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ADP7142: 40 V, 200 mA, LOW NOISE, CMOS LDO

The ADP7142 is a CMOS, low dropout linear regulator that operates from 2.7 V to 40 V and provide up to 200 mA of output current. These high input voltage LDOs are ideal for regulation of high performance analog and mixed signal circuits operating from 40 V down to 1.2 V rails. Using an advanced proprietary architecture, they provide high power supply rejection, low noise, and achieve excellent line and load transient response with just a small 2.2 μF ceramic output capacitor.

The ADP7142 is available in 16 fixed output voltage options. Each fixed output voltage may be adjusted above the initial set point with an external feedback divider. This allows the ADP7142 to provide an output voltage from 1.2 V to VOUT – VDO with high PSRR and low noise.

Table 1 lists the 16 standard output voltages for the ADP7142. Bold values are available from stock, all other options are available upon request.
User programmable soft start with an external capacitor is available in the LFCSP and SOIC packages.

The ADP7142 regulator output noise is 11 μVrms independent of the output voltage for the fixed options of 5V or less. The ADP7142 is available in a 6-lead, 2 mm × 2 mm LFCSP making them not only very compact solutions, but also providing excellent thermal performance for applications requiring up to 200 mA of output current in a small, low-profile footprint. The ADP7142 is also available in a 5-lead TSOT and an 8-lead SOIC.


    • Regulation to noise sensitive applications: ADC, DAC circuits,
    • Precision amplifiers, Power for VCO Vtune control
    • Communications and Infrastructure
    • Medical and Healthcare
    • Industrial and Instrumentation






    • Low Noise: 11 μVRMS independent of fixed output voltage
    • PSRR of 83 dB @ 10 KHz, 68 dB @ 100 KHz, 50 dB @ 1 MHz, VOUT ≤5V, VIN = 7V
    • Input voltage range: 2.7 V to 40 V
    • Maximum output current: 200 mA
    • Low dropout voltage: 200 mV @ 200 mA load, VOUT = 5V
    • Initial accuracy: ±1%
    • Accuracy over line, load, and temperature: ±2%
    • User programmable Soft Start (LFCSP and SOIC only)
    • Low Quiescent Current, IGND = 50 μA with no load
    • Low shutdown current: 1.5 μA @ VIN = 5 V, 3μA @ VIN = 40 V
    • Stable with small 2.2μF ceramic output capacitor

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