3.0A, 2.4MHz, Digitally Programmable TinyBuck® Regulator

Favorite

Overview

The FAN53525 is a step-down switching voltage regulator that delivers a digitally programmable output from an input voltage supply of 2.5 V to 5.5 V. The output voltage is programmed through an I2C interface capable of operating up to 3.4 MHz.
Using a proprietary architecture with synchronous rectification, the FAN53525 is capable of delivering 3.0 A continuous at over 80% efficiency, maintaining that efficiency at load currents as low as 10 mA. The regulator operates at a nominal fixed frequency of 2.4 MHz, which reduces the value of the external components to 330 nH for the output inductor and as low as 20 µF for the output capacitor. Additional output capacitance can be added to improve regulation during load transients without affecting stability, allowing inductance up to 1.2 µH to be used.
At moderate and light loads, Pulse Frequency Modulation (PFM) is used to operate in Power-Save Mode with a typical quiescent current of 50 µA at room temperature. Even with such a low quiescent current, the part exhibits excellent transient response during large load swings. At higher loads, the system automatically switches to fixed-frequency control, operating at 2.4 MHz. In Shutdown Mode, the supply current drops below 1 µA, reducing power consumption. PFM Mode can be disabled if fixed frequency is desired. The FAN53525 is available in a 15-bump, 1.310 mm x 2.015 mm, 0.4 mm ball pitch WLCSP.

  • Fixed-Frequency Operation: 2.4 MHz
  • Best-in-Class Load Transient
  • Continuous Output Current Capability: 3.0 A
  • 2.5 V to 5.5 V Input Voltage Range
  • Digitally Programmable Output Voltage:
  • 0.600 V to 1.39375 V in 6.25 mV Steps
  • Programmable Slew Rate for Voltage Transitions
  • I2C-Compatible Interface Up to 3.4 Mbps
  • PFM Mode for High Efficiency in Light Load
  • Quiescent Current in PFM Mode: 50 µA (Typical)
  • Input Under-Voltage Lockout (UVLO)
  • Thermal Shutdown and Overload Protection
  • 15-Bump Wafer-Level Chip Scale Package (WLCSP)

Search

Close Search

Products:

2

Expand Table

Collapse Table

Share

Export

Compare

Columns

0

Product Groups:

Orderable Parts:

2

Product

Status

ECAD Models

Compliance

Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

Topology

Control Mode

VCC Min (V)

VCC Max (V)

VO Typ (V)

IO Typ (A)

Efficiency (%)

fSW Typ (kHz)

Pricing ($/Unit)

Loading...

FAN53525UC96X

Active

Pb

A

H

P

WLCSP-15

1

260

REEL

3000

Y

Step-Down

-

2.5

5.5

Adjustable

3

80

2400

$0.345

More Details

FAN53525UC48X

Obsolete

Pb

A

H

P

WLCSP-15

1

260

REEL

3000

N

Step-Down

-

2.5

5.5

Adjustable

3

80

2400

Price N/A

More Details

Show More

1-25 of 25

Products per page

Jump to :