content here.
content here.

ADP3051:  500 mA Synchronous Buck Switching Regulator

The ADP3051 is a high frequency, general purpose synchronous buck switching regulator capable of 500 mA continuous output current in an MSOP-8 package. It provides high efficiency, excellent dynamic response, and is very simple to use. The switching frequency is nominally 600 kHz - synchronizable to 750 kHz - and allows for small, cost-saving external inductive and capacitive components. The ...続きを見る

ADP3051:  500 mA Synchronous Buck Switching Regulator

製品概要

The ADP3051 is a high frequency, general purpose synchronous buck switching regulator capable of 500 mA continuous output current in an MSOP-8 package. It provides high efficiency, excellent dynamic response, and is very simple to use. The switching frequency is nominally 600 kHz - synchronizable to 750 kHz - and allows for small, cost-saving external inductive and capacitive components. The current mode control loop is simple to compensate. Featuring a patented tri-mode, variable-frequency control technique, it operates in normal PWM current mode under heavy loads, and saves energy at lighter loads by switching automatically into a two level power-saving mode. Soft start and shutdown are integrated completely on chip, as is the power switch.

The ADP3051 supports output voltages as low as 0.8 V, while operating from a 2.5 to 5.5 V input, and is optimized for portable consumer and communications applications where long battery life and low power consumption are required. The ADP3051's low-voltage operation and 3 percent output regulation accuracy over line, load and temperature make it ideal for today's low voltage rails, providing the optimal solution for delivering power precisely and efficiently with minimal printed circuit board area.

Applications

  • PDAs and Palmtop Computers
  • Consumer Electronics
  • Portable Instruments

    • リソース＆ツール

    プロジェクト・フェーズは何ですか？　LEAD THE WAY ADVISOR™ ツールをお試しください BETA
    • 600 kHz PWM Frequency
    • Frequency Synchronizable up to 750 kHz
    • Output Voltage Range: 0.8 V to 5 V
    • Tri-mode Operation Enables Higher Efficiency
    • Automatic PWM to Variable Frequency Control at Light Load
    • Fully Integrated 600 mA Power Switch
    • Fully Integrated Soft Start and Shutdown
    • 3% Output Regulation Accuracy Over Line, Load, and Temp
    • Simple Loop Compensation
    • Space Saving MSOP-8 Package
    • Small Inductor and MLC Capacitors
    • Undervoltage Lockout
    • Vin Range: 2.7V-5.5V
    • Boost: No
    • Buck: Yes
    • Inverting: No
    • Iout (max): 0.5A
    • Supply Current : 300µA
    • Switching Frequency: 550 kHz
    • Vout Preset Summary: ---
    • Vout Adj Options: 0.8V to 5.5V

    Typical Application Circuit Diagram for ADP3051

    類似製品

    arrow 製品一覧を全てを表示
    Part# Vin Range Vout Preset Summary Vout Adj Options Iout (max) Isw (Peak) Supply Current Switching Frequency Step Down Step Up Inverting Pkg Product Description Price* (1000-4999) Pos Supply
    ADP1612 1.8V-5.5V --- Vin to 20V 1.4A 1.4A 900µA 650 KHz, 1.3 MHz No Yes No MSOP-8 650 kHz /1.3 MHz Step-Up DC-to-DC Converter $0.78 +1.8 to +5.5
    ADP1613 2.5V-5.5V --- Vin to 20V 2A 2A 900µA 650 kHz, 1.3 MHz No Yes No MSOP-8 650 kHz /1.3 MHz Step-Up DC-to-DC Converter $0.70 +2.5 to +5.5
    ADP2109 2.3V-5.5V 4 Options/1.0V-1.8V --- 0.6A 1.3A 18µA 3 MHz Yes No No WLCSP-5 Compact 600 mA, 3 MHz, Step-Down Converter w/ Output Discharge $0.70 +2.3 to +5.5
    ADP2121 2.3V-5.5V 4 Options/1.8V-1.875V --- 0.5A 1A 36µA 6 MHz Yes No No WLCSP-6 600 mA, 6 MHz, Synchronous, Step-Down, DC-to-DC Converter $0.80 +2.3 to +5.5
    ADP1111 2V-30V 3 Options/3.3V-12V 1.2V to 30V, 1.2V to Vin 1.5A 1.5A 110µA 70 kHz Yes Yes Yes Plastic DIP-8, SOIC-8 Micropower Step Up/Down/Inverting Switching Regulator; Adjustable or Fixed 3.3V, 5V, 12V $2.05 +2 to +30
    ADP2108 2.3V-5.5V 11 Options/1V-3.3V --- 0.6A 1.3A 19µA 3 MHz Yes Yes No WLCSP-5 600 mA, 3 MHz Fast Transient Synchronous Step-Down Converter $0.60 +2.3 to +5.5
    ADP2504 2.3V-5.5V 6 Options/2.8V-5V --- 1A 1.3A 38µA 2.5 MHz Yes Yes No LFCSP-10 1 Ampere, 2.5 MHz Buck-Boost DC-to-DC Converter $1.40 +2.3 to +5.5
    ADP1611 2.5V-5.5V - Vin to 20V 1.2A 1.2A 600µA 1.2 MHz - Yes - MSOP-8 20 V,1.2 MHz Step-Up DC-to-DC Switching Converter - +2.5 to +5.5
    ADP1610 2.5V-5.5V - Vin to 12V 1.2A 1.2A 600µA 700 kHz or 1.2 MHz No Yes No MSOP-8 1.2 MHz DC-DC Step-Up (Boost) Switching Converter w/ Integrated Power Switch $1.12 +2.5 to +5.5
    ADP2102 2.7V-5.5V 8 Options/0.8V-1.875V 0.8V to 3.3V 0.6A 1A 99µA 3 MHz Yes No No LFCSP-8 3 MHz Synchronous Step-Down DC-to-DC Converter $1.23 +2.7 to +5.5
    ADP3051 2.7V-5.5V --- 0.8V to 5.5V 0.5A 1A 300µA 550 kHz Yes No No MSOP-8 500 mA PWM Step-Down DC-DC Converter with Synchronous Rectifier - +2.7 to +5.5
    ADP2105 2.7V-5.5V 4 Options/1.2V-3.3V 0.8V to Vin 1A 1.5A 30µA 1.2 MHz Yes No No LFCSP-16 1A Synchronous Step-Down DC-DC Converter $1.13 +2.7 to +5.5
    ADP2106 2.7V-5.5V 4 Options/1.2V-3.3V 0.8V to Vin 1.5A 2.25A 30µA 1.2 MHz Yes No No LFCSP-16 1.5A Synchronous Step-Down DC-DC Converter $1.25 +2.7 to +5.5
    ADP2107 2.7V-5.5V 4 Options/1.2V-3.3V 0.8V to Vin 2A 2.9A 30µA 1.2 MHz Yes No No LFCSP-16 2A Synchronous Step-Down DC-DC Converter $1.32 +2.7 to +5.5
    ADP2503 2.3V-5.5V 6 Options/2.8V-5V --- 0.6A 1A 38µA 2.5 MHz Yes Yes No LFCSP-10 600 mA, 2.5 MHz Buck-Boost DC-to-DC Converter $1.30 +2.8 to +5.5
    ADP3050 3.6V-30V 2 Options/3.3V & 5V 1.25V to 12V 1A 1.5A 1.5mA 200 kHz Yes No No SOIC-8 200 kHz, 1 Amp, High-Voltage Step-Down Switching Regulator $1.81 +3.6 to +30
    back to top

    Sorted by Min Vin (Ascending), then Max Vin (Ascending)


    * The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    ** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.