6MHz, 600mA / 750mA Synchronous Buck Regulator

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Overview

The FAN5361 is a 600mA or 750mA, step-down, switching voltage regulator that delivers a fixed output from an input voltage supply of 2.3V to 5.5V. Using a proprietary architecture with synchronous rectification, the FAN5361 is capable of delivering a peak efficiency of 92%, while maintaining efficiency over 80% at load currents as low as 1mA.
The regulator operates at a nominal fixed frequency of 6MHz, which reduces the value of the external components to 470nH for the output inductor and 4.7µF for the output capacitor. The PWM modulator can be synchronized to an external frequency source.
At moderate and light loads, pulse frequency modulation is used to operate the device in Power-Save Mode with a typical quiescent current of 35µA. 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 6MHz. In Shutdown Mode, the supply current drops below 1µA, reducing power consumption. For applications that require minimum ripple or fixed frequency, PFM Mode can be disabled using the MODE pin.
The FAN5361 is available in 6-bump, 0.4mm pitch, Wafer-Level Chip-Scale Package (WLCSP) and a 6-lead 2 x 2mm ultra-thin MLP package (UMLP).

  • TBA
  • 6MHz Fixed-Frequency Operation
  • 35µA Typical Quiescent Current
  • Best-in-Class Load Transient Response
  • Best-in-Class Efficiency
  • 600mA or 750mA Output Current Capability
  • 2.3V to 5.5V Input Voltage Range
  • 1.0 to 1.82V Fixed Output Voltage
  • Low Ripple Light-Load PFM Mode
  • Forced PWM and External Clock Synchronization
  • Internal Soft-Start
  • Input Under-Voltage Lockout (UVLO)
  • Thermal Shutdown and Overload Protection
  • 6-bump WLCSP, 0.4mm Pitch
  • 6-pin 2 x 2mm UMLP

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6

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)

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FAN5361UMP15X

Lifetime

Pb

A

H

P

UDFN-6

1

260

REEL

3000

N

Step-Down

Voltage Mode

2.3

5.5

1.5

0.6

92

6000

$0.4452

More Details

FAN5361UC182X

Lifetime

Pb

A

H

P

WLCSP-6

1

260

REEL

3000

N

Step-Down

Voltage Mode

2.3

5.5

1.82

0.6

92

6000

$0.2875

More Details

FAN5361UMP123X

Lifetime

Pb

A

H

P

UDFN-6

1

260

REEL

3000

N

Step-Down

Voltage Mode

2.3

5.5

1.23

0.6

92

6000

$0.391

More Details

FAN5361UC19X

Obsolete

Pb

A

H

P

WLCSP-6

1

260

REEL

3000

N

Step-Down

Voltage Mode

2.3

5.5

1.9

0.6

92

6000

Price N/A

More Details

FAN5361UMP182X

Lifetime

Pb

A

H

P

UDFN-6

1

260

REEL

3000

N

Step-Down

Voltage Mode

2.3

5.5

1.82

0.6

92

6000

$0.391

More Details

FAN5361UC123X

Obsolete

Pb

A

H

P

WLCSP-6

1

260

REEL

3000

N

Step-Down

Voltage Mode

2.3

5.5

1.23

0.6

92

6000

Price N/A

More Details

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