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FAN53745UC00X The FAN53745UC00X from On Semiconductor is a 1A synchronous step-down buck regulator. It operates with an input voltage range of 2.3V to 5.5V and a switching frequency of 3.33MHz.
Mfr Part #:

FAN53745UC00X

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
The FAN53745UC00X from On Semiconductor is a 1A synchronous step-down buck regulator. It operates with an input voltage range of 2.3V to 5.5V and a switching frequency of 3.33MHz.
✓ Total Stock: 6,000 pcs
$ Price Range: $0.16

FAN53745UC00X Available from 1 distributor

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✓ Non-Authorised
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Flip Electronics ✓
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6,000 pcs
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FAN53745UC00X Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Frequency
Function
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Type
Output Voltage
Supplier Device Package
Supplier Package
Synchronous Rectifier
Topology
Voltage
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FAN53745UC00X Description

Short technical summary and product information.

The FAN53745UC00X is a synchronous buck regulator manufactured by On Semiconductor, designed for step-down DC/DC conversion. It offers a 1A load capability and operates efficiently with a fixed switching frequency of 3.33MHz. The device supports a wide input voltage range from 2.3V to 5.5V, making it suitable for various portable applications.

 

This regulator features programmable output voltage capabilities, ranging from 0.9V to 3.3V, and a programmable current limit. It includes internal soft-start and protection faults such as over-temperature, input undervoltage lockout, output short, and reverse current protection. The FAN53745UC00X is designed for high efficiency, operating in both PWM and PFM modes depending on the load conditions.

 

Packaged in a compact 6-bump, 0.4mm pitch Wafer-Level Chip-Scale Package (WLCSP), this component is ideal for space-constrained designs. It is suitable for surface mount applications and is Pb-Free and RoHS compliant. The device also features an I2C-compatible interface for control and configuration.

 

Key applications for the FAN53745UC00X include smart phones, smart watches, health monitoring devices, sensor drive circuits, energy harvesting systems, and utility and safety modules.

FAN53745UC00X Quick Information

Product Type: Buck Regulator
Canonical Name: FAN53745UC00X Synchronous Buck Regulator
Subcategory: Buck Regulator

FAN53745UC00X Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

FAN53745UC00X Estimated Pricing

Qty Low High
1+ $0.16 $0.16

Estimated market price range - modelled values for guidance only, not live distributor offers.

FAN53745UC00X Features

  • Synchronous buck regulator with 1A capability.
  • Wide 2.3V to 5.5V input voltage range.
  • Programmable output voltage from 0.9V to 3.3V.
  • 3.33MHz fixed switching frequency.
  • Compact 6-WLCSP package for space savings.

FAN53745UC00X Applications

  • Ideal for smart phones and smart watches.
  • Suitable for health monitoring devices.
  • Powers sensor drive circuits effectively.
  • Used in energy harvesting applications.
  • Applicable to utility and safety modules.

FAN53745UC00X FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the FAN53745UC00X?

2.3 V to 5.5 V.

What is the output voltage range?

Programmable from 0.9 V to 3.3 V.

What is the output current rating?

1 A.

What is the switching frequency?

3.33 MHz.

What is the operating temperature range?

-25°C to 85°C.

What package does the FAN53745UC00X come in?

6-WLCSP (1.38x0.94 mm).

Is the current limit programmable?

Yes, programmable from 440 mA to 2090 mA.

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