AS13986 Low-Dropout IC

Description

The AS13986 dual low-dropout regulator provides up to 150mA at each output using a 2.5V to 5.5V input voltage. The ultra-low dropout voltage, low quiescent current, and low noise make the AS13986 perfect for low-power, battery-operated applications.

Regulator ground current increases only slightly in dropout, extending the battery life in low-power applications.

The device features excellent power supply rejection (55dB @ 1kHz and 50dB at 10kHz). The high power supply rejection is maintained down to low input voltage levels used in battery operated devices.

Integrated shutdown logic control function is available for each output. In cases where the device is used as a local regulator, it is possible to switch some of the circuitry into standby mode, thus decreasing total power consumption.

The AS13986 was specifically designed to work with low-ESR ceramic capacitors.

The AS13986 is available in a 8-pin WLP package.

Key Features

• Input Voltage: 2.5V to 5.5V
• Dual Output Voltages
• Ultra-Low Dropout Voltage: 45mV @ 150mA Load, 0.3mV @ 1mA Load
• Very Low Quiescent Current: 135μA @ No Load, 255μA @ 150mA Load, 2μA In Off Mode
• Guaranteed Output Current up to 150mA
• Fast Turn-On Time: 160μs (COUT = 1μF, CBYPASS = 10nF, IOUT = 1mA)
• Logic-Controlled Shutdown
• Integrated Current-Limit and Thermal Overload Protection
• Output Low-Noise Voltage: 30μVRMS (10Hz to 100kHz)
• Supply Voltage Rejection: 55dB @ 1kHz, 50dB @ 10kHz
• Stable With Low-ESR Ceramic Capacitors
• Temperature Range: -40ºC to 125ºC
• 8-pin WLP Package

Applications

The AS13986 is ideal for powering cordless and mobile phones, MP3 players, CD and DVD players, PDAs, handheld computers, digital cameras, and any other hand-held battery-powered device.

Block diagram for AS13986 Low-Dropout IC