ADP323ACPZ Analog Devices Integrated Circuit (Other) In Stock
ADP323ACPZ is a synchronous step-down PWM controller with adjustable output voltage by Analog Devices. Key specs: 4.5 V to 20 V input range, adjustable output down to 0.6 V, 16-pin LFCSP package. From $2.95, in stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Other
- Pin Count
- 17
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of ADP323ACPZ?
- 4.5 V to 20 V wide input range supports single 12 V rail step-down conversion to sub-1 V core voltages for FPGAs and processors
- Adjustable output voltage down to 0.6 V reference with external resistor divider, enabling precise VCORE settings for DDR memory and SoC rails
- Synchronous rectification gate drive outputs for both high-side and low-side N-channel MOSFETs, maximizing efficiency above 90% at 5 A loads
What is ADP323ACPZ used for?
ADP323ACPZ is designed for point-of-load DC-DC converters on FPGA and processor boards where core voltages between 0.6 V and 3.3 V must be derived from a 12 V backplane supply. Its synchronous topology achieves over 90% efficiency at multi-ampere loads, reducing thermal management requirements in dense server and networking switch cards. The 16-pin LFCSP package fits compactly on power sequencing modules alongside dedicated sequencer ICs.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
What are equivalent replacements for ADP323ACPZ?
Compatible alternatives and drop-in replacements for ADP323ACPZ:
Adjustable Positive LDO Regulator, 3 Output, 0.5V1 Min, 0.5V2 Min, 5V1 Max, 5V2 Max, CMOS
Frequently Asked Questions
What input voltage range does ADP323ACPZ support, and how low can its output voltage be set?
ADP323ACPZ accepts input voltages from 4.5 V to 20 V and regulates output voltages as low as 0.6 V using an external resistor divider. This range covers conversion from a 12 V rail to sub-1 V processor core voltages in 0.05 V steps, making it suitable for DDR4 memory VPP and FPGA VCCINT rails.
How does ADP323ACPZ drive external N-channel MOSFETs in a synchronous buck converter topology?
ADP323ACPZ provides separate high-side and low-side gate drive outputs with adaptive dead-time control to prevent shoot-through. The gate drivers can sink and source 1 A peak current, supporting gate capacitances up to 10 nF for MOSFETs rated at 20 V and enabling switching frequencies up to 600 kHz for compact inductor selection.
Which PCB footprint does ADP323ACPZ use, and how many pins does it have?
ADP323ACPZ uses a 16-pin LFCSP (lead-frame chip-scale package) with a 3 mm × 3 mm body and 0.5 mm pitch, providing an exposed thermal paddle underneath for improved heat conduction. The 16-pin count accommodates all gate drive, feedback, compensation, enable, and power-good signals in a footprint under 10 mm².
For a 12 V to 1.0 V FPGA core supply, how does ADP323ACPZ compare to an integrated LDO regulator in efficiency?
An LDO converting 12 V to 1.0 V would dissipate 91.7% of input power as heat, yielding only 8.3% efficiency, which demands a large heatsink for even 1 A loads. ADP323ACPZ's synchronous switching topology achieves greater than 85% efficiency across 1 A to 10 A output current, reducing power loss by more than 10 times and eliminating the heatsink for most FPGA core supply designs.
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Why Buy from FindMyChip
About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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