MIC2199 _ BDTIC 中国领先电子元器件代理商

MIC2199

The MIC2199 is a high power 300kHz synchronous buck DC-to-DC controller housed in a small 4mm x 4mm MLF^® 12-pin package. 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 in a 12-pin 4mm x 4mm MLF^® package with a junction temperature range from -40°C to 125°C.

产品特性

4.5V to 32V input range
4mm x 4mm MLF® package
300kHz PWM operation
95% efficiency
Output voltage adjustable down to 0.8V
20A output current capability
Drives all N-Channel MOSFETs
Logic controlled micropower shutdown
Cycle-by-cycle current limiting
Adjustable undervoltage lockout
Frequency foldback overcurrent protection

技术参数

Parameter Name Value	Value
Supported Topologies Buck	Buck
Supported Outputs 1	1
Minimum Input Voltage (V) 4.5	4.5
Maximum Input Voltage (V) 32	32
Minimum Output Voltage (V) 0.8	0.8
Maximum Output Voltage (V) 6	6
Typical Tolerance (%) ±1	±1
Duty Cycle Max (%) 0.85	0.85
Operating Frequency (Hz) 300K	300K
Internal Voltage Bias True	True
Enable Pin True	True
Current Limit / Short Circuit Protection True	True
Operating Supply Current (mA) 1.6	1.6
Iq Off (µA) 0.1	0.1
Package 12/4x4 MLF	12/4x4 MLF