LM2621
Pin Description
Pin
1
2
3
4
5
6
7
8
EN
FREQ
FB
SGND
V
DD
BOOT
SW
Name
PGND
Power Ground
Active-Low Shutdown Input
Frequency Adjust. An external resistor connected between this pin and Pin 6 (V
DD
) sets the switching
frequency of the LM2621.
Output Voltage Feedback
Signal Ground
Power Supply for Internal Circuitry
Bootstrap Supply for the Gate Drive of Internal MOSFET Power Switch
Drain of the Internal MOSFET Power Switch
Function
Typical Performance Characteristics
Efficiency vs Load Current
V
OUT
= 5.0V
Efficiency vs Load Current
V
OUT
= 3.3V
10093401
10093402
V
FB
vs Temperature
I
OP
vs Temperature
10093403
10093404
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