Features and Benefits

  • Download ADM7172-KGD Data Sheet. Available as Known Good Die and fully guaranteed to data sheet specifications.
  • Input voltage range: 2.3 V to 6.5 V
  • Maximum load current: 2 A
  • Low noise: 5 µV rms independent of output voltage at 100 Hz to 100 kHz
  • Fast transient response: 1.5 μs for 1 mA to 1.5 A load step
  • 60 dB PSRR at 100 kHz
  • Low dropout voltage: 172 mV at 2 A load, VOUT = 3 V
  • Initial accuracy: −0.5% (minimum), +1% (maximum)
  • Accuracy over line, load, and temperature: ±1.5%
  • Quiescent current, IGND = 0.7 mA with no load
  • Low shutdown current: 0.25 μA at VIN = 5 V
  • Stable with small 4.7 µF ceramic output capacitor
  • Adjustable and fixed output voltage options: 1.2 V to 5.0 V
  • Adjustable output from 1.2 V to VIN − VDO
  • Precision enable
  • Adjustable soft start
  • 8-lead 3 mm × 3 mm LFCSP package
  • Supported by ADIsimPower tool

Product Details

The ADM7172 is a CMOS, low dropout linear regulator (LDO) that operates from 2.3 V to 6.5 V and provides up to 2 A of output current. This high output current LDO is ideal for regulation of high performance analog and mixed-signal circuits operating from 6 V down to 1.2 V rails. Using an advanced proprietary architecture, the device provides high power supply rejection and low noise, and achieves excellent line and load transient response with just a small 4.7 µF ceramic output capacitor. Load transient response is typically 1.5 μs for a 1 mA to 1.5 A load step.

The ADM7172 is available in 17 fixed output voltage options. The following voltages are available from stock: 1.3 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V, 4.2 V, and 5.0 V. Additional voltages that are available by special order are: 1.5 V, 1.85 V, 2.0 V, 2.2 V, 2.7 V, 2.75 V, 2.8 V, 2.85 V, 3.8 V, and 4.6 V. An adjustable version is also available that allows output voltages that range from 1.2 V to VIN − VDO with an external feedback divider.

Inrush current can be controlled by adjusting the start-up time via the soft start pin. The typical start-up time with a 1 nF soft start capacitor is 1.0 ms.

The ADM7172 regulator output noise is 5 μV rms, independent of the output voltage. The ADM7172 is available in an 8-lead, 3 mm × 3 mm LFCSP, making it not only a very compact solution, but also providing excellent thermal performance for applications requiring up to 2 A of output current in a small, low profile footprint.


  • Regulation to noise sensitive applications: ADC and DAC circuits, precision amplifiers, PLLs/VCOs, and clocking ICs
  • Communications and infrastructure
  • Medical and healthcare
  • Industrial and instrumentation

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.