ADP1851ACPZ-R7
ActiveWIDE RANGE INPUT, SYNCHRONOUS, STEP-DOWN DC-TO-DC CONTROLLER
Deep-Dive with AI
Search across all available documentation for this part.
ADP1851ACPZ-R7
ActiveWIDE RANGE INPUT, SYNCHRONOUS, STEP-DOWN DC-TO-DC CONTROLLER
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | ADP1851ACPZ-R7 |
|---|---|
| Clock Sync | Yes |
| Control Features | Tracking, Soft Start, Enable, Ramp, Current Limit, Power Good, Frequency Control |
| Duty Cycle (Max) | 90 % |
| Frequency - Switching (Max) | 1.5 MHz |
| Frequency - Switching (Min) | 200 kHz |
| 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 / Case | CSP, 16-WQFN Exposed Pad |
| Package Length | 4 mm |
| Package Name | 16-LFCSP |
| Package Width | 4 mm |
| Synchronous Rectifier | Yes |
| Topology | Buck |
| Voltage - Supply (Vcc/Vdd) Maximum | 20 V |
| Voltage - Supply (Vcc/Vdd) Minimum | 2.75 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | Updated |
|---|---|---|---|---|
| Digikey | Cut Tape (CT) | 1 | $ 3.89 | <2d |
| 10 | $ 2.94 | |||
| 25 | $ 2.70 | |||
| 100 | $ 2.44 | |||
| 250 | $ 2.37 | |||
| Tape & Reel (TR) | 1500 | $ 2.15 | <2d | |
| 3000 | $ 2.10 | |||
| 4500 | $ 2.08 | |||
CAD
3D models and CAD resources for this part
Description
General part information
ADP1851 Series
The ADP1851 is a wide range input, dc-to-dc, synchronous buck controller capable of running from commonly used 3.3 V to 12 V (up to 20 V) voltage inputs. The device nominally operates in current mode with valley current sensing providing the fastest step response for digital loads. It can also be configured as a voltage mode controller with low noise and crosstalk for sensitive loads.The ADP1851 is ideal in system applications requiring multiple output voltages. The ADP1851 includes a synchronization feature to eliminate beat frequencies between switching devices. It also provides accurate tracking capability between supplies and includes precision enable and power-good functions for simple, robust sequencing.The ADP1851 provides a high speed, high peak current gate driving capability to enable energy efficient power conversion. The device can be configured to operate in power saving mode by skipping pulses, reducing switching losses, and improving efficiency at light load and standby conditions.The accurate current limit allows design within a narrower range of tolerances and can reduce overall converter size and cost. The ADP1851 can regulate down to 0.6 V output using a high accuracy reference with ±1% tolerance over the temperature range of −40°C to +125°C.With its wide range input voltage, the ADP1851 provides the designer with maximum flexibility for use in a variety of system configurations; loop compensation, soft start, frequency setting, power saving mode, current limit, and current sense gain can all be programmed using external components. In addition, the external RAMP resistor allows the selection of optimal slope and VINfeedforward in both current and voltage modes for excellent line rejection. The linear regulator and the bootstrap diode for the high-side driver are internal.Protection features include undervoltage lockout, overvoltage, overcurrent/short circuit, and overtemperature.ApplicationsIntermediate bus and POL systems requiring sequencing and tracking, includingTelecom base station and networkingIndustrial and instrumentationMedical and healthcare
Documents
Technical documentation and resources
