AP1186K5-33L-U

Voltage Dropout (Max):	0.38V @ 1.5A
Base Part Number:	AP1186
Supplier Device Package:	TO-263-5
Package / Case:	TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 150°C
Protection Features:	Over Current, Over Temperature
Control Features:	--
PSRR:	70dB (120Hz)
Current - Output:	1.5A
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Voltage - Input (Max):	16V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tube

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Introduction

PMIC (Power Management Integrated Circuit) Voltage Regulators - Linear are electronic circuits used to maintain a certain level of constant voltage, regardless of input voltage fluctuations. They are especially useful for portable electronic devices, as portable batteries tend to lose juice over time. The AP1186K5-33L-U is such a voltage regulator, available in the form of a small 8-pin chip, capable of providing up to 1000mA of output current at up to 19V.

Application Field

AP1186K5-33L-U Voltage Regulators are ideal for portable electronic devices, or any applications which may require a constant voltage despite input voltage fluctuations. The chip also has excellent protection features, being able to withstand reverse polarity, short-circuit, over temperature, and over current conditions.AP1186K5-33L-U is also suitable for use in medical applications such as pacemakers, medical pumps, and other implantable medical devices. The chip’s wide input voltage range and compact form factor make it a suitable candidate for such applications.

Features and Specifications

The AP1186K5-33L-U features an extended input voltage range of 3.0V to 19V, as well as a maximum output current of 1000mA. The chip also has several integrated protection features, including reverse polarity protection, short-circuit protection, over temperature protection, and over current protection. The chip’s output voltage accuracy is +1.5%, and it has a low standby current of 160uA. The chip is based on an advanced BiCMOS technology, and is capable of working at frequencies of up to 4MHz.

Working Principle

The AP1186K5-33L-U has a charge pump voltage regulator design with a feedback loop. The chip integrates two power transistors, together with Schottky diodes and a voltage divider, to regulate the output voltage. The chip uses the principle of negative feedback to ensure a stable output voltage, regardless of input voltage or load changes.The chip’s feedback loop compares the actual output voltage to a reference voltage, and adjusts the output voltage accordingly. The reference voltage is derived from two external resistors connected to the voltage divider. When the output voltage is greater than the reference voltage, the chip reduces the output voltage, and vice versa. This helps the AP1186K5-33L-U maintain a constant output voltage, despite fluctuations in the input voltage.

Conclusion

The AP1186K5-33L-U is a compact 8-pin linear voltage regulator, ideal for use in portable electronic devices and medical applications. The chip has a wide input voltage range, and is capable of providing up to 1000mA of output current and +1.5% accuracy. The chip’s negative feedback and advanced BiCMOS technology make it capable of operating at frequencies of up to 4MHz, with excellent protection against reverse polarity, short-circuits, over temperature, and over current conditions.

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