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.
Buck Regulator Positive Output Step-Down DC-DC Controller IC 10-LFCSP-WD (3x3)
Buck Regulator Positive Output Step-Down DC-DC Controller IC 10-LFCSP-WD (3x3)
Buck Regulator Positive Output Step-Down DC-DC Controller IC 10-LFCSP-WD (3x3)
Manufacturer: Analog Devices Inc.
Win Source Part Number: 768006-ADP1870ACPZ-0
Packaging: Reel package
Operating Temperature Range: -40°C ~ 125°C (TJ)
Package: 10-WFDFN Exposed Pad, CSP
Output Type: Transistor Driver
Function: Step-Down
Topology: Buck
Frequency - Switching: 300kHz
Control Features: Enable
Supply Voltage: 2.95 V ~ 20 V
Number of Outputs: 1
Output Configuration: Positive
Synchronous Rectifier: Yes
Family Name: ADP1870
Output Phases: 1
Clock Sync: No
Categories: Integrated Circuits (ICs)
Manufacturer Package: 10-LFCSP-WD (3x3)
Duty Cycle (Maximum): 84%
Alternative Parts (Cross-Reference): L6730TR; ADP1871ACPZ-0.6-R7; ADP1870ACPZ-0.3-R7; ADP1871ACPZ-1.0-R7; L6730C; L6730CQTR; L6730D;
Introduction Date: March 11, 2010
ECCN: EAR99
Country of Origin: Republic of Korea
Estimated EOL Date: 2030
Halogen Free: Compliant
Popularity: Medium
Fake Threat In the Open Market: 42 pct.
Supply and Demand Status: Limited
Switching Controllers Constant On-Time & Valley Crnt Mode
IC REG CTRLR BUCK 10LFCSP
| Analog Devices, Inc. | DigiKey | Win Source Electronics | VAST STOCK CO., LIMITED | Lingto Electronic Limited | |
|---|---|---|---|---|---|
| Product Category | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators |
| Product Number | ADP1870ACPZ-0.3-R7 | ADP1870ACPZ-0.3-R7DKR-ND | 768006-ADP1870ACPZ-0.3-R7 | ADP1870ACPZ-0.3-R7 | ADP1870ACPZ-0.3-R7 |
| Product Name | Synchronous Buck Controller with Constant On-Time and Valley Current Mode | DC DC Switching Controllers | PMIC - PMIC - Voltage Regulators - DCDC Switching Controllers - ADP1870ACPZ-0.3-R7 | Switching Controllers | PMIC - Voltage Regulators - DC DC Switching Controllers |
| Configuration / Function | Buck | Buck | Buck | ||
| Package Type | Other; MSOP | Other; 10-VFDFN Exposed Pad, CSP | Other; 10-WFDFN Exposed Pad, CSP | ||
| Life Cycle Stage | Production | ||||
| IOUT | 8 amps | ||||
| VIN | 2.95 to 20 volts |
