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LP3929

National Semiconductor
Part Number LP3929
Manufacturer National Semiconductor
Description High Speed Bi-Directional Level Shifter and Ultra Low-Dropout CMOS Voltage Regulator
Published Dec 7, 2006
Detailed Description www.DataSheet4U.com LP3929 High Speed Bi-Directional Level Shifter and Ultra Low-Dropout CMOS Voltage Regulator and Lin...
Datasheet PDF File LP3929 PDF File

LP3929
LP3929

Overview
www.
DataSheet4U.
com LP3929 High Speed Bi-Directional Level Shifter and Ultra Low-Dropout CMOS Voltage Regulator and Line Protection July 2006 LP3929 High Speed Bi-Directional Level Shifter and Ultra Low-Dropout CMOS Voltage Regulator and Line Protection General Description The LP3929 is designed for portable and wireless applications requiring level translation and power supply generation in a compact footprint.
The device level translates 1.
8 V LVCMOS on the host (A) side to 2.
85 V LVCMOS levels on the card (B) side for a miniSD / SD 4-bit bi-directional data bus.
Independent direct control of the CMD, Data0 and Data1-3 paths support mini SD state machine requirements.
A shutdown pin is provided for the level shifters and regulator.
The f_CLK_A is a feedback clock to the host which can be used to overcome level shifter bus delay.
The built-in low-dropout voltage regulator is ideal for mobile phone and battery powered wireless applications.
It provides up to 200 mA from a 3.
05 V to 5.
5 V input.
It is stable with small 1.
0 µF ± 30% ceramic and high quality tantalum output capacitors, requiring smallest possible PC board area.
The card (B port) side channels have integration of ASIP (Application Specific Integrated Passives) - on chip integrated pull-up, pull-down, series resistors and capacitors for EMC filtering.
It is designed to tolerate IEC61000-4-2 level 4 ESD: ± 15 kV air discharge, ± 8 kV direct contact.
Key Specifications Level Shifter: n 6-signal Level Shifter (5 bi-directional and 1 uni-direction) n 3 ns (typ) propagation delay n Channel-to-channel skew < 1 ns (max) Low-Dropout Regulator: n 3.
05 V to 5.
5 V input range n 2.
85 V at 200 mA n Fast Turn-On time: 30 µs (typ) n 110 mV (max) dropout with 200 mA load n Thermal shutdown at 160˚C (typ) Protection Block (B Side): n Robust IEC ESD Protection: ± 15 kV Air Gap, ± 8 kV Direct Contact n ASIP / EMI Filtering Features n Ultra small micro SMD 24 bump package n 6-signal level translation 1.
8 V to 2.
85 V n ...


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