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POWER MANAGEMENT BACKDROP
Linear Regulator
  • SKU
    WL2843D
  • Category
    Power Management - LDO GROUP

The WL2843D series are high accuracy, low noise, high speed, high PSRR, low dropout CMOS Linear regulators with high ripple rejection. The devices offer a new level of cost effective performance in cellular phones, laptop and notebook computers, and other portable devices.

The WL2843D has the fold-back maximum output current which depends on the output voltage. So the current limit functions both as a short circuit protection and as an output current limiter.

The WL2843D regulators are available in standard DFN2x2-6L Package. Standard products are Pb-free and Halogen-free.

Applications
– MP3/MP4 Players
– Cellphones, radiophone, digital cameras
– Bluetooth, wireless handsets
– Other portable electronic devices

Input Voltage Range:
1.4V~5.5V

Output Voltage Range:
0.9V~3.3V

Output current:
500 mA

Quiescent current:
50 μA Typ.

Shut-down current:
<1 μA

Dropout voltage:
617 mV @VOUT=1.2V, IOUT=0.5A

PSRR:
80 dB @ 1 kHz, VOUT=1.2V

Low Output Voltage Noise:
20 μVRMS Typ

Output Voltage Tolerance:
±1% @ VOUT>2V

Recommend capacitor:
1 μF

Thermal-Overload and Short-Circuit Protection

  • Spec
    WL2843D
  • Description
    CMOS LDO, High PSRR, High speed, Low noise
  • Vin Min(V)
    1, 4
  • Vin Max(V)
    5
  • Vout(V)
    Fix
  • Output Voltage Min(V)
    0, 9
  • Output Voltage Max(V)
    3
  • Output current 1(mA)
    500
  • Vdrop(mV)
    140mV @Iout=300mA
  • Iq(uA)
    50
  • PSRR(dB) 1KHz
    78