DS6203B Datasheet, PDF (2/22 Pages) Richtek Technology Corporation – 5A, 18V, 700kHz ACOTTM Synchronous Step-Down Converter with VID Control

RT6203B
Marking Information
RT6203BHGQW
2H= : Product Code
2H=YM
DNN
YMDNN : Date Code
RT6203BLGQW
2G=YM
DNN
2G= : Product Code
YMDNN : Date Code
Ordering Information
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
H : Hiccup
L : Latch-off
PWM/PSM Mode
B : PWM Mode
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.
Functional Pin Description
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)
13, 14, 15
PGND
SW
Power ground. The exposed pad must be soldered to a large PCB and
connected to GND for maximum thermal dissipation.
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.
Bootstrap supply for high-side gate driver. This capacitor is needed to drive
20
BOOT
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.
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DS6203B-00 September 2016