LP2982 / Texas Instruments - Datasheet(PDF) Chat AI

LP2982 Datasheet with Chat AI

Hello, Please ask a question about LP2982 Datasheet

# Example questions: ➢ What is the typical input voltage range for the lp2982, as implied by the 'v in = v o(nom) + 1 v' condition used in the typical characteristics graphs?
➢ How does the dropout voltage change with both temperature and load current, and why is this information important when designing a power supply with the lp2982?
➢ What happens to the ground pin current (ignd) as the load current increases and what is this a consideration for in circuit design?

Part No.	LP2982
Manufacturer	TI1
Size	1Mb
Pages	28 pages
Description	Micropower Ultra-Low-Dropout LDO in SOT-23 Package

Datasheet Summary with AI

# LP2982 50-mA Micropower Ultra-Low-Dropout LDO

## Features
️· 2.1-V to 16-V Input Voltage
️· Ultra-Low-Dropout Voltage
️· Ensured 50-mA Output Current
️· Typical Dropout Voltage 180 mV at 80 mA
️· Requires Minimum External Components
️· < 1 μA Quiescent Current When Shut Down
️· Low Ground Pin Current at All Loads
️· Output Voltage Accuracy 1% (A Grade)
️· High Peak Current Capability (150 mA Typical)
️· Wide Supply Voltage Range (16 V Maximum)
️· Low ZOUT 0.3 Ω Typical (10 Hz to 1 MHz)
️· Overtemperature and Overcurrent Protection
️· -40°C to +125°C Junction Temperature Range

## Applications
️· Cellular Phones
️· Palmtop and Laptop Computers
️· Personal Digital Assistants (PDA)
️· Camcorders, Personal Stereos, Cameras

## Description
The LP2982 is a 50-mA, fixed-output voltage LDO designed for ultra-low dropout and lower noise in battery-powered applications. It utilizes a VIP process, delivering performance in key battery-powered design specifications:

️· Dropout Voltage: Typically 120 mV at 50 mA, 7 mV at 1 mA.
️· Ground Pin Current: Typically 375 μA at 50 mA, 80 μA at 1 mA.
️· Sleep Mode: Less than 1 μA quiescent current when the ON/OFF pin is pulled low.
️· Precision Output: 1% tolerance output voltages available (A grade).
️· Low Noise: Output noise can be reduced to 30 μV (typical) with an external bypass capacitor.

## Device Information

Part Number Package Body Size (Nom)

LP2982 SOT-23 (5) 2.90 mm × 1.60 mm

## Electrical Characteristics (Summary)

️· Operating Junction Temperature: -40°C to +125°C
️· Input Supply Voltage: 2.1 V to 16 V
️· Quiescent Current: < 1 μA (Shutdown)
️· Dropout Voltage: 120 mV (at 50 mA) / 7 mV (at 1 mA)
️· Output Current: 50 mA (max)

## Typical Characteristics (Highlights)
️· Dropout voltage vs. Temperature
️· Dropout voltage vs Load Current
️· GND Pin current vs Temperature/Load
️· Input Current vs Vin
️· Line and Load Transient Response
️· Output Noise and Ripple Rejection
️· Turn-On Waveform