Part Number: EP53F8QI

Manufacturer: Intel / Altera

Description: Switching Voltage Regulators SYN PWM DC-DC CONV 1500mA.

Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of EP53F8QI

Datasheet  EP53F8QI datasheet
Category Power Supplies – Board Mount
Family DC DC Converters
Manufacturer Altera
Series 5300
Packaging Tape & Reel (TR)
Part Status Active
Type Non-Isolated PoL Module
Number of Outputs 1
Voltage – Input (Min) 2.4V
Voltage – Input (Max) 5.5V
Voltage – Output 1 0.6 ~ 4.96 V
Voltage – Output 2
Voltage – Output 3
Current – Output (Max) 1.5A
Power (Watts) – Manufacture Series
Voltage – Isolation
Applications ITE (Commercial)
Features Remote On/Off, OCP, OTP, SCP, UVLO
Mounting Type Surface Mount
Package / Case 16-QFN
Size / Dimension 0.12″ L x 0.12″ W x 0.04″ H (3.0mm x 3.0mm x 1.1mm)
Operating Temperature -40°C ~ 85°C
Efficiency 94%
Power (Watts) – Max

EP53F8QI Introduction

Are you sick of power systems that are cumbersome and hard to understand? If you’re looking for a comprehensive power system on silicon, go no further than the EP53F8QI, a breakthrough DC-DC converter device. With its built-in magnets, this full module is intended to provide extensive engineering evaluation options, such as the flexibility to add more input and output capacitors for testing a wider range of setups.

The board has pre-placed resistors and a jumper to select one of four predetermined output voltages, making it easy to program the output voltage using a resistor divider. This product is made for the user’s convenience, with features like quick-connect jumpers for enabling and VOUT, many test locations, and clip leads for making input and output connections. In addition, the EP53F8QI safeguards against typical installation errors through features like input decoupling and input reverse polarity protection. The EP53F8QI is a great way to modernize your electrical setup now.

EP53F8QI Features

Several features set the EP53F8QI apart from conventional power systems. With four preset output voltages accessible on the evaluation board, programming the device’s output voltage with a resistor divider is simple. Input and output connections are made via clip leads and multiple test pins, which makes the board easy to use and troubleshoot.

The EP53F8QI is ideal for individuals seeking to experiment with various input/output capacitor combinations. The device can accommodate additional input and output capacitors, enabling performance testing over a wide variety of configurations. A pre-tinned pad is provided for an additional 0805 case-size MLCC capacitor. The board is pre-populated with the input capacitance need of 10 uF and 680pF MLCC capacitor parallel. The minimum output capacitance needed is 22uF, and there is room on the pre-tinned pad for up to one more output capacitor with an 0805-case size.

The EP53F8QI has test point connections that reduce the voltage drop across the line and load cables, which can result in misleading readings to assure reliable measurements. Series ammeters or precise shunt resistors can be used to monitor input and output current, which is crucial when assessing efficiency.

The EP53F8QI, a ground-breaking DCDC converter product, provides engineers with a full power system on silicon, integrated magnetics, and various features that make assessment and experimentation easier. The EP53F8QI can help you upgrade your power system right now.

Output Voltage Select

A straightforward resistor divider is used to configure the EP53F8QI’s output voltage. The evaluation board already has a set of four jumpers that the user can use to select one of four preset voltages. The default voltage value is 0.6V if no jumper is occupied.

Any desired output that falls within the device’s operational range can also be produced by removing one of the preset resistors and substituting one with a different value. Further information on adjusting the output voltage can be found in the product data-sheet.


  • EU RoHS Compliant: This item complies with the RoHS directive of the European Union, which prohibits the use of specific hazardous compounds in electronic products.
  • Export Control Classification Number (ECCN) (US) EAR99: This product has an Export Control Classification Number (ECCN) of EAR99, which designates it as a low-risk item that can typically be exported without a license.
  • Part Status: This item is marked as “Obsolete,” which indicates that the manufacturer is no longer producing or distributing it. Distributors or resellers may still be able to sell customers the stock that is left over.
  • HTS: This product’s Harmonized Tariff Schedule (HTS) code for electronic integrated circuits and micro assemblies is 8542.39.00.01.
  • This product contains very high-concern chemicals (SVHCs) listed on the REACH candidate list. These compounds might be detrimental to the environment or human health.
  • Automotive: Using this product in automotive applications is not advised.
  • Documentation for the Production Part Approval Procedure (PPAP) is unavailable for this product.
  • The EP53F8QI is a step-down DC–DC converter of this type.
  • Process Technology: The CMOS (Complementary Metal-Oxide-Semiconductor) process technology, frequently employed for analog and digital circuits, forms the foundation for this device.
  • Output Type: This converter’s output voltage is programmable.
  • Switching Frequency (kHz): This product typically switches at a frequency of 4000 kHz.
  • This device is a switching regulator, which means that it controls the output voltage using high-frequency switching.
  • There is only one output for this product.
  • Output Voltage (V): This converter can produce voltages as low as 0.6V.
  • The greatest output current (in A) that this converter can deliver is 1.5A.
  • Minimum Input Voltage (V): This converter requires a minimum input voltage of 2.4V.
  • Maximum Input Voltage (V): This converter can handle a maximum input voltage of 5.5V.
  • Operational Supply Voltage (V): This converter can function between 2.4 and 5.5 volts.
  • Line Regulation: This converter’s usual line regulation is 0.31%/V, which means that for every 1V variation in the input voltage, the output voltage will change by 0.31%.
  • Load Regulation: This converter’s normal load regulation is 0.42%/A, which means that for every 1A change in output current, the output voltage will change by 0.42%.
  • Efficiency (%): This converter has an efficiency of 94%, meaning that 94% of the input power is transferred to the output.
  • Maximum ESD Protection Voltage (kV): At CDM (Charged Device Model), this converter offers ESD (Electrostatic Discharge) protection at 0.5kV, while at HBM, it offers protection at 2kV. (Human Body Model).
  • This converter can function at temperatures as low as -40°C, the minimum operating temperature.
  • Maximum Operational Temperature (°C): This converter can function in temperatures as high as 85°C.
  • Supplier Temperature Grade: This product is approved for use in applications requiring industrial temperatures.
  • Packaging: The tape and reel packaging used to transport this product is typical for surface-mount components.
  • Surface-mount mounting is how this device is intended to be mounted.

Test Recommendations

  • The following safety measures should be followed to ensure measurement accuracy:
  • Measure each input and output voltage at the board with the specified test points. This will remove voltage drops that could cause misleading readings across the line and in the load wires.
  • Use precise shunt resistors or series ammeters to measure the input and output current. This is crucial when assessing effectiveness.
  • To measure VOUT Ripple and prevent noise coupling into the probe ground lead, place a balanced impedance probe tip across COUT.

Input and Output Capacitors

The required input capacitance is a 10 uF and a 680pF MLCC capacitor connected in parallel. The EP53F8QI must be positioned next to the 680pF capacitor, which has a lower value. To reduce the physical size of the input AC current loop, both capacitors have been positioned as near as feasible to the device.

For experimenting with the performance of the input filter, there is a pre-tinned pad that accepts an additional MLCC capacitor with the 0805-case size. A minimum of 22uF must be present in the output capacitance. A single 22uF 0805 case size MLCC capacitor is the only component on the evaluation board. A pre-tinned pad on the board can accommodate up to one additional output capacitor with an 0805 case size.


Overall, the EP53F8QI is a cutting-edge DC-DC converter that boasts a thorough power system on silicon, integrated magnetics, and several practical features to ease experimentation and evaluation. The EP53F8QI is a crucial tool for anyone looking to upgrade their power system because of its readily configurable output voltage, test points, and clip leads and the opportunity to add additional input and output capacitors for performance evaluation. The product also includes input decoupling and reverse polarity protection to safeguard the device from frequent setup errors. Upgrade your power system with the EP53F8QI today to take advantage of this revolutionary component. For reliable and high-quality components, ICRFQ is the trusted supplier to purchase from, providing exceptional customer service and excellent products to ensure top-notch results.

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Kevin Chen