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ADP667ANZ
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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 250MA 8-PDIP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Output Configuration：Positive
- Output Type：Adjustable (Fixed)
- Number of Regulators：1
- Voltage - Input (Max)：16.5V
- Voltage - Output (Min/Fixed)：1.3V (5V)
- Voltage - Output (Max)：16V
- Voltage Dropout (Max)：0.35V @ 200mA
- Current - Output：250mA
- Current - Quiescent (Iq)：35 µA
- Current - Supply (Max)：20 mA
- PSRR：-
- Control Features：Enable, Low Battery Detection
- Protection Features：-
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Through Hole
- Package / Case：8-DIP (0.300", 7.62mm)
- Supplier Device Package：8-PDIP
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Overview
The ADP667ANZ is a low-dropout precision voltage regulator manufactured by Analog Devices Inc. It provides a fixed +5 V output or an adjustable range from +1.3 V to +16 V using two external resistors. The device delivers up to 250 mA of output current with a dropout voltage of 150 mV at 200 mA. It operates within an input voltage range of +3.5 V to +16.5 V and features a shutdown mode with quiescent current of 0.2 mA. The component is housed in an 8-pin Plastic DIP (N-8) package and is specified for operation over the industrial temperature range of -40 °C to +85 °C.
Feature Summary
- Provides fixed +5 V or adjustable output voltage via SET pin configuration
- Includes shutdown mode to minimize power consumption
- Features integrated dropout detector and low battery monitoring comparator
- Pin-compatible replacement for MAX667
Applications
- Handheld Instruments
- Cellular Telephones
- Battery Operated Devices
- Portable Equipment
- Solar Powered Instruments
Procurement Notes
Verify part authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as indicated by the Z suffix. Ensure the specific N-8 package option matches design requirements. Check for obsolescence notices or lifecycle changes prior to final procurement decisions.
Selection Notes
Select this component for applications requiring low dropout performance and high output current capability. Consider the thermal resistance limits when designing for high ambient temperatures. Verify that the load capacitor meets the minimum stability requirement of 10 µF. Evaluate the need for external resistor networks if an adjustable output voltage is required.
Part Context
The ADP667 series belongs to Analog Devices' line of low-dropout linear voltage regulators. It is designed for battery-powered systems where efficiency and extended operational life are critical. The device integrates a micropower bandgap reference and error amplifier to maintain precise regulation under varying load conditions.
Replacement Considerations
The ADP667 is explicitly documented as a pin-compatible replacement for the MAX667. Designers transitioning from the MAX667 should verify that the electrical specifications meet their system requirements, particularly regarding dropout voltage and quiescent current characteristics.
FAQ
How is the output voltage adjusted?
The output voltage is adjusted by connecting external resistors to the SET pin. When the SET pin is grounded, the device outputs a fixed +5 V.
What is the function of the DD pin?
The DD pin is the Dropout Detector Output. It indicates when the regulator is approaching dropout conditions by sourcing current as the input-output differential reduces below 300 mV.
How does the shutdown mode work?
Driving the SHDN input to greater than 1.5 V disables the regulator, reducing the quiescent current to less than 1 mA. Connecting SHDN to GND enables normal operation.
