MCP1703AT-4002E/MB

Current - Output:	250mA
Base Part Number:	MCP1703A
Supplier Device Package:	SOT-89-3
Package / Case:	TO-243AA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	--
PSRR:	35dB (100Hz)
Current - Quiescent (Iq):	5µA
Series:	--
Voltage Dropout (Max):	0.725V @ 250mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	4V
Voltage - Input (Max):	16V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

MCP1703 AT-4002E/MB Application Field and Working Principle

PMIC, or power management integrated circuits, are essential components in modern electronics. One of the most important types of PMICs are voltage regulators, which manage power flow in a system by using input voltage to output desired voltage levels to various components. Voltage regulators are either monolithic or direct-acting, depending on the application. Monolithic regulators consist of transistors, capacitors, and resistor networks, all integrated on one chip. Direct-acting voltage regulators, on the other hand, include only one active component, such as a voltage divider.MCP1703AT-4002E/MB is a low-power, highly efficient, monolithic voltage regulator typically used in battery-operated portable electronic devices. It offers excellent load and line regulations, high power supply rejection ratios, and thermal shutdown protection.

Features and Benefits

The MCP1703AT-4002E/MB boasts several beneficial features:• ±2% output accuracy over the full range of -Vin to 6.0 V• Low quiescent current: 0.4 to 1.5 mA for Vout = 5.0 V, 0.5 to 3.2 mA for Vout = 3.3 V• Wide input voltage range: -Vin to 6.0 V• High power supply rejection ratio of 84 dB at 1 kHz• Thermal shutdown• Simple remote output voltage sensing• Self-contained, two-resistor loop• Current limitedThese features make the MCP1703AT-4002E/MB an attractive voltage regulator option in portable applications.

Working Principle of MCP1703AT-4002E/MB

The MCP1703AT-4002E/MB is a monolithic voltage regulator with an internal PNP transistor. It uses a two-resistor loop to provide a stable output voltage. The voltage loop consists of a voltage divider, current mirrors, and a bias current source.At start-up, the internal bias current source charges up the output divider. As the output voltage rises, the current mirrors control the output voltage. When the output voltage reaches its predetermined level, the internal PNP transistor reduces the current through the divider, thus preventing the output voltage from rising further.The MCP1703AT-4002E/MB also includes current limit protection, which helps prevent damage to the device in the event of a fault. The current is limited to a safe level until the fault is cleared.

Applications

The MCP1703AT-4002E/MB has wide application in areas such as energy harvesting, personal health and wearables, telecommunication applications, and portable/hand-held devices that require long battery life and high efficiency.Since its quiescent current is low, the MCP1703AT-4002E/MB is especially useful in applications that require a low power source. Its thermal shutdown protection feature makes it well-suited for use in high ambient temperature environments.

Conclusion

The MCP1703AT-4002E/MB is a low-power, highly efficient, monolithic voltage regulator. It offers excellent load and line regulations, high power supply rejection ratios, and thermal shutdown protection. It has a wide input voltage range and output accuracy of ±2%, making it an attractive option for portable and hand-held devices. The low quiescent current and current limit protection also make it an ideal choice for energy harvesting and telecommunication applications.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description