Model No: MCP1703AT-2502E/CB

Microchip Technology MCP1703AT-2502E/CB

Manufacturer: Microchip Technology
SEMICON NO.: MCP1703AT-2502E/CB
Package: SOT-23A-3
Stock: In stock
Description: Voltage Regulator Positive Fixed 1 Output 250mA 16V
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 Mfr       Microchip Technology
 Device Type      Low Quiescent Current CMOS LDO Regulator
 Input Voltage     2.7 V to 16 V
 Output Voltage (Fixed)   2.5 V 
 Maximum Output Current     250 mA
 Maximum Dropout Voltage     1.1 V @ 250 mA
 Quiescent Current      5 µA
 PSRR (Power Supply Rejection Ratio)     35 dB @ 100 Hz
 Output Voltage Accuracy   ±2%
 Protection   Over Current, Over Temperature, Short Circuit
 Operating Temperature    –40°C to +125°C
 Package SOT-23A-3
 Mounting Type
 Surface Mount
 Compliance    
 RoHS Compliant
 
 
MCP1703AT-2502E/CB | Linear regulator 2.5V automotive LDO 250mA fixed SOT-23A power IC
MCP1703AT-2502E/CB is an AEC-Q100 qualified automotive-grade fixed-output low-dropout linear regulator from Microchip Technology, supplied in a compact 3-pin SOT-23A surface-mount tape-and-reel package. Delivering a precise fixed 2.5 V output with up to 250 mA continuous load current, it operates across a wide 2.7 V to 16 V input voltage range, features only 2.0 µA typical quiescent current, 625 mV typical dropout at full load and 0.4% typical output voltage tolerance. 
Built on advanced CMOS process technology with integrated short-circuit current limit and overtemperature protection, this LDO maintains stable regulation with ceramic output capacitors from 1 µF to 22 µF, and is rated for -40°C to +125°C ambient operating temperature, making it an ideal choice for high-voltage battery-powered systems, automotive auxiliary rails and rugged industrial sensor power supplies that demand ultra-low standby power and reliable overstress protection.
This high-voltage low-IQ LDO covers these primary application scenarios: 
● Automotive auxiliary power rails for body electronics, infotainment modules and sensor supply circuits
● Battery-powered portable instruments, multi-cell alkaline / lithium battery devices and handheld test equipment
● Power supply for industrial remote sensors, 4-20 mA transmitters and field bus interface modules
● Always-on backup and wake-up power domains for MCU, RTC and memory retention circuits
● Post-regulation for offline flyback auxiliary windings and high-voltage bias supplies
● Consumer home appliance control boards and smart metering power circuits
● Low-current 2.5 V reference rails for data acquisition and signal conditioning modules
FAQ
Q: Is MCP1703AT-2502E/CB an adjustable output LDO?
A: No, this model is factory trimmed for fixed 2.5 V output; select other voltage codes or the adjustable variant if different output levels are required, and ensure input-output voltage difference stays above the dropout threshold for full load regulation.
Alternative automotive LDO models
● MCP1703A-2502E/CB: Industrial non-automotive grade 2.5 V LDO with the same electrical specifications, suitable for cost-sensitive non-Q1 industrial and consumer power designs.
● MCP1700T-2502E/TT: Lower-voltage 6 V input automotive LDO with lower quiescent current, optimized for 3.3 V to 2.5 V conversion in ultra-low-power battery-powered automotive modules.
● TLV70225DBVR: Texas Instruments 2.5 V ultra-low-IQ LDO in SOT-23 package as a cross-brand alternative for general-purpose low-current fixed-voltage regulation designs.