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LM26420 数据表(PDF) 5 Page - Texas Instruments

部件名 LM26420
功能描述  Dual 2-A Automotive-Qualified, High-Efficiency Synchronous DC-DC Converter
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

LM26420 数据表(HTML) 5 Page - Texas Instruments

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LM26420, LM26420-Q0, LM26420-Q1
www.ti.com
SNVS579K – FEBRUARY 2009 – REVISED APRIL 2016
Product Folder Links: LM26420 LM26420-Q0 LM26420-Q1
Submit Documentation Feedback
Copyright © 2009–2016, Texas Instruments Incorporated
Pin Functions 20-Pin HTSSOP
PIN
TYPE
DESCRIPTION
NUMBER
NAME
1
VINC
A
Input supply for control circuitry.
2
EN1
A
Enable control input. Logic high enable operation for Buck 1. Do not allow this pin to float or
be greater than VIN + 0.3 V.
3, 4
VIND1
A
Power Input supply for Buck 1.
5
SW1
P
Output switch for Buck 1. Connect to the inductor.
6,7
PGND1
G
Power ground pin for Buck 1.
8
FB1
A
Feedback pin for Buck 1. Connect to external resistor divider to set output voltage.
9
PG1
G
Power Good Indicator for Buck 1. Pin is connected through a resistor to an external supply
(open drain output).
10, 11, DAP
Die Attach Pad
Connect to system ground for low thermal impedance, but it cannot be used as a primary
GND connection.
12
PG2
G
Power Good Indicator for Buck 2. Pin is connected through a resistor to an external supply
(open drain output).
13
FB2
A
Feedback pin for Buck 2. Connect to external resistor divider to set output voltage.
14, 15
PGND2
G
Power ground pin for Buck 2.
16
SW2
P
Output switch for Buck 2. Connect to the inductor.
17, 18
VIND2
A
Power Input supply for Buck 2.
19
EN2
A
Enable control input. Logic high enable operation for Buck 2. Do not allow this pin to float or
be greater than VIN + 0.3 V.
20
AGND
G
Signal ground pin. Place the bottom resistor of the feedback network as close as possible to
pin.


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