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RT8010PQW,1.5MHz, 1A, 高效PWM降压DC/DC

RT8010PQW】1.5MHz, 1A, 高效PWM降压DC/DC

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RT8010PQW 详细介绍

RT8010PQW General Description

The RT8010PQW/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 RT8010PQW/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 RT8010PQW/A enters Low Dropout mode when normal PWM cannot provide regulated output voltage by continuously turning on the upper P-MOSFET. RT8010PQW/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.

 RT8010PQW Ordering Info

Note :
Richtek Pb-free and Green products are :
► RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.
► Suitable for use in SnPb or Pb-free soldering processes.

 RT8010PQWFeatures

• +2.5V to +5.5V Input Range
• Output Voltage (Adjustable Output From 0.6V to VIN)
  ♦ RT8010 : 1.0V, 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

 RT8010PQW Application

• Mobile Phones
• Personal Information Appliances
• Wireless and DSL Modems
• MP3 Players
• Portable Instruments

 RT8010PQWPin Configurations

(TOP VIEW)
WQFN-16L 3x3 (RT8010A)
WDFN-6L 2x2 (RT8010)

 RT8010PQWTypical Applications Circuit

Figure 1. Fixed Voltage Regulator
with R2 = 300kΩ to 60kΩ so the IR2 = 2μA to 10μA,
and (R1 x C1) should be in the range between 3x10-6 and 6x10-6 for component selection.
Figure 2. Adjustable Voltage Regulator