Alternative Parts
Overview
Features and Benefits
- Maximum output current: 300 mA
- Input voltage range: 1.6 V to 3.6 V
- Low quiescent current
- IGND = 23 μA with 0 mA load
- IGND = 170 μA with 300 mA load
- Low shutdown current: <1 μA
- Low dropout voltage: 50 mV at 300 mA load
- Output voltage accuracy: ±1%
- Up to 31 fixed-output voltage options available from 0.8 V to 3.0 V
- Accuracy over line, load, and temperature: ±3%
- Stable with small 1 μF ceramic output capacitor
- PSRR performance of 70 dB at 10 kHz and 73 dB at 1 kHz
- Low noise: 30 μV rms at VOUT = 0.8 V
- Current limit and thermal overload protection
- Logic-controlled enable
- Tiny 4-ball, 0.5 mm pitch WLCSP package
Product Details
The ADP170/ADP171/ADP172 are low voltage input, low quiescent current, low-dropout (LDO) linear regulators that operate from 1.6 V to 3.6 V and provide up to 300 mA of output current. The low 50 mV dropout voltage at 300 mA load improves efficiency and allows operation over a wide input voltage range. The low 23 μA of quiescent current at no load makes the ADP172 ideal for battery-operated portable equipment.
The ADP172 is capable of 31 fixed-output voltage options, ranging from 0.8 V to 3.0 V. The ADP172 is optimized for stable operation with small 1 μF ceramic output capacitors. Ideal for powering digital processors, the ADP172 exhibits good transient perform- ance and occupies minimal board space. Compared with commodity-type LDOs, the ADP172 provides 20 dB to 40 dB better power supply rejection ratio (PSRR) at 100 kHz, making the ADP172 an ideal power source for analog-to-digital converter (ADC) mixed-signal processor systems and allowing use of smaller size bypass capacitors. In addition, low output noise performance without the need for an additional bypass capacitor further reduces printed circuit board (PCB) component count.
Short-circuit protection and thermal overload protection circuits prevent damage in adverse conditions. The ADP172 is available in a tiny 4-ball, 0.5 mm pitch WLCSP for the smallest footprint solution to meet a variety of portable power applications.
APPLICATIONS
- Mobile phones
- Digital camera and audio devices
- Portable and battery-powered equipment
- DSP/FPGA/microprocessor supplies
- Post dc-to-dc regulation
Product Categories
Product Lifecycle
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.
Evaluation Kits (1)
Documentation & Resources
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AN-1072: How to Successfully Apply Low Dropout Regulators4/27/2010PDF105 kB
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UG-053: RedyKit for the ADP172 LDO4/13/2010PDF133 kB
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Linear Low Dropout (LDO) Regulator Solutions4/17/2018PDF3 M
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
ADP172-0.9
ADP172-1
ADP172-1.2
ADP172-1.26
ADP172-1.5
ADP172-1.65
ADP172-1.7
ADP172-1.8
ADP172-2.1
ADP172-2.2
ADP172-2.9
ADP172-3
Design Tools
ADI Linear Regulator Design Tool and Parametric Search
Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
PCN-PDN Information
Support & Discussions
ADP172 Discussions
Sample & Buy
Ordering FAQs
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Buy Now Pricing
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List Pricing
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Sampling
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Evaluation Boards
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Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
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.