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參數(shù)資料
| 型號(hào)： | LTC1555 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | SIM Power Supply and Level Translator(SMI電源和電平轉(zhuǎn)換器) |
| 中文描述： | SIM卡電源和電平轉(zhuǎn)換（學(xué)校管理新措施電源和電平轉(zhuǎn)換器） |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大小： | 223K |
| 代理商： | LTC1555 |
1
LTC1555/LTC1556
SIM Power Supply
and Level Translator
FEATURES
I
Step-Up/Step-Down Charge Pump Generates 5V
I
Input Voltage Range: 2.7V to 10V
I
Output Current: 10mA (V
IN
≥
2.7V)
20mA (V
IN
≥
3V)
I
3V to 5V Signal Level Translators
I
>10kV ESD on All SIM Contact Pins
I
Short-Circuit and Overtemperature Protected
I
Very Low Operating Current: 60
μ
A
I
Very Low Shutdown Current: <1
μ
A
I
Soft Start Limits Inrush Current at Turn-On
I
Programmable 3V or 5V Output Voltage
I
650kHz Switching Frequency
I
Auxiliary 4.3V LDO/Power Switch (LTC1556 Only)
I
Available in a 16- and 20-Pin Narrow SSOP
DESCRIPTIO
N
U
The LTC
1555/LTC1556 provide power conversion and
level shifting needed for 3V GSM cellular telephones to
interface with either 3V or 5V Subscriber Identity Mod-
ules (SIMs). These parts contain a charge pump DC/DC
converter that delivers a regulated 5V to the SIM card.
Input voltage may range from 2.7V to 10V, allowing
direct connection to the battery. Output voltage may be
programmed to 3V, 5V or direct connection to the V
IN
pin.
A soft start feature limits inrush current at turn-on,
mitigating start-up problems that may result when the
input is supplied by another low power DC/DC converter.
The LTC1556 also includes an auxiliary LDO regulator/
power switch that may be used to power the frequency
synthesizer or other low power circuitry.
Battery life is maximized by 60
μ
A operating current and
1
μ
A shutdown current. Board area is minimized by minia-
ture 16- and 20-pin narrow SSOP packages and the need
for only three small external capacitors.
TYPICAL APPLICATIO
N
U
GSM Cellular Telephone SIM Interface
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
CIN
RIN
DATA
DDRV
DV
CC
SS
M1
M0
CLK
RST
I/O
V
CC
5V
±
5%
I
VCC
≤
10mA
GND
CLK
RST
I/O
V
CC
V
IN
C1
+
C1
–
GND
0.1
μ
F
10
μ
F
LTC1555
3V GSM
CONTROLLER
SIM
V
2.7V TO 10V
3V
10
μ
F
1555/56 TA01
V
CC
+
, LTC and LT are registered trademarks of Linear Technology Corporation.
I
SIM Interface in GSM Cellular Telephones
I
Smart Card Readers
APPLICATIO
S
U
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1556 | SIM Power Supply and Level Translator(SMI電源和電平轉(zhuǎn)換器) |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1555CGN | 功能描述:IC LEVEL TRANSLATOR 16-SSOP RoHS:否 類別:集成電路 (IC) >> 邏輯 - 變換器 系列:- 產(chǎn)品培訓(xùn)模塊:Logic Packages 標(biāo)準(zhǔn)包裝:2,500 系列:- 邏輯功能:變換器，雙向 位數(shù):2 輸入類型:電壓 輸出類型:電壓 數(shù)據(jù)速率:- 通道數(shù):2 輸出/通道數(shù)目:1 差分 - 輸入:輸出:無(wú)/無(wú) 傳輸延遲（最大）:1.5ns 電源電壓:3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:帶卷 (TR) 其它名稱:935284857118GTL2002DP/S440-TGTL2002DP/S440-T-ND |
| LTC1555CGN#PBF | 功能描述:IC LEVEL TRANSLATOR 16-SSOP RoHS:是 類別:集成電路 (IC) >> 邏輯 - 變換器 系列:- 產(chǎn)品培訓(xùn)模塊:Logic Packages 標(biāo)準(zhǔn)包裝:2,500 系列:- 邏輯功能:變換器，雙向 位數(shù):2 輸入類型:電壓 輸出類型:電壓 數(shù)據(jù)速率:- 通道數(shù):2 輸出/通道數(shù)目:1 差分 - 輸入:輸出:無(wú)/無(wú) 傳輸延遲（最大）:1.5ns 電源電壓:3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:帶卷 (TR) 其它名稱:935284857118GTL2002DP/S440-TGTL2002DP/S440-T-ND |
| LTC1555CGN#TR | 功能描述:IC LEVEL XLATOR/SIM PS 16SSOP RoHS:否 類別:集成電路 (IC) >> 邏輯 - 變換器 系列:- 產(chǎn)品培訓(xùn)模塊:Logic Packages 標(biāo)準(zhǔn)包裝:2,500 系列:- 邏輯功能:變換器，雙向 位數(shù):2 輸入類型:電壓 輸出類型:電壓 數(shù)據(jù)速率:- 通道數(shù):2 輸出/通道數(shù)目:1 差分 - 輸入:輸出:無(wú)/無(wú) 傳輸延遲（最大）:1.5ns 電源電壓:3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:帶卷 (TR) 其它名稱:935284857118GTL2002DP/S440-TGTL2002DP/S440-T-ND |
| LTC1555CGN#TRPBF | 功能描述:IC LEVEL TRANSLATOR 16-SSOP RoHS:是 類別:集成電路 (IC) >> 邏輯 - 變換器 系列:- 產(chǎn)品培訓(xùn)模塊:Logic Packages 標(biāo)準(zhǔn)包裝:2,500 系列:- 邏輯功能:變換器，雙向 位數(shù):2 輸入類型:電壓 輸出類型:電壓 數(shù)據(jù)速率:- 通道數(shù):2 輸出/通道數(shù)目:1 差分 - 輸入:輸出:無(wú)/無(wú) 傳輸延遲（最大）:1.5ns 電源電壓:3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:帶卷 (TR) 其它名稱:935284857118GTL2002DP/S440-TGTL2002DP/S440-T-ND |
| LTC1555IGN | 功能描述:IC LEVEL TRANSLATOR 16-SSOP RoHS:否 類別:集成電路 (IC) >> 邏輯 - 變換器 系列:- 產(chǎn)品培訓(xùn)模塊:Logic Packages 標(biāo)準(zhǔn)包裝:2,500 系列:- 邏輯功能:變換器，雙向 位數(shù):2 輸入類型:電壓 輸出類型:電壓 數(shù)據(jù)速率:- 通道數(shù):2 輸出/通道數(shù)目:1 差分 - 輸入:輸出:無(wú)/無(wú) 傳輸延遲（最大）:1.5ns 電源電壓:3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:帶卷 (TR) 其它名稱:935284857118GTL2002DP/S440-TGTL2002DP/S440-T-ND |
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