ADP2106:  1.5 Amp Synchronous, Step-Down DC-to-DC Converter

The ADP2105/ADP2106/ADP2107 are low quiescent current, synchronous, step-down dc-to-dc converters in a compact 4 mm × 4 mm LFCSP_VQ package. At medium to high load currents, these devices use a ...More

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ADP2106:  1.5 Amp Synchronous, Step-Down DC-to-DC Converter

Product Description

The ADP2105/ADP2106/ADP2107 are low quiescent current, synchronous, step-down dc-to-dc converters in a compact 4 mm × 4 mm LFCSP_VQ package. At medium to high load currents, these devices use a current-mode, constant-frequency pulse-width modulation (PWM) control scheme for excellent stability and transient response. To ensure the longest battery life in portable applications, the ADP2105/ADP2106/ADP2107 use a pulse frequency modulation (PFM) control scheme under light load conditions that reduces switching frequency to save power.

The ADP2105/ADP2106/ADP2107 run from input voltages of 2.7 V to 5.5 V, allowing single Li+/Li− polymer cell, multiple alkaline/NiMH cells, PCMCIA, and other standard power sources. The output voltage of ADP2105/ADP2106/ADP2107-ADJ is adjustable from 0.8 V to the input voltage, whereas the ADP2105/ADP2106/ADP2107-xx are available in preset output voltage options of 3.3 V, 1.8 V, 1.5 V, and 1.2 V. Each of these variations is available in three maximum current levels, 1 A (ADP2105), 1.5 A (ADP2106), and 2 A (ADP2107). The power switch and synchronous rectifier are integrated for minimal external part count and high efficiency. During logic-controlled shutdown, the input is disconnected from the output, and it draws less than 0.1 μA from the input source. Other key features include undervoltage lockout to prevent deep battery discharge and programmable soft start to limit inrush current at startup.

Applications

  • Mobile handsets
  • Portable media players
  • PDAs and palmtop computers
  • Telecommunication/networking equipment
  • Set top boxes
  • Audio/video consumer electronics

    • Data Sheet, Rev. A, 3/07

    Features

    • Extremely high 97% peak efficiency
    • Internal primary and synchronous switches
    • Fixed Frequency, Peak Current-Mode PWM at medium and high loads
    • PFM operation at light loads for high efficiency
    • Ultralow quiescent current: 30μA (max)
    • Internally Set Current Limit
    • Internal Thermal Protection
    • 0.1 μA shutdown supply current (typ)
    • Maximum duty cycle 100%
    • Smoothly transitions into low dropout (LDO) mode
    • Small 16-lead 4 mm × 4 mm LFCSP_VD package
    • Optimized for small ceramic output capacitors

    Diagrams

    ADP2106 Diagram
    Typical Application Circuit for ADP2106

    Характеристики

    Vin Range 2.7V-5.5V
    Buck Yes
    Iout (max) 1.5A
    Supply Current (max) 30µA
    Switching Frequency 1.2 MHz
    Vout Preset Options 1.2V,1.5V,1.8V,3.3V
    Vout Adj Options 0.8V to Vin

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    Получать уведомление о новинках
    Part# Vin Range Vout Preset Options Vout Adj Options Iout (max) Isw (Peak) Supply Current (max) Switching Frequency Step Down Step Up Inverting Pkg Product Description Price* (1000-4999) Pos Supply
    ADP1111 2V-30V 12.0V, 3.3V, 5.0V 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
    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 $1.14 +2.5 to +5.5
    ADP1610 2.5V-5.5V --- Vin to 12V 1.2A 1.2A 600µA 700 kHz or 1.2 MHz - Yes - MSOP-8 1.2 MHz DC-DC Step-Up (Boost) Switching Converter w/ Integrated Power Switch $1.27 +2.5 to +5.5
    ADP2102 2.7V-5.5V 0.8V, 1.0V, 1.25V, 1.2V, 1.375V, 1.5V, 1.875V, 1.8V 0.8V to 3.3V 0.6A - 99µA 3 MHz Yes - - 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 - 300µA 550 kHz Yes - - MSOP-8 500 mA PWM Step-Down DC-DC Converter with Synchronous Rectifier $2.65 +2.7 to +5.5
    ADP2105 2.7V-5.5V 1.2V, 1.5V, 1.8V, 3.3V 0.8V to Vin 1A - 30µA 1.2 MHz Yes - - LFCSP-16 1A Synchronous Step-Down DC-DC Converter $1.13 +2.7 to +5.5
    ADP2106 2.7V-5.5V 1.2V, 1.5V, 1.8V, 3.3V 0.8V to Vin 1.5A - 30µA 1.2 MHz Yes - - LFCSP-16 1.5A Synchronous Step-Down DC-DC Converter $1.25 +2.7 to +5.5
    ADP2107 2.7V-5.5V 1.2V, 1.5V, 1.8V, 3.3V 0.8V to Vin 2A - 30µA 1.2 MHz Yes - - LFCSP-16 2A Synchronous Step-Down DC-DC Converter $1.32 +2.7 to +5.5
    ADD8754 3V-5.5V --- 1.21V to 20V -