MIC5246

Features:

* Error flag indicates fault condition
* Ultralow dropout-100mV @ 100mA
* Load independent, ultralow ground current: 85A
* 150mA output current
* Current limiting
* Thermal Shutdown
* Tight load and line regulation
*"Zero" off-mode current
* Stability with low-ESR capacitors
* Fast transient response
* TTL-Logic-controlled enable input


Application

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


Pinout




Specifications

Supply Input Voltage (V ) .................................... 0V to +7V_IN
Enable Input Voltage (V )..................................... 0V_EN  to V_IN
Flag Output Voltage (V )..................................... 0V_FLG to V _IN
Junction Temperature (T ) .........................................+150°C
Storage Temperature...............................65°C to +150°C
Lead Temperature (soldering, 5 sec.)......................... 260°C
ESD, Note 3


Description

The MIC5246 is an efficient, precise CMOS voltage regulator optimized for low-noise applications. The MIC5246 offers better than 1% initial accuracy, extremely-low-dropout volt- age (typically 150mV at 150mA) and constant ground current (typically 85A)over load . The MIC5246 features an error flag that indicates an output fault condition such as overcurrent, thermal shutdown and dropout. The MIC5246 provides a very low noise output, ideal for RF applications where quiet voltage sources are required.

Designed specifically for hand-held and battery-powered devices, the MIC5246 provides a TTL-logic-compatible en- able pin. When disabled, power consumption drops nearly to zero.

The MIC5246 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 push- pull output for faster transient response, and an active clamp to speed up device turnoff. Available in the IttyBitty(TM) SOT-23-5 package, the MIC5246 also offers a range of fixed output
voltages.