MIC4555
SIM Card Level Shifter with 50mA LDO
General Description
The MIC4555 is a digital level shifter with a 50mA LDO for
SIM card interfaces. There are three high-speed level
shifters for SIM card signal translation. The level shifters
are designed to support high-speed clocking up to 5MHz.
The 50mA LDO provides power for the SIM Card to
eliminate the need for a separate power device. This
simplifies the design of the SIM card interface. The
MIC4555 is available in a tiny, lead-free, 16-pin MLF
®
package (3mm x 3mm), and is specified to operate from
−40°C
to +125°C junction temperature.
Data sheets and support documentation can be found on
Micrel’s web site at:
www.micrel.com.
Features
•
•
•
•
•
•
•
Powers 1.8V or 3V SIM up to 50mA
Input voltage 2.7V to 5.5V
Controller voltage 1.6V to 5.5V
Supports clock rates greater than 5MHz
8kV ESD protection on SIM contact pins
16-pin 3mm x 3mm MLF
®
package
−40°C
to +125°C junction temperature range
Applications
•
SIM card interface for 3G/4G systems
•
Wireless PC cards
•
Smart card readers
____________________________________________________________________________________________________________
Typical Application
Typical SIM/SMART CARD Interface
MLF and
MicroLead
Frame are registered trademark Amkor Technology Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
408
) 944-01200 • fax + 1 (408) 474-1000 •
http://www.micrel.com
September 2011
M9999-092311-B
Micrel Inc.
MIC4555
Ordering Information
Part Number
MIC4555YML
Marking Code
4555
LDO Output Voltage
1.8V/3.0V
Junction Temperature Range
–40°C to +125°C
Package
3mm x 3mm 16-Pin MLF
®
Pin Configuration
3mm x 3mm MLF
®
(Top View)
Pin Description
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
Pin Name
EN
V
SEL
DV
CC
N/C
V
BAT
N/C
V
CC
I/O
RST
GND
CLK
N/C
C
IN
Description
Enable input from controller. This pin should be high (DV
CC
) for normal operation and low (<0.4V) to
activate a low-current shutdown mode.
V
CC
voltage select input from the controller. A low level selects V
CC
= 1.8V while driving this pin to
DV
CC
selects V
CC
= 3V.
Supply Voltage for the Controller Side I/O Pins (C
IN
, R
IN
, DATA). When below 1.1V typical, the V
CC
supply is disabled. This pin should be bypassed with a 1μF ceramic capacitor close to the pin.
Not Connected.
SIM LDO supply input. This pin can function between 2.7V and 5.5V for normal operation. This pin
should be bypassed with a 1μF ceramic capacitor close to the pin.
Not Connected
SIM LDO output provides SIM card V
CC
supply. A 1μF low-ESR capacitor should be connected close
to the V
CC
pin for stable operation. This pin is discharged to GND during shutdown.
SIM Data I/O. The SIM card output must be on an open drain driver capable of sourcing >1mA.
Reset output pin for the SIM card.
Common ground for the SIM and controller side.
Clock output pin for the SIM Card. This pin is pulled to ground during shutdown.
Not Connected.
Clock input from the controller.
September 2011
2
M9999-092311-B
Micrel Inc.
MIC4555
Pin Description (Continued)
Pin Number
14
15
16
ePad
Pin Name
R
IN
DATA
N/C
HS Pad
Description
Reset input from the controller.
Controller side data I/O. This pin is used for bidirectional data transfer. The controller output must be
an open-drain configuration. The open drain output must be capable of sinking greater than 1mA.
Not Connected
Heat sink pad. Connect to GND.
September 2011
3
M9999-092311-B
Micrel Inc.
MIC4555
Absolute Maximum Ratings
(1)
Supply Voltages (DV
CC
, V
BAT
, V
CC
, V
SEL
).........−0.3 to +6.0V
Input Logic (R
IN
, C
IN
, DATA)
(2)
.........................−0.3 to +6.0V
Lead Temperature (soldering, 5s).............................. 260°C
Storage Temperature (T
S
).............................
−65
to +150°C
ESD Rating
(3)
................................................ 2kV to Any Pin
ESD Rating (RST, CLK, I/O, V
CC
pins)
(3)
........... 8kV to GND
Operating Ratings
(4)
Supply Voltage (V
BAT
)................................... +2.7V to +5.5V
Supply Voltage (DV
CC
) ....................................+1.6V to V
BAT
Logic Inputs (R
IN
, C
IN
, DATA)............................. 0V to DV
CC
Logic Inputs (EN, V
SEL
).........................................0V to V
BAT
Storage Temperature (T
S
).............................
−45
to +125°C
Package Thermal Resistance
3mm x 3mm MLF
®
-16L (θ
JA
) .............................59°C/W
Electrical Characteristics
−
General
T
A
=25
o
C, V
BAT
= 4.3V, C
VCC
= 1µF unless otherwise noted.
Bold
values indicate
−40°C ≤
T
J
≤
125°C.
Parameter
V
BAT
Shutdown Current
V
BAT
Operating Current
DV
CC
Shutdown Current
DV
CC
Operating Current
DV
CC
Undervoltage Lock-Out
Threshold (UVLO)
Over-Temperature Shutdown
Threshold
Over-Temperature Hysteresis
Auto Discharge NFET Resistance
(5)
Symbol
I
SD
I
OPBAT
I
SD
I
OPDVcc
V
UVLO
T
th
T
hys
R
PD
Condition
V
EN
= 0V, All outputs disabled
V
CC
= 1.8V, I
CC
= 0mA
V
CC
= 3.0V, I
CC
= 0mA
V
EN
= 0V, All outputs disabled
f
CLK
= 1MHz, t
r/f
= 10ns, DV
CC
= 5.5V
Min.
Typ.
0.1
41
47
0.1
3.5
Max.
1
80
80
1
Unit
µA
µA
µA
µA
0.8
1.1
150
10
1.4
V
°C
°C
Ω
When disabled, I
OUT
= 3mA. Active pull-
down on V
CC
.
When disabled, I
OUT
= 3mA. Active pull-
down on RST, CLK.
260
100
Electrical Characteristics
−
SIM Power Supply and Level Translator
T
A
= 25
o
C, V
BAT
= 4.3V, C
VCC
= 1µF unless
Bold
values indicate
−40°C ≤
T
J
≤
125°C.
Parameter
EN, V
SEL
High Input Threshold
EN, V
SEL
Low Input Threshold
Controller Voltage Input
RIN, CIN High Input Threshold
RIN, CIN Low Input Threshold
DATA Output High
DATA Output Low
DATA Input Current High
DATA Input Current Low
DATA Pull-Up Resistance
Symbol
V
IH
V
IL
DV
CC
V
IH
V
IL
V
OH
V
OL
I
IH
I
IL
R
PU
Between DATA and DV
CC
13
20
I
OH
= 20µA, I/0 = V
CC
I
OL
=
−200µA,
I/O = 0V
−20
0.2DV
CC
0.7DV
CC
0.4
20
1
30
0.4
1.6
V
BAT
0.7DV
CC
Condition
Min.
Typ.
Max.
1.2
Unit
V
V
V
V
V
V
V
µA
mA
kΩ
September 2011
4
M9999-092311-B
Micrel Inc.
MIC4555
Electrical Characteristics
−
SIM Power Supply and Level Translator (Continued)
T
A
= 25
o
C, V
BAT
= 4.3V, C
VCC
= 1µF unless
Bold
values indicate
−40°C ≤
T
J
≤
125°C.
Parameter
Output Voltage Accuracy
V
CC
Turn-On Time
Current Limit (V
CC
)
Output High Voltage
Output Low Voltage
Output High Voltage
Output Low Voltage
I/O Pull-Up Resistance
CLK Rise/Fall Time
RST, I/O Rise/Fall Time
Maximum CLK Frequency
Notes:
1.
2.
3.
4.
5.
Exceeding the absolute maximum rating may damage the device.
Exceeding the maximum differential input voltage will damage the input stage and degrade performance (input bias current is likely to increase).
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
The device is not guaranteed to function outside its operating rating.
Specification for packaged product only.
Symbol
V
ACC
t
on
I
OUT
V
OH
V
OL
V
OH
V
OL
R
PU
t
r/f
t
r/f
f
CLKMAX
Condition
3.0V Output @ 50mA and 1mA
1.8V Output @ 50mA and 1mA
Min.
2.7
1.62
60
Typ.
3
1.8
60
Max.
3.3
2.0
Unit
V
µs
mA
V
RST, CLK I
OH
= 20µA
RST, CLK I
OL
=
−200µA
DATA = DV
CC
, I
OH
= 20µA
DATA = 0V,
I
OL
=
−1mA
Between I/O and V
CC
C
CLK,
C
I/O
= 30pF (20
−
80%)
C
RST,
C
I/O
= 30pF (20
−
80%)
0.8V
CC
0.4
0.8V
CC
0.4
6.5
10
18
20
5
14
V
V
V
kΩ
ns
ns
MHz
September 2011
5
M9999-092311-B
stm32/stm8
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