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參數(shù)資料
| 型號： | TSP9125PWR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PDSO14 |
| 封裝： | PLASTIC, TSSOP-14 |
| 文件頁數(shù)： | 1/24頁 |
| 文件大小： | 338K |
| 代理商： | TSP9125PWR |
TPS9125
5 V/3 V SIM SUPPLY AND LEVEL SHIFTERS
SLVS244A – SEPTEMBER 1999 – REVISED NOVEMBER 1999
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Integrated SIM Supply and Level Shifters
D Selectable 5-V or 3-V SIM Supply Voltage
D 3-V to 5-V Level Shifters, Bidirectional for
SIM Data Line
D 10 kV ESD Protection (HBM) on SIMDATA,
SIMRST, and SIMCLK Terminal
D 14 Terminal TSSOP
D Minimum Supply Voltage 2.7 V
D Integrated PullUp Resistor for DATA and
SIMDATA
D Thin Shrink, Small Outline, Left-Hand Tape
and Reel Package
description
The TPS9125 SIM supply and level shifter integrates a programmable 3-V or 5-V SIM supply, conformable to
the (GSM) test specification 11.10, together with either a 3-V or 5-V level shifter, conformable to the GSM
specification 11.11 and 11.12.
A charge pump, utilizing two external capacitors, is configured as voltage doubler to generate a 5-V supply rail
from VDD. Dependent on the SIM card used, a control signal coming from the SIM card controller is applied on
the MODE terminal to switch between a 3-V or 5-V supply on the SIMVCC output terminal.
A 3-V/5-V bidirectional level shifter translates the 3-V compatible logic signal on DATA terminal into a 5-V
compatible logic signal SIMDATA terminal, and vice versa. RST and CLK are unidirectional level shifters,
providing a 5-V SIMRST and SIMCLK signal from the microcontroller to the SIM card.
The SIM supply is operating provided SIMPWR = 1 and VDD is sufficient (> 2.7 V). Under this condition, SIMVCC
voltage is generated by the SIM supply charge pump.
A RESET terminal is provided for security reasons to switch off the SIM supply and interface if the SIM card is
disconnected or removed by accident.
The TSP9125 is packaged in TI’s thin shrink small-outline package (PW).
AVAILABLE OPTIONS
TA
PACKAGE
TA
(PW)
–30
°C to 85°C
TSP9125PWR
Suffix R stands for left-handed tape and reel.
Copyright
1999, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
TI is a trademark of Texas Instruments Incorporated.
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14
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VDD
RESET
MODE
SIMPWR
DATA
CLK
RST
SIMVCC
VCAP1
VCAP2
SIMDATA
GND
SIMCLK
SIMRST
PW PACKAGE
(TOP VIEW)
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