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MCP1700T-3302E/TT

250mA LDO, 3.3V Fixed, 1.6uA IQ, 178mV VDO, AEC-Q100, SOT-23-3

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Manufacturer Part：

MCP1700T-3302E/TT

Package：

SOT-23-3 (2.9 x 1.3 x 0.95 mm)

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Description

Product Overview

The MCP1700T-3302E/TT from Microchip Technology is a 250 mA CMOS low-dropout linear regulator with 3.3 V fixed output, 1.6 uA quiescent current, 178 mV dropout, and 2.3 V to 6.0 V input range in a SOT-23-3 package. AEC-Q100 qualified.

Key Specifications

Type Low-Dropout Linear Regulator (LDO)
Output Voltage 3.3 V (Fixed)
Output Current 250 mA
Input Voltage 2.3 V to 6.0 V
Dropout Voltage 178 mV typical @ 250 mA
Quiescent Current 1.6 uA (typical)
Output Accuracy ±0.4% typical (±2% max)
Output Capacitor 1 uF ceramic (stable)
Package SOT-23-3
Operating Temperature -40°C to +125°C
Qualification AEC-Q100

Features

  • Ultra-low 1.6 uA quiescent current for extended battery life
  • 178 mV low dropout at full load
  • ±0.4% typical output voltage accuracy
  • Stable with only 1 uF ceramic output capacitor
  • Short-circuit and over-temperature protection
  • AEC-Q100 automotive qualified
  • Pin-compatible upgrade for bipolar regulators

Applications

  • Battery-powered devices and instruments
  • Smoke and CO2 detectors
  • Microcontroller and sensor power supply
  • Portable medical devices
  • Smart battery packs and PDAs

The MCP1700T-3302E/TT from Microchip Technology is a 250 mA CMOS low-dropout positive voltage regulator with a fixed 3.3 V output. Its extremely low 1.6 uA typical quiescent current makes it ideal for battery-powered applications where standby time is critical. The 178 mV typical dropout voltage at 250 mA allows operation with minimal headroom between input and output. The device is stable with only a 1 uF ceramic output capacitor, simplifying PCB design. AEC-Q100 qualification ensures automotive-grade reliability. The wide 2.3 V to 6.0 V input range supports single-cell Li-ion and multi-cell alkaline battery configurations.

The MCP1700T-3302E/TT uses a P-channel MOSFET pass element controlled by an error amplifier that compares the divided output voltage against an internal bandgap reference. The P-channel MOSFET allows low dropout operation because no gate drive voltage above VIN is needed. The error amplifier drives the gate to regulate the output at 3.3 V. The 1.6 uA quiescent current is achieved by biasing the internal circuitry at very low current levels. The output voltage is set by an internal trimmed resistor divider, providing ±0.4% typical accuracy. Short-circuit protection limits the output current when VOUT drops below the regulation threshold. Thermal shutdown disables the output when the die temperature exceeds approximately 145°C. The device requires only 1 uF output capacitance for stability due to the internal compensation.

Pin Name Type Function
1 VIN Power Input supply (2.3-6.0V)
2 GND Ground Ground
3 VOUT Output Regulated 3.3V output
  • MCU and sensor 3.3V power rail from Li-ion battery
  • Smoke detector and CO2 sensor long-life standby power
  • Portable medical instrument voltage regulation
  • Smart battery pack management power supply
  • PDA and digital camera battery-powered regulation
Manufacturer Part Number Package Notes
Microchip MCP1700T-5002E/TT SOT-23-3 5.0V output variant
Microchip MCP1703AT-3302E/MB SOT-89-3 Higher current, 250mA
Texas Instruments TLV70033DDCR SOT-23-5 3.3V, 300mA, EN pin
onsemi NCP551SN33T1G TSOP-5 3.3V, 150mA, low IQ
Richtek RT9193-33GB SOT-23-3 3.3V, 300mA, low noise
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Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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