MIC2196BM-TR

Frequency - Switching:	400kHz
Base Part Number:	MIC2196
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Enable
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	85%
Series:	--
Voltage - Supply (Vcc/Vdd):	2.9 V ~ 14 V
Output Phases:	1
Number of Outputs:	1
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Output Type:	Transistor Driver
Part Status:	Discontinued at Digi-Key
Packaging:	Tape & Reel (TR)

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The MIC2196BM-TR is a chip for a DC to DC switched controller. It is an ideal choice for those who need to create a voltage conversion between a low voltage DC power source, such as a battery, and a higher voltage DC. It is packaged in a small 8-pin MSOP or 8-pin SOIC and designed to ensure high efficiency and improved power management. It is suitable for a broad range of application settings.

Application Fields

The MIC2196BM-TR is suitable for use in a vast range of DC-DC applications. It can be used to create an adjustable step-down (buck) converter, or a step-up (boost) converter for applications requiring a higher voltage. It can also be used in combination with an inductor to create an adjustable linear regulator. It is ideal for use in personal computer and consumer electronics, such as laptop computers, mobile phones, and digital cameras, as well as automotive applications.

Working Principle

The MIC2196BM-TR has an ON/OFF control input pin which can be used to control the switching ON/OFF of the chip. It is also provided with a voltage-controlled input pin used to regulate the output voltage by using a reference voltage. The chip is designed to switch frequencies up to 500 kHz while consuming very little power. The integrated power MOSFET has the ability to sustain peak loads coupled with low RDS(ON).

When power is first supplied to the chip, an internal delay circuit is initiated, which will gradually ramp up the switching frequency and duty cycle to the desired values. The duty cycle is then adjusted to maintain the output voltage at the desired level. The current sense control pin of the chip is used to determine the maximum output current, and it will reduce the duty cycle accordingly when the output current exceeds the threshold value.

The MIC216BM-TR is also equipped with a hysteresis control circuit which monitors the temperature at the switching element so that the operating frequency can be adjusted to keep the temperature within a safe range. It also has a short-circuit protection circuit which is activated when the output current exceeds a predetermined limit.

The MIC2196BM-TR is an integral part of any DC-DC converter and provides a robust, efficient solution for powering applications with changing demand. With its combination of low power consumption and high performance, it is well-suited for a wide range of applications.

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