智能锁和门禁

主要特性

• R_DS(on) typ. 250 m and 400 m
• Not switching quiescent current: max 600 μA over temperature range
• Uses tiny capacitors and inductors
• Internal soft-start
• Enable function
• Step-down current mode PWM (1.7 MHz) DCDC converter
• 0.7 A output current capability
• Fixed output voltage of 1.2 V
• Synchronous rectification
• Typical efficiency: > 90%
• 3% DC output voltage tolerance

Show More

主要特性

• Input voltage range from 1.8 V to 5.5 V
• 2 A output current at 3.3 V in buck mode (V_IN = 3.6 V to 5.5 V)
• 800 mA output current at 3.3 V in boost mode (V_IN 2.0 V)
• Typical efficiency higher than 94%
• ±2% DC feedback voltage tolerance
• Automatic transition between step-down and boost mode
• Adjustable output voltage from 1.2 V to 5.5 V
• Power save mode (PS) at light load
• 2.0 MHz fixed switching frequency
• Adjustable switching frequency up to 2.4 MHz (external synchronous square signal)
• Device quiescent current less than 50 µA
• Load disconnect during shutdown
• Shutdown and soft-start functions
• Shutdown current <1 A
• Available in Flip-Chip 20, pitch = 0.4 mm
• RoHS compliant

Show More

主要特性

• Charges single-cell Li-Ion/Li-Po batteries with CC-CV algorithm and charge termination
• Fast charge current programmable from 1 mA to 650 mA
• Pre-charge current programmable from 1 mA to 650 mA
• Adjustable floating voltage up to 4.45 V
• Integrated always-ON low quiescent LDO regulator
• Battery overcharge and over-discharge protections
• Overcurrent protection
• Shipping mode entry and exit inputs
• Integrated dual 3 Ω SPDT load switches
• Digital control inputs
• RoHS compliant

Show More

主要特性

• Complete M41T62LC6F pinout (I²C interface) for a standard DIL 24 socket
• RoHS compliant

Show More

主要特性

• Charges single-cell Li-Ion/Li-Po batteries with CC-CV algorithm and charge termination
• Fast charge current programmable from 1 mA to 450 mA
• Pre-charge current programmable from 1 mA to 450 mA
• Adjustable floating voltage up to 4.45 V
• Integrated always-on low quiescent LDO regulator
• Battery over-charge and over-discharge protections
• Overcurrent protection
• Shipping mode exit input
• Integrated dual 3 Ω SPDT load switches
• Integrated smart reset / watchdog logic
• Single wire control interface
• RoHS compliant

Show More

主要特性

• Two ready-to-use printed circuit boards (PCB):
  • ST25DV_Discovery_Mboard:
  • STM32F405VGT6 LQFP100 32-bit microcontroller, with 1 Mbyte Flash memory, 192 + 4 Kbytes SRAM.
  • LCD color screen (320 x 200 pixels)
  • Touch screen driver
  • Different color LEDs (power, user, ST link)
  • User push button
  • Joystick for menu selection
  • Reset button
  • On board ST link for microcontroller firmware upgrade and debug
  • ST link mini USB
  • User micro USB
  • USB micro or mini connector for board powering
  • Demonstration use cases stored in memory
  • Demonstration edition (optional add-on module) with Bluetooth Low Energy module, Wi-Fi^® module and JTAG 20 pin connector
• ST25DV_Discovery_ANT_C5:
  • 40 mm x 24 mm, 13.56 MHz inductive antenna etched on the PCB
  • ST25DV04K Dynamic NFC / RFID tag
  • I² C interface connector
  • Energy harvesting output (VOUT) with a 10 nF capacitance filtering circuit
  • GPO configurable as RF WIP/BUSY output, to indicate that an RF operation is ongoing

Show More

主要特性

• On-board NFC card reader IC: ST25R3911B
• 47 mm x 34 mm, four turns, 13.56 MHz inductive antenna etched on PCB and associated tuning circuit
• Six general purpose LEDs
• ISO 18092 (NFCIP-1) active P2P
• ISO 14443A and ISO14443B
• ISO 15693
• FeliCa™
• VHBR
  • 6.8 Mbit/s AFE and PCD to PICC framing
  • 3.4 Mbit/s PICC to PCD framing
• Up to 1.4 W output power with differential antenna
• Possibility of driving two antennas in single ended configuration
• Inductive and capacitive wake-up
• Automatic antenna tuning system
• Transparent and Stream modes to implement MIFARE™ Classic compliant or other custom protocols
• Equipped with Arduino™ UNO R3 connector
• Free comprehensive development firmware library compatible with STM32Cube and samples for ST25R3911B
• Scalable solution for multiple board cascade
• FCC certified
• RoHS compliant

Show More

主要特性

• Multi LDO evaluation board based on four high performance low dropout linear voltage regulators in miniature packages
• Key features:
  • Low operating input voltage (from 1.4 V to 5.5 V)
  • Current capability from 200 mA to 300 mA
  • Low dropout (down to 160 mV typ.)
  • Ultra-low quiescent current (down to 500 nA typ.)
  • Low noise (down to 6.5 μVRMS typ.)
  • High PSSR (up to 80 dB)
  • Logic controlled electronic shutdown (enable)
  • Tiny packages (DFN-6L, Flip-chip, ST STAMP™)
• RoHS compliant

Show More