MIC5239YM Power Mosfet Transistor positive voltage regulators
multi emitter transistor
,silicon power transistors
Stock Offer (Hot Sell)
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MIC5239
Low Quiescent Current 500mA µCap LDO Regulator
General Description
The MIC5239 is a low quiescent current, µCap low-dropout regulator. With a maximum operating input voltage of 30V and a quiescent current of 23µA, it is ideal for supplying keep-alive power in systems with high voltage batteries.
Capable of 500mA output, the MIC5239 has a dropout voltage of only 350mV. It can provide high output current for applications such as USB.
As a µCap LDO, the MIC5239 is stable with either a ceramic or a tantalum output capacitor. It only requires a 3.3µF output capacitor for stability.
The MIC5239 includes a logic compatible enable input and an undervoltage error flag indicator. Other features of the MIC5239 include thermal shutdown, current limit, overvoltage shutdown, reverse-leakage protection, and reversebattery protection.
Available in the thermally enhanced SOIC-8, MSOP-8 and SOT-223, the MIC5239 comes in fixed 1.5V, 1.8V, 2.5V, 3.0V, 3.3V and 5.0V, and adjustable voltages. For other output voltages, contact Micrel.
All support documentation can be found on Micrel’s web site at: www.micrel.com.
Features
• Ultra-low quiescent current (IQ = 23µA @IO = 100µA)
• Continuous 500mA output current
• Wide input range: 2.3V to 30V
• Low dropout voltage: 350mV @500mA
• ±1.0% initial output accuracy
• Stable with ceramic or tantalum output capacitor
• Logic compatible enable input
• Low output voltage error flag indicator
• Overcurrent protection
• Thermal shutdown
• Reverse-leakage protection
• Reverse-battery protection
• High-power SOIC-8, MSOP-8 and SOT-223 packages
Applications
• USB power supply
• Keep-alive supply in notebook and portable personal computers
• Logic supply from high voltage batteries
• Automotive electronics
• Battery-powered systems
Absolute Maximum Ratings(1)
Supply Voltage (VIN) ...................................... –20V to +32V
Enable Input Voltage (VEN)............................ –0.3V to +32V
Power Dissipation (PD) (3) ...........................Internally Limited
Junction Temperature (TJ) ........................–40°C to +125°C
Storage Temperature (TS).........................–65°C to +150°C
Lead Temperature (soldering, 5 sec.)........................ 260°C
ESD Rating(4)
SOT-23-3L ...............................................................2kV
MSOP-8L ..............................................................1.5kV
Operating Ratings(2)
Supply Voltage (VIN).......................................... 2.3V to 30V
Enable Input Voltage (VEN)................................... 0V to 30V
Junction Temperature (TJ) ........................–40°C to +125°C
Package Thermal Resistance
MSOP (θJA)....................................................... 80°C/W
SOT-223 (θJA)................................................... 50°C/W
Typical Application
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