ETC AIC1845

AIC1845
Regulated 5V Charge Pump In SOT-23
DESCRIPTION
FEATURES
Ultralow Power: IIN = 13µA
Regulated 5V ±4% Output Voltage
The AIC1845 is a micropower charge pump
Output Current: 100mA (VIN =3.3V)
output. The input voltage range is 2.7V to 5.0V.
110mA (VIN =3.6V)
Input Range: 2.7V to 5.0V
No Inductors Needed
Extremely low operating current (13µA typical
Very Low Shutdown Current: <1µA
Internal Oscillator: 650KHz
Short-Circuit and Overtemperature Protection
6-Pin SOT-23 Package
capacitors at VIN and VOUT ) make the AIC1845
DC/DC converter that produces a regulated 5V
with no load) and a low external-part count (one
0.22µF flying capacitor and two small bypass
ideally suitable for small, battery-powered
applications.
The AIC1845 operates as a PSM (Pulse
Skipping Modulation) mode switched capacitor
voltage doubler to produce a regulated output
APPLICATIONS
and features with thermal shutdown capability
White or Blue LED Backlighting
SIM Interface Supplies for Cellular Telephones
Li-Ion Battery Backup Supplies
Local 3V to 5V Conversion
Smart Card Readers
PCMCIA Local 5V Supplies
and short circuit protection.
The AIC1845 is available in a 6-pin SOT-23
package.
TYPICAL APPLICATION CIRCUIT
VOUT
** R1
U1
1-Cell
1 VOUT
CIN
2.2µF
Li-ion Battery
2
3
GND
SHDN
C+ 6
VIN
C-
*
COUT
2.2µF
*
*
*
5
4
0.22µF
CFLY
AIC1845
Regulated 5V Output from 2.7V to 5.0V Input
*
WLED series number: NSPW310BS, VF=3.6V, IF=20mA
**
R1 =
VOUT − VF
, NWLED: The number of WLED
IF × N WLED
CIN, COUT: CELMK212BJ225MG (X5R) (0805), TAIYO YUDEN
CFLY
Analog Integrations Corporation
: CEEMK212BJ224KG (X7R) (0805), TAIYO YUDEN
Si-Soft Research Center
DS-1845P-03 010405
3A1, No.1, Li-Hsin Rd. I, Science Park, Hsinchu 300, Taiwan, R.O.C.
TEL: 886-3-5772500
FAX: 886-3-5772510
www.analog.com.tw
1
AIC1845
ORDERING INFORMATION
AIC1845XXXX
PIN CONFIGURATION
PACKING TYPE
TR: TAPE & REEL
BG: BAG
SOT-23-6
TOP VIEW
PACKAGE TYPE
G: SOT-23-6
C+ VIN
6
5
C4
(MARK SIDE)
1
2
3
VOUT GND SHDN
C: COMMERCIAL
P: LEAD FREE COMMERCIAL
Example: AIC1845CGTR
in SOT-23-6 Package & Taping & Reel
Packing Type
AIC1845PGTR
in Lead Free SOT-23-6 Package & Taping
& Reel Packing Type
SOT-23-6 Marking
Part No.
Marking
AIC1845CG
BO50
AIC1845PG
BO50P
ABSOLUATE MAXIMUM RATINGS
VIN to GND
6V
VOUT to GND
6V
All Other Pins to GND
6V
VOUT Short-Circuit Duration
Operating Temperature Range
Junction Temperature
Storage Temperature Range
Lead Temperature (Sordering 10 Sec.)
Continuous
-40°C to 85 °C
125°C
-65°C to 150 °C
260°C
Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
TEST CIRCUIT
Refer to TYPICAL APPLICATION CIRCUIT.
2
AIC1845
ELECTRICAL CHARACTERISTICS
(TA=25°C, CFLY=0.22µF, CIN=2.2µF, COUT=2.2µF, unless otherwise specified.) (Note 1)
PARAMETER
TEST CONDITIONS
Input Voltage
Output Voltage
Continuous Output Current
Supply Current
2.7V≤ VIN< 3.3V,
IOUT≤ 30mA
3.3V≤ VIN≤ 5.0V,
IOUT≤ 60mA
VIN=3V, VOUT=5.0V
SHDN =VIN
2.7V≤ VIN≤ 5.0V,
IOUT=0 , SHDN =VIN
2.7V≤ VIN≤ 5.0V,
SYMBOL
MIN.
VIN
2.7
4.8
TYP.
5.0
MAX.
UNIT
5.0
V
5.2
VOUT
V
4.8
IOUT
5.0
5.2
60
mA
ICC
13
30
µA
I SHDN
0.01
1.0
µA
VR
60
mV
Shutdown Current
IOUT=0 , SHDN =0V
Output Ripple
VIN =3V , IOUT=50mA
Efficiency
VIN =2.7V , IOUT=30mA
η
83
%
Switching Frequency
Oscillator Free Running
fOSC
650
KHz
Shutdown Input Threshold
(High)
Shutdown Input Threshold
(Low)
Shutdown Input Current
(High)
Shutdown Input Current
(Low)
VIH
1.4
V
VIL
0.3
V
SHDN =VIN
IIH
-1
1
µA
SHDN = 0V
IIL
-1
1
µA
Vout Turn On Time
VIN =3V, IOUT = 0mA
tON
0.5
mS
Output Short Circuit Current
VIN=3V, VOUT= 0V,
SHDN = VIN
ISC
170
mA
Note1: Specifications are production tested at TA=25°C. Specifications over the -40°C to 85°C operating
temperature range are assured by design, characterization and correlation with Statistical Quality
Controls (SQC).
3
AIC1845
TYPICAL PERFORMANCE CHARACTERISTICS
(CIN, COUT: CELMK212BJ225MG, CFLY: CEEMK212BJ224KG)
5.15
20
IOUT=25mA
COUT=10µF
CFLY=1µF
5.05
Supply Current (µΑ)
Output Voltage (V)
5.10
TA = -40°C
5.00
4.95
TA =25°C
4.90
TA=-40°C
15
10
IOUT=0µA
CFLY=1µF
VSHDN=VIN
TA =85°C
4.85
2.5
3.0
3.5
4.0
4.5
5
5.0
2.5
3.0
3.5
Supply Voltage (V)
Output Voltage (V)
Output Voltage (V)
5.1
5.05
VIN=3.6V
5.00
4.95
5.0
4.9
4.8
VIN=3.3V VIN=3.6V
4.7
TA=25°C
CFLY=0.22µF
COUT=2.2µF
VIN=3.3V
4.90
VIN=2.7V
4.85
0
20
4.6
VIN=3.0V
40
60
80
100
120
140
4.5
160
0
10
20
30
VIN=2.7V
40
50
60
70
VIN=3.0V
80
90 100 110 120 130
Output Current (mA)
Output Current (mA)
Fig. 4 Load Regulation
Fig. 3 Load Regulation
100
100
VIN=2.7V
90
60
VIN=3.0V
50
VIN=3.3V
40
VIN=3.6V
Efficiency (%)
CT=25°C
CFLY=1µF
70
VIN=2.7V
VIN=3.0V
80
70
60
20
TA=25°C
CFLY=0.22µF
40
10
0.001
VIN=3.6V
VIN=3.3V
50
30
0
5.0
5.2
TA=25°C
COUT=10µF
CFLY=1µF
5.10
Efficiency (%)
4.5
Fig. 2 No Load Supply Current vs. Supply Voltage
5.15
80
4.0
Supply Voltage (V)
Fig. 1 Line Regulation
90
TA=85°C
TA=25°C
0.01
0.1
1
Output Current (mA)
Fig. 5 Efficiency
10
100
30
0.01
0.1
1
10
100
Output Current (mA)
Fig. 6 Efficiency
4
AIC1845
TYPICAL PERFORMANCE CHARACTERISTICS
50
(Continued)
175
45
150
35
Output Ripple (mV)
Output Ripple (mV)
40
VIN=3.6V
30
25
VIN=3.3V
20
15
VIN=3.0V
10
0
COUT=10µF
VIN=2.7V
5
0
20
40
60
100
120
VIN=3.6V
100
75
VIN=3.3V
50
VIN=2.7V
CFLY=0.22µF
0
140
0
20
40
Fig.7 Output Current vs. Output Ripple
60
80
100
120
Output Current (mA)
Output Current (mA)
140
Fig. 8 Output Current vs. Output Ripple
1000
5.05
VIN=2.5V
Output Voltage (V)
900
Frequency (KHz)
COUT=2.2µF
VIN=3.0V
25
CFLY=1µF
80
125
800
700
600
5.00
VIN=3.0V
CFLY=1µF
IOUT=50mA
4.95
4.90
500
400
-60
-40
-20
0
20
40
60
80
100
120
4.85
-60
140
Temperature (°C)
Fig. 9 Frequency vs. Temperature
-40
-20
Fig. 10
0
20
40
60
80
100
120
140
Temperature (°C)
Output Voltage vs. Temperature
220
TA=25°C
CFLY=1µF
260
240
Short-Circuit Current (mA)
Short-Circuit Current (mA)
280
220
200
180
160
140
120
100
200
180
160
140
120
TA=25°C
CFLY=0.22µF
100
2.5
3.0
3.5
4.0
4.5
5.0
Supply Voltage (V)
Fig. 11 Short-Circuit Current vs. Supply Voltage
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Supply Voltage (V)
Fig. 12 Short-Circuit Current vs. Supply Voltage
5
AIC1845
TYPICAL PERFORMANCE CHARACTERISTICS
(Continued)
CN
CN
VOUT
VOUT
Fig. 13
Output Ripple
VIN=3.0V, IOUT=50mA, COUT=10µF,CFLY=1µF
VOUT
IOUT
VOUT
Fig. 15 Load Transient Response
VIN=3.0V, IOUT=0mA~50mA,COUT=10µF, CFLY=1µF
VOUT
V SHDN
Fig. 17 Start-Up Time
VIN=3.0V, IOUT=0A, COUT=10µF
Fig. 14 Output Ripple
VIN=3.0V, IOUT=50mA, COUT=2.2µF, CFLY=0.22µF
IOUT
Fig. 16 Load Transient Response
VIN=3.0V, IOUT=0mA~50mA,COUT=2.2µF, CFY=0.22µF
VOUT
V SHDN
Fig. 18 Start-Up Time
VIN=3.0V, IOUT=0A, COUT=2.2µF
6
AIC1845
BLOCK DIAGRAM
VOUT
2
COUT
2.2µF
C+
1
VIN
CFLY
2
Control
0.22µF
CIN
2.2µF
COMP
CVREF
SHDN
1
PIN DESCRIPTIONS
PIN 1:VOUT -
PIN 2: GND -
Regulated output voltage. For the
best performance, VOUT should be
bypassed with a 2.2µF (min) low
ESR capacitor with the shortest
distance in between.
Ground. Should be tied to a
ground plane for best performance.
PIN 3: SHDN - Active low shutdown input. A low
voltage on SHDN disables the
AIC1845. SHDN is not allowed to
float.
PIN 4: C-
-
Flying capacitor negative terminal.
PIN 5: VIN
-
Input supply voltage. VIN should
be bypassed with a 2.2µF (min)
low ESR capacitor.
PIN 6: C+
-
Flying capacitor positive terminal.
7
AIC1845
APPLICATION INFORMATION
Introduction
Short Circuit/Thermal Protection
AIC1845 is a micropower charge pump DC/DC
AIC1845 owns a built-in short circuit current
converter that produces a regulated 5V output
limiting as well as an over temperature protection.
with an input voltage range from 2.7V to 5.0V. It
During the short circuit condition, the output
utilizes the charge pump topology to boost VIN to
current
a regulated output voltage. Regulation is obtained
approximately 170mA. This short circuit current
by sensing the output voltage through an internal
will cause a rise in the internal IC junction
resistor divider. A switched doubling circuit
temperature. When the die temperature exceeds
enables the charge pump when the feedback
150°C, the thermal protection will shut the charge
voltage is lower than the trip point of the internal
pump switching operation down and the die
comparator, and vice versa. When the charge
temperature will reduce afterwards. Once the die
pump is enabled, a two-phase non-overlapping
temperature drops below 135°C, the charge pump
clock activates the charge pump switches. To
switching circuit will re-start. If the fault doesn’t
maximize battery life for a battery-used application,
eliminate, the above protecting operation will
quiescent current is limited up to 13µA.
repeat again and again. It allows AIC1845 to
is
automatically
constrained
at
continuously work at short circuit condition without
Operation
damaging the device.
This kind of converter uses capacitors to store
and transfer energy. Since the capacitors can’t
change their voltage level abruptly, the voltage
Shutdown
ratio of VOUT over VIN is limited to some range.
In shutdown mode, the output is disconnected
Capacitive voltage conversion is obtained by
from input. The input current gets extremely low
switching a capacitor periodically. It first charges
since most of the circuitry is turned off. Due to
the capacitor by connecting it across a voltage
high impedance, shutdown pin can’t be floated.
source and then connects it to the output.
Referring to Fig. 19, during the on state of internal
clock, Q1 and Q4 are closed, which charges C1 to
Efficiency
VIN level. During the off state, Q3 and Q2 are
Referring to Fig. 20 and Fig. 21 here shows the
closed. The output voltage is VIN plus VC1, that is,
circuit of charge pump at different states of
2VIN.
operation. RDS-ON is the resistance of the switching
VIN
Q2 VOUT
Q1
CIN
COUT
C1
Q3
Q4
Fig. 19 The circuit of charge pump
element at conduction. ESR is the equivalent
series resistance of the flying capacitor C1. IONAVE
and IOFF-AVE are the average current during on
state and off state, respectively. D is the duty
cycle, which means the proportion the on state
takes. Let’s take advantage of conversation of
charge for capacitor C1. Assume that the
capacitor C1 has reached its steady state. The
amount of charge flowing into C1 during on state
is equal to that flowing out of C1 at off state.
8
AIC1845
ION− AVE × DT = IOFF − AVE × (1 − D)T
(1)
External Capacitor Selection
ION- AVE × D = IOFF - AVE × (1 − D)
(2)
Three external capacitors, CIN, COUT and CFLY,
determine AIC1845 performances, in the aspects
IIN = ION- AVE × D + IOFF- AVE × (1 − D)
= 2 × ION- AVE × D
(3)
= 2 × IOFF- AVE × (1 - D)
of output ripple voltage, charge pump strength
and transient. Optimum performance can be
obtained by the use of ceramic capacitors with
low ESR. Due to high ESR, capacitors of tantalum
IOUT = IOFF- AVE × (1 − D)
and aluminum are not recommended for charge
IIN = 2IOUT
pump application.
For AIC1845, the controller takes the PSM (Pulse
Skipping Modulation) control strategy. When the
To reduce noise and ripple, a low ESR ceramic
duty cycle is limited to 0.5, there will be:
capacitor, ranging from 2.2µF to 10µF, is
ION- AVE × 0.5 × T = IOFF- AVE × (1 − 0.5) × T
COUT determines the amount of output ripple
ION- AVE = IOFF- AVE
According to the equation (4), we know that as
long as the flying capacitor C1 is at steady state,
the input current is twice the output current. The
efficiency of charge pump is given below:
V
V
V
×I
×I
η = OUT OUT = OUT OUT = OUT
VIN × IIN
VIN × 2IOUT
2VIN
VIN
ION
Q2
Q1
RDS-ON
CIN
Q3
recommended for CIN and COUT. The value of
COUT
ESR
C1
VOUT
voltage. An output capacitor with larger value
..........(5)
results in smaller ripple.
CFLY is critical for the strength of charge pump.
The larger CFLY is, the larger output current and
smaller ripple voltage obtain. However, large CIN
......(6)
and COUT are expected when a large ....
CFLY
applies.
The ratio of CIN (as well as COUT) to CFLY should
be approximately 10:1.
The value of capacitors, which is used under
operation conditioin, determines the performance
Q4
of a charge pump converter. And two factors, as
follows, affect the capacitance of capacitor.
RDS-ON
Fig. 20 The on state of charge pump circuit
1. Material: Ceramic capacitors of different
materials, such as X7R, X5R, Z5U and Y5V,
VIN
CIN
RDS-ON
Q2
Q1
Q3
VOUT
COUT
ESR
Q4
RDS-ON
C1
IOFF
have different tolerance in temperature and
differnet cpacitance loss. For example, a X7R
or X5R type of capacitor can retain most of
the capacitance at temperature from -40°C to
85°C, but a Z5U or Y5V type will lose most of
the capacitance at that temperature range.
Fig. 21 The off state of charge pump circuit
9
AIC1845
2. Package Size: A ceramic capacitor with
large volume (0805), gets a lower ESR than
a small one (0603). Therefore, large devices
switching element is
2
×
PRDS −ON ≅ IOUT
can improve more transient response than
2
× RDS - ON
0.5(1 − 0.5)
2
= IOUT
× 8R DS − ON
small ones.
Table 1 lists the recommended components for
AIC1845 application.
2
PESR ≅ IOUT
× ESR ×
2
= IOUT
× 4ESR
Table.1 Bill of Material
Design-
Part
ator
Type
CIN
2.2µ
CFLY
0.22µ
COUT
2.2µ
Description
1
0.5(1 − 0.5)
Vendor
Phone
In fact, no matter the current is at on state or off
state, it decays exponentially rather than flows
CELMK212BJ-
TAIYO
225MG (X5R)
YUDEN
CEEMK212BJ
TAIYO
-224KG (X7R)
YUDEN
CELMK212BJ-
TAIYO
225MG (X5R)
YUDEN
(02) 27972155~9
steadily. And the root mean square value of
exponential decay is not equal to that of steady
(02) 27972155~9
flow. That is why the approximation comes from.
Let’s treat the charge pump circuit in another
(02) 27972155~9
approach and lay the focus on the flying capacitor
C1. Referring to Fig. 20, when the circuit is at the
Power Dissipation
on state, the voltage across C1 is:
Let’s consider the power dissipation of RDS-ON
and ESR. Assume that the RDS-ON of each internal
VC-ON (t) = VIN − 2R DS−ON × ION (t) - ESR × ION (t) …(9)
switching element in AIC1845 is equal and ESR
is the equivalent series resistance of CFLY (ref to
Fig. 20 and Fig. 21). The approximation of the
power loss of RDS-ON and ESR are given below:
PRDS−ON
2
≅ ION
- AVE
2
× 2RDS − ON × D + IOFF
- AVE
× 2RDS − ON × (1 − D)
IIN 2
I
) × 2RDS- ON × D + ( OUT )2 × 2RDS- ON × (1 - D)
2D
1- D
2IOUT 2
I
=(
) × 2RDS -ON × D + ( OUT )2 × 2RDS -ON × (1 - D)
2D
1- D
2
2
2
2
= IOUT × ( RDS- ON ) + IOUT × (
RDS -ON )
D
1- D
2
2
= IOUT
×
× RDS -ON
D(1 - D)
=(
2
2
PESR ≅ ION
− AVE × ESR × D + I OFF − AVE × ESR × (1 − D)
I
IIN 2
) × ESR × D + ( OUT ) 2 × ESR × (1 − D)
2D
1− D
1
1
2
2
= IOUT
× ESR × + IOUT
× ESR ×
D
1- D
1
2
= IOUT × ESR ×
D(1 - D)
When the duty cycle is 0.5, the power loss of
=(
The average of VC1 during the on state is:
VC−ON− AVE = VIN − 2R DS−ON × ION− AVE − ESR × ION− AVE
……………………….(10)
Similarly, referring to Fig. 21, when the circuit is
at the off state, the voltage of C1 is:
VC-OFF (t) =
VOUT − VIN + 2R DS-ON × IOFF (t) + ESR × IOFF (t)
……………………………(11)
The average of VC1 during the off state is:
VC−OFF− AVE =
VOUT − VIN + 2R DS−ON × IOFF− AVE ..........
+ ESR(7)
× IOFF− AVE
………………..(12)
The difference of charge stored in C1 between on
state and off state is the net charge transferred to
the output in one cycle.
10
AIC1845
∆Q = Q ON - Q OFF
= C1 × (VC1−ON− AVE − VC1−OFF − AVE )
= C1 × (2VIN - VOUT - 2R DS-ON × ION- AVE - 2R DS-ON × IOFF- AVE - ESR × ION− AVE - ESR × IOFF- AVE )
………(13)
I
I
I
IOUT
− 2R DS −ON × OUT - ESR × OUT - ESR × OUT )
1- D
D
1− D
D
1
+ ESR) × IOUT ×
]
D(1 − D)
= C1 × (2VIN − VOUT − 2R DS −ON ×
= C1 × [2VIN − VOUT − (2R DS−ON
Thus the output current can be written as
IOUT = f × ∆Q = f × (Q ON − Q OFF )
= f × C1 × [2VIN − VOUT - (2R DS-ON + ESR ) × IOUT ×
(14)
1
]
D(1 - D)
When the duty cycle is 0.5, the output current can be written as:
IOUT = f × C1 × [2VIN − VOUT − (2R DS−ON + ESR) × IOUT ×
1
]
0.5(1 − 0.5)
(15)
= fC1 × [2VIN − VOUT − (8R DS−ON + 4ESR) × IOUT ]
And equation (15) can be re-written as:
2VIN − VOUT =
1
× IOUT + (8R DS−ON + 4ESR) × IOUT
fC1
According the equation (16), when the duty cycle
is 0.5, the equivalent circuit of charge pump is
shown in Fig. 22. The term 8RDS-ON is the total
effect of switching resistance, 1/fC1 is the effect
(16)
IOUT
2VIN
1/fC1
8RDS-ON
VOUT
4ESR
LOAD
COUT
of flying capacitor and 4ESR is its equivalent
resistance.
Fig. 22 The euqivalent circuit of charge pump
From the equivalent circuit shown in Fig. 22, it is
Layout Considerations
seen that the terms 1/fC1, 4ESR and 8RDS-ON
should be as small as possible to get large output
Due to the switching frequency and high transient
current. However, for users, since the RDS-ON is
current of AIC1845, careful consideration of PCB
fixed and manufactured in IC, what we can do is
layout is necessary. To achieve the best
to lower 1/fC1 and ESR. However even the effect
performance of AIC1845, minimize the distance
of 1/fC1 and ESR can be kept as small as
between
every
possible, the term 8RDS-ON still dominates the
minimize
every
role that limits the maximum output current.
maximum trace width. Make sure each device
two
components
connection
length
and
also
with
a
connects to immediate ground plane. Fig. 23 to
Fig. 25 show the recommended layout.
11
AIC1845
Fig. 23 Top layer
Fig. 24 Bottom layer
Fig. 25 Topover layer
APPLICATION EXAMPLES
VIN
CIN
2.2µ
1
2
3
VOUT
GND
VIN
SHDN
U1
2 GND
CAP+
VIN
3 SHDN
U2
CAP-
6
CFLY1
5
VOUT
COUT
2.2µF
0.22µF
4
AIC1845
1 VOUT
VSHDN
CAP+
CAP-
6
CFLY2
0.22µF
5
4
AIC1845
CIN, COUT : TAIYO YUDEN Ceramic Capacitor, CELMK212BJ225MG (X5R) (0805)
CFLY1, CFLY2: TAIYO YUDEN Ceramic Capacitor, CEEMK212BJ224KG (X7R) (0805)
Fig. 26 Parallel Two AIC1845 to Obtain the Regulated 5V Output with large output current.
USB
CIN
2.2µF
VOUT
1
2
3
VSHDN
VOUT
GND
SHDN
U1
CAP+
VIN
CAP-
6
5
4
COUT
2.2µF
CFLY
0.22µF
AIC1845
CIN, COUT: TAIYO YUDEN Ceramic Capacitor, CELMK212BJ225MG (X5R) (0805)
: TAIYO YUDEN Ceramic Capacitor, CEEMK212BJ224KG (X7R) (0805)
CFLY1
Fig. 27 Regulated 5V from USB
12
AIC1845
PHYSICAL DIMENSIONS (unit: mm)
SOT-23-6
D
A
A
e
e1
SEE VIEW B
b
WITH PLATING
c
A
A2
SOT-26
MILLIMETERS
MIN.
MAX.
A
0.95
1.45
A1
0.05
0.15
A2
0.90
1.30
b
0.30
0.50
c
0.08
0.22
D
2.80
3.00
E
2.60
3.00
E1
1.50
1.70
E
E1
S
Y
M
B
O
L
0.95 BSC
1.90 BSC
L
0.30
L1
θ
0.60
0.60 REF
0°
8°
0.25
A1
BASE METAL
SECTION A-A
e
e1
GAUGE PLANE
SEATING PLANE
θ
L
L1
VIEW B
Note:
Information provided by AIC is believed to be accurate and reliable. However, we cannot assume responsibility for use of any circuitry
other than circuitry entirely embodied in an AIC product; nor for any infringement of patents or other rights of third parties that may result
from its use. We reserve the right to change the circuitry and specifications without notice.
Life Support Policy: AIC does not authorize any AIC product for use in life support devices and/or systems. Life support devices or
systems are devices or systems which, (I) are intended for surgical implant into the body or (ii) support or sustain life, and whose failure
to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in
a significant injury to the user.
13