Microchip Technology

MIC2193 is a high efficiency, PWM synchronous buck control IC housed in the SO-8 package. Its 2.9V to 14V input voltage range allows it to efficiently step down voltages in 3.3V, 5V, and 12V systems as well as 1- or 2-cell Li-Ion battery powered applications. The MIC2193 solution saves valuable board space. The device is housed in the space-saving SO-8 package, whose low pin-count minimizes external components. Its 400kHz PWM operation allows a small inductor and small output capacitors to be used. The MIC2193 can implement all-ceramic capacitor solutions. The MIC2193 drives a high-side P-Channel MOSFET, eliminating the need for high-side boot-strap circuitry. This feature allows the MIC2193 to achieve maximum duty cycles of 100%, which can be useful in low headroom applications. A low output driver impedance of 4ω allows the MIC2193 to drive large external MOSFETs to generate a wide range of output currents. The MIC2193 is available in an 8-pin SOIC package with a junction temperature range of -40°C to +125°C.

MIC2196 is a high efficiency PWM boost control IC housed in the SO-8 package. The MIC2196 is optimized for low input-voltage applications. With its wide input voltage range of 2.9V to 14V, the MIC2196 can be used to efficiently boost voltages in 3.3V, 5V, and 12V systems, as well as 1- or 2-cell Li-Ion battery powered applications. Its powerful 2Ω output driver allows the MIC2196 to drive large external MOSFETs. The MIC2196 is ideal for space-sensitive applications. The device is housed in the space-saving SO-8 package, whose low pin-count minimizes external components. Its 400kHz PWM operation allows a small inductor and small output capacitors to be used. The MIC2196 can implement all-ceramic capacitor solutions. Efficiencies over 90% are achievable over a wide range of load conditions with the MIC2196's PWM boost control scheme. Its fixed frequency PWM architecture also makes the MIC2196 is ideal for noise-sensitive telecommunications applications. MIC2196 features a low current shutdown mode of 1µA and programmable undervoltage lockout. The MIC2196 is available in an 8-pin SOIC package with a junction temperature range from -40°C to +125°C.

The MIC2199 is a high power 300kHz synchronous buck DC-to-DC controller. The MIC2199 operates from a wide 4.5V to 32V input and can be programmed for output voltages from 0.8V to 6V. The wide input voltage capability makes the MIC2199 an ideal solution for point-of-load DC-to-DC conversion in 5V, 12V, 24V, and 28V systems. The 300kHz switching frequency allows the use of a small inductor and small output capacitors. The current mode PWM control along with the external COMP pin allows for ease of stability compensation and fast transient response across a wide range of applications. An all N-Channel synchronous architecture and powerful output drivers allow up to 20A of output current capability. For smaller external components, refer to the 500kHz MIC2198. The MIC2199 is available with a junction temperature range from -40°C to 125°C.

The MIC21LV32 is an advanced constant on-time, dual phase synchronous buck controller featuring a unique adaptive ON-time control architecture with stackable feature up to 8 phases. The MIC21LV32 operates over an input supply range from 4.5V to 36V and can be used in application requiring up to 50A of output current. The output voltage is adjustable down to 0.6V with a guaranteed accuracy of ±1% over the entire operating or ±0.5% for -40 to 105 degrees C temperature range . The device operates with programmable switching frequency from 100 kHz to 1MHz per phase. The Hyper Speed Control® architecture supports ultrafast transient response under medium to heavy loads. The soft start is also programmable externally with a capacitor, thus enabling safe start-ups into heavy loads. The MIC21LV32 has a remote sense amplifier for accurate output voltage control. The MIC21LV32 offers a full suite of protection features to ensure protection of the IC during various fault conditions. These include under-voltage lockout (UVLO) to ensure proper operation under power-sag conditions, hiccup mode short-circuit protection and thermal shutdown. The MIC21LV32 is available in a 32-pin 5mm x 5mm VQFN package with a –40°C to +125°C junction operating temperature range

The MIC21LV33 is a constant on-time, dual phase synchronous buck controller featuring a unique adaptive ON-time control architecture with Hyperlight Load® and phase shedding features. The MIC21LV33 operates over an input supply range from 4.5V to 36V and can be used to supply up to 50A of output current. The input voltage could be lowered to 2V provided that an external VDD of 5V is provided. The output voltage of the MIC21LV33 is adjustable down to 0.6V with a guaranteed accuracy of ±1% over the entire operating temperature. The reference accuracy is also guaranteed to ±0.5% over a limited temperature range of -–40°C to +105°C. The MIC21LV33 operates with programmable switching frequency from 100kHz to 1MHz per phase. The Hyper Speed Control® architecture supports ultrafast transient response under medium to heavy load conditions. The soft start is also programmable externally with a capacitor, thus enabling safe start-ups into heavy loads. The MIC21LV33 has a remote sense amplifier for accurate output voltage control as well as user selectable automatic phase shedding for improved efficiency at medium loads. The controller offers a droop feature for enabling adaptive voltage scaling and control to improve load transient response The MIC21LV33 offers a full suite of protection features to ensure protection of the IC during fault conditions. These include under-voltage lockout to ensure proper operation under power-sag conditions, programmable soft start to reduce inrush current, overvoltage discharge, hiccup mode short-circuit protection and thermal shutdown. The MIC21LV33 is available in a 32-pin 5mm x 5mm VQFN package with a –40°C to +125°C junction operating temperature range.

The MIC2202 is a high efficiency, 2MHz PWM synchronous buck regulator. The fast 2MHz operation along with a proprietary compensation scheme allows the smallest possible external components. The MIC2202 can operate with a 1µF ceramic output capacitor and a small, low DC-resistance, 2.2µH inductor, reducing system size and cost while allowing a high level of efficiency. The MIC2202 operates from 2.3V to 5.5V input and features internal power MOSFETs that can supply over 600mA of output current with output voltages down to 0.5V. The MIC2202 implements a constant 2MHz pulse- width-modulation (PWM) control scheme which reduces noise in sensitive RF, audio, and communications applications. Additionally, the MIC2202 can be synchronized to an external clock, or multiple MIC2202s can easily be daisy-chained with the SYNCLOCK feature. The MIC2202 has a high bandwidth loop (up to 500kHz) which allows ultra fast transient response times. This is very useful when powering applications that require fast dynamic response such as CPU cores and RF circuitry in high performance cellular phones and PDAs. The MIC2202 is available in 10-pin MSOP package options with an operating junction temperature range from -40°C to +125°C

The MIC2203 is a high efficiency 1MHz PWM synchronous buck switching regulator. The MIC2203 features low noise constant frequency PWM operation with a low dynamic supply current of <1mA. The low noise and efficient operation both make the MIC2203 well suited for sensitive RF, and audio power applications. The MIC2203 operates from 2.3V to 5.5V input and can supply over 300mA of output current with output voltages down to 0.5V. Additionally, the MIC2203 can be synchronized to an external clock, or multiple MIC2203s can easily be daisy-chained with the SYNCLOCK feature. The MIC2203 has a high loop bandwidth with corresponding ultra fast transient response times. This reduces the output capacitor size, and is very useful when powering applications that require fast dynamic response such as CPU cores and RF circuitry in high performance cellular phones and PDAs. The MIC2203 is available in 10-pin MSOP package with an operating junction temperature range from -40°C to 125°C.