MIC5337 Series

Single 300mA Low Iq ULDO with Auto Discharge

Catalog

Single 300mA Low Iq ULDO with Auto Discharge

Part	Package / Case	Voltage - Output (Min/Fixed)	Protection Features	Control Features	PSRR [Min]	PSRR [Max]	Output Type	Output Configuration	Current - Output	Mounting Type	Supplier Device Package	Voltage Dropout (Max) [Max]	Voltage - Input (Max) [Max]	Current - Quiescent (Iq)	Operating Temperature [Max]	Operating Temperature [Min]	Number of Regulators
Microchip Technology MIC5337-1.8YMT-TR	4-TMLF® 4-UFDFN Exposed Pad	1.8 V	Over Current Over Temperature	Enable	50 dB	65 dB	1.81 mOhm	Positive	300 mA	Surface Mount	4-TMLF® (1.2x1.6)	0.3 V	5.5 V	35 µA	125 °C	-40 °C	1

Catalog

Single 300mA Low Iq ULDO with Auto Discharge

Key Features

• * 300mA output current

• * Low IQ: only 24µA operating current

• * Low dropout voltage: 180mV at 300mA

• * Active discharge when enable pin is low

• * Input voltage range: 2.3V to 5.5V

• * Fixed output voltages

• * Stable with 1µF ceramic capacitors

• * Thermal shutdown and current limit protection

Description

The MIC5337 is a low quiescent current, low dropout regulator with an internal auto-discharge feature designed for optimal performance in a small space. The MIC5337 is capable of sourcing 300mA of output current while only consuming 24µA of operating current. When the MIC5337 is disabled, an internal resistive load is automatically applied to the output capacitor to discharge it. This high performance LDO offers fast transient response as well as maintaining a high PSRR. The MIC5337 is an ideal solution for battery-operated applications due to ultra-low operating current and extremely low dropout voltage of 180mV at 300mA. Equipped with a TTL logic-compatible enable pin, the MIC5337 can be put into a zero off-mode current state, drawing virtually no current when disabled. Board space and component cost is minimized because the MIC5337 operates with very small 1µF ceramic capacitors, provides fixed output voltages,