The TPT24857 is an SD 3.0 spec-compliant memory card voltage-level translator with bidirectional control.It is designed to translate voltage between voltage 1.8 V to 3.0 V in card side and 1.2 V to 1.8 V in host side.The device supports SD 3.0 SDR104 in high speed mode,and covers down to SDR50,DDR50,SDR25,SDR12&SD 2.0(50 MHz and 25 MHz)modes.The TPT24857 has an integrated voltage regulator to supply the card-side I/Os,can support 100mA peak current with an autoenable function.The device also has the EMI filters and support robust ESD protections:10kV IEC contact ESD.TPT24857 is available in WLCSP20 with 0.4mm pitch package,and is characterized from–40°C to+85°C.

Features

⚫SD 3.0 spec-compliant voltage translation to

support SDR104 mode

⚫Supports high speed clock,up to 208 MHz

⚫1.2 V to 1.8 V host side interface voltage support

⚫100 mA peak current regulator to supply the cardside I/Os

⚫Low power consumption by push-pull output stage

⚫Automatic enable and disable through VSD

⚫Integrated pull-up and pull-down resistors:no

external resistors required

⚫Integrated EMI filters suppress higher harmonics of

digital I/Os

⚫Package:WLCSP20;pitch 0.4 mm

⚫ESD Protection on card side

◼8kV IEC61000-4-2,contact mode

◼15kV IEC61000-4-2,air-discharge mode

Applications

⚫Smartphone

⚫Mobile handset and Digital camera

⚫Tablet PC/Laptop

⚫SD,MMC or microSD card readers