MIC5245

•Ultralow dropout-100mV @ 100mA
•Ultralow noise-30V(rms)
•Stability with tantalum or ceramic capacitors
•Load independent, ultralow ground current
•150mA output current
•Current limiting
•Thermal Shutdown
•Tight load and line regulation
•"Zero" off-mode current
• Fast transient response
• TTL-Logic-controlled enable input

•Cellular phones and pagers
•Cellular accessories
•Battery-powered equipment
•Laptop, notebook, and palmtop computers
•PCMCIA VCC and VPP regulation/switching
•Consumer/personal electronics
•SMPS post-regulator/dc-to-dc modules
•High-efficiency linear power supplies

Supply Input Voltage (VIN) ........................................ 0V to +7V
Enable Input Voltage (VEN) ....................................... 0V to +7V
Junction Temperature (TJ) ........................................... +150°C
Storage Temperature ................................ 65°C to +150°C
Lead Temperature (soldering, 5 sec.) ........................... 260°C
Input Voltage (VIN) ............................................. +2.7V to +6V
Enable Input Voltage (VEN) ...................................... 0V to VIN
Junction Temperature (TJ) ......................... 40°C to +125°C
Thermal Resistance
SOT-23 (JA) .............................................................235°C/W
MSOP-8 (JA) ..............................................................80°C/W

The MIC5245 is an efficient, precise CMOS voltage regulator optimized for ultra-low-noise applications. The MIC5245 offers better than 1% initial accuracy, extremely low dropout voltage (typically 150mV at 150mA) and constant ground current over load (typically 100A). The MIC5245 provides a very low noise output, ideal for RF applications where quiet voltage sources are required. A noise bypass pin is also available for further reduction of output noise.

Designed specifically for hand-held and battery-powered devices, the MIC5245 provides a TTL logic compatible enable pin. When disabled, power consumption drops nearly to zero.

The MIC5245 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices.

Key features include current limit, thermal shutdown, a pushpull output for faster transient response, and an active clamp to speed up device turnoff. Available in the IttyBitty™ SOT-23-5 and power MSO-8 packages, the MIC5245 also offers a range of fixed output voltages.