L4938ED STMicroelectronics, L4938ED Datasheet - Page 7

• Manufacturer Part Number: L4938ED
• Description: IC VREG ADVANCED DUAL SO-20
• Manufacturer: STMicroelectronics

Specifications of L4938ED

• 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: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Polarity: Positive
• Number Of Outputs: 2
• Output Type: Fixed
• Output Voltage: 5 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: SMD/SMT
• Reference Voltage: 1.23 V
• Voltage Regulation Accuracy: 2 %
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

L4938ED, L4938EPD
2
2.1
Note:
Electrical specifications
Absolute maximum ratings
Stressing the device above the ratings listed in the “Absolute maximum ratings” tables may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the Operating sections of
this specification is not implied. Exposure to the conditions in this section for extended
periods may affect device reliability. Refer also to the STMicroelectronics SURE Program
and other relevant quality documents.
Table 3.
1. Current forced means voltage unlimited but current limited to the specified value voltage forced
2. Typical value soldered on a PC board with 8 cm
The circuit is ESD protected according to MIL-STD-883C.
V
I
Symbol
RES
RES
means voltage limited to the specified values while the current is not limited
V
V
T
V
T
V
I
INDC
P
INTR
I
T
I
JSD
EN
SI
EN
stg
O
SI
, V
, I
O
J
SO
SO
Absolute maximum ratings
DC operating supply voltage
Transient operating supply voltage (T < 400 ms)
Output current
Sense input voltage (voltage forced)
Sense input current (current forced)
Enable input voltage (voltage forced)
Sense input current (current forced)
Output voltages
Output currents (output low)
Power dissipation at T
Storage temperature
Operating junction temperature
Thermal shutdown junction temperature output 2 will
shutdown typically at T
Doc ID 17243 Rev 1
Parameter
amb
J
10 K lower than output 1
= 80 °C
(2)
(1)
(1)
(1)
2
(1)
copper ground plane (35 mm thick).
Electrical specifications
internally limited
-40 to 150
-65 to 150
-0.3 to 20
-14 to 40
-20 to 20
-20 to 20
Value
875
165
±1
±1
28
5
Unit
mW
mA
mA
mA
°C
°C
°C
V
V
V
V
V
7/20