LDO Regulator, 500 mA, Low Iq, High PSRR, Low Noise

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Overview

The FAN25800 is a linear low-dropout regulator with a high PSRR (85 dB at 100 Hz) and low output noise (typically 8 µVRMS over a 10 Hz to 100 kHz bandwidth). The LDO can provide up to 250 mA of output current for 2.8 V output and up to 500 mA of output current for 3.3 V output.
The enable control pin can be used to shut down the device and disconnect the output load from the input. During shutdown, the supply current drops below 1 µA.
The FAN25800 is designed to be stable with space-saving ceramic capacitors as small as 0201 case size. The FAN25800 is available in a 4-bump, 0.35 mm pitch, WLCSP package.

  • VIN: 2.3 V to 5.5 V
  • VOUT = 3.3 V (IOUT Max. = 500 mA)
  • VOUT = 2.8 V (IOUT Max. = 250 mA)
  • Output Noise Density at 250 mA and 10 kHz = 19 nV/√Hz (Integrated 8 µVrms)
  • Low IQ of 17 µA in Regulation and Low-IQ Dropout Mode with Optimized Dropout Transitions
  • <70 mV Dropout Voltage at 250 mA Load
  • Controlled Soft-Start to Reduce Inrush Current
  • Thermal Shutdown Protection (TSD)
  • Input Under-Voltage Lockout (UVLO)
  • Short-Circuit Protection (SCP)
  • Stable with Two 1.5 µF, 0201 Ceramic Capacitors at VOUT
  • 4-Ball WLCSP, 0.65 mm x 0.65 mm, 0.35 mm Pitch, Plated Solder, 330 µm Maximum Thickness

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ECAD Models

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Output

Polarity

VO (V)

IO Typ (A)

VI Min (V)

VI Max (V)

VDO Typ (V)

Iq Typ (mA)

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Noise (µVrms)

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Pricing ($/Unit)

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FAN25800AUC28X

Obsolete

Pb

A

H

P

WLCSP-4

1

260

REEL

3000

N

Single

Positive

2.8

0.5

2.3

5.5

-

0.65

76

25

Yes

No

-

Price N/A

More Details

FAN25800AUC33X

Obsolete

Pb

A

H

P

WLCSP-4

1

260

REEL

3000

N

Single

Positive

3.3

0.5

2.3

5.5

-

0.65

76

25

Yes

No

-

Price N/A

More Details

FAN25800AUCF27X

Obsolete

Pb

A

H

P

WLCSP-4

1

260

REEL

3000

N

Single

Positive

2.7

0.5

2.3

5.5

-

0.65

76

25

Yes

No

-

Price N/A

More Details

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