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LM2679S-ADJ Datasheet(PDF) 3 Page - Texas Instruments

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Part # LM2679S-ADJ
Description  LM2679 SIMPLE SWITCHER짰 5-A Step-Down Voltage Regulator With Adjustable Current Limit
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM2679S-ADJ Datasheet(HTML) 3 Page - Texas Instruments

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Not to scale
DAP
1
NC
14
Switch_output
2
Input
13
Switch_output
3
Input
12
Switch_output
4
CB
11
NC
5
NC
10
NC
6
Current_adjust
9
GND
7
FB
8
SS
Not to scale
1
Switch_output
2
Input
3
CB
4
GND
5
Current_adjust
6
FB
7
SS
Not to scale
3
LM2679
www.ti.com
SNVS026O – MARCH 2000 – REVISED JUNE 2016
Product Folder Links: LM2679
Submit Documentation Feedback
Copyright © 2000–2016, Texas Instruments Incorporated
5 Pin Configuration and Functions
KTW Package
7-Pin TO-263
Top View
NDZ Package
7-Pin TO-220
Top View
NHM Package
14-Pin VSON
Top View
Connect DAP to pin 9
Pin Functions
PIN
I/O
DESCRIPTION
NAME
TO-263, TO-220
VSON
Switch output
1
12, 13, 14
O
Source pin of the internal high side FET. This is a switching node. Attached
this pin to an inductor and the cathode of the external diode.
Input
2
2, 3
I
Supply input pin to collector pin of high side FET. Connect to power supply
and input bypass capacitors CIN. Path from VIN pin to high frequency
bypass CIN and GND must be as short as possible.
CB
3
4
I
Boot-strap capacitor connection for high-side driver. Connect a high quality
100-nF capacitor from CB to VSW pin.
GND
4
9
Power ground pins. Connect to system ground. Ground pins of CIN and
COUT. Path to CIN must be as short as possible.
Current adjust
5
6
I
Current limit adjust pin. Connect a resistor from this pin to GND to set the
current limit of the part.
FB
6
7
I
Feedback sense input pin. Connect to the midpoint of feedback divider to
set VOUT for adjustable version or connect this pin directly to the output
capacitor for a fixed output version.
SS
7
8
I
Soft-start pin. Connect a capacitor from this pin to GND to control the output
voltage ramp. If the feature not desired, the pin can be left floating
NC
1, 5, 10, 11
No connect pins


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