L4949ED STMicroelectronics, L4949ED Datasheet - Page 6

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

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

Block diagram and pin description
6/19
Table 2.
SO-8
1
2
3
4
5
6
7
8
-
Pin N°
3, 8, 9, 13, 18
4, 5, 6, 7, 14,
15, 16, 17
SO-20
Pin definitions and functions
19
20
10
11
12
1
2
Symbol
V
GND
RES
NC
S
V
V
C
OUT
S
S
O
Z
T
I
Doc ID 4275 Rev 6
Input supply voltage. Block to GND via an external
capacitor (see
Sense input pin to supervise input voltage. Connect via an
external voltage divider connected to V
Preregulator output voltage. For details, see
Preregulator.
Reset pulse delay adjustment. Connecting this pin via a
capacitor to GND
Ground reference
Reset output. It is pulled down when the output voltage
goes below V
Sense output. This open collector pin must be connected to
V
the S
Output voltage. Block to GND via an external capacitor (see
Figure
Not connected pins
OUT
I
via an external resistor. It is pulled down whenever
voltage becomes lower than an internal voltage.
3)
RT
Figure
.
3).
Function
S
and to GND.
Section 3.4:
L4949E