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LMK325BJ226ML Datasheet(PDF) 2 Page - Richtek Technology Corporation

Part # LMK325BJ226ML
Description  5A, 2MHz, High Efficiency Synchronous Step-Down Converter
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

LMK325BJ226ML Datasheet(HTML) 2 Page - Richtek Technology Corporation

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RT8072
2
DS8072-01
November 2012
www.richtek.com
©
Copyright
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Pin No.
SOP-8
(Exposed Pad)
WDFN-12L 3x3
Pin Name
Pin Function
1
1
COMP
Compensation Node.
2
--
GND
Analog Ground.
3
4
EN
Chip Enable. Externally pulled high to enable and pulled low to
disable this chip, and it is internally pulled up to high when the
pin is floating.
4
5, 6
VIN
Power Input.
5
7
BOOT
Bootstrap Supply for High Side Gate Driver.
6
8, 9, 10
LX
Switch Node.
7
11
RT
Frequency Setting.
8
12
FB
Feedback Voltage Input.
9
13
(Exposed Pad)
PGND
Power Ground. The exposed pad must be shouldered to a
large PCB and connected to PGND for maximum power
dissipation.
--
2
PGOOD
Power Good Indicator with Open Drain Output. It is high
impedance when the output voltage is regulated. It is internally
pulled low when the chip is shutdown, thermal shutdown or
VIN is under UVLO threshold.
--
3
SS
Soft-Start Control.
Functional Pin Description
Pin Configurations
(TOP VIEW)
SOP-8 (Exposed Pad)
WDFN-12L 3x3
COMP
GND
EN
VIN
FB
RT
BOOT
LX
PGND
2
3
4
5
6
7
8
9
COMP
PGOOD
VIN
EN
FB
RT
LX
LX
LX
SS
VIN
BOOT
11
10
9
1
2
3
4
5
12
67
8
13


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