Junction-to-Case
RθJA
RθJC
180
45
°C/W
°C/W
Operating Junction Temperature Range
Storage Temperature Range
Tj
-10 to +125
-65 to +150
°C
°C
Tstg
BEIJING ESTEK ELECTRONICS CO.,LTD
1
ET-IL317L
100 m A A d ju s ta b le O u tp u t P o s itive V o lta g e R e g u la to r
ELECTRICAL CHARACTERISTICS
(VI-VO = 5.0 V ; IO = 40 mA;TA = 25°C, unless otherwise noted, Imax and Pmax (NOTE1))
Reference Voltage (TA =-10° to +125°C)
3.0 V £ VI - VO £ 40 V,
Vo
1.20
1.30
20
V
10mA £ IO £ Imax,PD£ Pmax
Line Regulation (NOTE2)
3.0 V £VI - VO £ 40 V, Io=5mA
Line Regulation (TA =-10° to +125°C)
(NOTE2)
3.0 V £VI - VO £ 40 V, Io=5mA
Load Regulation (NOTE2)
10 mA £ IO £ Imax,Vi=6.25V
Load Regulation (TA =-10° to +125°C)
(NOTE2)
-
-
-
-
mV
mV
mV
mV
DVov
DVov
DVoi
DVoi
35
6.25
18.75
100
10 mA £ IO £ Imax,Vi=6.25V
Adjustment Pin Current
IAdj
10
-
mA
mA
Adjustment Pin Current Change , PD£ Pmax
3.0 V £VI - VO £ 40 V, 10 mA £ IO £ Imax
D IAdj
5
-
IO MAX
ILmin
0.1
-
A
Maximum Output Current ,PD£ Pmax
Minimum Load Current to Maintain
Regulation (VI - VO=40V)
5
-
mA
Ripple Rejection
VO = 1.2 V, f = 120 Hz
RR
60
dB
NOTES:
1.Imax = 100 mA ,Pmax=625 mW
2. Load and line regulation are specified at constant junction temperature.
Changes in VO due to heating effects must be taken into account separately.
Pulse testing with low duty cycle is used.
Fig.1 Test Circuit for Vo>1.25V
Сi=0,1mF, Сo=1,0 mF.
Fig.2 Test Circuit for Vo=1.25V
Сi=0,1mF, Сo=1,0 mF.
Vo=1,25(1+R2/R1)IADJ R2
.
BEIJING ESTEK ELECTRONICS CO.,LTD
2
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