company blog about Mingjiada Supply/Recycle ADI LT83201AUDB Silent Switcher 3 Synchronous Step-Down Regulator

Mingjiada Supply/Recycle ADI LT83201AUDB Silent Switcher 3 Synchronous Step-Down Regulator

LT83201AUDB is an 18V, 1A synchronous buck regulator launched by ADI. It features the Silent Switcher® 3 architecture and integrates a dedicated ultra-low-noise reference source, combining the high efficiency of a switching power supply with ultra-low-noise characteristics. The innovative ultra-low-noise architecture enables the switch-mode regulator to deliver outstanding low-frequency (0.1 Hz to 100 kHz) output noise performance. The output voltage can be programmed using a single resistor, resulting in virtually constant output noise that is independent of the output voltage.

LT83201AUDB – 18V, 1A Step-Down Silent Switcher 3 Regulator (ADI)
Brand: ADI
Full model number: LT83201AUDB#TRMPBF / LT83201AUDB#TRPBF
Device Type: Synchronous buck DC-DC switching regulator (Silent Switcher® 3, with integrated ultra-low-noise reference)
Package: LFCSP-15, 3mm × 2mm
Supply Services: Mingjiada Electronics | Brand-new, genuine stock available; obsolete stock buy-back

Detailed Specifications (LT83201AUDB)
Input Voltage VIN: 2.8 V to 18 V
Output Voltage VOUT: 0 V to (VIN − 0.5 V), single-resistor setting, supports unity gain (up to 13 V unity-gain output)
Maximum Output Current: 1 A continuous
Switching Frequency: 300 kHz to 6 MHz, adjustable/synchronisable (typical 2 MHz)
Efficiency: Up to 94% at 2 MHz / 12 V → 5 V; approximately 92% at 4 MHz under the same conditions
Noise Performance: RMS noise 4 µV RMS (10 Hz–100 kHz), spot noise 4 nV/√Hz @ 10 kHz (uses a current-referenced architecture, eliminating the need for a downstream LDO)
Transient Recovery: <1 µs
Minimum On-Time: 13 ns
Reference Accuracy: ±0.6% over the full temperature range (with Remote Sense)
Operating Modes: FCM / DCM selectable via pin; DCM with full-frequency chopping at light loads
Protection/Features: Programmable Power Good, dynamic output voltage regulation, UVLO, over-temperature protection (shutdown at ~165°C)
Package: 15-lead LFCSP (3×2 mm), bare pad on the bottom for heat dissipation

LT83201AUDB Key Features
Silent Switcher® 3 Architecture: Utilises third-generation Silent Switcher technology to minimise EMI emissions whilst maintaining high efficiency at high switching frequencies.
Ultra-low noise performance:
Integrated ultra-low noise reference source.
RMS noise: 4 µV rms (10 Hz to 100 kHz).
Spike noise: 4 nV/√Hz (at 10 kHz).
High efficiency: Up to 94% efficiency at a switching frequency of 2 MHz, converting 12 V input to 5 V output.
Fast transient response: Transient recovery time of less than 1 µs.
Flexible switching frequency: Adjustable and synchronisable switching frequency range from 300 kHz to 6 MHz.
Selectable operating modes: Forced continuous mode (FCM) or discontinuous conduction mode (DCM) can be selected via a pin to optimise efficiency and ensure predictable noise at light loads.
Programmable output voltage: The output voltage can be programmed using a single resistor, and the output noise is virtually independent of the output voltage.
Supports dynamic output voltage control: To meet specific application requirements.
Compact package: Available in a miniature 15-pin 3 mm × 2 mm LFCSP package

The LT83201AUDB is ideally suited for noise-sensitive applications requiring high efficiency:
RF power supplies: PLLs, VCOs, mixers, LNAs, PAs
Low-noise instrumentation
High-speed/high-precision ADCs/DACs
General-purpose power supplies

Mingjiada Electronics – LT83201AUDB One-Stop Supply + Recycling
Shenzhen Mingjiada Electronics Co., Ltd. – We offer a long-term supply of brand-new, genuine LT83201AUDB components from stock, and purchase surplus stock and factory clearance ICs at competitive prices.
Supply Services: Genuine, original LT83201AUDB components in stock; we support small-batch samples and BOM fulfilment.
Recycling Services: LT83201AUDB surplus stock and returned goods; we also offer consignment and agency clearance services.
Brands Covered: ADI, TI, ST, NXP, Infineon, ON, Xilinx, Broadcom, etc.

For further information on the LT83201AUDB, to purchase samples or enquire about buy-back prices, please visit the Mingjiada Electronics website (https://www.integrated-ic.com/) for more details on supply and demand.