L4976D STMicroelectronics, L4976D Datasheet - Page 4

• Manufacturer Part Number: L4976D
• Description: IC REG SW 1A STEPDOWN 16-SOIC
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of L4976D

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 0.5 ~ 50 V
• Current - Output: 1A
• Frequency - Switching: 100kHz
• Voltage - Input: 8 ~ 55 V
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Power - Output: 800mW
• Output Voltage: 50 V
• Operating Temperature Range: - 40 C to + 150 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Pin settings
2
2.1
2.2
4/17
Pin settings
Pin connection
Figure 3.
Pin description
Table 1. Pin description
1. Pins 1, 7, 8, 9, 10, 15 and 16 are not internally, electrically connected to the die.
DIP8
GND
V
OSC
OUT
1
2
3
4
5
6
7
8
REF
N° Pin
Pin connection (top view)
1
2
3
4
SO16W
5, 6
11
12
13
14
DIP8
2
3
4
(1)
8
7
6
5
COMP
Name
BOOT
VREF
GND
OSC
OUT
VCC
FB
FB
COMP
BOOT
VCC
5.1V Reference voltage with 20mA current capability.
Stepdown regulator output.
E/A output to be used for frequency compensation.
Ground
An external resistor connected between the unregulated
input voltage and this pin and a capacitor connected
from this pin to ground fix the switching frequency. (Line
feed forward is automatically obtained)
Unregulated DC input voltage.
A capacitor connected between this pin and OUT allows
to drive the internal VDMOS.
Stepdown feedback input. Connecting directly to this pin
results in an output voltage of 3.3V. An external resistive
divider is required for higher output voltages.
GND
V
OSC
OUT
OUT
N.C.
N.C.
N.C.
REF
1
2
3
4
5
6
7
8
Description
SO16
16
15
14
13
12
11
10
9
N.C.
N.C.
FB
COMP
BOOT
VCC
N.C.
N.C.
L4976