L4938E STMicroelectronics, L4938E Datasheet - Page 2

• Manufacturer Part Number: L4938E
• Description: IC REG LDO DUAL 5V/ADV 16DIP
• Manufacturer: STMicroelectronics

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

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