Analog Devices, Inc. Synchronous Buck Controller with Constant On-Time and Valley Current Mode ADP1870ACPZ-1.0-R7

Description
Product Details The ADP1870/ADP1871 are versatile current-mode, synchronous step-down controllers that provide superior transient response, optimal stability, and current-limit protection by using a constant on-time, pseudo-fixed frequency with a programmable currentlimit, current-control scheme. In addition, these devices offer optimum performance at low duty cycles by utilizing valley current-mode control architecture. This allows the ADP1870/ ADP1871 to drive all N-channel power stages to regulate output voltages as low as 0.6 V. The ADP1871 is the power saving mode (PSM) version of the device and is capable of pulse skipping to maintain output regulation while achieving improved system efficiency at light loads (see the Power Saving Mode (PSM) Version (ADP1871) section for more information). Available in three frequency options (300 kHz, 600 kHz, and 1.0 MHz, plus the PSM option), the ADP1870/ADP1871 are well suited for a wide range of applications that require a single-input power supply range from 2.95 V to 20 V. Low voltage biasing is supplied via a 5 V internal LDO. In addition, an internally fixed soft start period is included to limit input in-rush current from the input supply during startup and to provide reverse current protection during soft start for a precharged output. The low-side current-sense, current-gain scheme and integration of a boost diode, along with the PSM/forced pulsewidth modulation (PWM) option, reduce the external part count and improve efficiency. The ADP1870/ADP1871 operate over the -40°C to +125°C junction temperature range and are available in 10-lead MSOP package.
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Company
Product
Description
Supplier Links
Norwood, MA, USA
Synchronous Buck Controller with Constant On-Time and Valley Current Mode
ADP1870ACPZ-1.0-R7
Synchronous Buck Controller with Constant On-Time and Valley Current Mode ADP1870ACPZ-1.0-R7
Product Details The ADP1870/ADP1871 are versatile current-mode, synchronous step-down controllers that provide superior transient response, optimal stability, and current-limit protection by using a constant on-time, pseudo-fixed frequency with a programmable currentlimit, current-control scheme. In addition, these devices offer optimum performance at low duty cycles by utilizing valley current-mode control architecture. This allows the ADP1870/ ADP1871 to drive all N-channel power stages to regulate output voltages as low as 0.6 V. The ADP1871 is the power saving mode (PSM) version of the device and is capable of pulse skipping to maintain output regulation while achieving improved system efficiency at light loads (see the Power Saving Mode (PSM) Version (ADP1871) section for more information). Available in three frequency options (300 kHz, 600 kHz, and 1.0 MHz, plus the PSM option), the ADP1870/ADP1871 are well suited for a wide range of applications that require a single-input power supply range from 2.95 V to 20 V. Low voltage biasing is supplied via a 5 V internal LDO. In addition, an internally fixed soft start period is included to limit input in-rush current from the input supply during startup and to provide reverse current protection during soft start for a precharged output. The low-side current-sense, current-gain scheme and integration of a boost diode, along with the PSM/forced pulsewidth modulation (PWM) option, reduce the external part count and improve efficiency. The ADP1870/ADP1871 operate over the -40°C to +125°C junction temperature range and are available in 10-lead MSOP package.

Product Details

The ADP1870/ADP1871 are versatile current-mode, synchronous step-down controllers that provide superior transient response, optimal stability, and current-limit protection by using a constant on-time, pseudo-fixed frequency with a programmable currentlimit, current-control scheme. In addition, these devices offer optimum performance at low duty cycles by utilizing valley current-mode control architecture. This allows the ADP1870/ ADP1871 to drive all N-channel power stages to regulate output voltages as low as 0.6 V.

The ADP1871 is the power saving mode (PSM) version of the device and is capable of pulse skipping to maintain output regulation while achieving improved system efficiency at light loads (see the Power Saving Mode (PSM) Version (ADP1871) section for more information).

Available in three frequency options (300 kHz, 600 kHz, and 1.0 MHz, plus the PSM option), the ADP1870/ADP1871 are well suited for a wide range of applications that require a single-input power supply range from 2.95 V to 20 V. Low voltage biasing is supplied via a 5 V internal LDO.

In addition, an internally fixed soft start period is included to limit input in-rush current from the input supply during startup and to provide reverse current protection during soft start for a precharged output. The low-side current-sense, current-gain scheme and integration of a boost diode, along with the PSM/forced pulsewidth modulation (PWM) option, reduce the external part count and improve efficiency.

The ADP1870/ADP1871 operate over the -40°C to +125°C junction temperature range and are available in 10-lead MSOP package.

Supplier's Site Datasheet
PMIC - Voltage Regulators - DC DC Switching Controllers - ADP1870ACPZ-1.0-R7 - Lingto Electronic Limited
Shenzhen, China
PMIC - Voltage Regulators - DC DC Switching Controllers
ADP1870ACPZ-1.0-R7
PMIC - Voltage Regulators - DC DC Switching Controllers ADP1870ACPZ-1.0-R7
IC REG CTRLR BUCK 10LFCSP

IC REG CTRLR BUCK 10LFCSP

Supplier's Site Datasheet
DC DC Switching Controllers - ADP1870ACPZ-1.0-R7CT-ND - DigiKey
Thief River Falls, MN, United States
DC DC Switching Controllers
ADP1870ACPZ-1.0-R7CT-ND
DC DC Switching Controllers ADP1870ACPZ-1.0-R7CT-ND
IC REG CTRLR BUCK 10LFCSP

IC REG CTRLR BUCK 10LFCSP

Supplier's Site Datasheet
DC DC Switching Controllers - ADP1870ACPZ-1.0-R7TR-ND - DigiKey
Thief River Falls, MN, United States
DC DC Switching Controllers
ADP1870ACPZ-1.0-R7TR-ND
DC DC Switching Controllers ADP1870ACPZ-1.0-R7TR-ND
IC REG CTRLR BUCK 10LFCSP

IC REG CTRLR BUCK 10LFCSP

Supplier's Site Datasheet
DC DC Switching Controllers - ADP1870ACPZ-1.0-R7DKR-ND - DigiKey
Thief River Falls, MN, United States
DC DC Switching Controllers
ADP1870ACPZ-1.0-R7DKR-ND
DC DC Switching Controllers ADP1870ACPZ-1.0-R7DKR-ND
IC REG CTRLR BUCK 10LFCSP

IC REG CTRLR BUCK 10LFCSP

Supplier's Site Datasheet
Sheung Wan, Hong Kong
Switching Controllers
ADP1870ACPZ-1.0-R7
Switching Controllers ADP1870ACPZ-1.0-R7
Switching Controllers Constant On-Time & Valley Crnt Mode

Switching Controllers Constant On-Time & Valley Crnt Mode

Supplier's Site Datasheet

Technical Specifications

  Analog Devices, Inc. Lingto Electronic Limited DigiKey VAST STOCK CO., LIMITED
Product Category IC Switching Voltage Regulators IC Switching Voltage Regulators IC Switching Voltage Regulators IC Switching Voltage Regulators
Product Number ADP1870ACPZ-1.0-R7 ADP1870ACPZ-1.0-R7 ADP1870ACPZ-1.0-R7CT-ND ADP1870ACPZ-1.0-R7
Product Name Synchronous Buck Controller with Constant On-Time and Valley Current Mode PMIC - Voltage Regulators - DC DC Switching Controllers DC DC Switching Controllers Switching Controllers
Configuration / Function Buck Buck
Package Type Other; MSOP Other; 10-VFDFN Exposed Pad, CSP
Life Cycle Stage Production
IOUT 8 amps
VIN 2.95 to 20 volts
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