ADP1853ACPZ-R7
ActiveSYNCHRONOUS, STEP-DOWN DC-TO-DC CONTROLLER WITH VOLTAGE TRACKING AND SYNCHRONIZATION
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ADP1853ACPZ-R7
ActiveSYNCHRONOUS, STEP-DOWN DC-TO-DC CONTROLLER WITH VOLTAGE TRACKING AND SYNCHRONIZATION
Technical Specifications
Parameters and characteristics for this part
| Specification | ADP1853ACPZ-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, 20-WFQFN Exposed Pad |
| Package Length | 4 mm |
| Package Name | 20-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 |
ADP1853 Series
Synchronous, Step-Down DC-to-DC Controller with Voltage Tracking and Synchronization
| Part | Voltage - Output | Frequency - Switching | Voltage - Input (Maximum) | Voltage - Input (Minimum) | Regulator Topology | Contents | Current - Output | Utilized IC / Part | Main Purpose | Total Output Count | Output Type | Non-Isolated Output Count | Output Phases | Package / Case | Voltage - Supply (Vcc/Vdd) Minimum | Voltage - Supply (Vcc/Vdd) Maximum | Control Features | Function | Topology | Mounting Type | Frequency - Switching (Min) | Frequency - Switching (Max) | Clock Sync | Duty Cycle (Max) | Package Length | Package Name | Package Width | Output Configuration | Synchronous Rectifier | Number of Outputs | Operating Temperature (Max) | Operating Temperature (Min) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 Analog Devices Inc./Maxim Integrated | 3.3 V | 300 kHz | 15 V | 9 V | Buck | Board | 20 A | ADP1853 | DC/DC Step Down | 1 | Non-Isolated | 1 count | ||||||||||||||||||||
Analog Devices Inc./Maxim Integrated | Transistor Driver | 1 | 20-WFQFN Exposed Pad CSP | 2.75 V | 20 V | Current Limit Enable Frequency Control Power Good Ramp Soft Start Tracking | Step-Down | Buck | Surface Mount | 200 kHz | 1.5 MHz | Yes | 90 % | 4 mm | 20-LFCSP | 4 mm | Positive | Yes | 1 | 125 °C | -40 °C |
Pricing
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Description
General part information
ADP1853 Series
The ADP1853 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 ADP1853 can be used as a master synchronization clock for the power system and for convenient synchronization between controllers. The CLKOUT signal can synchronize other devices in the ADP185x family such that slave devices are phase-shifted from the master to reduce the input ripple current, improve EMI, and reduce the size of the input bulk capacitance. The ADP1853 can also be configured as a slave device for current sharing. Additionally, the ADP1853 includes accurate tracking, precision enable, and power good functions for sequencing. The ADP1853 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 ADP1853 can regulate down to 0.6 V output using a high accuracy reference with ±1% tolerance over the temperature range from −40°C to 125°C.With a wide range input voltage, the ADP1853 is designed to provide 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 choosing optimal slope and VINfeedforward in both current and voltage mode for excellent line rejection. The linear regulator and the boot strap diode for the high-side driver are internal.Protection features include undervoltage lock out, overvoltage, overcurrent/short circuit, and overtemperature.ApplicationsIntermediate bus and POL systems requiring sequencing and tracking, includingTelecom base station and networkingIndustrial and InstrumentationMedical and healthcare
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