MIC2193 Series

14V, 400 KHz Synchronous Buck Controller with 100% Duty Cycle

Catalog

14V, 400 KHz Synchronous Buck Controller with 100% Duty Cycle

Part	Output Configuration	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Topology	Operating Temperature [Min]	Operating Temperature [Max]	Frequency - Switching	Output Phases	Package / Case	Package / Case [y]	Package / Case [x]	Output Type	Function	Mounting Type	Duty Cycle (Max) [Max]	Supplier Device Package	Number of Outputs
Microchip Technology MIC2193YM-TR	Positive	2.9 V	14 V	Buck	-40 °C	125 ¯C	400 kHz	1	8-SOIC	3.9 mm	0.154 in	Transistor Driver	Step-Down	Surface Mount	100 %	8-SOIC	1
Microchip Technology MIC2193YM	Positive	2.9 V	14 V	Buck	-40 °C	125 ¯C	400 kHz	1	8-SOIC	3.9 mm	0.154 in	Transistor Driver	Step-Down	Surface Mount	100 %	8-SOIC	1
Microchip Technology MIC2193BM	Positive	2.9 V	14 V	Buck	-40 °C	125 ¯C	400 kHz	1	8-SOIC	3.9 mm	0.154 in	Transistor Driver	Step-Down	Surface Mount	100 %	8-SOIC	1
Microchip Technology MIC2193BM-TR	Positive	2.9 V	14 V	Buck	-40 °C	125 ¯C	400 kHz	1	8-SOIC	3.9 mm	0.154 in	Transistor Driver	Step-Down	Surface Mount	100 %	8-SOIC	1

Catalog

14V, 400 KHz Synchronous Buck Controller with 100% Duty Cycle

Key Features

• + 2.9V to 14V input voltage range

• + 400kHz oscillator frequency

• + PWM current mode control

• + 100% maximum duty cycle

• + Front edge blanking

• + Four output drivers

• + Cycle-by-cycle current limiting

• + Frequency foldback short circuit protection

• + 8-lead SOIC package

Description

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.