LP3996

LP3996 www.ti.com SNVS360D – NOVEMBER 2006 – REVISED OCTOBER 2013 LP3996 Dual Linear Regulator with 300 mA and 150 mA Outputs and Power-On-Reset Check for Samples: LP3996 FEATURES 1 2 2 LDO Outputs with Independent Enable 1.5% Accuracy at Room Temperature, 3% Over Temperature Power-On-Reset Function with Adjustable Delay Thermal Shutdown Protection Stable with Ceramic Capacitors KEY SPECIFICATIONS Input Voltage Range 2.0V to 6.0V Low Dropout Voltage 210 mV at 300 mA Ultra-Low IQ (Enabled) 35 µA Virtually Zero IQ (Disabled) <10 nA Package Available in Lead-Free Option 10-pin 3 mm x 3 mm APPLICATIONS Cellular Handsets PDAs Wireless Network Adaptors DESCRIPTION The LP3996 is a dual low dropout regulator with power-on-reset circuit. The first regulator can source 150 mA, while the second is capable of sourcing 300 mA and has a power-on-reset function included. The LP3996 provides 1.5% accuracy requiring an ultra low quiescent current of 35 µA. Separate enable pins allow each output of the LP3996 to be shut down, drawing virtually zero current. The LP3996 is designed to be stable with small footprint ceramic capacitors down to 1 µF. An external capacitor may be used to set the POR delay time as required. The LP3996 is available in fixed output voltages and comes in a 10-pin, 3 mm x 3 mm package. Typical Application Circuit VIN EN1 EN2 470 k: LP3996 VIN VOUT1 EN1 VOUT2 EN2 POR CBYP 1 PF 10 nF GND SET Sets delay for POR VOUT1 VOUT2 POR 1 ...