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參數(shù)資料
| 型號(hào)： | NCN4555MNR2 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 電源管理 |
| 英文描述： | 1.8V / 3V SIM Card Power Supply and Level Shifter |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC16 |
| 封裝： | 3 X 3 MM, 0.75 MM HEIGHT, 0.50 MM PITCH, QFN-16 |
| 文件頁(yè)數(shù)： | 8/12頁(yè) |
| 文件大?。?/td> | 110K |
| 代理商： | NCN4555MNR2 |
NCN4555
http://onsemi.com
8
APPLICATION INFORMATION
CARD SUPPLY CONVERTER
The NCN4555 interface DCDC converter is a
Low Dropout Voltage Regulator capable of suppling a
current in excess of 50 mA under 1.8 V or 3.0 V. This device
features a very low quiescent current typically lower than
25 A (Figure 6 and 7). MOD_V
CC
is a select input
allowing a logic level signal to select a regulated voltage of
1.8 V (MOD_V
CC
= LOW) or 3.0 V (MOD_V
CC
= HIGH).
Additionally, the NCN4555 has a shutdown input allowing
it to turn off or turn on the regulator output. The shutdown
mode power consumption is typically in the range of a few
tens of nA (30 nA Typical). Figure 8 shows a simplified
view of the NCN4555 voltage regulator. The SIM_V
CC
output is internally current limited and protected against
short circuits. The shortcircuit current IV
CC
is constant
over the temperature and SIM_V
CC
. It varies with V
BAT
typically in the range of 60 mA to 90 mA (Figure 4 and 5).
In order to guarantee a stable and satisfying operating of
the LDO the SIM_V
CC
output will be connected to a 1.0 F
bypass ceramic capacitor to the ground. At the input, V
BAT
will be bypassed to the ground with a 0.1 F ceramic
capacitor.
LEVEL SHIFTERS
The level shifters accommodate the voltage difference
that might exist between the microcontroller and the smart
card. The RESET and CLOCK level shifters are
monodirectional and feature both the same architecture.
The bidirectional I/O line provides a way to automatically
adapt the voltage difference between the MCU and the SIM
card in both directions. In addition with the pullup resistor,
an active pullup circuit (Figure 8, Q1 and Q2) provides a fast
charge of the stray capacitance, yielding a rise time fully
within the ISO7816 specifications.
+
Figure 8. Simplified Block Diagram of the LDO Voltage Regulator
+
R1
R2
GND
Q1
V
REF
C
IN
= 0.1 F
V
BAT
STOP
SIM_V
CC
MOD_V
CC
C
OUT
= 1.0 F
I
lim
Figure 9. Basic I/O Line Interface
LOGIC
IO/CONTROL
GND
GND
Q3
SIM_I/O
I/O
200 ns
200 ns
Q2
Q1
18 k
14 k
V
DD
SIM_V
CC
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| NCN4555MNR2G | 1.8V / 3V SIM Card Power Supply and Level Shifter |
| NCN4557 | 1.8 V/3.0 V Dual SIM/SAM/Smart Card Power Supply and Level Shifter |
| NCN4557MTG | 1.8 V/3.0 V Dual SIM/SAM/Smart Card Power Supply and Level Shifter |
| NCN4557MTR2G | 1.8 V/3.0 V Dual SIM/SAM/Smart Card Power Supply and Level Shifter |
| NCN6000DTB | Compact Smart Card Interface IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NCN4555MNR2G | 功能描述:轉(zhuǎn)換 - 電壓電平 1.8V/3.3V Sim Card Power Supply RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時(shí)間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MLF-8 |
| NCN4557 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:1.8 V/3.0 V Dual SIM/SAM/Smart Card Power Supply and Level Shifter |
| NCN4557MTG | 功能描述:轉(zhuǎn)換 - 電壓電平 ANA DUAL SMART CARD INT RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時(shí)間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MLF-8 |
| NCN4557MTR2G | 功能描述:轉(zhuǎn)換 - 電壓電平 ANA DUAL SMART CARD INT RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時(shí)間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MLF-8 |
| NCN-4-8-2 | 制造商:z*INACTIVE* NATIONAL 功能描述: |
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