POWER MANAGEMENT BACKDROP
Linear Regulator
  • SKU
    WL2837D
  • Category
    Power Management - LDO GROUP

The WL2837D 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 WL2837D 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 WL2837D regulators are available in standard DFN1x1-4L 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: 526 mV @ VOUT = 1.1V, IOUT = 0.5A

PSRR: 78 dB @ 1 kHz, VOUT = 1.05V

Low Output Voltage Noise: 20 μVRMS Typ

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

Recommend capacitor: 1 μF

Thermal-Overload and Short-Circuit Protection

  • Spec
    WL2837D
  • Output Voltage Max(V)
    3
  • Output Voltage Min(V)
    0, 9
  • Description
    CMOS LDO, High PSRR, High speed, Low noise
  • Iq(uA)
    50
  • Noise(μVRMS)
    13x VOUT
  • Output current 1(mA)
    500
  • PSRR(dB)
    78
  • Vdrop(mV)
    140 mV @ Iout = 300 mA
  • Vin Max(V)
    5
  • Vin Min(V)
    1, 4
  • Vout(V)
    Fix
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