ADP2107ACPZ-R7 Integrated Circuits (ICs)

Due to market price fluctuations,if you need to purchase or consult the price.You can contact us or emial to us:   sales@allicdata.com

1. DESCRIPTION

The ADP2107ACPZ-R7 are low quiescent current, synchronous, step-down dc-to-dc converters in a compact 4 mm × 4 mm LFCSP 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 ADP2107ACPZ-R7 use a pulse frequency modulation (PFM) control scheme under light load conditions that reduces switching frequency to save power. The ADP2107ACPZ-R7 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 ADP2107ACPZ-R7 is adjustable from 0.8 V to the input voltage (indicated by ADJ), whereas the ADP2107ACPZ-R7 are available in preset output voltage options of 3.3 V, 1.8 V, 1.5 V, and 1.2 V (indicated by x.x 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.

2. FEATURES

    1. Extremely high 97% efficiency

    2. Ultralow quiescent current: 20 μA

    3. 1.2 MHz switching frequency

    4. 0.1 μA shutdown supply current

    5. Maximum load current

        - ADP2107: 2 A

    6. Input voltage: 2.7 V to 5.5 V

    7. Output voltage: 0.8 V to VIN

    8. Maximum duty cycle: 100%

    9. Smoothly transitions into low dropout (LDO) mode

  10. Internal synchronous rectifier

  11. Small 16-lead 4 mm × 4 mm LFCSP package

  12. Optimized for small ceramic output capacitors

  13. Enable/shutdown logic input

  14. Undervoltage lockout

  15. Soft start

  16. Supported by ADIsimPower™ design tool

3. APPLICATIONS

    1. Mobile handsets

    2. PDAs and palmtop computers

    3. Telecommunication/networking equipment

    4. Set top boxes

    5. Audio/video consumer electronics