ON NCN6010DTBR2 Sim card supply and level shifter Datasheet

NCN6010
SIM Card Supply and
Level Shifter
The NCN6010 is a level shifter analog circuit designed to translate
the voltages between a SIM Card and an external microcontroller. A
built−in DC−DC converter makes the NCN6010 useable to drive any
type of SIM card. The device fulfills the GSM 11.11 specification. The
external MPU has an access to a dedicated input STOP pin, providing
a way to switch off the power applied to the SIM card in case of failure
or when the card is removed.
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MARKING
DIAGRAM
Features
•
•
•
•
•
•
14
Supports 3.0 V or 5.0 V Operating SIM Card
Built−in Pull Up Resistor for I/O Pin in Both Directions
All Pins are Fully ESD Protected, According to GSM Specification
Supports 10 MHz Clock
6.0 kV ESD Proof on SIM Card Pins
These are Pb−Free Devices**
1
NCN
6010
ALYWG
G
TSSOP−14
DTB SUFFIX
CASE 948G
1
A = Assembly Location
L
= Wafer Lot
Y = Year
W = Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
Typical Applications
• Cellular Phone SIM Interface
• Identification Module
VDD
SIM_VCC
2
PWR_ON
5
6
7
P0
Ctb
I/O
CLOCK
SIM_IO
RESET
GND
STOP 2
13 Cta
MOD_VCC 3
12 Ctb
I/O 5
12
11
SIM_RST
9 SIM_CLK
RESET 7
8 SIM_RST
(Top View)
9
ORDERING INFORMATION
GND
8
8
3
2
RST
4
GND
10 GND
CLOCK 6
10
SIM_CLK
11 SIM_IO
PWR_ON 4
C2
220 nF
Vpp
P1
MOD_VCC
CLK
P2
1 mF
Cta
I/O
P3
4
13
STOP
7
6
1
5
Device
Package
Shipping †
NCN6010DTB
TSSOP−14*
96 Units / Rail
NCN6010DTBG
TSSOP−14*
96 Units / Rail
NCN6010DTBR2
TSSOP−14* 2500/Tape & Reel
9
DET
3
P4
14
DET
VDD
GND VCC
1
C4
MPU or GSM Controller
VCC
14 SIM_VCC
VDD 1
C3
C8
GND
PIN CONNECTIONS
C4
4.7
mF
10
GND
Figure 1. Typical Interface Application
NCN6010DTBR2G TSSOP−14* 2500/Tape & Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
*This package is inherently Pb−Free.
**For additional information on our Pb−Free strategy and soldering details,
please download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2006
March, 2006 − Rev. 2
1
Publication Order Number:
NCN6010/D
NCN6010
STOP
2
ENABLE
MOD_VCC
3
3 V/5 V
CLOCK
6
RESET
7
13
Cta
12
Ctb
9
SIM_CLK
8
SIM_RST
11
SIM_IO
10
GROUND
ENABLE
1
PWR_ON
VDD
SIM_VCC
POWER UNIT & LOGIC
MANAGEMENT
4
VCC
PWR_ON
14
GND
VDD
VCC
GND
20 k
20 k
GND
I/O
I/O
5
DATA
DATA
I/O
GND
GND
Figure 2. NCN6010 Block Diagram
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2
NCN6010
PIN DESCRIPTIONS
Pin
Name
Type
Description
1
VDD
POWER
This pin is connected to the system controller power supply suitable to operate from a
3.6 V typical battery. A low ESR ceramic capacitor (4.7 mF typical) shall be used to bypass
the power supply voltage.
2
STOP
INPUT
A Low level on this pin resets the SIM interface, switching off the SIM_VCC, according to
the ISO7816−3 Power Down procedure (See Table 1 and Figure 3).
3
MOD_VCC
INPUT
The signal present on this pin programs the SIM_VCC value (See Table 1):
MOD_VCC = L → SIM_VCC = 5.0 V
MOD_VCC = H → SIM_VCC = 3.0 V
4
PWR_ON
INPUT
The signal present on this pin controls the SIM_VCC state (See Table 1):
PWR_ON = L → SIM_VCC = Open, no supply connected to the SIM card.
PWR_ON = H → SIM_VCC = Active, the card is powered.
5
I/O
INPUT
This pin is connected to an external microcontroller or GSM management unit. A
bi−directional level translator adapts the serial I/O signal between the smart card and the
external controller. A built−in constant 20 kW (typical) resistor provides a high impedance
state when not activated.
6
CLOCK
INPUT
The clock signal, coming from the external controller, must have a Duty Cycle within the
Min/Max values defined by the specification (typically 50%). The built−in level shifter
translates the input signal to the external SIM card CLK input.
7
RESET
INPUT
The RESET signal present at this pin is connected to the SIM card. The internal level
shifter translates the level according to the voltages present at pin 1 and the SIM_VCC
programmed value.
8
SIM_RST
OUTPUT
This pin is connected to the RESET pin of the card connector. A level translator adapts the
external RESET signal to the SIM card. A built−in active pull down connects this pin to
ground when the device is in a nonoperating mode.
9
SIM_CLK
OUTPUT
This pin is connected to the CLK pin of the card connector. The CLOCK signal comes from
the external clock generator, the internal level shifter being used to adapt the voltage
defined for the SIM_VCC. A built−in active pull down connects this pin to ground when the
device is in a nonoperating mode.
10
GND
GROUND
This pin is the GROUND reference for the integrated circuit and associated signals. Cares
must be observed to avoid voltage spikes when the device operates in a normal operation.
11
SIM_I/O
12
Cta
POWER
This pin is connected to the external capacitor used by the internal Charge Pump
converter. Using Low ESR ceramic type is recommended (X5R or X7R).
13
Ctb
POWER
This pin is connected to the external capacitor used by the internal Charge Pump
converter. Using Low ESR ceramic type is recommended (X5R or X7R).
14
SIM_VCC
POWER
This pin is connected to the SIM card power supply pin. An internal Charge Pump
converter is programmable by the external MPU to supply either 3.0 V or 5.0 V output
voltage. An external 1.0 mF minimum ceramic capacitor (ESR t 100 mW, X5R or X7R
recommended) must be connected across SIM_VCC and GND.
During a normal operation, the SIM_VCC voltage can be set to 3.0 V followed by a 5.0 V
value, or can start directly to any of these two values. When the voltage is adjusted
downward (from 5.0 V to 3.0 V) cares must be observed as reverse peak current can flow
from the external capacitors to the battery during a short amount of time (in the 1.0 ms
range). When such a voltage adjustment is necessary, it is recommended to force
SIM_VCC to zero, wait 350 ms minimum, then reprogram the chip to get SIM_VCC = 3.0 V.
This pin handles the connection to the serial I/O of the card connector. A bi−directional
level translator adapts the serial I/O signal between the card and the microcontroller. A 20
kW (typical) pull up resistor provides a High impedance state for the SIM card I/O link.
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NCN6010
MAXIMUM RATINGS (Note 1)
Rating
Power Supply
Symbol
Value
Unit
VDD
7.0
V
SIM_VCC
7.0
V
Digital Input Voltage
Digital Input Current
STOP
−0.3 v V v VDD
1.0
V
mA
Digital Input Voltage
Digital Input Current
RESET
−0.3 v V v VDD
1.0
V
mA
Digital Input Voltage
Digital Input Current
CLOCK
−0.3 v V v VDD
1.0
V
mA
Digital Input Voltage
Digital Input Current
I/O
−0.3 v V v VDD
1.0
V
mA
SIM_RST
−0.3 v V v SIM_VCC
25
V
mA
SIM_I/O
−0.3 v V v SIM_VCC
25
V
mA
SIM_CLK
−0.3 v V v SIM_VCC
50
V
mA
6.0
2.0
kV
kV
External Card Power Supply and Level Shifter
Digital Output Voltage
Digital Output Current
Digital Input/Output Voltage
Digital Input/Output Current
Digital Output Voltage
Digital Output Current
Human Body Model: R = 1500 W, C = 100 pF
SIM card side, pins 8, 9, 11 & 14
All other pins
ESD
TSSOP−14 Package
Power Dissipation @ TA = +85°C
Thermal Resistance, Junction−to−Air
PD
RTHhja
275
145
mW
°C/W
Operating Ambient Temperature Range
TA
−25 to +85
°C
Operating Junction Temperature Range
TJ
−25 to +125
°C
TJmax
+150
°C
Tstg
−65 to +150
°C
Maximum Junction Temperature
Storage Temperature Range
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. Maximum electrical ratings are defined as those values beyond which damage to the device may occur at TA = +25°C.
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NCN6010
POWER SUPPLY SECTION (−255C to +855C)
Rating
Symbol
Pin
Min
Typ
Max
Unit
Power Supply
VDD
1
2.7
−
3.6
V
Standby Supply Current @ No Input Clock, All Input
Logic to H, No Load Connected to the SIM Interface.
I VDD
1
−
500
−
nA
Ground Current, @ VDD = 3.0 V, Operating Conditions:
PWR_ON = 0
SIM_VCC = 5.0 V, ICC = 0 mA
SIM_VCC = 5.0 V, ICC = 10 mA (Note 2)
SIM_VCC = 3.0 V, ICC = 0 mA
SIM_VCC = 3.0 V, ICC = 6.0 mA (Note 2)
I VDD
1
−
External Card Power Supply at 5.0 V
@ 2.7 V v VDD v 3.6 V, ICC = 10 mA
External Card Power Supply at 3.0 V
@ 2.7 V v VDD v 3.6 V, ICC = 10 mA
mA
5.0
125
200
25
40
SIM_VCC
14
V
4.5
VDD − 50 mV
Output SIM Card Supply Voltage Turn On Time
Ct = 220 nF, Cout1 = 1.0 mF "20%
VDD = 3.0 V, SIM_VCC = 5.0 V
VDD = 3.0 V, SIM_VCC = 3.0 V
VCCTON
Output SIM Card Supply Voltage Turn Off Time
Ct = 220 nF, Cout1 = 1.0 mF "20% (Note 3)
VDD = 2.7 V, SIM_VCC = 5.0 V, @ VLOW = 0.4 V
VDD = 2.7 V, SIM_VCC = 3.0 V, @ VLOW = 0.4 V
VCCTOFF
14
5.5
VDD − 25 mV
VDD
−
ms
1.0
0.5
14
−
ms
−
300
300
Output Voltage Ripple (Note 4)
Ct = 220 nF, Cout1 = 1.0 mF, Cout2 = 100 nF
VDD = 3.0 V, SIM_VCC = 5.0 V, ICC = 10 mA
(Not Relevant at SIM_VCC = 3.0 V)
VCCRIP
14
−
−
mV
200
Input Peak Current During DC−DC Startup
@ VDD = 3.0 V, SIM_VCC = 5.0 V
IDDpk
1
−
300
−
mA
Input Average Current During Normal Operation,
@ VDD = 3.0 V, SIM_VCC = 5.0 V
IDDavg
1
−
20
−
mA
DC−DC Internal Oscillator
Fosc
−
−
800
−
kHz
2. The IDD current represents the absolute difference between the current absorbed by the load and the one absorbed by the chip.
3. A 350 ms delay must be observed by the external MPU prior to reactivate the SIM_VCC output.
4. Using low ESR capacitors type (max 100 mW) is mandatory for Ct, Cout1 and Cout2 to reach the NCN6010 specifications. Ceramic type
(X5R or X7R) are recommended.
DIGITAL INPUT SECTION CLOCK, RESET, I/O, STOP, MOD_VCC, PWR_ON
Rating
High Level Input Voltage
Low Level Input Voltage
Input Rise Time
Input Fall Time
Input Capacitance
Input @ 45% < Duty Cycle < 55%
Clock Rise Time
Clock Fall Time
Input Clock Capacitance
Input/Output Data Transfer Frequency
I/O Rise Time
I/O Fall Time
Input I/O Capacitance
Symbol
Pin
Min
Typ
Max
Unit
VIH
VIL
tr
tf
Cin
2, 3
4, 5
6, 7
0.7 * VDD
−
VDD
0.3 * VDD
50
50
10
V
V
ns
ns
pF
CLOCK
6
−
−
5.0
50
50
10
MHz
ns
ns
pF
I/O
5
−
15
160
0.8
0.8
10
kHz
ms
ms
pF
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NCN6010
SIM INTERFACE SECTION (Note 7)
Rating
SIM_VCC = +5.0 V
Output RESET VOH @ Isim_rst = +200 mA
Output RESET VOL @ Isim_rst = −200 mA
Output RESET Rise Time @ Cout = 50 pF
Output RESET Fall Time @ Cout = 50 pF
Symbol
Pin
SIM_RST
Note 5
8
SIM_VCC = +3.0 V
Output RESET VOH @ Isim_rst = +200 mA
Output RESET VOL @ Isim_rst = −200 mA
Output RESET Rise Time @ Cout = 50 pF
Output RESET Fall Time @ Cout = 50 pF
SIM_VCC = +5.0 V
Output Duty Cycle
Output Frequency
Output SIM_CLK Rise Time @ Cout = 50 pF
Output SIM_CLK Fall Time @ Cout = 50 pF
Output VOH @ Isim_clk = +20 mA
Output VOL @ Isim_clk = −200 mA
SIM_CLK
Note 5
Note 6
Card I/O Pull Up Resistor
Max
Unit
SIM_VCC − 0.7
0
SIM_VCC
0.6
400
400
V
V
ns
ns
0.8 * SIM_VCC
0
SIM_VCC
0.2 * SIM_VCC
400
400
V
V
ns
ns
60
5.0
18
18
SIM_VCC
0.5
%
MHz
ns
ns
V
V
60
5.0
18
18
SIM_VCC
0.2 * SIM_VCC
%
MHz
ns
ns
V
V
15
160
0.8
0.8
SIM_VCC
0.4
kHz
ms
ms
V
V
15
160
0.8
0.8
SIM_VCC
0.4
kHz
ms
ms
V
V
−
40
0.7 * SIM_VCC
0
40
0.7 * SIM_VCC
0
SIM_I/O
11
0.7 * SIM_VCC
0
SIM_VCC = +3.0 V
SIM_I/O Data Transfer Frequency
SIM_I/O Rise Time @ Cout = 50 pF
SIM_I/O Fall Time @ Cout = 50 pF
Output VOH @ ISIM_IO = +20 mA, VIH = VDD
Output VOL @ ISIM_IO = −1.0 mA,
VIL I/O = 0 V
I/O Pull Up Resistor
Typ
−
9
SIM_VCC = +3.0 V
Output Duty Cycle
Output Frequency
Output SIM_CLK Rise Time @ Cout = 50 pF
Output SIM_CLK Fall Time @ Cout = 50 pF
Output VOH @ Isim_clk = +20 mA
Output VOL @ Isim_clk = −20 mA
SIM_VCC = +5.0 V
SIM_I/O Data Transfer Frequency
SIM_I/O Rise Time @ Cout = 50 pF
SIM_I/O Fall Time @ Cout = 50 pF
Output VOH @ ISIM_IO = +20 mA, VIH = VDD
Output VOL @ ISIM_IO = −1.0 mA,
VIL I/O = 0 V
Min
0.7 * SIM_VCC
0
I/O_RP
5
13
20
−
kW
SIM_I/O_ RP
11
13
20
−
kW
5. Internal NMOS device, biased to VDD, provides low impedance when SIM_VCC is disconnected to sustain GSM 11.11−200 mA input current
test.
6. The SIM_CLK clock can operate up to 10 MHz, but the rise and fall time are not guaranteed to be fully within the ISO7816 specification over
the temperature range. Typically, tr and tf are 12 ns @ CRD_CLK = 10 MHz.
7. Digital inputs undershoot t −0.30 V, Digital inputs overshoot t 0.30 V.
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NCN6010
Card Supply Charge Pump Converter
hand, although it is possible to change the SIM_VCC
voltage from 5.0 V to 3.0 V, it is recommended to switch off
the Charge Pump prior to reprogram the SIM_VCC voltage
from the high 5.0 V to a low 3.0 V.
The DC−DC converter operates under two modes as
defined by the logic level present at MOD_VCC/pin 3:
MOD_VCC = 0 SIM_CC = 5.0 V, "10%. This is the
default condition at start up.
MOD_VCC = 1 The Charge Pump is not activated and the
SIM_VCC voltage is equal to the VDD
supply minus the internal maximum
50 mV drop.
The NCN6010 device provides three pins to control the
operation of the interface as depicted in Table 1. The built−in
charge pump converter circuit provides either a 3.0 V or a
5.0 V output voltage as defined by the programming mode.
The external capacitor connected across pins 12 and 13 is
used to generate the step up voltage. Since the device
operates at 800 kHz typically, one must use high quality,
Low ESR type, ceramic capacitor (220 nF recommended).
The second external capacitor, connected across pin 14 and
GND, smooths the output voltage coming from the Charge
Pump. A high quality, Low ESR capacitor is necessary to
achieve the SIM_VCC ripple voltage (1.0 mF Ceramic type
is recommended).
The setting of the SIM_VCC voltage, using MOD_VCC
= 0 or 1, can only be made when PWR_ON is Low.
Consequently, a new supply voltage adjustment is
performed by first deactivating the SIM card, followed by
reactivating it with the new supply voltage. The SIM_VCC
voltage can be reprogrammed straightforward when the
output voltage increases from 3.0 V to 5.0 V. On the other
The NCN6010 provides a POWER DOWN sequence,
according to the ISO7816−3 specification.
Since a built−in active pull down MOS pull the SIM_VCC
pin to ground when the smart card is deactivated, a 350 ms
minimum delay must be observed prior to reactivate the
power supply. This timing assumes a 1.0 mF external
reservoir capacitor connected across SIM_VCC and
Ground.
Table 1. Programming Functions
STOP
MOD_VCC
PWR_ON
Operation Mode
0
X
X
The SIM card supply is disabled, the SIM_VCC pin is Open, SIM_RST = L,
SIM_I/O = L, SIM_CLK = L
1
0
0
The NCN6010 is in the power down mode. The SIM card supply is disabled,
SIM_VCC = Open, SIM_RST = L, SIM_CLK = L, SIM_IO = L.
The SIM_VCC voltage is programmed to 5.0 V.
1
1
0
The NCN6010 is in the power down mode. The SIM card supply is disabled,
SIM_VCC = Open, SIM_RST = L, SIM_CLK = L, SIM_IO = L.
The SIM_VCC voltage is programmed to 3.0 V.
1
X
1
The NCN6010 is in normal operating mode. The SIM card supply is enabled, SIM_VCC
voltage is the one previously programmed, all the SIM interface pins are active.
Table 1: Programming Mode
voltage. When the output voltage starts from zero, as
depicted in Figure 3, a 50 ms stabilization delay (typical) is
necessary to make sure all the output signals are biased at the
nominal 5.0 V voltage. To avoid a card transaction error, the
user must take this delay into account and program the chip
accordingly.
When the card is removed, the STOP pin shall be asserted
Low to disable the NCN6010. A mechanical switch, or
equivalent, can be either sensed by the MPU, or directly
connected to pin 2, to handle the procedure.
Power Up Sequence
When the charge pump is activated, MOD_VCC = Low,
the SIM card related level shifter pins are biased to the 5.0 V
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NCN6010
Figure 3. Power On Sequence
Power Down Operation
PWR_ON is Low, the SIM_IO, SIM_CLK and SIM_RST
pins are forced to Low and the SIM_VCC pin is left floating.
When the STOP signal is Low, the SIM_IO, SIM_CLK
and SIM_RST are forced Low, the SIM_VCC being left
floating, until the STOP pin is taken High again.
When the card is extracted, the external MPU shall detect
the operation and run the Power Down of the card by forcing
PWR_ON input to Low. The NCN6010 fulfills the power
sequence as defined by the ISO/CEI 7816−3 norm (see
oscillogram given in Figure 5).
The power down mode can be initiated by either the
PWR_ON or by the STOP pin condition. In both cases, the
communication I/O session is terminated immediately,
according to the ISO7816−3 sequence as depicted in
Figure 4. When the PWR_ON signal is set Low, the
NCN6010 goes to the power down mode. According to the
ISO7816−3 procedure defined to deactivate the SIM
contacts, the input pins I/O, CLOCK and RESET must be
Low before the PWR_ON is taken Low. When the
SIM_RST
SIM_CLK
Force SIM_RST to Low
Force SIM_CLK to Low, unless it is already in this state
Force SIM_IO to Low
Shut Off the SIM_VCC supply
SIM_IO
UNDEFINED
SIM_VCC
T
T0
T1
Figure 4. ISO7816−3 Power Down Sequence
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T2
T3
NCN6010
Figure 5. Power Down Sequence Oscillogram
Level Shifters
When the SIM card voltage is either higher or lower than
the MPU VDD supply, the level shifters can be
reprogrammed to cope with the expected output voltage.
When the MPU and the SIM card operate under the same
supply voltage, the DC−DC converter is not activated
(SIM_VCC = VDD –50 mV) and the signals go directly
through the level shifters.
The bi−directional I/O line provides a way to
automatically adapt the voltage difference between the mCU
and the SIM card. In addition with the pull up resistor, an
active pull up circuit (Figure 6 Q1 and Q2) provides a fast
charge of the stray capacitance, yielding a rise time fully
within the ISO/EMV specifications.
VDD
VCC
Q1
Q2
20 k
20 k
200 ns
200 ns
SIM_IO
I/O
GND
Q3
IO/CONTROL
LOGIC
GND
Figure 6. Basic I/O Line Interface
The typical waveform provided in Figure 7 shows how the
accelerator operates. During the first 200 ns (typical), the
slope of the rise time is solely a function of the pull up
resistor associated with the stray capacitance. During this
period, the PMOS devices are not activated since the input
voltage is below their Vgs threshold. When the input slope
crosses the Vgsth, the opposite one shot is activated,
providing a low impedance to charge the capacitance, thus
increasing the rise time as depicted in Figure 7. The same
mechanism applies for the opposite side of the line to make
sure the system is optimum.
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NCN6010
Figure 7. SIM_IO Rise and Fall Time Oscillogram
Input Schmitt Triggers
All the Logic Input pins have built−in Schmitt trigger
circuits to prevent the NCN6010 against uncontrolled
operation. The typical dynamic characteristics of the related
pins are depicted in Figure 8.
The output signal is guaranteed to go High when the input
voltage is above 0.70*Vbat, and will go Low when the input
voltage is below 0.30 * Vbat.
reservoir network. The voltage developed across the load is,
theoretically, twice the battery voltage, but the system must
takes into account the losses associated with the power
switches and the internal ohmic drops.
IS
S3
S1
Output
B
C1
A
S5
Vbat
VCC
S2
ON
OFF
S4
C2
VO
LOAD
Vbat
0.70 Vbat
0.30 Vbat
Input
Figure 9. Basic Charge Pump Converter
When the output voltage is programmed to 3.0 V, the
clocks are inactive and the load is directly connected to the
battery by means of switch S5. The SIM_VCC voltage
follows the input value, minus the drop coming from the
internal resistance . The current is limited by the Ron of the
power device S5 and t he output voltage will decrease as the
load current increases above 20 mA (typical). Figure 10
illustrates the theoretical waveforms.
Figure 8. Typical Schmitt Trigger Characteristic
Charge Pump Converter
The converter uses a switched capacitor technique to
increase the SIM_VCC voltage up to 5.0 V from a 3.3 V
typical battery. The concept, depicted in Figure 9, charges
the transfer capacitor C1 up to the Vcc value, then connects
this capacitor is series with the input voltage–output
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NCN6010
SIM_VCC = 5.0 V
SIM_VCC = 3.0 V
S1
S2
S3
S4
S5
MOD_VCC
Figure 10. Basic Charge Pump Operating Timings
When the NCN6010 is programmed in the 5.0 V output
voltage, the clocks are activated, switch S5 is disconnected
and the output voltage is the result of the C1 charge transfer
into the output load. The current is limited by three mains
parameters:
− the Ron of the switching MOS (S1 through S4)
− the operating frequency
− the C1/C2 ratio and their ESR
The first parameters are depending upon the internal
structure and size of the NMOS/PMOS devices used to
design the chip. The third parameter is adjustable by the user
and, beside the micro farad values, the type of capacitors
plays a significant role. As a matter of fact, using a low cost
electrolytic model will ruin the efficiency due to the high
ESR of such a capacitor. It is highly recommended to use
ceramic types, preferably from the X5R or X7R series, to
achieve the efficiency and the SIM_VCC output voltage
ripple. Table 2 summarizes the characteristics of the most
common type of capacitors.
Table 2. Comparison of Capacitor Types
Manufacturers
Type/Serie
Format
Max Value
Tolerance
Typ. Z @ 500 kHz
MURATA
CERAMIC/GRM225
0805
10 mF/6.3 V
+80%/−20%
30 mW
VISHAY
Tantalum/594C/593C
1206
10 mF/16 V
−
450 mW
VISHAY
Electrolytic/94SV
1206
10 mF/10 V
−20%/+20%
400 mW
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11
NCN6010
It is clear that, with nearly half an ohm of resistance is
series with the pure capacitor, the tantalum or the electrolytic
type will generate high voltage spikes and poor regulation in
the high frequency operating charge pump built into the
NCN6010. Moreover, with ESR in the 3.0 Ohm range, low
cost capacitors are not suitable for this application.
Figure 11 provides the schematic diagram of the simulated
charge pump circuit. Although this schematic does not
+
IC = 0
R3
0.5 R
+
Battery Pack
−
represent the accurate internal structure of the NCN6010, it
can be used for engineering purpose. The ABM devices S1,
S2, S4 and S5 have been defined in the PSPICE model to
represent the NMOS and PMOS used in the silicon. The
ESR value of C2 and C3 can be adjusted, at PSPICE level,
to cope with any type of external capacitors and are useful
to double check the behavior of the system as a function of
the external passives components.
V1
275 V
C1
4.7 mF
R1
0.1 R
+
S1
+
S4
+ +
− −
S
VOFF = 0.0 V
VON = 1.0 V
C3
220 nF
U2A
1
U1A
3
2
S5
+ +
− −
S
VOFF = 2.0 V
VON = 0.0 V
C2
1 mF
74HC14
74HC08
V2
U3A
2
LOAD
V1 = 0
V2 = 3
TD = 10 ns
+
TR = 10 ns
TF = 10 ns
PW = 600 ns −
PER = 1200 ns
2
E5
1
74HC14
R5
500 R
OUT+ IN+
OUT− IN−
EVALUE
if (V (%IN+, %IN−) > 80 mV, 5, 0)
+
−
V3
5.0 V
Figure 11. Charge Pump Simulation Schematic Diagram
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12
− −
S
VOFF = 2.0 V
VON = 0.0 V
Transfer Capacitor
S2
+ +
1
R4
0.05 R
R2
0.1 R
− −
S
VON = 1.0 V
VOFF = 0.0 V
NCN6010
The operating waveforms are given in Figure 12 to
illustrate the high peak current flowing in the transfer
capacitor. The real ripple voltage, coming from the
engineering board, is given in Figure 13.
6.0 V
SIM_VCC Output Voltage
Load = 10 mA
4.0 V
2.0 V
0V
V(C2:2)
2.0 A
Charge Pump Transfer
Capacitor Current
0A
SEL>>
−2.0 A
0
I(R4)
20
40
TIME (ms)
Figure 12. Simulated Charge Pump Typical Waveforms
Figure 13. SIM_VCC Output Voltage Ripple @ Iout = 10 mA
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13
60
14
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1
3
2
6
5
4
8
7
10
9
11
13
12
16
15
14
21
20
19
18
17
25
24
23
22
26
J1
IRQ
E
D2
D1
D0
D4
D3
Y7
D6
D5
B3
B2
B1
B0
B7
B6
B5
B4
R2
10 k
GND
R4
100 R
CLK
RST
I/O
RST
E
S3
I/O
1
TP3
MANUAL PWR_ON
1
TP2
1
TP1
1k
+3.3 V
GND
C5
100 nF
S4
MANUAL MOD_VCC
MOD
1
TP5
R6
10 k
GND
SIM_IO
Ctb
SIM_RST
RESET SIM_CLK
CLOCK
I/O
PWR_ON
Cta
SIM_VCC
MOD_VCC
STOP
VDD
RST
1
TP6
8
9
10
11
12
CLK
1
TP7
1
TP8
1
TP9
GND
S_IO
V CC
7
5
1
2
13
C4
220 nF
3
4
8
18
17
14
C2
1.0 mF
C3
100 nF
Figure 14. Engineering Test Board
GND
PWR
1
TP4
R5
10 k
GND
C1
47 mF
U1
NCN6010
+3.3 V
7
6
5
4
2
1
PWR_ON
+3.3 V
POL. DET
S1
+3.3 V
3
R3
GND
+3.3 V
MOD_VCC
GND
VDD ON
470 R
VPP
ISO7816
6
GND
SMARTCARD
I/O
GND
VCC
RST
CLK
C4
C8
Swb
Swa
J2
POL. DET
S2
+3.3 V
NCN6010
NCN6010
The layout of the PCB is a key parameter to avoid the
voltage spikes that could pollute the rest of the system.
Figure 16 represents a typical printed circuit lay out, based
on the schematic diagram given in Figure 14, highlighting
the large ground plane used in this engineering tool.
Obviously, a GSM application will use much less area, but
cares must be observed to locate the capacitors as close as
possible to the integrated circuit associated pins.
Capacitors C1, C2, C3, C4 and C5 are ceramic, X7R, 10 V,
surface mount.
Figure 15. Engineering Test Board Silk Layer
Figure 16. Engineering Test Board Top Layer
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15
NCN6010
PACKAGE DIMENSIONS
TSSOP−14
DTB SUFFIX
CASE 948G−01
ISSUE A
14X K REF
0.10 (0.004)
0.15 (0.006) T U
M
T U
V
S
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION A DOES NOT INCLUDE MOLD
FLASH, PROTRUSIONS OR GATE BURRS.
MOLD FLASH OR GATE BURRS SHALL NOT
EXCEED 0.15 (0.006) PER SIDE.
4. DIMENSION B DOES NOT INCLUDE
INTERLEAD FLASH OR PROTRUSION.
INTERLEAD FLASH OR PROTRUSION SHALL
NOT EXCEED 0.25 (0.010) PER SIDE.
5. DIMENSION K DOES NOT INCLUDE
DAMBAR PROTRUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL BE 0.08
(0.003) TOTAL IN EXCESS OF THE K
DIMENSION AT MAXIMUM MATERIAL
CONDITION.
6. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
7. DIMENSION A AND B ARE TO BE
DETERMINED AT DATUM PLANE −W−.
S
S
N
2X
14
L/2
0.25 (0.010)
8
M
B
−U−
L
PIN 1
IDENT.
F
7
1
0.15 (0.006) T U
N
S
DETAIL E
K
A
−V−
ÉÉÉ
ÇÇÇ
ÇÇÇ
ÉÉÉ
ÇÇÇ
K1
J J1
SECTION N−N
−W−
C
0.10 (0.004)
−T− SEATING
PLANE
D
G
H
DETAIL E
DIM
A
B
C
D
F
G
H
J
J1
K
K1
L
M
MILLIMETERS
MIN
MAX
4.90
5.10
4.30
4.50
−−−
1.20
0.05
0.15
0.50
0.75
0.65 BSC
0.50
0.60
0.09
0.20
0.09
0.16
0.19
0.30
0.19
0.25
6.40 BSC
0_
8_
INCHES
MIN MAX
0.193 0.200
0.169 0.177
−−− 0.047
0.002 0.006
0.020 0.030
0.026 BSC
0.020 0.024
0.004 0.008
0.004 0.006
0.007 0.012
0.007 0.010
0.252 BSC
0_
8_
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
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NCN6010/D