L4949ED STMicroelectronics, L4949ED Datasheet - Page 2

IC VREG VLDO MULTIFUNCT SO-8

L4949ED

Manufacturer Part Number
L4949ED
Description
IC VREG VLDO MULTIFUNCT SO-8
Manufacturer
STMicroelectronics
Datasheet

Specifications of L4949ED

Regulator Topology
Positive Fixed
Voltage - Output
5V
Voltage - Input
Up to 28V
Voltage - Dropout (typical)
0.3V @ 100mA
Number Of Regulators
1
Current - Output
100mA
Current - Limit (min)
120mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Number Of Outputs
1
Polarity
Positive
Input Voltage Max
28 V
Output Voltage
5 V
Output Type
Fixed
Dropout Voltage (max)
0.5 V
Output Current
100 mA
Line Regulation
20 mV
Load Regulation
30 mV
Voltage Regulation Accuracy
1 %
Maximum Operating Temperature
+ 150 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Reference Voltage
1.23 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Contents
Contents
1
2
3
4
5
2/19
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1
2.2
2.3
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1
3.2
3.3
3.4
3.5
3.6
Package and packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1
4.2
4.3
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Supply voltage transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Preregulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Reset circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Sense comparator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
ECOPACK
SO-8 TP package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
SO-20 TP package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
®
packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Doc ID 4275 Rev 6
L4949E

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