L387A Datasheet PDF | STMicroelectronics

STMicroelectronics L387A

The L387A is a very low drop voltage regulator in a Pentawatt® package specially designed to provide stabilized 5V supplies in consumer and industrial applications. This output provides a reset signal when power is applied (after an external programmable delay) and goes low when ABSOLUTE MAXIMUM RATINGS Symbol Vi Tj, Tstg D.C. A reset output makes the L387A particularly suitable for microprocessor systems.

Part No.	L387A
Datasheet	L387A Download
Manufacturer	STMicroelectronics
Description	VERY LOW DROP 5V REGULATOR
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DESCRIPTION

Thanks to its very low input/output voltage drop this device is very useful in battery powered equipment, reducing consumption and prolonging battery life. Input Voltage Junction and Storage Temperature Range Parameter Pentawatt ® ORDERING NUMBER : L387A power is removed, inhibiting the microprocessor. An hysteresis on reset delay capacitor raises the immunity to the ground noise. Value 35 –55 to 150 Unit V °C APPLICATION CIRCUIT * Min 33 µF and max. ESR ≤ 3 Ω over temperature range. October 1991 1/6 L387A PIN CONNECTION (Top views) BLOCK DIAGRAM THERMAL DATA Rth j-c a s e Thermal Resistance Junction-case Max 4 °C/W 2/6 L387A

ELECTRICAL CHARACTERISTICS

(refer to the test circuit, Vi = 14.4 V, Tj = 25 °C, Co = 100 µF; unless otherwise specified) Symbol Vo VI ∆ Vo ∆ Vo VI – Vo Parameter Output Voltage Operating Input Voltage Line Regulation Load Regulation Dropout Voltage Test Conditions Io = 5 mA to 500 mA Tj = 25 °C – 40 ≤ Tj ≤ 125 °C (*), Over Full T Range (– 40 to 125 °C)...