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LMR23625CFDDAR Datasheet(PDF) 3 Page - Texas Instruments

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Part # LMR23625CFDDAR
Description  SIMPLE SWITCHER 36 V, 2.5 A Synchronous Step-Down Converter
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LMR23625CFDDAR Datasheet(HTML) 3 Page - Texas Instruments

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EN/SYNC
AGND
VIN
PGND
SW
BOOT
VCC
FB
Thermal Pad
(9)
1
2
3
4
5
6
7
8
3
LMR23625
www.ti.com
SNVSAH3B – DECEMBER 2015 – REVISED APRIL 2017
Product Folder Links: LMR23625
Submit Documentation Feedback
Copyright © 2015–2017, Texas Instruments Incorporated
(1)
I = Input, O = Output, G = Ground.
5 Pin Configuration and Functions
DDA Package
8-Pin HSOIC
Top View
Pin Functions
PIN
I/O (1)
DESCRIPTION
NAME
NO.
SW
1
O
Switching output of the regulator. Internally connected to both power MOSFETs. Connect to
power inductor.
BOOT
2
O
Boot-strap capacitor connection for high-side driver. Connect a high quality 470 nF capacitor
from BOOT to SW.
VCC
3
O
Internal bias supply output for bypassing. Connect bypass capacitor from this pin to AGND.
Do not connect external loading to this pin. Never short this pin to ground during operation.
FB
4
I
Feedback input to regulator, connect the feedback resistor divider tap to this pin.
EN/SYNC
5
I
Enable input to regulator. High = On, Low = Off. Can be connected to VIN. Do not float.
Adjust the input under voltage lockout with two resistors. See the Enable and Adjusting
Under voltage Lockout section. The internal oscillator can be synchronized to an external
clock by coupling a positive pulse into this pin through a small coupling capacitor. See
Enable/Sync for detail.
AGND
6
G
Analog ground pin. Ground reference for internal references and logic. Connect to system
ground.
VIN
7
I
Input supply voltage.
PGND
8
G
Power ground pin, connected internally to the low side power FET. Connect to system
ground, PAD, AGND, ground pins of CIN and COUT. Path to CIN must be as short as possible.
PAD
9
G
Low impedance connection to AGND. Connect to PGND on PCB. Major heat dissipation
path of the die. Must be used for heat sinking to ground plane on PCB.


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