ADP1871ARMZ-1.0-R7
ActiveSYNCHRONOUS BUCK CONTROLLER WITH CONSTANT ON-TIME, VALLEY CURRENT MODE, AND POWER SAVE MODE
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ADP1871ARMZ-1.0-R7
ActiveSYNCHRONOUS BUCK CONTROLLER WITH CONSTANT ON-TIME, VALLEY CURRENT MODE, AND POWER SAVE MODE
Technical Specifications
Parameters and characteristics for this part
| Specification | ADP1871ARMZ-1.0-R7 |
|---|---|
| Clock Sync | No |
| Control Features | Enable |
| Duty Cycle (Max) | 45 % |
| Frequency - Switching | 1 MHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature (Max) | 125 °C |
| Operating Temperature (Min) | -40 °C |
| Output Configuration | Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package Length | 0.118 in |
| Package Name | 10-MSOP, 10-TFSOP |
| Package Width | 3 mm |
| Synchronous Rectifier | Yes |
| Topology | Buck |
| Voltage - Supply (Vcc/Vdd) Maximum | 20 V |
| Voltage - Supply (Vcc/Vdd) Minimum | 3.25 V |
| Part | Board Type | Total Output Count | Output Type | Non-Isolated Output Count | Supplied Contents | Frequency - Switching | Voltage - Input (Minimum) | Voltage - Input (Maximum) | Contents | Main Purpose | Regulator Topology | Utilized IC / Part | Control Features | Voltage - Supply (Vcc/Vdd) Minimum | Voltage - Supply (Vcc/Vdd) Maximum | Duty Cycle (Max) | Operating Temperature (Max) | Operating Temperature (Min) | Package Length | Package Name | Package Width | Topology | Number of Outputs | Output Phases | Output Configuration | Function | Synchronous Rectifier | Mounting Type | Clock Sync | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Analog Devices Inc./Maxim Integrated | Fully Populated | 1 | Non-Isolated | 1 count | Board(s) | 1 MHz | 2.95 V | 20 V | Board | DC/DC Step Down | Buck | ADP1871 | ||||||||||||||||||
Analog Devices Inc./Maxim Integrated | Transistor Driver | 600 kHz | Enable | 2.95 V | 20 V | 65 % | 125 °C | -40 °C | 0.118 in | 10-MSOP 10-TFSOP | 3 mm | Buck | 1 | 1 | Positive | Step-Down | Yes | Surface Mount | No | |||||||||||
 Analog Devices Inc./Maxim Integrated | Transistor Driver | 300 kHz | Enable | 2.95 V | 20 V | 84 % | 125 °C | -40 °C | 3 mm | 10-LFCSP-WD | 3 mm | Buck | 1 | 1 | Positive | Step-Down | Yes | Surface Mount | No | 10-VFDFN Exposed Pad CSP | ||||||||||
Analog Devices Inc./Maxim Integrated | Fully Populated | 1 | Non-Isolated | 1 count | Board(s) | 600 kHz | 2.95 V | 20 V | Board | DC/DC Step Down | Buck | ADP1871 | ||||||||||||||||||
Analog Devices Inc./Maxim Integrated | Transistor Driver | 300 kHz | Enable | 2.95 V | 20 V | 84 % | 125 °C | -40 °C | 0.118 in | 10-MSOP 10-TFSOP | 3 mm | Buck | 1 | 1 | Positive | Step-Down | Yes | Surface Mount | No | |||||||||||
Analog Devices Inc./Maxim Integrated | Transistor Driver | 1 MHz | Enable | 3.25 V | 20 V | 45 % | 125 °C | -40 °C | 0.118 in | 10-MSOP 10-TFSOP | 3 mm | Buck | 1 | 1 | Positive | Step-Down | Yes | Surface Mount | No | |||||||||||
 Analog Devices Inc./Maxim Integrated | Transistor Driver | 1 MHz | Enable | 3.25 V | 20 V | 45 % | 125 °C | -40 °C | 3 mm | 10-LFCSP-WD | 3 mm | Buck | 1 | 1 | Positive | Step-Down | Yes | Surface Mount | No | 10-VFDFN Exposed Pad CSP | ||||||||||
Analog Devices Inc./Maxim Integrated | Transistor Driver | 600 kHz | Enable | 2.95 V | 20 V | 65 % | 125 °C | -40 °C | 3 mm | 10-LFCSP-WD | 3 mm | Buck | 1 | 1 | Positive | Step-Down | Yes | Surface Mount | No | 10-VFDFN Exposed Pad CSP |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | Updated |
|---|---|---|---|---|
| Digikey | Tape & Reel (TR) | 1000 | $ 2.25 | <2d |
| 2000 | $ 2.20 | |||
| 3000 | $ 2.17 | |||
CAD
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Description
General part information
ADP1871 Series
TheADP1870/ 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 current-limit, 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 pulse-width 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.APPLICATIONSTelecom and networking systemsMid to high end serversSet-top boxesDSP core power supplies12 V input POL supplies
Documents
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