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LM2623MMX Datasheet(PDF) 2 Page - Texas Instruments

No. de pieza LM2623MMX
Descripción Electrónicos  LM2623 General Purpose, Gated Oscillator Based, DC/DC Boost Converter
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Fabricante Electrónico  TI [Texas Instruments]
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LM2623
SNVS188G – MAY 2004 – REVISED DECEMBER 2005
www.ti.com
Connection Diagram
Figure 1. WSON Package
Top View
Figure 2. VSSOP-8 (DGK) Package
Top View
Pin Description
WSON-14 Pin
VSSOP-8 Pin
Name
Function
1
NC
No Connect
2, 3
1
PGND
Power Ground (WSON Pins 2 & 3 must be shorted together).
4
2
EN
Active-Low Shutdown Input
5
3
FREQ
Frequency Adjust. An external resistor connected between this pin
and a voltage source sets the switching frequency of the LM2623.
6
4
FB
Output Voltage Feedback
7
NC
No Connect
8
NC
No connect
9
5
SGND
Signal Ground
10
6
VDD
Power Supply for Internal Circuitry
11
7
BOOT
Bootstrap Supply for the Gate Drive of Internal MOSFET Power
Switch
12, 13
8
SW
Drain of the Internal MOSFET Power Switch. (WSON Pins 12 & 13
must be shorted together).
14
NC
No Connect
DAP
DAP
To be soldered to board for enhanced thermal dissipation. To be
electrically isolated/floating.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
2
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Copyright © 2004–2005, Texas Instruments Incorporated
Product Folder Links: LM2623


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