ADP1720:  50 mA, High Voltage, Micropower Linear Regulator

The ADP1720 is a high voltage, micropower, low dropout linear regulator. Operating over a very wide input voltage range of 4 V to 28 V, the ADP1720 can provide up to 50 mA of output current. With ...More

ADP1720:  50 mA, High Voltage, Micropower Linear Regulator

Product Description

The ADP1720 is a high voltage, micropower, low dropout linear regulator. Operating over a very wide input voltage range of 4 V to 28 V, the ADP1720 can provide up to 50 mA of output current. With just 28 μA of quiescent supply current and a micropower shutdown mode, this device is ideal for applications that require low quiescent current.

The ADP1720 is available in fixed output voltages of 3.3 V and 5.0 V. An adjustable version is also available, which allows the output to be set anywhere between 1.225 V and 5.0 V. An enable function that allows external circuits to turn on and turn off the ADP1720 output is available. For automatic startup, the enable (EN) pin can be connected directly to the input rail.

The ADP1720 is optimized for stable operation with small 1 μF ceramic output capacitors, allowing for good transient performance while occupying minimal board space.

The ADP1720 operates from –40°C to +125°C and uses current limit protection and thermal overload protection circuits to prevent damage to the device in adverse conditions.

Available in a small thermally enhanced MSOP package, the ADP1720 provides a compact solution with low thermal resistance.

Applications

  • DC-to-DC post regulation
  • PCMCIA regulation
  • Keep-alive power in portable equipment
  • Industrial applications

    • Data Sheet, Rev. A, 7/07

    Features

    • Wide input voltage range: 4 V to 28 V
    • Maximum output current: 50 mA
    • Low light load current:
      28 μA at 0 μA load
      35 μA at 100 μA load
    • Low shutdown current: 0.7 μA
    • Low dropout voltage: 275 mV @ 50 mA load
    • Initial accuracy: ±0.5%
    • Accuracy over line, load, and temperature: ±2%
    • Stable with small 1μF ceramic output capacitor
    • Fixed 3.3 V and 5.0 V output voltage options
    • Adjustable output voltage option: 1.225 V to 5.0 V
    • Current limit and thermal overload protection
    • Logic controlled enable

    Diagrams

    ADP1720 Diagram
    Functional Block Diagram for ADP1720

    技术指标

    Vout Preset Voltages (V) 3.3,5
    Vin Range (Vmin to Vmax) 4.0 to 28
    Iout (max) 50mA
    Supply Current (max) 2.115mA
    V-dropout@Rated Iout (mV) 480mV
    Tot Accuracy (±%) 2%
    Package MSOP-8
    # of Outputs 1
    Line Regulation n/a
    Load Regulation n/a
    Shutdown Yes
    Operating Temp Range -40 to +125

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    Part# Vout Preset Vout Adj Range Iout (max) Vin Range (Vmin to Vmax) Supply Current (max) Vdropout @ Rated Iout Vout Setpoint Acc Vout Total Acc Shutdown Product Description Pos Supply Operating Temp Range Price* (1000-4999)
    ADP120 16 Presets From 1.2-3.3V n/a 100mA 2.3 to 5.5 35µA 60mV to 80mV 1% @ Iout = 10mA 2% @ 10 mA - Iout max Yes 100 mA, Low Quiescent Current, CMOS Linear Regulator +2.3 to +5.5 -40 to +125 $0.26
    ADP121 16 Presets From 1.2-3.3V n/a 150mA 2.5 to 5.5 40µA 90mV to 120mV 1% @ Iout = 10mA 2% @ 10 mA - Iout max Yes 150 mA, Low Quiescent Current, CMOS Linear Regulator in 5-Lead TSOT +2.3 to +5.5 -40 to +125 $0.27
    ADP130 31 Presets From 0.8-3.0V n/a 350mA 1.2 to 3.6 220µA 70mV 1% @ Iout = 10mA 2% @ 1 mA - Iout max Yes 350 mA, Low VIN, Low Quiescent Current, CMOS Linear Regulator +1.2 to +3.6 -40 to +125 $0.33
    ADP1707 16 Presets From 0.75-3.3V, With Tracking n/a 1A 2.5 to 5.5 1.55mA 345mV to 365mV 1% @ Iout = 10mA 1.5% @ 0.1 mA - Iout max Yes 1 A, Low Dropout, CMOS Linear Regulator +2.5 to +5.5 -40 to +125 $1.12
    ADP1708 n/a 0.8V to 5.0V 1A 2.5 to 5.5 1.55mA 345mV to 365mV n/a 1.5% @ 0.1 mA - Iout max Yes 1 A, Low Dropout, CMOS Linear Regulator +2.5 to +5.5 -40 to +125 $1.09
    ADP1740 7 Presets--0.75 to 2.5V n/a 2A 1.6 to 3.6 1.8mA 350mV 1% @ Iout= 100mA 2% @ 1 mA - Iout max Yes 2 A, Low Dropout, CMOS Linear Regulator +1.6 to +3.6 -40 to +125 $1.20
    ADP1741 n/a 0.75V to 3.0V 2A 1.6 to 3.6 1.8mA 350mV 1% @ Iout= 100mA 2% @ 1 mA - Iout max Yes 2 A, Low Dropout, CMOS Linear Regulator with Adj. Output +1.6 to +3.6 -40 to +125 $1.20
    ADP1752 7 Presets--0.75 to 2.5V n/a 800mA 1.6 to 3.6 1.4mA 140mV 1% @ Iout = 10mA 2% @ 1 mA - Iout max Yes 800mA Low-Vin LDO Regulator +1.6 to +3.6 -40 to +125 $0.90
    ADP1753 n/a 0.75V to 3.0V 800mA 1.6 to 3.6 1.4mA 140mV 1% @ Iout = 10mA 2% @ 1 mA - Iout max Yes 800mA Low-Vin, Adjustable-Vout LDO Regulator +1.6 to +3.6 -40 to +125 $0.90
    ADP1754 7 Presets--0.75 to 2.5V n/a 1.2A 1.6 to 3.6 1.4mA 200mV 1% @ Iout = 10mA 2% @ 1 mA - Iout max Yes 1.2A, Low-Vin, Low Dropout Linear Regulator