MIC4555 DATA SHEET (11/05/2015) DOWNLOAD

MIC4555
SIM Card Level Shifter with 50mA LDO
General Description
Features
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.
•
•
•
•
•
•
•
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
Marking Code
LDO Output Voltage
Junction Temperature Range
Package
MIC4555YML
4555
1.8V/3.0V
–40°C to +125°C
3mm x 3mm 16-Pin MLF®
Pin Configuration
3mm x 3mm MLF® (Top View)
Pin Description
Pin Number
Pin Name
1
EN
Enable input from controller. This pin should be high (DVCC) for normal operation and low (<0.4V) to
activate a low-current shutdown mode.
2
VSEL
VCC voltage select input from the controller. A low level selects VCC = 1.8V while driving this pin to
DVCC selects VCC = 3V.
3
DVCC
Supply Voltage for the Controller Side I/O Pins (CIN, RIN, DATA). When below 1.1V typical, the VCC
supply is disabled. This pin should be bypassed with a 1μF ceramic capacitor close to the pin.
4
N/C
Not Connected.
5
VBAT
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.
6
N/C
Not Connected
7
VCC
SIM LDO output provides SIM card VCC supply. A 1μF low-ESR capacitor should be connected close
to the VCC pin for stable operation. This pin is discharged to GND during shutdown.
8
I/O
SIM Data I/O. The SIM card output must be on an open drain driver capable of sourcing >1mA.
9
RST
Reset output pin for the SIM card.
10
GND
Common ground for the SIM and controller side.
11
CLK
Clock output pin for the SIM Card. This pin is pulled to ground during shutdown.
12
N/C
Not Connected.
13
CIN
Clock input from the controller.
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Description
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MIC4555
Pin Description (Continued)
Pin Number
Pin Name
14
RIN
15
DATA
16
N/C
ePad
HS Pad
September 2011
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.
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MIC4555
Absolute Maximum Ratings(1)
Operating Ratings(4)
Supply Voltages (DVCC, VBAT, VCC, VSEL).........−0.3 to +6.0V
Input Logic (RIN, CIN, DATA)(2) .........................−0.3 to +6.0V
Lead Temperature (soldering, 5s).............................. 260°C
Storage Temperature (TS)............................. −65 to +150°C
ESD Rating(3) ................................................ 2kV to Any Pin
ESD Rating (RST, CLK, I/O, VCC pins)(3) ........... 8kV to GND
Supply Voltage (VBAT)................................... +2.7V to +5.5V
Supply Voltage (DVCC) ....................................+1.6V to VBAT
Logic Inputs (RIN, CIN, DATA)............................. 0V to DVCC
Logic Inputs (EN, VSEL).........................................0V to VBAT
Storage Temperature (TS)............................. −45 to +125°C
Package Thermal Resistance
3mm x 3mm MLF® -16L (θJA) .............................59°C/W
Electrical Characteristics − General
TA =25oC, VBAT = 4.3V, CVCC = 1µF unless otherwise noted. Bold values indicate −40°C ≤ TJ ≤ 125°C.
Parameter
Symbol
Typ.
Max.
Unit
VEN = 0V, All outputs disabled
Condition
Min.
0.1
1
µA
VCC = 1.8V, ICC = 0mA
41
80
VCC = 3.0V, ICC = 0mA
47
80
VEN = 0V, All outputs disabled
0.1
1
fCLK = 1MHz, tr/f = 10ns, DVCC = 5.5V
3.5
VBAT Shutdown Current
ISD
VBAT Operating Current
IOPBAT
DVCC Shutdown Current
ISD
DVCC Operating Current
IOPDVcc
DVCC Undervoltage Lock-Out
Threshold (UVLO)
VUVLO
Over-Temperature Shutdown
Threshold
Tth
150
°C
Over-Temperature Hysteresis
Thys
10
°C
(5)
Auto Discharge NFET Resistance
RPD
0.8
1.1
When disabled, IOUT = 3mA. Active pulldown on VCC.
260
When disabled, IOUT = 3mA. Active pulldown on RST, CLK.
100
µA
µA
µA
1.4
V
Ω
Electrical Characteristics − SIM Power Supply and Level Translator
TA = 25oC, VBAT = 4.3V, CVCC = 1µF unless Bold values indicate −40°C ≤ TJ ≤ 125°C.
Parameter
Symbol
Condition
Min.
EN, VSEL High Input Threshold
VIH
EN, VSEL Low Input Threshold
VIL
0.4
DVCC
1.6
Controller Voltage Input
RIN, CIN High Input Threshold
VIH
RIN, CIN Low Input Threshold
VIL
DATA Output High
VOH
IOH = 20µA, I/0 = VCC
DATA Output Low
VOL
IOL = −200µA, I/O = 0V
DATA Input Current High
IIH
DATA Input Current Low
IIL
DATA Pull-Up Resistance
RPU
September 2011
Typ.
4
Unit
1.2
V
V
VBAT
V
0.7DVCC
V
0.2DVCC
V
0.7DVCC
V
−20
Between DATA and DVCC
Max.
13
20
0.4
V
20
µA
1
mA
30
kΩ
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Micrel Inc.
MIC4555
Electrical Characteristics − SIM Power Supply and Level Translator (Continued)
TA = 25oC, VBAT = 4.3V, CVCC = 1µF unless Bold values indicate −40°C ≤ TJ ≤ 125°C.
Parameter
Output Voltage Accuracy
Symbol
VACC
Condition
Min.
Typ.
Max.
3.0V Output @ 50mA and 1mA
2.7
3
3.3
1.8V Output @ 50mA and 1mA
1.62
1.8
2.0
VCC Turn-On Time
ton
Current Limit (VCC)
IOUT
Output High Voltage
VOH
RST, CLK IOH = 20µA
Output Low Voltage
VOL
RST, CLK IOL = −200µA
Output High Voltage
VOH
DATA = DVCC , IOH = 20µA
Output Low Voltage
VOL
DATA = 0V,
I/O Pull-Up Resistance
RPU
Between I/O and VCC
CLK Rise/Fall Time
RST, I/O Rise/Fall Time
Maximum CLK Frequency
60
mA
0.8VCC
V
0.4
0.8VCC
CCLK, CI/O = 30pF (20 − 80%)
tr/f
CRST, CI/O = 30pF (20 − 80%)
fCLKMAX
10
18
20
5
V
V
IOL = −1mA
tr/f
V
µs
60
6.5
Unit
0.4
V
14
kΩ
ns
ns
MHz
Notes:
1.
Exceeding the absolute maximum rating may damage the device.
2.
Exceeding the maximum differential input voltage will damage the input stage and degrade performance (input bias current is likely to increase).
3.
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
4.
The device is not guaranteed to function outside its operating rating.
5.
Specification for packaged product only.
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Typical Characteristics
IOUT = 1mA
1.810
VCC_NOM = 1.8V
1.805
COUT = 1µF
1.800
1.795
1.790
1.785
IOUT = 25mA
IOUT = 50mA
3.01
IOUT = 25mA
3.00
IOUT = 50mA
2.99
DV CC = VSEL = VBAT
2.98
VCC_NOM = 3.0V
COUT = 1µF
2.96
3.5
3.9
4.3
4.7
5.1
3.5
4
5
INPUT VOLTAGE (V)
Output Voltage VCC
vs. Output Current
Output Voltage VCC
vs. Temperature
1.90
3.08
1.88
3.06
1.86
3.04
3.02
3.00
2.98
2.96
2.94
DVCC = 5V
2.92
VOUT_NOM = 3.0V
2.90
1.82
1.80
1.78
1.76
VBAT = DVCC = 5V
1.74
VCC_NOM = 1.8V
1.72
VSEL = 0V
QUIESCENT CURRENT (µA)
40
VCC = 1.8V
20
40
60
80
3.9
4.3
4.7
INPUT VOLTAGE (V)
September 2011
5.1
5
10
5.5
15
20
25
30
35
40
45
50
Output Voltage VCC
vs. Temperature
3.06
IOUT = 10mA
3.04
3.02
3.00
2.98
2.96
VBAT = DVCC = 5V
2.94
VCC_NOM = 3.0V
2.92
VSEL = 5V
100 120
-40 -20
0
20
40
60
80
100 120
TEMPERATURE (°C)
Current Limit VCC
vs. Input Voltage VBAT
160
DVCC = 5.0V
140
70
VCC = 3.0V
60
50
40
VCC = 1.8V
30
120
100
80
DVCC = VBAT
60
VSEL = 0V
VCC = 1.8V
40
COUT = 1µF
20
20
20
3.5
VOUT_NOM = 1.8V
2.90
0
80
50
3.1
DVCC = 5V
1.72
Quiescent Current
vs. Temperature
VCC = 3.0V
2.7
1.74
TEMPERATURE (°C)
70
30
1.76
3.08
IOUT = 10mA
-40 -20
Quiescent Current
vs. Input Voltage VBAT
60
1.78
3.10
OUTPUT CURRENT (mA)
80
1.80
OUTPUT CURRENT (mA)
1.84
10 15 20 25 30 35 40 45 50
1.82
0
CURRENT LIMIT (mA)
5
1.84
5.5
1.70
0
QUIESCENT CURRENT (µA)
4.5
INPUT VOLTAGE (V)
3.10
1.86
1.70
3
5.5
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
3.1
3.02
2.97
1.780
2.7
OUTPUT VOLTAGE (V)
VSEL = 0V
IOUT = 1mA
1.88
3.03
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
1.815
1.90
3.04
DVCC = VBAT
OUTPUT VOLTAGE (V)
1.820
Output Voltage VCC
vs. Output Current
Input Voltage VBAT
vs. Output Voltage VCC
Input Voltage VBAT
vs. Output Voltage VCC
-40
0
-20
0
20
40
60
80
TEMPERATURE (°C)
6
100 120
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
INPUT VOLTAGE (V)
M9999-092311-B
Micrel Inc.
MIC4555
Typical Characteristics (Continued)
200
100
90
DROPOUT VOLTAGE (mV)
180
CURRENT LIMIT (mA)
LDO Dropout
vs. Temperature
160
140
120
100
80
VBAT = DVCC = 5V
60
VSEL = 0V
IOUT = 50mA
80
70
60
50
40
30
20
VCC = 3.0V
20
10
COUT = 1µF
0
0
40
VCC_NOM = 1.8V
-40
-20
0
20
40
60
80
100
120
60
50
VCC = 3V
40
30
20
10
COUT = 1µF
0
-40 -20
TEMPERATURE (°C)
0
20
40
60
80
100 120
0
5
10
15
20
25
30
35
40
45
50
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
LDO PSRR
LDO Output Noise
Spectral Density
-120
10
-110
Noise (10Hz- 100kHz) = 55.2µVrms
-100
V CC = 3V
NOISE (µV/√Hz)
-90
PSRR (dB)
LDO Dropout
vs. Output Current
70
DROPOUT VOLTAGE (mV)
Current Limit VCC
vs. Temperature
-80
-70
-60
-50
-40
VBAT = DVCC = 4.3V
-30
COUT = 1µF
Load = 35Ω
-20
-10
1
0.1
0.01
V CC = 1.8V
VBAT = DVCC = 4.3V
Load = 36Ω
COUT = 1µF
0.001
0
10
100
1000
10000
FREQUENCY (Hz)
September 2011
100000 1000000
10
100
1,000
10,000
100,000
FREQUENCY (Hz)
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MIC4555
Functional Characteristics
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MIC4555
Functional Characteristics (Continued)
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Functional Characteristics (Continued)
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MIC4555
Functional Diagram
Figure 1. MIC4555 Functional Block Diagram
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MIC4555
Functional Description
RIN, RST
RIN is the digital reset input for the SIM Card and
translates to RST through the digital level shifter. It is
one directional. If VSEL is low, then the input at RIN will
be level shifted to 1.8V at the RST output. If VSEL is high,
then the input at RST will be level shifted to 3V at the
RST output.
EN
The EN pin is the enable input from the controller. A
logic high signal enables the level shifters and the VCC
output. A logic low signal disables the level shifters and
the LDO and a low current shutdown mode is activated.
VSEL
VSEL selects the level shifted voltage for the SIM Card. A
high logic voltage on VSEL selects the level shifter to 3V.
A low logic voltage on VSEL selects the level shifter to
1.8V. Do not leave floating.
CIN, CLK
CIN is the digital input clock for SIM card. The CIN
translates to CLK and is one directional. If VSEL is low,
then the input at CLKIN will be level shifted to 1.8V at
the CLK output. If VSEL is high, then the input at CIN will
be level shifted to 3V at the CLK output.
DVCC
The DVCC is the supply voltage for the controller side
input and output pins (CIN, RIN, DATA). The operating
range is from 1.6V to VBAT. A minimum 1µF input
capacitor with a minimum voltage rating of 6.3V placed
close to DVCC and ground (GND) is required. Refer to the
Layout Recommendations for details.
DATA, I/O
DATA is the digital data for the SIM card. The DATA
translate to I/O through the digital level shifter and is
bidirectional using internal pull ups. If VSEL is low, then
the level shifted output is 1.8V at the I/O output. If VSEL is
high, then the level shifted output is 3V at the I/O output.
Since DATA and I/O are bidirectional, the input at I/O is
level shifted to equal the DVCC voltage at the DATA
output.
VBAT
The VBAT is the input power supply to the LDO. The
operating range is from 2.7V to 5.5V. A minimum 1µF
input capacitor with a minimum voltage rating of 6.3V to
ground (GND) is required. Refer to the Layout
Recommendations for details.
VCC
The VCC is the output of the LDO and provides power to
the SIM card. A minimum 1µF input capacitor with a
minimum voltage rating of 6.3V to ground (GND) is
required. Refer to the Layout Recommendations for
details.
GND
The ground pin (GND) is the ground path for the biasing,
the control circuitry and the power ground. The current
loop for the ground should be kept as short as possible.
Refer to the Layout Recommendations for more details.
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MIC4555
Application Information
The MIC4555 is a digital level shifter with a 50mA LDO
for SIM card interfaces. There are three high-speed level
shifters that can convert input voltages from the
controller and then level shift it to either 1.8V or 3.0V for
the SIM card. A voltage select pin (VSEL) selects the
output voltage. The MIC4555 also has a 50mA LDO that
can be used to power the SIM card.
As the MIC4555 is a CMOS device, the ground current is
typically <100µA over the load range, the power
dissipation contributed by the ground current is < 1% and
may be ignored for this particular calculation.
Example:
VBAT = 3.6V
VCC = 1.8V
IOUT = 50mA
PD = (3.6V – 1.8V)50mA
Input Capacitor
An input capacitor of 1µF is required from the VBAT to
ground to provide stability. Low-ESR ceramic capacitors
provide optimal performance with minimum board area.
Additional high-frequency capacitors, such as small
valued NPO dielectric type capacitors, help filter out
high-frequency noise and are good practice in any RFbased circuit. X5R or X7R dielectrics are recommended
for the input capacitor. Y5V dielectrics lose most of their
capacitance over temperature and are therefore, not
recommended.
PD = 0.09W
To determine the maximum operating ambient
temperature of the package, use the junction to ambient
thermal resistance of the device and the following basic
equation:
Output Capacitor
The MIC4555 requires an output capacitor of 1µF or
greater for VCC to maintain stability. The design is
optimized for use with low-ESR ceramic-chip capacitors.
High-ESR capacitors are not recommended because
they may cause high-frequency oscillation. The output
capacitor can be increased, but performance has been
optimized for a 1µF ceramic output capacitor and does
not improve significantly with larger capacitance.
X7R/X5R dielectric type ceramic capacitors are
recommended
because
of
their
temperature
performance. X7R-type capacitors change capacitance
by 15% over their operating temperature range and are
the most stable type of ceramic capacitors. Z5U and
Y5V dielectric capacitors change value by as much as
50% and 60%, respectively, over their operating
temperature ranges. To use a ceramic-chip capacitor
with Y5V dielectric, the value must be much higher than
an X7R ceramic capacitor to ensure the same minimum
capacitance over the equivalent operating temperature
range.
Thermal Considerations
The MIC4555 is designed to provide output current up to
50mA. The maximum ambient operating temperature
can be calculated based upon the output current and the
voltage drop across the part. For example if the input
voltage (VBAT) is 3.6V and the output voltage (VCC) is
1.8V at 50mA, the power dissipation of the regulator
circuit can be determined using the equation:
⎛ TJ(max) − TA
PD(max) = ⎜⎜
θ JA
⎝
TJ(max) = 125°C, the maximum junction temperature of the
die, and θJA thermal resistance = 59°C/W for the Thin
MLF® package.
Substituting PD for PD(max) and solving for the ambient
operating temperature will give the maximum operating
conditions for the regulator circuit.
The maximum power dissipation must not be exceeded
for proper operation.
For example, when operating the MIC4555YMT at an
input voltage of 3.6V and 50mA load with a minimum
footprint layout, the maximum ambient operating
temperature TA can be determined as follows:
0.09W = (125°C – TA)/(59°C/W)
TA = 119.69°C
Therefore, the maximum ambient operating temperature
of 119.69°C is allowed in a 3mm x 3mm thin MLF®
package. For a full discussion of heat sinking and
thermal effects on voltage regulators, refer to the
“Regulator Thermals” section of Micrel’s Designing with
Low Dropout Voltage Regulators handbook. This
information can be found on Micrel's website at:
http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
PD = (VBAT – VCC) I OUT + VBAT IGND
September 2011
⎞
⎟
⎟
⎠
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MIC4555
Typical Application Circuit
Bill of Materials
Item
C1, C2, C3
U1
Part Number
C1608X7R1H105K
MIC4555YML
Manufacturer
(1)
TDK
Micrel, Inc.
(2)
Description
Qty.
Ceramic Capacitor, 1µF, 6.3V, X7R, Size 0603
3
SIM Card Level Shifter with 50mA LDO
1
Notes:
1. TDK: www.tdk.com.
2. Micrel, Inc.: www.micrel.com.
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MIC4555
Layout Recommendations
Top Layer
Bottom Layer
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MIC4555
Package Information
16-Pin (3mm x 3mm) MLF® (ML)
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. This
information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry,
specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual
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© 2010 Micrel, Incorporated.
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