DATASHEET

ICL7663S
Data Sheet
October 2, 2015
CMOS Programmable Micropower
Positive Voltage Regulator
FN3180.6
Features
The ICL7663S Super Programmable Micropower Voltage
Regulator is a low power, high efficiency positive voltage
regulator which accepts 1.6V to 16V inputs and provides
adjustable outputs from 1.3V to 16V at currents up to 40mA.
It is a direct replacement for the industry standard ICL7663B
offering wider operating voltage and temperature ranges,
improved output accuracy (ICL7663SA), better temperature
coefficient, guaranteed maximum supply current, and
guaranteed line and load regulation. All improvements are
highlighted in the electrical characteristics section. Critical
parameters are guaranteed over the entire commercial
and industrial temperature ranges. The ICL7663S/SA
programmable output voltage is set by two external
resistors. The 1% reference accuracy of the ICL7663SA
eliminates the need for trimming the output voltage in most
applications.
The ICL7663S is well suited for battery powered supplies,
featuring 4A quiescent current, low VIN to VOUT differential,
output current sensing and logic input level shutdown
control. In addition, the ICL7663S has a negative
temperature coefficient output suitable for generating a
temperature compensated display drive voltage for LCD
displays.
• Guaranteed 10A Maximum Quiescent Current Over All
Temperature Ranges
• Wider Operating Voltage Range - 1.6V to 16V
• Guaranteed Line and Load Regulation Over Entire
Operating Temperature Range Optional
• 1% Output Voltage Accuracy (ICL7663SA)
• Output Voltage Programmable from 1.3V to 16V
• Improved Temperature Coefficient of Output Voltage
• 40mA Minimum Output Current with Current Limiting
• Output Voltages with Programmable Negative
Temperature Coefficients
• Output Shutdown via Current-Limit Sensing or External
Logic Level
• Low Input-to-Output Voltage Differential
• Improved Direct Replacement for Industry Standard
ICL7663B and Other Second-Source Products
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Low-Power Portable Instrumentation
• Pagers
Pinout
• Handheld Instruments
ICL7663S
(PDIP, SOIC)
TOP VIEW
• LCD Display Modules
• Remote Data Loggers
SENSE
1
8
VIN+
VOUT2
2
7
VTC
VOUT1
3
6
VSET
GND
4
5
SHDN
1
• Battery-Powered Systems
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 1999-2005, 2015. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
ICL7663S
Ordering Information
TEMP. RANGE
(°C)
PART NUMBER
PACKAGE
PKG. DWG. #
ICL7663SCBA* (No longer
available, recommended replacement:
ICL7663SCBAZA)
0 to 70
8 Ld SOIC (N)
M8.15
ICL7663SCBAZA*
(See Note)
0 to 70
8 Ld SOIC (N)
(Pb-free)
M8.15
ICL7663SCPA (No longer
available, recommended replacement:
ICL7663SCPAZ)
0 to 70
8 Ld PDIP
E8.3
ICL7663SCPAZ
(See Note)
0 to 70
8 Ld PDIP**
(Pb-free)
E8.3
ICL7663SACBA* (No longer
available, recommended replacement:
ICL7663SACBAZA, ICL7663SACBAZA-T)
0 to 70
8 Ld SOIC (N)
M8.15
ICL7663SACBAZA*
(See Note)
0 to 70
8 Ld SOIC (N)
(Pb-free)
M8.15
ICL7663SACPA
0 to 70
8 Ld PDIP
E8.3
8 Ld SOIC (N)
(Pb-free)
M8.15
ICL7663SAIBAZA
(See Note)
-25 to 85
*Add “-T” suffix to part number for tape and reel packaging.
**Pb-free PDIPs can be used for through hole wave solder processing only. They are not intended for use in Reflow solder processing applications.
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are
MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
2
FN3180.6
October 2, 2015
ICL7663S
Absolute Maximum Ratings
Thermal Information
Input Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+18V
Any Input or Output Voltage (Note 1)
Terminals 1, 2, 3, 5, 6, 7 . . . . . . . . . . . . . VIN+ 0.3V to GND -0.3V
Output Source Current
Terminal 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA
Terminal 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mA
Output Sinking Current
Terminal 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -10mA
Thermal Resistance (Typical, Note 2)
Operating Conditions
Temperature Range
ICL7663SC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
ICL7663SI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-25°C to 85°C
JA (°C/W)
JC (°C/W)
CERDIP Package. . . . . . . . . . . . . . . . .
115
30
PDIP Package* . . . . . . . . . . . . . . . . . .
150
N/A
Plastic SOIC Package . . . . . . . . . . . . .
180
N/A
Maximum Junction Temperature
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
CERDIP Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175°C
Maximum Storage Temperature Range . . . . . . . . . . . -65°C to 150°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300°C
(SOIC - Lead Tips Only)
*Pb-free PDIPs can be used for through hole wave solder processing
only. They are not intended for use in Reflow solder processing
applications.
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1. Connecting any terminal to voltages greater than (V+IN + 0.3V) or less than (GND - 0.3V) may cause destructive device latch-up. It is
recommended that no inputs from sources operating on external power supplies be applied prior to ICL7663S power-up.
2. JA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
PARAMETER
Input Voltage
Specifications Below Applicable to Both ICL7663S and ICL7663SA, Unless Otherwise Specified. V+IN = 9V,
VOUT = 5V, TA = 25°C, Unless Otherwise Specified. Notes 4, 5. See Test Circuit, Figure 7
SYMBOL
V+IN
TEST CONDITIONS
ICL7663S
ICL7663SA
Quiescent Current
IQ
V+IN = 16V
Temperature
Coefficient
Line Regulation
VSET
VSET
T
VSET
ISET
Shutdown Input Current
ISHDN
Shutdown Input Voltage
VSHDN
Sense Pin Input Current
ISENSE
3
MAX
UNITS
TA = 25°C
1.5
-
16
V
0°C < TA < 70°C
1.6
-
16
V
-25°C < TA < 85°C
1.6
-
16
V
0°C < TA < 70°C
1.6
-
16
V
-25°C < TA < 85°C
1.6
-
16
V
0°C < TA < 70°C
-
-
10
A
-25°C < TA < 85°C
-
-
10
A
0°C < TA < 70°C
-
-
12
A
-25°C < TA < 85°C
-
-
12
A
IOUT1 = 100A, VOUT = VSET
ICL7663S
TA = 25°C
1.2
1.3
1.4
V
ICL7663SA
TA = 25°C
1.275
1.29
1.305
V
0°C < TA < 70°C
-
100
-
ppm
-25°C < TA < 85°C
-
100
-
ppm
0°C < TA < 70°C
-
0.03
-
%/V
-25°C < TA < 85°C
-
0.03
0.3
%/V
0°C < TA < 70°C
-
0.01
10
nA
-25°C < TA < 85°C
-
0.01
10
nA
-
0.01
10
nA
VSHDN HI: Both VOUT Disabled
1.4
-
-
V
VSHDN LO: Both VOUT Enable
-
-
0.3
V
-
0.01
10
nA
2V < VIN < 15V
VSET’ VIN
VSET Input Current
TYP
1.4V  VOUT  8.5V, No Load
V+IN = 9V
Reference Voltage
MIN
FN3180.6
October 2, 2015
ICL7663S
Electrical Specifications
PARAMETER
Specifications Below Applicable to Both ICL7663S and ICL7663SA, Unless Otherwise Specified. V+IN = 9V,
VOUT = 5V, TA = 25°C, Unless Otherwise Specified. Notes 4, 5. See Test Circuit, Figure 7 (Continued)
SYMBOL
MIN
TYP
MAX
UNITS
-
0.5
-
V
V+IN = 2V, IOUT1 = 1mA
-
170
350

V+IN = 9V, IOUT1 = 2mA
-
50
100

V+IN = 15V, IOUT1 = 5mA
-
35
70

VOUT
1mA < IOUT2 < 20mA
-
1
3

IOUT
50A < IOUT1 < 5mA
-
2
10

Available Output Current
(VOUT2)
IOUT2
3V  VIN  16V, VIN - VOUT2 = 1.5V
40
-
-
mA
Negative Tempco Output
(Note 4)
VTC
Open Circuit Voltage
-
0.9
-
V
ITC
Maximum Sink Current
0
8
2.0
mA
Temperature Coefficient
VTC
Open Circuit
-
+2.5
-
mV/°C
TA = 25°C
-
-
1.0
A
0°C < TA < 70°C
-
0.2
5.0
A
-25°C < TA < 85°C
-
0.2
5.0
A
Sense Pin Input Threshold
VCL
Input-Output Saturation
Resistance (Note 3)
RSAT
Load Regulation
TEST CONDITIONS
T
Minimum Load Current
IL(MIN)
Includes VSET Divider
NOTES:
3. This parameter refers to the saturation resistance of the MOS pass transistor. The minimum input-output voltage differential at low current (under
5mA), can be determined by multiplying the load current (including set resistor current, but not quiescent current) by this resistance.
4. This output has a positive temperature coefficient. Using it in combination with the inverting input of the regulator at VSET, a negative
coefficient results in the output voltage. See Figure 9 for details. Pin will not source current.
5. All pins are designed to withstand electrostatic discharge (ESD) levels in excess of 2000V.
6. All significant improvements over the industry standard ICL7663 are highlighted.
Functional Diagram
V+IN
3
8
VOUT1
2
1
C
6
A
7
REF
B
5
4
GND
4
VOUT2
SENSE
VSET
VTC
SHUTDOWN
GND
FN3180.6
October 2, 2015
ICL7663S
Typical Performance Curves
2.0
5.000
4.995
1.8
TA = 25°C
4.990
V+ = 9.0V
V+IN - VOUT1 (V)
VOUT (V)
4.985
4.980
4.975
4.970
4.965
1.2
1.0
0.6
4.955
0.2
10-2
10-1
100
101
V+IN = 9V
0.8
0.4
10-3
V+IN = 2V
1.4
4.960
4.950
TA = 25°C
1.6
V+IN = 15V
0
102
0
2
4
6
FIGURE 1. VOUT2 OUTPUT VOLTAGE AS A FUNCTION OF
OUTPUT CURRENT
100
1.8
90
TA = 25°C
1.2
PSRR (dB)
V+IN - VOUT1 (V)
70
V+IN = 2V
1.0
0.8
0.6
16
18
20
VIN = 9.0V
60
VIN = 2V
50
40
30
V+IN = 9V
0.4
20
V+IN = 15V
0.2
10
0
5
10
15
20
25
30
35
40
45
0
10-2
50
10-1
100
101
FREQUENCY (Hz)
IOUT2 (mA)
FIGURE 3. VOUT2 INPUT-OUTPUT DIFFERENTIAL vs
OUTPUT CURRENT
102
1k
FIGURE 4. NPUT POWER SUPPLY REJECTION RATIO
5.0
5.00
4.5
4.75
TA = -20°C
4.0
4.50
TA = -25°C
3.5
3.0
4.00
TA = -70°C
2.5
2.0
3.50
3.25
1.0
3.00
0.5
2.75
2
4
6
8
10
12
14
V+IN (V)
FIGURE 5. QUIESCENT CURRENT AS A FUNCTION OF
INPUT VOLTAGE
5
16
V+ = 9V
3.75
1.5
0
V+ = 15V
4.25
IO (A)
IO (A)
14
80
1.4
0
12
FIGURE 2. VOUT1 INPUT-OUTPUT DIFFERENTIAL vs
OUTPUT CURRENT
2.0
0
10
IOUT1 (mA)
IOUT (mA)
1.6
8
2.50
V+ = 2V
-20
0
20
40
60
80
TEMPERATURE (°C)
FIGURE 6. QUIESCENT CURRENT AS A FUNCTION OF
TEMPERATURE
FN3180.6
October 2, 2015
ICL7663S
Detailed Description
The ICL7663S is a CMOS integrated circuit incorporating all
the functions of a voltage regulator plus protection circuitry
on a single monolithic chip. Referring to the Functional
Diagram, the main blocks are a bandgap-type voltage
reference, an error amplifier, and an output driver with both
PMOS and NPN pass transistors.
The bandgap output voltage, trimmed to 1.29V 15mV for
the ICL7663SA, and the input voltage at the VSET terminal
are compared in amplifier A. Error amplifier A drives a
P-channel pass transistor which is sufficient for low (under
about 5mA) currents. The high current output is passed by
an NPN bipolar transistor connected as a follower. This
configuration gives more gain and lower output impedance.
Logic-controlled shutdown is implemented via a N-Channel
MOS transistor. Current-sensing is achieved with
comparator C, which functions with the VOUT2 terminal. The
ICL7663S has an output (VTC) from a buffer amplifier (B),
which can be used in combination with amplifier A to
generate programmable-temperature-coefficient output
voltages.
The amplifier, reference and comparator circuitry all operate
at bias levels well below 1A to achieve extremely low
quiescent current. This does limit the dynamic response of
the circuits, however, and transients are best dealt with
outside the regulator loop.
Basic Operation
The ICL7663S is designed to regulate battery voltages in the
5V to 15V region at maximum load currents of about 5mA to
30mA. Although intended as low power devices, power
dissipation limits must be observed. For example, the power
dissipation in the case of a 10V supply regulated down to 2V
with a load current of 30mA clearly exceeds the power
dissipation rating of the Mini-DIP:
(10 - 2) (30) (10-3) = 240mW
The circuit of Figure 8 illustrates proper use of the device.
CMOS devices generally require two precautions: every
input pin must go somewhere, and maximum values of
applied voltages and current limits must be rigorously
observed. Neglecting these precautions may lead to, at the
least, incorrect or nonoperation, and at worst, destructive
device failure. To avoid the problem of latchup, do not apply
inputs to any pins before supply voltage is applied.
Input Voltages - The ICL7663S accepts working inputs of
1.5V to 16V. When power is applied, the rate-of-rise of the
input may be hundreds of volts per microsecond. This is
potentially harmful to the regulators, where internal
operating currents are in the nanoampere range. The
0.047F capacitor on the device side of the switch will limit
inputs to a safe level around 2V/s. Use of this capacitor is
suggested in all applications. In severe rate-of-rise cases, it
6
may be advisable to use an RC network on the SHutDowN
pin to delay output turn-on. Battery charging surges,
transients, and assorted noise signals should be kept from
the regulators by RC filtering, zener protection, or even
fusing.
SENSE
RCL
VOUT2
VOUT1
+
0.047F
-
S2
VTC
S1
VOUT
R2
(7663 ONLY)
VSET
GND SHDN
+
M
IQ
RL
CL
R1
1A MIN
ON
S3
OFF 1M
1.4V < VSHDN < V+IN
NOTES:
7. S1 when closed disables output current limiting.
8. Close S2 for VOUT1, open S2 for VOUT2.
9. IQ quiescent currents measured at GND pin by meter M.
10. S3 when ON, permits normal operation, when OFF, shuts down
both VOUT1 and VOUT2.
FIGURE 7. ICL7663S TEST CIRCUIT
Output Voltages - The resistor divider R2/R1 is used to
scale the reference voltage, VSET, to the desired output
using the formula VOUT = (1 + R2/R1) VSET. Suitable
arrangements of these resistors, using a potentiometer,
enables exact values for VOUT to be obtained. In most
applications the potentiometer may be eliminated by using
the ICL7663SA. The ICL7663SA has VSET voltage
guaranteed to be 1.29V 15mV and when used with 1%
tolerance resistors for R1 and R2 the initial output voltage
will be within 2.7% of ideal.
The low leakage current of the VSET terminal allows R1 and
R2 to be tens of megohms for minimum additional quiescent
drain current. However, some load current is required for
proper operation, so for extremely low-drain applications it is
necessary to draw at least 1A. This can include the current
for R2 and R1.
Output voltages up to nearly the VIN supply may be obtained
at low load currents, while the low limit is the reference
voltage. The minimum input-output differential in each
regulator is obtained using the VOUT1, terminal. The inputoutput differential increases to 1.5V when using VOUT2.
Output Currents - Low output currents of less than 5mA are
obtained with the least input-output differential from the
VOUT1 terminal (connect VOUT2 to VOUT1). Where higher
currents are needed, use VOUT2 (VOUT1, should be left
open in this case).
FN3180.6
October 2, 2015
ICL7663S
High output currents can be obtained only as far as package
dissipation allows. It is strongly recommended that output
current-limit sensing be used in such cases.
Current-Limit Sensing - The on-chip comparator (C in the
Functional Diagram) permits shutdown of the regulator
output in the event of excessive current drain. As Figure 8
shows, a current-limiting resistor, RCL, is placed in series
with VOUT2 and the SENSE terminal is connected to the
load side of RCL. When the current through RCL is high
enough to produce a voltage drop equal to VCL (0.5V) the
voltage feedback is by-passed and the regulator output will
be limited to this current. Therefore, when the maximum load
current (ILOAD) is determined, simply divide VCL by ILOAD to
obtain the value for RCL.
the regulated output voltage reaches 90% of its final value in
20ms. From:
V
IOUT
(20 x 10-3)
I= C
,C =
= 0.022
VOUT
t
IOUT 0.9VOUT
In addition, where such a capacitor is used, a current-limiting
resistor is also suggested (see “Current-Limit Sensing”).
Producing Output Voltages with Negative Temperature
Coefficients -The ICL7663S has an additional output which
is 0.9V relative to GND and has a tempco of +2.5mV/°C. By
applying this voltage to the inverting input of amplifier A (i.e.,
the VSET pin), output voltages having negative TC may be
produced. The TC of the output voltage is controlled by the
R2/R3 ratio (see Figure 9 and its design equations).
R1
VOUT1
VTC
0.047F
VIN
20
R3
RCL
604k
VSET
R2
10F V
OUT
CL
VSET
GND SHDN
+
V
- TC
+5V
210k
VOUT =
ICL =
R1
VCL
RCL
+
V
- REF
R1
EQ. 1: VOUT = VSET
R2 + R1
VOUT
+
VOUT2
R2
-
V+IN SENSE
EQ. 2:
VSET = 5V
(
TC VOUT =
1+
-
R2 )
R1
R2
R3
+
R2
R3
(VSET - VTC)
(TC VTC) in mV/°C
Where:VSET = 1.3V
VTC = 0.9V
TCVTC = +2.5mV/°C
= 25mA
FIGURE 8. POSITIVE REGULATOR WITH CURRENT LIMIT
Logic-Controllable Shutdown - When equipment is not
needed continuously (e.g., in remote data-acquisition
systems), it is desirable to eliminate its drain on the system
until it is required. This usually means switches, with their
unreliable contacts. Instead, the ICL7663S can be shut
down by a logic signal, leaving only IQ (under 4A) as a
drain on the power source. Since this pin must not be left
open, it should be tied to ground if not needed. A voltage of
less than 0.3V for the ICL7663S will keep the regulator ON,
and a voltage level of more than 1.4V but less than V+IN will
turn the outputs OFF. If there is a possibility that the control
signal could exceed the regulator input (V+IN) the current
from this signal should be limited to 100A maximum by a
high value (1M) series resistor. This situation may occur
when the logic signal originates from a system powered
separately from that of the regulator.
Additional Circuit Precautions - This regulator has poor
rejection of voltage fluctuations from AC sources above
10Hz or so. To prevent the output from responding (where
this might be a problem), a reservoir capacitor across the
load is advised. The value of this capacitor is chosen so that
7
FIGURE 9. GENERATING NEGATIVE TEMPERATURE
COEFFICIENTS
Applications
Boosting Output Current with External Transistor
The maximum available output current from the ICL7663S is
40mA. To obtain output currents greater than 40mA, an
external NPN transistor is used connected as shown in
Figure 10.
V+IN VOUT1
VOUT2
EXTERNAL PIN
POWER
TRANSISTOR
100
0.47
VIN
10F
SENSE
604k
VOUT
VSET
GND SHDN
+5V
210k
FIGURE 10. BOOSTING OUTPUT CURRENT WITH EXTERNAL
TRANSISTOR
FN3180.6
October 2, 2015
ICL7663S
Generating a Temperature Compensated Display Drive Voltage
temperature compensated display voltage, VDISP, can be
generated using the ICL7663S. This is shown in Figure 11
for the ICM7233 triplexed LCD display driver.
Temperature has an important effect in the variation of
threshold voltage in multiplexed LCD displays. As
temperature rises, the threshold voltage goes down. For
applications where the display temperature varies widely, a
+5V
V+IN
VOUT1
LOGIC
SYSTEM,
PROCESSOR,
ETC.
VOUT2
V+
1.8M
ICL7663S
VSET
300k
ICM7233
VTC
GND
2.7M
VDISP
GND
GND
DATA BUS
FIGURE 11. GENERATING A MULTIPLEXED LCD DISPLAY DRIVE VOLTAGE
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to the web to make sure that
you have the latest revision.
DATE
REVISION
October 2, 2015
FN3180.6
CHANGE
Updated Ordering Information Table on page 2.
Added Revision History and About Intersil sections.
About Intersil
Intersil Corporation is a leading provider of innovative power management and precision analog solutions. The company's products
address some of the largest markets within the industrial and infrastructure, mobile computing and high-end consumer markets.
For the most updated datasheet, application notes, related documentation and related parts, please see the respective product
information page found at www.intersil.com.
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Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
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8
FN3180.6
October 2, 2015
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