The LD39100 provides 1 A maximum current with an input voltage range from 1.5 V to 5.5 V and a typical dropout voltage of 200 mV. The device is stable with ceramic capacitors on the input and output. The ultra low drop voltage, low quiescent current and low-noise features make it suitable for low power battery-powered applications. Power supply rejection is 70 dB at low frequency and starts to roll off at 10 kHz. Enable logic control function puts the LD39100 in shutdown mode, allowing a total current consumption lower than 1 μA. The device also includes short-circuit constant current limiting and thermal protection.
Input voltage from 1.5 to 5.5 V
Ultra low-dropout voltage (200 mV typ. at 1 A load)
Very low quiescent current (20 μA typ. at no load, 200 μA typ. at 1 A load, 1 μA max. in off mode)
Very low-noise with no bypass capacitor (30 μ VRMSat VOUT= 0.8 V)
Output voltage tolerance: ± 2.0% @ 25 °C
1 A guaranteed output current
Wide range of output voltages available on request: 0.8 V to 4.5 V with 100 mV step and adjustable from 0.8 V