L4938E STMicroelectronics, L4938E Datasheet - Page 2
![IC REG LDO DUAL 5V/ADV 16DIP](/photos/6/56/65691/497-20-soic__7_5mm_width__series_sml.jpg)
L4938E
Manufacturer Part Number
L4938E
Description
IC REG LDO DUAL 5V/ADV 16DIP
Manufacturer
STMicroelectronics
Datasheet
1.L4938E.pdf
(12 pages)
Specifications of L4938E
Regulator Topology
Positive Fixed and Adjustable
Voltage - Output
5V, 4.9 ~ 5.1 V
Voltage - Input
Up to 28V
Voltage - Dropout (typical)
0.2V @ 100mA, 0.3V @ 400mA
Number Of Regulators
2
Current - Output
100mA, 400mA
Current - Limit (min)
100mA, 450mA
Operating Temperature
-40°C ~ 150°C
Mounting Type
Through Hole
Package / Case
20-SOIC (7.5mm Width)
Polarity
Positive
Number Of Outputs
2
Output Type
Fixed
Output Voltage
5.1 V
Output Current
5 mA
Line Regulation
20 mV
Load Regulation
50 mV
Dropout Voltage (max)
0.2 V
Input Voltage Max
20 V
Maximum Operating Temperature
+ 150 C
Minimum Operating Temperature
- 40 C
Maximum Power Dissipation
875 mW
Mounting Style
Through Hole
Reference Voltage
1.23 V
Voltage Regulation Accuracy
2 %
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
497-3355-5
497-3914-5
497-3914-5
497-3914-5
497-3914-5
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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Manufacturer:
ST
Quantity:
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Manufacturer:
ST
Quantity:
20 000
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Part Number:
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Part Number:
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Part Number:
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Manufacturer:
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Part Number:
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Manufacturer:
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Quantity:
20 000
L4938E - L4938ED - L4938EPD
ABSOLUTE MAXIMUM RATINGS
Note 1:
Note 2: Current forced means voltage unlimited but current limited to the specified value
Note 3: Typical value soldered on a PC board with 8cm
BLOCK DIAGRAM
2/12
V
I
Symbol
RES
RES
V
V
T
V
T
V
I
P
INDC
INTR
Voltage forced means voltage limited to the specified valueswhile the current is not limited
I
I
EN
T
JSD
SI
O
EN
stg
The circuit is ESD protected according to MIL-STD-883C
SI
, V
, I
O
j
VS1
VS2
EN
PR
SI
SO
SO
1.23V
DC Operating Supply Voltage
Transient Operating Supply Voltage (T < 400ms)
Output Current
Sense Input Voltage (Voltage Forced) (note 2)
Sense Input Current (Current Forced) (note 2)
Enable Input Voltage (Voltage Forced) (note 2)
Sense Input Current (Current Forced) (note 2)
Output Voltages
Output Currents (Output Low)
Power Dissipation at T
Powerdip 12+2+2
Storage Temperature
Operating Junction Temperature
Thermal shutdown junction temperature Output 2 will shut-down
typically at Tj 10K lower than output 1
SENSE
RESET
REG1
REG2
amb
1.23V
Parameter
= 80 C (note 3)
2
copper ground plane (35mm thick).
1.23V
1.23V
1.4V
REFERENCE
internally limited
-65 to 150
-40 to 150
-0.3 to 20
-14 to 40
-20 to 20
-20 to 20
D94AT074A
Value
875
165
28
5
1
1
OUT1
OUT2
GND
RES
ADJ
SO
CT
Unit
mW
mA
mA
mA
V
V
V
V
V
C
C
C