LD39020 Datasheet 200 mA very low quiescent current linear regulator IC Features Input voltage from 1.5 to 5.5 V Ultra low dropout voltage (200 mV typ. at 200 mA load) Very low quiescent current (20 A typ at no load, 0.03 A typ in off mode) DFN4 1x1 SOT23-5L Output voltage tolerance: 0.5 % (A version) or 2.0 % 25 C (standard version) 200 mA guaranteed output current High PSRR (80 dB 1 kHz, 50 db 100 kHz) Wide range of output voltages available on request: from 0.8 V up to 5.0 V in 50 mV step Logic-controlled electronic shutdown Internal soft-start Optional output voltage discharge feature Compatible with ceramic capacitor C = 0.47 F OUT Internal current limit and thermal protections Available in DFN4 1x1 and SOT23-5L packages Operating temperature range: -40 C to 125 C Applications Mobile phones Tablets Maturity status link Digital still cameras (DSC) LD39020 Cordless phones and similar battery-powered systems Portable media players Description The LD39020 high accuracy voltage regulator provides 200 mA of maximum current from an input voltage ranging from 1.5 V to 5.5 V, with a typical dropout voltage of 200 mV. It is available in DFN4 1x1 and SOT23-5L packages, allowing the maximum space saving. The device is stabilized with a ceramic capacitor on the output. The ultra low drop voltage, low quiescent current and low noise features, together with the internal soft- start circuit, make the LD39020 suitable for low power battery-operated applications. An enable logic control function puts the LD39020 in shutdown mode allowing a total current consumption lower than 0.1 A. Constant current and thermal protection are provided. DS9956 - Rev 5 - January 2019 www.st.com For further information contact your local STMicroelectronics sales office.LD39020 Diagram 1 Diagram Figure 2. Block diagram V IN V OUT Bias generator OPAMP EN Enable Thermal protection Bandgap reference * GND AM13852V1 Note: The output discharge MOSFET is optional. DS9956 - Rev 5 page 2/30