MIC5249 Micrel Semiconductor, MIC5249 Datasheet
MIC5249
Available stocks
Related parts for MIC5249
MIC5249 Summary of contents
Page 1
... Designed specifically for noise-critical applications in hand- held or battery-powered devices, the MIC5249 comes equipped with a noise reduction feature to filter the output noise via an external capacitor. Other features of the MIC5249 include a logic compatible enable pin, current limit, thermal shutdown, ultra-fast transient response, and an active clamp to speed up device turnoff ...
Page 2
... MIC5249 Pin Configuration Pin Description Pin Number Pin Name 1 CBYP 2 DELAY 3 GND 4 5 VOUT 6 7 RESET 8 ENABLE M0382-033004 CBYP 1 8 ENABLE DELAY 2 7 GND 3 6 VIN 4 5 8-pin MSOP (MM) Pin Function Reference Bypass: Connect external 0.01F capacitor to GND to reduce output noise. May be left open. ...
Page 3
... MIC5249 Absolute Maximum Ratings Supply Input Voltage (V ) .................................. 0V to +7V IN Power Dissipation (P ) ........................ Internally Limited D Junction Temperature .............................. – +125 C Lead Temperature (soldering, 5 sec.) ....................... 260 C Storage Temperature (T ) ......................... – 150 C S (4) ESD Rating Electrical Characteristics +1.0V 1 OUT OUT OUT Parameter Conditions ...
Page 4
... MIC5249 Functional Diagram V Thermal Sensor Undervoltage Lockout M0382-033004 EN Startup/ Quickstart/ Shutdown Noise REF Control Cancellation Error Current Amplifier Amplifier Out of Regulation Overcurrent Dropout Detection Delay 4 IN BYP OUT RESET GND March 2004 Micrel ...
Page 5
... N-Channel MOSFET that turns on when the device is disabled. This allows the output capacitor and load to dis- charge, de-energizing the load. No-Load Stability The MIC5249 will remain stable and in regulation with no load unlike many other voltage regulators. This is especially important in CMOS RAM keep-alive application. ) DELAY is 1 ...
Page 6
... Substituting P conditions that are critical to the application will give the maximum operating conditions for the regulator circuit. For example, when operating the MIC5249-3.0BMM with a minimum footprint layout, the maximum input voltage for a set output current can be determined as follows: P max ...
Page 7
... MIC5249 Package Information 0.122 (3.10) 0.112 (2.84) 0.036 (0.90) 0.032 (0.81) 0.012 (0.3) 0.0256 (0.65) TYP MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. ...