RT2862
Pin Configurations
(TOP VIEW)
SW
BOOT
EN
GND
2
3
4
8
VIN
RT
COMP
FB
GND
9
7
6
5
SOP-8 (Exposed Pad)
Functional Pin Description
Pin No.
1
2
3
4,
9 (Exposed Pad)
5
Pin Name
SW
BOOT
EN
GND
FB
Pin Function
Switch Node. Connect to external L-C filter.
Bootstrap Supply for the High-Side MOSFET. Connect a 100nF or greater
capacitor between the BOOT and SW pins.
Enable Control Input. A logic-high enables the converter; a logic-low forces the
device into shutdown mode.
Ground. The exposed pad must be soldered to a large PCB and connected to
GND for maximum thermal dissipation.
Feedback Voltage Input. This pin is used to set the output voltage of the
converter to regulate to the desired value via an resistive divider.
Compensation Node. COMP is used to compensate the regulation control loop.
Connect a R-C network from the COMP to GND. In some cases, an additional
capacitor from COMP to GND is required.
Switching Frequency Setting. Connect an external resistor to set the switching
frequency from 300kHz to 1MHz.
Power Input. The input voltage range is from 4.5V to 36V. Must bypass with a
suitable large ceramic capacitor at this pin.
6
COMP
7
8
RT
VIN
Copyright
©
2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
2
DS2862-02 January 2018
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
