MCP1755S-3302E/DB

The MCP1755S-3302E/DB is a fixed‑output, low-dropout regulator (LDO) from Microchip (Micrel) that provides a stable 3.3 V rail. It is designed to take a supply from about 2.7–5.5 V and deliver up to roughly 150 mA with a very low quiescent current. Key features include an enable pin to turn the regulator off, overcurrent protection, and thermalShutdown. It requires a suitable output capacitor (ceramic) for stability. The DB suffix denotes a small RoHS‑compliant package (see the datasheet for exact package type and pinout). Common applications: powering microcontrollers, peripherals, and other low‑power circuits in battery-powered or compact systems. For precise electrical specs, pinout, and packaging details, consult the MCP1755S-3302E/DB datasheet.

Equivalents are other 3.3 V LDO regulators with similar current/footprint. Common options:
- TI TLV70033 (SOT-23-5)
- Microchip MIC5504-3.3 or MIC5219-3.3
- Torex XC6206P332MR
- Richtek RT9013-33
- Rohm BD33xx (3.3 V series)
Note: verify same package (e.g., SOT-23-5 vs. DB), dropout, and current specs; pinouts may differ.

Here are the key features of MCP1755S-3302E/DB (fixed 3.3 V LDO):
- Fixed 3.3 V output
- Output current up to about 150 mA
- Low dropout regulator with fast transient response
- Very low quiescent current
- Enable input for shutdown/control
- Protection: overcurrent/short-circuit and thermal shutdown
- Stable with ceramic capacitors
- Wide input-voltage range (suitable for battery/single-supply apps)
- Package: DB (Microchip packaging for this part)
Note: exact current rating and input range may vary by revision; consult the datasheet for precise specs.

- Pin count: 5 pins (SOT-23-5 package, DB).
- Function: Fixed 3.3V low-dropout regulator with enable input. Pins: VIN (input), VOUT (regulated output), GND (ground), EN (enable), and a No-Connect (NC) pin.

- Manufacturer: Microchip Technology Inc.
- Company type: An American multinational semiconductor company that designs, develops, manufactures, and markets microcontrollers (PIC/dsPIC), memory, and analog semiconductors, with headquarters in Chandler, Arizona.

MCP1755S-3302E/DB is a 3.3 V low-dropout regulator. Common application areas include:
- Power supply for 3.3 V rail in portable/battery-powered devices
- Microcontrollers, DSPs, and logic ICs
- Sensors, MEMS, ADC/DAC front-ends
- Wireless modules (Bluetooth, ZigBee/IEEE 802.15.4), GPS and RF modules
- IoT/embedded systems, wearables, handheld meters
- Consumer electronics and instrumentation equipment
Provides a compact, low-quiescent-current 3.3 V rail with good transient response for these apps.

MCP1755S-3302E/DB is in a SOT-23-3 (3-pin) package. The -DB suffix denotes this SOT-23 variant.