lm22677tje-adj National Semiconductor Corporation, lm22677tje-adj Datasheet - Page 2

• Manufacturer Part Number: lm22677tje-adj
• Description: 5a Simple Switcher , Step-down Voltage Regulator With Synchronization Or Adjustable Switching Frequency
• Manufacturer: National Semiconductor Corporation

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Output Voltage
Connection Diagram
Ordering Information
Pin Descriptions
Pin
1
2
3
4
5
6
7
ADJ
ADJ
5.0
5.0
RT/SYNC
BOOT
Name
GND
VIN
SW
EN
FB
LM22677TJE-ADJ
LM22677TJE-5.0
LM22677TJ-ADJ
LM22677TJ-5.0
Order Number
Oscillator frequency adjust
Source input voltage
Precision enable pin
pin or frequency
synchronization
Bootstrap input
System ground
Feedback pin
Description
Switch pin
TO-263 THIN Exposed Pad
7-Lead Plastic TO-263 THIN Package
Package Type
NS Package Number TJ7A
Application Information
Attaches to the switch node.
Input to the regulator. Operates from 4.5V to 42V.
Provides the gate voltage for the high side NFET.
Provide good capacitive decoupling between VIN and this pin.
A resistor connected from this pin to GND adjusts the oscillator frequency. This
pin can also accept an input for synchronization from an external clock. Pin can
be left floating and internal setting will be default to 500 kHz.
Inverting input to the internal voltage error amplifier.
When pulled low regulator turns off.
2
NSC Package Drawing
TJ7A
30074102
1000 Units in Tape and Reel
1000 Units in Tape and Reel
250 Units in Tape and Reel
250 Units in Tape and Reel
Supplied As