LP3990MFX-3.3/NOPB

The LP3990 regulator is designed to meet the requirements of portable, battery-powered systems providing an accurate output voltage, low-noise, and low-quiescent current. The LP3990 will provide a 0.8 - V output from the low input voltage of ₂V at up to a 150-mA load current. When switched into shutdown mode via a logic signal at the enable pin (EN), the power consumption is reduced to virtually zero. The LP3990 is designed to be stable with space - saving ceramic capacitors with values as low as 1 μF. Performance is specified for a -40°C to 125°C junction temperature range.

Applications

• Cellular Handsets
• Hand-Held Information Appliances

Key features

• 1% Voltage Accuracy at Room Temperature
• Stable with Ceramic Capacitor
• Logic Controlled Enable
• No Noise Bypass Capacitor Required
• Thermal-Overload and Short-Circuit Protection
• Input Voltage Range, ₂V to 6 V
• Output Voltage Range, 0.8 V to 3.3 V
• Output Current, 150 mA
• Output Stable - Capacitors, 1 μF
• Virtually Zero IQ (Disabled), <10 nA
• Very Low IQ (Enabled), 43 μA
• Low Output Noise, 150 μV RMS
• PSRR, 55 dB at 1 kHz
• Fast Start-Up, 105 μs