Datasheet Texas Instruments TXS4558RUKR — 数据表

TXS4558
www.ti.com SLLSE93A – SEPTEMBER 2011 – REVISED SEPTEMBER 2011 Dual-SIM Card Power Supply with Level Translator and Dedicated Dual LDO
Check for Samples: TXS4558 FEATURES 1 SIM2_CLK SIM2_RST SIM2_I/O EN2 VSEL2 20 19 18 17 16 CLKRUN2 VCC 2 14 CLKRUN1 VBATT 3 13 CSEL VSIM1 4 12 VSEL1 SIM1_CLK 5 11 En1 CLK 10 9 RST GND 8 15 I/O 1 7 VSIM2 SIM1_I/O RUK PACKAGE
(TOP VIEW) 6 Level Translator
– VCC Range of 1.65 V to 3.3 V
– VBATT Range of 2.3V to 5.5V
Low-Dropout (LDO) Regulator
– 50-mA LDO Regulator With Enable
– 1.8-V or 2.95-V Selectable Output Voltage
– Very Low Dropout: 100 mV (Max) at 50 mA
Control and Communication Through GPIO
Interface with Baseband Processor
Isolated Clock Stop Mode for both SIM1 and
SIM2 cards
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-B)
– 500-V Charged-Device Model (C101)
– 8kV HBM for SIM pins
Package
– 20-Pin QFN (3 mm x 3 mm) SIM1_RST NOTE: Exposed center thermal pad must be
electrically connected to Ground. DESCRIPTION
The TXS4558 is a complete dual-supply standby Smart Identity Module (SIM) card solution for interfacing wireless baseband processors with two individual SIM subscriber cards to store data for mobile handset applications.
It is a custom device which is used to extend a single SIM/UICC interface to be able to support two …