MIC2290 _ BDTIC 中国领先电子元器件代理商

MIC2290

The MIC2290 is a 1.2MHz , PWM, boost-switching regulator housed in the small size 2mm x 2mm 8-Pin MLF^® package. The MIC2290 features an internal Schottky diode that reduces circuit board area and total solution cost. High power density is achieved with the MIC2290's internal 34V/0.5A switch, allowing it to power large loads in a tiny footprint.

The MIC2290 implements a constant frequency 1.2MHz PWM control scheme. The high frequency operation saves board space by reducing external component sizes. The fixed frequency PWM topology also reduces switching noise and ripple to the input power source.

The MIC2290's wide 2.5V to 10V input voltage allows direct operation from 3- to 4-cell NiCad/NiMH/Alkaline batteries, 1- and 2-cell Li-Ion batteries, as well as fixed 3.3V and 5V systems.

The MIC2290 is available in a low-profile 2mm x 2mm 8-pin MLF^® leadless package and operates from a junction temperature range of -40°C to +125°C.

产品特性

Internal Schottky diode
2.5V to 10V input voltage
Output voltage adjustable to 34V
Over 500mA switch current
1.2MHz PWM operation
Stable with ceramic capacitors
<1% line and load regulation
Low input and output ripple
<1µA shutdown current
UVLO
Output overvoltage protection
Over temperature protection
2mm x 2mm 8-pin MLF® package
-40°C to +125°C junction temperature range

技术参数

Parameter Name Value	Value
Regulator Type Step Up (Boost)	Step Up (Boost)
Input Voltage Range Min (V) 2.5	2.5
Input Voltage Range Max (V) 10	10
Output Voltage Range Min (V) 3	3
Output Voltage Range Max (V) 34	34
Quiescent Current (mA) typ 2.5	2.5
Switching Frequency (kHz) 1200	1200
Operating Temp Range -40 to 125	-40 to 125
Vfb (V) 1.24	1.24
Duty Cycle Max (%) 85	85
SHUTDOWN Current (µA) (Typ) 0.2	0.2
Switch current (A) typ 0.75	0.75
Alternative Topology SEPIC, Flyback	SEPIC, Flyback