L4938ED STMicroelectronics, L4938ED Datasheet - Page 6
![IC VREG ADVANCED DUAL SO-20](/photos/6/56/65691/497-20-soic__7_5mm_width__series_sml.jpg)
L4938ED
Manufacturer Part Number
L4938ED
Description
IC VREG ADVANCED DUAL SO-20
Manufacturer
STMicroelectronics
Datasheet
1.L4938EPD13TR.pdf
(20 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
L4938ED
Manufacturer:
ST
Quantity:
20 000
Company:
Part Number:
L4938ED013TR
Manufacturer:
OKISEMICONDUCTOR
Quantity:
2 854
Part Number:
L4938ED013TR
Manufacturer:
ST
Quantity:
20 000
Part Number:
L4938EDTR-E
Manufacturer:
ST
Quantity:
20 000
Block diagram and pin description
6/20
Table 2.
4, 5, 6, 7, 14, 15,
SO-20
16, 17
18
19
20
10
11
12
13
1
2
3
8
9
PIn number
Pin definitions and functions
PowerSO-20
1, 10, 11, 20
2, 9, 19
14
15
16
17
18
3
4
5
6
7
8
Doc ID 17243 Rev 1
Name
OUT1
OUT2
GND
RES
ADJ
V
V
SO
NC
PR
CT
EN
SI
S2
S1
Supply voltage (400 mA regulator)
Supply voltage (100 mA regulator, reset, sense)
Sense input
Reset threshold programming
Reset delay capacitor
Enable (low activates the 400 mA regulator)
Ground
Reset output
Sense output
100 mA regulator output
Feedback of 400 mA regulator
400 mA regulator output
Not connected
Function
L4938ED, L4938EPD