RT6242A/B
Pin Configurations
(TOP VIEW)
RLIM
SW
SW
EN
Marking Information
RT6242AHGQUF
7D= : Product Code
16
15
14
13
12
11
10
9
AGND
FB
PVCC
RT
1
2
3
4
5
6
7
SW
SW
SW
BOOT
7D=YM
DNN
YMDNN : Date Code
RT6242ALGQUF
7C= : Product Code
8
UQFN-16JL 3x3 (FC)
PGOOD
GND
7C=YM
DNN
VIN
SS
YMDNN : Date Code
RT6242BHGQUF
78= : Product Code
78=YM
DNN
YMDNN : Date Code
RT6242BLGQUF
75= : Product Code
75=YM
DNN
YMDNN : Date Code
Functional Pin Description
Pin No.
1
2
3
4
5
6
7
8
9
10 to 14
15
16
Pin Name
AGND
FB
PVCC
RT
SS
VIN
GND
PGOOD
BOOT
SW
EN
RLIM
Analog Ground.
Feedback Voltage Input. It is used to regulate the output of the converter to a set
value via an external resistive voltage divider. The feedback reference voltage is
0.7V typically.
Internal Regulator Output. Connect a 1F capacitor to GND to stabilize output
voltage.
An External Timing Resistor Adjusts the Switching Frequency of the Device.
Soft-Start Time Setting. An external capacitor should be connected between this
pin and GND.
Power Input. The input voltage range is from 4.5V to 18V. Must bypass with a
suitably large (10F x 2) ceramic capacitor.
Ground.
Power Good Indicator Open-Drain Output.
Bootstrap. This capacitor is needed to drive the power switch's gate above the
supply voltage. It is connected between SW and BOOT pins to form a floating
supply across the power switch driver. A 0.1F capacitor is recommended for use.
Switch Node. Connect this pin to an external L-C filter.
Enable Control Input. A logic-high enables the converter; a logic-low forces the IC
into shutdown mode reducing the supply current to less than 10A.
An External Resistor Adjusts the Current Limit of the Device.
Pin Function
Copyright
©
2016 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
2
DS6242A/B-05 April 2016
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
