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RT6203B Datasheet(PDF) 2 Page - Richtek Technology Corporation

Part No. RT6203B
Description  5A, 18V, 700kHz ACOTTM Synchronous Step-Down Converter with VID Control
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Maker  RICHTEK [Richtek Technology Corporation]
Homepage  http://www.richtek.com
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RT6203B
2
DS6203B-01 July 2017
www.richtek.com
©
Copyright 2017 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Pin No.
Pin Name
Pin Function
1
PVCC
5V power supply output. Connect a capacitor (typical 1
F) to AGND.
2
PGOOD
Open-drain power good indicator output.
3
A0
LSB of chip address. Tie to GND for 0, pull high for 1.
4
A1
LSB+1 of chip address. Tie to GND for 0, pull high for 1.
5
SCL
I2C clock input.
6
SDA
I2C data input.
7
SS
Soft-start time setting. Connect an external capacitor to GND.
8
FB
Feedback voltage input. Connect to output voltage feedback resistor
divider.
9
VS
Output voltage controlled by VID.
10
AGND
Analog ground.
11, 12,
21 (Exposed Pad)
PGND
Power ground. The exposed pad must be soldered to a large PCB and
connected to GND for maximum thermal dissipation.
13, 14, 15
SW
Switch node.
16, 17
VIN
Power input. Connect to high-side MOSFET Drain.
18
VCC
Power input for internal circuit.
19
EN
Enable control Input.
20
BOOT
Bootstrap supply for high-side gate driver. This capacitor is needed to drive
the power switch's gate above the supply voltage. It is connected between
the SW and BS pins to form a floating supply across the power switch
driver. A 0.1
F capacitor is recommended for use.
Marking Information
Functional Pin Description
Note :
Richtek products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Ordering Information
2G=YM
DNN
2G= : Product Code
YMDNN : Date Code
RT6203B
Package Type
QW : WQFN-20L 4x4 (W-Type)
(Exposed Pad-Option 1)
Lead Plating System
G : Green (Halogen Free and Pb Free)
UVP Trim Operation
L : Latch-off
PWM/PSM Mode
B : PWM Mode




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