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SKUWL2837D
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CategoryPower 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
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SpecWL2837D
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Output Voltage Max(V)3
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Output Voltage Min(V)0, 9
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DescriptionCMOS LDO, High PSRR, High speed, Low noise
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Iq(uA)50
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Noise(μVRMS)13x VOUT
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Output current 1(mA)500
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PSRR(dB)78
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Vdrop(mV)140 mV @ Iout = 300 mA
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Vin Max(V)5
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Vin Min(V)1, 4
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Vout(V)Fix