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LM2840 Datasheet(PDF) 2 Page - Texas Instruments

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Part # LM2840
Description  Input Step-Down DC/DC Regulator in Thin SOT
PDF  20 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LM2840 Datasheet(HTML) 2 Page - Texas Instruments

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CB
1
2
3
4
5
6
LM2840/1/2
GND
FB
SW
PIN 1 ID
VIN
SHDN
LM2841, LM2842
SNVS540H – MARCH 2009 – REVISED APRIL 2013
www.ti.com
Connection Diagram
Top View
Figure 1. SOT 6 Lead
See Package Number DDC (R-PDSO-G6)
PIN DESCRIPTIONS
Pin
Name
Function
1
CB
SW FET gate bias voltage. Connect CBOOT cap between CB and SW.
2
GND
Ground connection.
Feedback pin: Set feedback voltage divider ratio with VOUT = VFB (1+(R1/R2)). Resistors should be
3
FB
in the 100-10K range to avoid input bias errors.
4
SHDN
Logic level shutdown input. Pull to GND to disable the device and pull high to enable the device. If
this function is not used tie to VIN or leave open.
5
VIN
Power input voltage pin: 4.5V to 42V normal operating range.
6
SW
Power FET output: Connect to inductor, diode, and CBOOT cap.
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 © 2009–2013, Texas Instruments Incorporated
Product Folder Links: LM2841 LM2842



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