MIC2920X
400 mA Low Dropout Regulators
Features
General Description
• High Output Voltage Accuracy
• Ensured 400 mA Output
The MIC2920 family (MIC2920A, MIC29201,
MIC29202, and MIC29204) are efficient voltage
regulators with very low dropout voltage (typically
40 mV at light loads and 370 mV at 250 mA) and very
low quiescent current (140 μA typical). The quiescent
current of the MIC2920A increases only slightly in
dropout, prolonging battery life. Key MIC2920A
features include protection against reversed battery,
fold-back current limiting, and automotive “load dump”
protection (60V positive transient).
• Low Quiescent Current
• Low Dropout Voltage
• Extremely Tight Load and Line Regulation
• Very Low Temperature Coefficient
• Current and Thermal Limiting
• Input Withstands –20V Reverse Battery and +60V
Positive Transients
The MIC2920 family of devices are available in several
configurations. The MIC2920A-x.x devices are 3-lead
fixed-voltage regulators available in 3.3V, 4.85V, 5V,
and 12V outputs. The MIC29201 is a fixed-voltage
regulator that offers a logic-compatible ON/OFF
(shutdown) input and an error flag output. This flag may
• Error Flag Warns of Output Dropout
• Logic-Controlled Electronic Shutdown
• Output Programmable from 1.24V to 26V
(MIC29202/MIC29204)
• Available in TO-220-3, TO-220-5, and
Surface-Mount TO-263-5, SOT-223, and SOIC-8
Packages
also be used as
a power-on reset signal. A
logic-compatible shutdown input is provided on the
adjustable MIC29202, which allows the regulator to be
switched on and off. The MIC29204 8-lead SOIC
adjustable regulator includes both shutdown and error
flag pins and may be pin-strapped for 5V output or
programmed from 1.24V to 26V using two external
resistors.
Applications
• Battery-Powered Equipment
• Cellular Telephones
• Laptop, Notebook, and Palmtop Computers
• PCMCIA VCC and VPP Regulation/Switching
• Barcode Scanners
• Automotive Electronics
• SMPS Post-Regulators
• Voltage Reference
• High-Efficiency Linear Power Supplies
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DS20006601A-page 1