Specifications- Linear LDO regulator with 4.75V output
- 500mA output current capability
- 500mA peak in SOT-23 package
- 500mV maximum dropout voltage at full load
- 150mV maximum dropout at 150mA load
- Excellent line and load regulation
- Stable with low ESR output capacitor
- Ultra low noise with optional bypass capacitor
- Fast power-up with bypass capacitor
- "Zero" current in Shutdown mode
- Thermal overload protection
- Foldback current limiting protection
- Reverse current protection
- Lead-free version available
DescriptionThe CM3016-48 is a CMOS linear voltage regulator with low quiescent current, very low drop out voltage and better than 1% initial output voltage accuracy. The quiescent current is typically 150mA at light loads and only 165mA at 500mA. This is 5% more efficient than equivalent Bi-CMOS devices that can waste up to 25mA at 500mA load. The CM3016-48 can maintain load regulation for peak currents up to 500mA, which is useful for supplying inrush currents during power-up and transient conditions. Continuous output current is limited by package type and board layout.
A dedicated control input (EN, Active High) has been included for power-up sequencing flexibility. When this input is taken low, CM3016 regulator is disabled. In this state, the supply current will drop to near zero. The device also features reverse current protection. This protects the device by blocking the pass transistors parasitic diode when the output voltage is forced higher than the input.
For low noise performance and increased power supply ripple rejection a noise bypass capacitor can be connected to the BYP pin. Connecting this capacitor will not significantly delay the speed of power-up.
The CM3016-48 is fully protected, offering both overload current limiting and high temperature thermal shutdown. To reduce board cost and layout size, the CM3016 was designed to be stable with or without an output capacitor. This includes tiny, low ESR ceramic capacitors.
The CM3016-48 is available in a 5-pin SOT23 package and is ideal for space critical applications. It is available with optional lead-free finishing.
CM3016 Data Sheet
