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ADP2301:  1.2 A, 20 V, 1.4 MHz non-synchronous step-down switching regulator

Product Status:   Recommended for New Designs 

The ADP2300/ADP2301 are compact, constant-frequency, current-mode, step-down dc-to-dc regulators with integrated power MOSFET. The ADP2300/ADP2301 devices run from any input voltage from 3.0 V up to 20 V, making them suitable for a wide range of applications. A precise, low voltage internal reference makes these devices ideal for generating a regulated output voltage as low as 0.8 V, with ±2% ...More

ADP2301:  1.2 A, 20 V, 1.4 MHz non-synchronous step-down switching regulator

Product Description

The ADP2300/ADP2301 are compact, constant-frequency, current-mode, step-down dc-to-dc regulators with integrated power MOSFET. The ADP2300/ADP2301 devices run from any input voltage from 3.0 V up to 20 V, making them suitable for a wide range of applications. A precise, low voltage internal reference makes these devices ideal for generating a regulated output voltage as low as 0.8 V, with ±2% accuracy, for up to 1.2 A load current.

There are two frequency options: the ADP2300 runs at 700 kHz and the ADP2301 runs at 1.4 MHz. These options allow users to make decisions based on the trade-off between efficiency and the size of the total solution. Current-mode control provides fast and stable line and load transient performance. Each ADP2300/ ADP2301 device includes an internal soft start to prevent inrush current at power up. Other key safety features include short-circuit protection, thermal shutdown (TSD) and input undervoltage lockout (UVLO). Precision enable pin threshold voltage allows ADP2300/ADP2301 to be easily sequenced from other input/ output supplies, or the enable pin can be used as a programmable UVLO input by using resistive divider.

The ADP2300/ADP2301 are available in a 6-lead TSOT package and are rated for the −40°C to +125°C junction temperature range.

Applications
  • LDO replacement for digital load applications
  • Intermediate power rail conversion
  • Communications and networking
  • Industrial and instrumentation
  • Healthcare and Medical Consumer

    • Chinese data sheet available
    • High efficiency, up to 91%
    • 1.2 A maximum load current
    • ±2% output accuracy over temperature range
    • Wide input voltage range: 3.0 V to 20 V
    • 700 kHz or 1.4 MHz switching frequency options
    • Current-mode control architecture
    • Output voltage from 0.8 V to 0.85×VIN
    • Automatic PFM/PWM mode switching
    • Precision enable pin with hysteresis
    • Integrated high-side MOSFET
    • Integrated bootstrap diode
    • See data sheet for additional features

Functional Block Diagram for ADP2301

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Circuit Benefits and Features:
  • 12 different voltage and current output conditions
  • Configure the all other channels to be powered off
Products Used in This Circuit
  • AD628: High Common-Mode Voltage, Programmable Gain Difference Amplifier
  • ADCMP350: Comparator & 0.6V Reference in 4-SC70 w/ Open-Drain Active-Low Output
  • ADCMP670: Dual Low Power 1.5% Comparator With 400 mV Reference
  • ADM1066: Super Sequencer® with Margining Control and Auxiliary ADC Inputs
  • ADM1170: 1.6 V to 16.5 V Hot Swap Controller
  • ADM1178: Hot Swap Controller and Digital Power Monitor with ALERTB Output
  • ADP121: 150 mA, Low Quiescent Current, CMOS Linear Regulator in 5-Lead TSOT or 4-Ball WLCSP
  • ADP151: Ultra Low Noise, 200 mA CMOS Linear Regulator
  • ADP1613: 650 kHz /1.3 MHz Step-Up PWM DC-to-DC Switching Converter with 2.0 A Current Limit
  • ADP1741: 2 A, Low VIN, Dropout, CMOS Linear Regulator
  • ADP1864: Constant Frequency Current-Mode Step-Down DC-to-DC Controller in TSOT
  • ADP1872: Synchronous Current-Mode Buck Controller with Constant On-time and 0.6 V Reference Voltage
  • ADP2108: Compact, 600 mA, 3 MHz, Step-Down DC-to-DC Converter
  • ADP2114: Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-to-DC Regulator
  • ADP2300: 1.2 A, 20 V, 700 kHz Nonsynchronous Step-down Switching Regulator
  • ADP2301: 1.2 A, 20 V, 1.4 MHz non-synchronous step-down switching regulator
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Circuit Design Assistance:
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  • Evaluation Hardware

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*The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

ADP2301 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP2301-EVALZ Status: Production Evaluation Board $60.00 Yes -

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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.

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