®
RT8010/A
1.5MHz, 1A, High Efficiency PWM Step-Down DC-DC Converter
General Description
The RT8010/A is a high efficiency Pulse-Width-Modulated
(PWM) step-down DC-DC converter. Capable of delivering
1A output current over a wide input voltage range from
2.5V to 5.5V, the RT8010/A is ideally suited for portable
electronic devices that are powered from 1-cell Li-ion
battery or from other power sources such as cellular
phones, PDAs and hand-held devices.
Two operating modes are available including : PWM/Low-
Dropout autoswitch and shutdown modes. The Internal
synchronous rectifier with low RDS(ON) dramatically reduces
conduction loss at PWM mode. No external Schottky
diode is required in practical application.
The RT8010/A enters Low Dropout mode when normal
PWM cannot provide regulated output voltage by
continuously turning on the upper P-MOSFET. The
RT8010/A enter shut-down mode and consumes less than
0.1μA when EN pin is pulled low.
The switching ripple is easily smoothed-out by small
package filtering elements due to a fixed operating
frequency of 1.5MHz. This along with small WDFN-6L 2x2
and WQFN-16L 3x3 package provides small PCB area
application. Other features include soft start, lower internal
reference voltage with 2% accuracy, over temperature
protection, and over current protection.
Features
2.5V to 5.5V Input Range
Output Voltage (Adjustable Output From 0.6V to VIN)
RT8010 : 1V, 1.2V, 1.5V, 1.6V, 1.8V, 2.5V and 3.3V
Fixed/Adjustable Output Voltage
RT8010A Adjustable Output Voltage Only
1A Output Current
95% Efficiency
No Schottky Diode Required
1.5MHz Fixed-Frequency PWM Operation
Small 6-Lead WDFN and 16-Lead WQFN Package
RoHS Compliant and 100% Lead (Pb)-Free
Applications
Mobile Phones
Personal Information Appliances
Wireless and DSL Modems
MP3 Players
Portable Instruments
Pin Configuration
(TOP VIEW)
IC 1
EN 2
VIN 3
16 15 14 13
GND 1
12 VIN
6 FB/VOUT
GND 2
5 GND
GND 3
7 4 LX
FB/VOUT 4
11 VIN
10 VIN
17
9 VIN
5678
WDFN-6L 2x2 (RT8010)
WQFN-16L 3x3 (RT8010A)
Copyright ©2019 Richtek Technology Corporation. All rights reserved.
DS8010/A-12 March 2019
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1
