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1.5MHz, 1A, High Efficiency PWM Step-Down DC-DC Converter

RT8010/RT8010A

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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.

Applications

  • Mobile Phones
  • Personal Information Appliances
  • Wireless and DSL Modems
  • MP3 Players
  • Portable Instruments
  • LCD TV
Key Spec.
RT8010 RT8010A
Status Active Active
Vin (min) (V) 2.5 2.5
Vin (max) (V) 5.5 5.5
Number of Outputs 1 1
Vout (min) (V) 0.6 0.6
Vout (max) (V) 5.5 5.5
Output Adj. Method Fixed Fixed;Resistor
Iout (max) (A) 1 1
Current Limit (typ) (A) 2.1 2.1
Freq (typ) (kHz) 1500 1500
Ext Sync No No
Ron_HS (typ) (mOhm) 280 280
Ron_LS (typ) (mOhm) 250 250
Iq (typ) (mA) 0.05 0.05
Features 100% Duty Cycle;Current Mode Control;Enable Input;Internal Compensation;OCP;PSM;Stable with Ceramic Capacitor 100% Duty Cycle;Current Mode Control;Enable Input;Force PWM;Internal Compensation;OCP;Stable with Ceramic Capacitor
Package Type WDFN2x2-6 WQFN3x3-16
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
Datasheet
TitleLast UpdateShareDownload
1.5MHz, 1A, High Efficiency PWM Step-Down DC-DC Converter2006/08/25
Reliability
Title Last Update ShareDownload
1.5MHz, 1A, High Efficiency PWM Step-Down DC-DC Converter 2015/05/19
Videos
TitleLast UpdateShareViews
How to estimate control loop bandwidth from the transient response time?2017/03/30 688
Reference Design
TitleLast UpdateShareDownload
Richtek Load Transient Tool2019/01/09
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT8010GQWWDFN2x2-62500 Request Buy from Distributor
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