LM3940J View Datasheet(PDF) - Bay Linear
Part Name
Description
MFG CO.
'LM3940J' PDF : 3 Pages View PDF
ABSOLUTE MAXIMUM RATINGS
Lead Temp. (Soldering, 5 Seconds).................................260°C
Storage Temperature Range.............................. -65° to +150°C
Operating Junction Temperature Range
LM3940 Control Section........................... -45°C +125°C
LM3940 Power Transistor..........................-45°C +150°C
LM3940
Input Voltage ........................................................26V
Maximum Output Current....................................3.5A
Input Supply Voltage (Survival) .......... -20V to +60V
ELECTRICAL CHARACTERISTICS IOUT = 5mA, V IN =V OUT + 1V, I l = 1250mA, C L = 10µF. Ta=25°C, unless otherwise specified.
PARAMETER
CONDITIONS
Typ
LM3940
Units
Min
Max
Output Voltage
5mA≤IL≤1.25A
3.3
3.267
3.330
V
3.3
3.234
3.366
Output Voltage
Line Regulation
Load Regulation
5mA≤IL≤1.25A
IO = 5mA, 4.5V≤VIN ≤5.5V
50mA ≤ IOUT≤ 1.25 A
5.0
4.95
5.05
V
5.0
4.90
5.10
20
40
mV
35
50
mV
Dropout Voltage
Quiescent Current
Short Circuit Current
IO = 5mA
IO = 1000mA
IO = 1250mA
IO = 5mA, VIN = VOUT, +1V
IO = 1000mA, VIN = VOUT, +1V
IO = 1.25A
RL = 0
120
180
mV
400
600
500
800
240
350
µA
22
35
mA
35
70
1.7
1.2
A
Current Limit
Output Noise Voltage
(10Hz to 100kHz)
IL = 100mA
VOUT = 0V (Note 4)
CL = 10µF
CL = 33µF
1.7
1.5
400
260
A
µV RMS
BLOCK DIAGRAM
Bay Linear, Inc 2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556
www.baylinear.com
Share Link: 
