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LM3242TMX/NOPB Datasheet(PDF) 3 Page - Texas Instruments

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Part # LM3242TMX/NOPB
Description  750mA Miniature Adjustable Step-Down DC-DC Converter
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM3242TMX/NOPB Datasheet(HTML) 3 Page - Texas Instruments

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VCON
FB
NC
SGND
BPEN
EN
VIN
SW
PGND
VCON
FB
NC
SGND
BPEN
EN
VIN
SW
PGND
LM3242
www.ti.com
SNOSB48E – OCTOBER 2011 – REVISED AUGUST 2015
5 Pin Configuration and Functions
YFQ Package
9-Pin DSBGA
Top View (left); Bottom View (right)
Pin Functions
PIN
TYPE
DESCRIPTION
NUMBER
NAME
Voltage control analog input. VCON controls VOUT in PWM and ECO modes. VCON may also
A1
VCON
A/I
be used to force bypass condition by setting VCON > VIN/2.5.
A2
SGND
G
Signal ground for analog and control circuitry.
A3
PGND
G
Power ground for the power MOSFETs and gate drive circuitry
Enable Input. Set this digital input high for normal operation. For shutdown, set low. Do not
B1
EN
D/I
leave EN pin floating.
B2
NC
Do not connect to PGND directly — Internally connected to SGND.
Switching node connection to the internal PFET switch and NFET synchronous rectifier.
B3
SW
P/O
Connect to an inductor with a saturation current rating that exceeds the maximum Switch Peak
Current Limit specification of the LM3242.
Bypass Enable input. Set this digital input high to force bypass operation. For normal operation
C1
BPEN
D/I
with automatic bypass, set low or connect to ground. Do not leave this pin floating.
Feedback analog input and bypass FET output. Connect to the output at the output filter
C2
FB
A
capacitor.
C3
VIN
P/I
Voltage supply input for SMPS converter.
Copyright © 2011–2015, Texas Instruments Incorporated
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