MICROCHIP TC7660SEPA

EVALUATION
KIT
AVAILABLE
TC7660S
SUPER CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER
FEATURES
GENERAL DESCRIPTION
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The TC7660S is a pin-compatible upgrade to the Industry standard TC7660 charge pump voltage converter. It
converts a +1.5V to +12V input to a corresponding -1.5V to
-12V output using only two low-cost capacitors, eliminating
inductors and their associated cost, size and EMI. Added
features include an extended supply range to 12V, and a
frequency boost pin for higher operating frequency, allowing
the use of smaller external capacitors.
The on-board oscillator operates at a nominal frequency
of 10kHz. Frequency is increased to 45kHz when pin 1 is
connected to V+. Operation below 10kHz (for lower supply
current applications) is possible by connecting an external
capacitor from OSC to ground (with pin 1 open).
The TC7660S is available in both 8-pin DIP and 8-pin
small outline (SOIC) packages in commercial and extended
temperature ranges.
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Oscillator boost from 10kHz to 45kHz
Converts +5V Logic Supply to ±5V System
Wide Input Voltage Range .................... 1.5V to 12V
Efficient Voltage Conversion ......................... 99.9%
Excellent Power Efficiency ............................... 98%
Low Power Supply .............................. 80µA @ 5 VIN
Low Cost and Easy to Use
— Only Two External Capacitors Required
Available in Small Outline (SOIC) Package
Improved ESD Protection ..................... Up to 10kV
No External Diode Required for High Voltage
Operation
ORDERING INFORMATION
Part No.
Package
TC7660SCOA
8-Pin SOIC
Temperature
Range
0°C to +70°C
PIN CONFIGURATION (DIP AND SOIC)
TC7660SCPA
8-Pin Plastic DIP
TC7660SEJA
8-Pin CerDIP
– 40°C to +85°C
0°C to +70°C
Boost 1
TC7660SEOA
8-Pin SOIC
– 40°C to +85°C
CAP + 2
TC7660SEPA
8-Pin Plastic DIP
– 40°C to +85°C
TC7660SMJA
8-Pin CerDIP
GND 3 TC7660SCPA 6 LOW
VOLTAGE (LV)
TC7660SEJA
CAP – 4 TC7660SEPA 5 VOUT
TC7660EV
Evaluation Kit for
Charge Pump Family
– 55°C to +125°C
8 V+
Boost
1
7 OSC
CAP +
2
GND
3
CAP –
4
8 V+
7 OSC
LOW
TC7660SCOA 6 VOLTAGE (LV)
TC7660SEOA
5 VOUT
FUNCTIONAL BLOCK DIAGRAM
V + CAP +
8
BOOST
OSC
LV
2
1
7
RC
OSCILLATOR
÷2
VOLTAGE–
LEVEL
TRANSLATOR
4
CAP –
6
5
VOUT
INTERNAL
VOLTAGE
REGULATOR
LOGIC
NETWORK
TC7660S
3
GND
© 2001 Microchip Technology Inc.
DS21467A
TC7660S-14 9/16/96
SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
TC7660S
ABSOLUTE MAXIMUM RATINGS*
Operating Temperature Range
C Suffix .................................................. 0°C to +70°C
E Suffix ............................................. – 40°C to +85°C
M Suffix ........................................... – 55°C to +125°C
Storage Temperature Range ................ – 65°C to +150°C
Lead Temperature (Soldering, 10 sec) ................. +300°C
Supply Voltage ......................................................... +13V
LV, Boost, OSC Inputs
Voltage (Note 1) ......................... – 0.3V to (V+ +0.3V)
for V+ < 5.5V
+
(V – 5.5V) to (V+ +0.3V)
for V+ > 5.5V
Current Into LV (Note 1) ...................... 20µA for V+ > 3.5V
Output Short Duration (VSUPPLY ≤ 5.5V) ......... Continuous
Power Dissipation (TA ≤ 70°C) (Note 2)
CerDIP ............................................................800mW
Plastic DIP ......................................................730mW
SOIC ...............................................................470mW
*Static-sensitive device. Unused devices must be stored in conductive
material. Protect devices from static discharge and static fields. Stresses
above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and functional
operation of the device at these or any other conditions above those
indicated in the operation sections of the specifications is not implied.
Exposure to absolute maximum rating conditions for extended periods may
affect device reliability.
ELECTRICAL CHARACTERISTICS: TA = +25°C, V+ = 5V, COSC = 0, Test Circuit (Figure 1), unless otherwise
indicated.
Symbol
I
+
Parameter
Supply Current
(Boost pin OPEN or GND)
I+
Supply Current
(Boost pin = V+)
V+H
Supply Voltage Range, High
V+L
Supply Voltage Range, Low
ROUT
Output Source Resistance
FOSC
Oscillator Frequency
PEFF
Power Efficiency
VOUT EFF
ZOSC
Voltage Conversion Efficiency
Oscillator Impedance
Test Conditions
RL = ∞
0°C ≤ TA ≤ +70°C
– 40°C ≤ TA ≤ +85°C
– 55°C ≤ TA ≤ +125°C
0°C ≤ TA ≤ +70°C
– 40°C ≤ TA ≤ +85°C
– 55°C ≤ TA ≤ +125°C
Min ≤ TA ≤ Max,
RL = 10kΩ, LV Open
Min ≤ TA ≤ Max,
RL = 10kΩ, LV to GND
IOUT = 20mA
IOUT = 20mA, 0°C ≤ TA ≤ +70°C
IOUT = 20mA, – 40°C ≤ TA ≤ +85°C
IOUT = 20mA, – 55°C ≤ TA ≤ +125°C
V+ = 2V, IOUT = 3mA, LV to GND
0°C ≤ TA ≤ +70°C
– 55°C ≤ TA ≤ +125°C
Pin 7 open; Pin 1 open or GND
Boost Pin = V+
RL = 5 kΩ; Boost Pin Open
TMIN ≤ TA ≤ TMAX; Boost Pin Open
Boost Pin = V+
RL = ∞
V+ = 2V
V+ = 5V
Min
Typ
Max
Unit
—
—
—
—
—
—
—
3
80
—
—
—
—
—
—
—
160
180
180
200
300
350
400
12
µA
1.5
—
3.5
V
—
—
—
—
60
70
70
105
100
120
120
150
Ω
—
—
—
—
96
95
—
99
—
—
—
—
10
45
98
98
88
99.9
1
100
250
400
—
—
—
—
—
—
—
—
Ω
µA
V
kHz
%
%
MΩ
kΩ
NOTES: 1. Connecting any input terminal to voltages greater than V+ or less than GND may cause destructive latch-up. It is recommended that no
inputs from sources operating from external supplies be applied prior to "power up" of the TC7660S.
2. Derate linearly above 50°C by 5.5mW/°C.
TC7660S-14 9/16/96
2
© 2001 Microchip Technology Inc.
DS21467A
SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
TC7660S
Detailed Description
S1
V+
The TC7660S contains all the necessary circuitry to
implement a voltage inverter, with the exception of two
external capacitors, which may be inexpensive 10 µF polarized electrolytic capacitors. Operation is best understood by
considering Figure 2, which shows an idealized voltage
inverter. Capacitor C1 is charged to a voltage V+ for the half
cycle when switches S1 and S3 are closed. (Note: Switches
S2 and S4 are open during this half cycle.) During the second
half cycle of operation, switches S2 and S4 are closed, with
S1 and S3 open, thereby shifting capacitor C1 negatively by
V+ volts. Charge is then transferred from C1 negatively by V+
volts. Charge is then transferred from C1 to C2, such that the
voltage on C2 is exactly V+, assuming ideal switches and no
load on C2.
The four switches in Figure 2 are MOS power switches;
S1 is a P-channel device, and S2, S3 and S4 are N-channel
devices. The main difficulty with this approach is that in
integrating the switches, the substrates of S3 and S4 must
always remain reverse-biased with respect to their sources,
but not so much as to degrade their ON resistances. In
addition, at circuit start-up, and under output short circuit
conditions (VOUT = V+), the output voltage must be sensed
and the substrate bias adjusted accordingly. Failure to
accomplish this will result in high power losses and probable
device latch-up.
This problem is eliminated in the TC7660S by a logic
network which senses the output voltage (VOUT) together
with the level translators, and switches the substrates of S3
and S4 to the correct level to maintain necessary reverse
bias.
S2
C1
GND
S3
S4
C2
VOUT = – VIN
Figure 2. Idealized Charge Pump Inverter
The voltage regulator portion of the TC7660S is an
integral part of the anti-latch-up circuitry. Its inherent voltage
drop can, however, degrade operation at low voltages. To
improve low-voltage operation, the “LV” pin should be
connected to GND, disabling the regulator. For supply
voltages greater than 3.5V, the LV terminal must be left
open to ensure latch-up-proof operation and prevent device
damage.
Theoretical Power Efficiency
Considerations
In theory, a capacitive charge pump can approach
100% efficiency if certain conditions are met:
(1) The drive circuitry consumes minimal power.
(2) The output switches have extremely low ON
resistance and virtually no offset.
V+
C1
10µF
+
(3) The impedances of the pump and reservoir
capacitors are negligible at the pump frequency.
IS
1
8
2
7
3
TC7660S
4
6
COSC*
5
IL
V+
(+5V)
The TC7660S approaches these conditions for negative voltage multiplication if large values of C1 and C2 are
used. Energy is lost only in the transfer of charge
between capacitors if a change in voltage occurs. The
energy lost is defined by:
RL
E = 1/2 C1 (V12 – V22)
VO
+
V1 and V2 are the voltages on C1 during the pump and
transfer cycles. If the impedances of C1 and C2 are relatively
high at the pump frequency (refer to Figure 2) compared to
the value of RL, there will be a substantial difference in
voltages V1 and V2. Therefore, it is desirable not only to
make C2 as large as possible to eliminate output voltage
ripple, but also to employ a correspondingly large value for
C1 in order to achieve maximum efficiency of operation.
C2
10µF
NOTE: For large values of COSC (>1000pF), the values
of C1 and C2 should be increased to 100 F.
Figure 1. TC7660S Test Circuit
© 2001 Microchip Technology Inc.
DS21467A
3
TC7660S-14 9/16/96
SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
TC7660S
Dos and Don'ts
The output characteristics of the circuit in Figure 3 are
those of a nearly ideal voltage source in series with 70Ω.
Thus, for a load current of –10mA and a supply voltage of
+5V, the output voltage would be – 4.3V.
The dynamic output impedance of the TC7660S is due,
primarily, to capacitive reactance of the charge transfer
capacitor (C1). Since this capacitor is connected to the
output for only 1/2 of the cycle, the equation is:
2
XC =
= 3.18Ω,
2πf C1
• Do not exceed maximum supply voltages.
• Do not connect the LV terminal to GND for supply
voltages greater than 3.5V.
• Do not short circuit the output to V+ supply for voltages
above 5.5V for extended periods; however, transient
conditions including start-up are okay.
• When using polarized capacitors in the inverting mode,
the + terminal of C1 must be connected to pin 2 of the
TC7660S and the + terminal of C2 must be connected
to GND.
where f = 10kHz and C1 = 10µF.
Paralleling Devices
Simple Negative Voltage Converter
Any number of TC7660S voltage converters may be
paralleled to reduce output resistance (Figure 4). The reservoir capacitor, C2, serves all devices, while each device
requires its own pump capacitor, C1. The resultant output
resistance would be approximately:
Figure 3 shows typical connections to provide a negative supply where a positive supply is available. A similar
scheme may be employed for supply voltages anywhere in
the operating range of +1.5V to +12V, keeping in mind that
pin 6 (LV) is tied to the supply negative (GND) only for supply
voltages below 3.5V.
ROUT =
V+
C1
10µF
+
1
8
2
7
TC7660S
3
6
+
ROUT (of TC7660S)
n (number of devices)
VOUT*
C2
10µF
5
4
* NOTES:
Figure 3. Simple Negative Converter
V+
1
8
2
C1
3
4
TC7660S
"1"
7
1
8
6
2
7
5
C1
3
4
TC7660S
"n"
RL
6
5
+
C2
Figure 4. Paralleling Devices Lowers Output Impedance
TC7660S-14 9/16/96
4
© 2001 Microchip Technology Inc.
DS21467A
SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
TC7660S
+
V
1
8
2
7
+
3
10µF
TC7660S
4
"1"
1
6
8
2
5
+
10µF
7
3
TC7660S
6
4
"n"
5
VOUT*
+
* NOTES:
1. VOUT = –n(V+) for 1.5V ≤ V+ ≤ 12V
+
10µF
10µF
Figure 5. Increased Output Voltage by Cascading Devices
Cascading Devices
situation where the designer has generated the external
clock frequency using TTL logic, the addition of a 10kΩ pullup resistor to V+ supply is required. Note that the pump
frequency with external clocking, as with internal clocking,
will be ¹⁄₂ of the clock frequency. Output transitions occur on
the positive-going edge of the clock.
It is also possible to increase the conversion efficiency
of the TC7660S at low load levels by lowering the oscillator
frequency. This reduces the switching losses, and is achieved
by connecting an additional capacitor, COSC, as shown in
Figure 7. Lowering the oscillator frequency will cause an
undesirable increase in the impedance of the pump (C1) and
the reservoir (C2) capacitors. To overcome this, increase the
values of C1 and C2 by the same factor that the frequency
has been reduced. For example, the addition of a 100pF
capacitor between pin 7 (OSC) and pin 8 (V+) will lower the
oscillator frequency to 1kHz from its nominal frequency of
10kHz (a multiple of 10), and necessitate a corresponding
increase in the values of C1 and C2 (from 10µF to 100µF).
The TC7660S may be cascaded as shown (Figure 5) to
produce larger negative multiplication of the initial supply
voltage. However, due to the finite efficiency of each device,
the practical limit is 10 devices for light loads. The output
voltage is defined by:
VOUT = – n (VIN)
where n is an integer representing the number of devices
cascaded. The resulting output resistance would be approximately the weighted sum of the individual TC7660S
ROUT values.
Changing the TC7660S Oscillator Frequency
It may be desirable in some applications (due to noise or
other considerations) to increase the oscillator frequency.
Pin 1, frequency boost pin may be connected to V+ to
increase oscillator frequency to 45kHz from a nominal of
10kHz for an input supply voltage of 5.0 volts. The oscillator
may also be synchronized to an external clock as shown in
Figure 6. In order to prevent possible device latch-up, a 1kΩ
resistor must be used in series with the clock output. In a
8
2
7
1 kΩ
+
10µF
3
TC7660S
CMOS
GATE
6
5
4
The TC7660S may be employed to achieve positive
voltage multiplication using the circuit shown in Figure 8. In
this application, the pump inverter switches of the TC7660S
are used to charge C1 to a voltage level of V+–VF (where V+
is the supply voltage and VF is the forward voltage drop of
diode D1). On the transfer cycle, the voltage on C1 plus the
supply voltage (V+) is applied through diode D2 to capacitor
C2. The voltage thus created on C2 becomes (2V+) – (2VF),
or twice the supply voltage minus the combined forward
voltage drops of diodes D1 and D2.
The source impedance of the output (VOUT) will depend
on the output current, but for V+ = 5V and an output current
of 10mA, it will be approximately 60Ω.
V+
V+
1
Positive Voltage Multiplication
VOUT
+
10µF
Figure 6. External Clocking
© 2001 Microchip Technology Inc.
DS21467A
5
TC7660S-14 9/16/96
SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
TC7660S
V
C1
+
1
8
2
7
3
TC7660S
4
will bypass the other (D1 and D2 in Figure 9 would never turn
on), or else the diode and resistor shown dotted in Figure 10
can be used to "force" the internal regulator on.
+
COSC
Voltage Splitting
6
5
The same bidirectional characteristics used in Figure 10
can also be used to split a higher supply in half, as shown in
Figure 11. The combined load will be evenly shared between
the two sides. Once again, a high value resistor to the LV pin
ensures start-up. Because the switches share the load in
parallel, the output impedance is much lower than in the
standard circuits, and higher currents can be drawn from the
device. By using this circuit, and then the circuit of Figure 5,
+15V can be converted (via +7.5V and – 7.5V) to a nominal
–15V, though with rather high series resistance (~250Ω).
VOUT
C2
+
Figure 7. Lowering Oscillator Frequency
Combined Negative Voltage Conversion
and Positive Supply Multiplication
Figure 9 combines the functions shown in Figures 3 and
8 to provide negative voltage conversion and positive voltage multiplication simultaneously. This approach would be,
for example, suitable for generating +9V and – 5V from an
existing +5V supply. In this instance, capacitors C1 and C3
perform the pump and reservoir functions, respectively, for
the generation of the negative voltage, while capacitors C2
and C4 are pump and reservoir, respectively, for the multiplied positive voltage. There is a penalty in this configuration
which combines both functions, however, in that the source
impedances of the generated supplies will be somewhat
higher due to the finite impedance of the common charge
pump driver at pin 2 of the device.
V+
VOUT = –V+
+
C1
7
3
4
TC7660S
5
TC7660S
4
6
D1
5
+
D2
+
C3
VOUT =
(2 V +) – (2 VF)
+
C4
Negative Voltage Generation for
Display ADCs
The TC7106 is designed to work from a 9V battery. With
a fixed power supply system, the TC7106 will perform
conversions with input signal referenced to power supply
ground.
Negative Supply Generation for
4¹⁄₂ Digit Data Acquisition System
D1
+
The TC7135 is a 4¹⁄₂ digit ADC operating from ±5V
supplies. The TC7660S provides an inexpensive –5V source.
(See AN16 and AN17 for TC7135 interface details and
software routines.)
VOUT =
(2 V+) – (2 VF)
D2
6
7
Figure 9. Combined Negative Converter and Positive Multiplier
V+
2
2
C2
Since the switches that allow the charge pumping operation are bidirectional, the charge transfer can be performed backwards as easily as forwards. Figure 10 shows
a TC7660S transforming – 5V to +5V (or +5V to +10V, etc.).
The only problem here is that the internal clock and switchdrive section will not operate until some positive voltage has
been generated. An initial inefficient pump, as shown in
Figure 9, could be used to start this circuit up, after which it
8
8
3
Efficient Positive Voltage
Multiplication/Conversion
1
1
+
C1
C2
Figure 8. Positive Voltage Multiplier
TC7660S-14 9/16/96
6
© 2001 Microchip Technology Inc.
DS21467A
SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
TC7660S
V
VOUT = –V–
+
50µF
R
L1
C1
10µF
+
1
8
2
7
+
V
=
OUT
+
–
V –V
2
10µF
1 MΩ
3
TC7660S
6
50µF
1
8
2
7
100 kΩ
+
1 MΩ
3
–
TC7660S
6
4
R
4
+
5
L2
5
V– INPUT
+
50µF
–
V
Figure 10. Positive Voltage Multiplier
–
Figure 11. Splitting a Supply in Half
TYPICAL CHARACTERISTICS
Unloaded Osc Freq vs. Temperature
Unloaded Osc Freq vs. Temperature
with Boost Pin = VIN
60
OSCILLATOR FREQUENCY (kHz)
OSCILLATOR FREQUENCY (kHz)
12
10
8
VIN = 5V
6
4
VIN = 12V
2
0
-40
-20
0
20
40
60
80
50
40
VIN = 5V
30
VIN = 12V
20
10
0
-40
100
-20
TEMPERATURE (°C)
VOLTAGE CONVERSION EFFICIENCY (%)
1000
800
VIN = 12V
IDD (µA)
600
400
200
VIN = 5V
-20
0
20
40
60
80
100
TEMPERATURE (°C)
© 2001 Microchip Technology Inc.
DS21467A
20
40
60
80
100
Voltage Conversion
Supply Current vs. Temperature
(with Boost Pin = VIN)
0
-40
0
TEMPERATURE (°C)
101.0
100.5
Without Load
100.0
99.5
10K Load
99.0
98.5
TA = 25°C
98.0
1
2
3
4
5
6
7
8
9
10 11 12
INPUT VOLTAGE VIN (V)
7
TC7660S-14 9/16/96
SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
TC7660S
TYPICAL CHARACTERISTICS (Cont.)
Output Source Resistance vs. Supply Voltage
Output Source Resistance vs. Temperature
100
OUTPUT SOURCE RESISTANCE (Ω)
OUTPUT SOURCE RESISTANCE (Ω)
100
70
50
30
IOUT = 20mA
TA = 25°C
10
1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12
VIN = 2.5V
80
60
VIN = 5.5V
40
20
0
-40
-20
0
20
40
80
100
Power Conversion Efficiency vs. Load
Output Voltage vs. Output Current
100
0
90
-2
POWER EFFICIENCY (%)
-4
-6
-8
-10
Boost Pin = Open
80
Boost Pin = V+
70
60
50
40
30
20
10
-12
0
0
10
20
30
40
50
60
70
80
90 100
OUTPUT CURRENT (mA)
1.0
1.5
2.0
3.0
4.5
6.0
7.5
9.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
50.0
55.0
60.0
OUTPUT VOLTAGE VOUT (V)
60
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
LOAD CURRENT (mA)
Supply Current vs. Temperature
200
200
175
175
SUPPLY CURRENT IDD (µA)
SUPPLY CURRENT IDD (µA)
Supply Current vs. Temperature
150
125
VIN = 12.5V
100
75
50
VIN = 5.5V
25
0
-40
-20
0
20
40
60
80
125
VIN = 12.5V
100
75
50
VIN = 5.5V
25
0
-40
100
-20
0
20
40
60
80
100
TEMPERATURE (°C)
TEMPERATURE (°C)
TC7660S-14 9/16/96
150
8
© 2001 Microchip Technology Inc.
DS21467A
SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
TC7660S
TYPICAL CHARACTERISTICS (Cont.)
Supply Current vs. Temperature
200
SUPPLY CURRENT IDD (µA)
175
150
125
VIN = 12.5V
100
75
50
VIN = 5.5V
25
0
-40
-20
0
20
40
60
80
100
TEMPERATURE (°C)
PACKAGE DIMENSIONS
8-Pin Plastic DIP
PIN 1
.260 (6.60)
.240 (6.10)
.045 (1.14)
.030 (0.76)
.070 (1.78)
.040 (1.02)
.310 (7.87)
.290 (7.37)
.400 (10.16)
.348 (8.84)
.200 (5.08)
.140 (3.56)
.040 (1.02)
.020 (0.51)
.150 (3.81)
.115 (2.92)
.110 (2.79)
.090 (2.29)
.015 (0.38)
.008 (0.20)
3° MIN.
.400 (10.16)
.310 (7.87)
.022 (0.56)
.015 (0.38)
Dimensions: inches (mm)
© 2001 Microchip Technology Inc.
DS21467A
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TC7660S-14 9/16/96
SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
TC7660S
PACKAGE DIMENSIONS (CONT.)
8-Pin CerDIP
.110 (2.79)
.090 (2.29)
PIN 1
.300 (7.62)
.230 (5.84)
.020 (0.51) MIN.
.055 (1.40) MAX.
.320 (8.13)
.290 (7.37)
.400 (10.16)
.370 (9.40)
.040 (1.02)
.020 (0.51)
.200 (5.08)
.160 (4.06)
.150 (3.81)
MIN.
.200 (5.08)
.125 (3.18)
.015 (0.38)
.008 (0.20)
3° MIN.
.400 (10.16)
.320 (8.13)
.065 (1.65) .020 (0.51)
.045 (1.14) .016 (0.41)
8-Pin Plastic SOIC
.157 (3.99)
.150 (3.81)
.244 (6.20)
.228 (5.79)
.050 (1.27) TYP.
.197 (5.00)
.189 (4.80)
.069 (1.75)
.053 (1.35)
.010 (0.25)
.007 (0.18)
8° MAX.
.020 (0.51) .010 (0.25)
.013 (0.33) .004 (0.10)
.050 (1.27)
.016 (0.40)
Dimensions: inches (mm)
TC7660S-14 9/16/96
10
© 2001 Microchip Technology Inc.
DS21467A
SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
TC7660S
WORLDWIDE SALES AND SERVICE
AMERICAS
New York
Corporate Office
150 Motor Parkway, Suite 202
Hauppauge, NY 11788
Tel: 631-273-5305 Fax: 631-273-5335
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7200 Fax: 480-792-7277
Technical Support: 480-792-7627
Web Address: http://www.microchip.com
Rocky Mountain
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7966 Fax: 480-792-7456
ASIA/PACIFIC (continued)
San Jose
Microchip Technology Inc.
2107 North First Street, Suite 590
San Jose, CA 95131
Tel: 408-436-7950 Fax: 408-436-7955
Singapore
Microchip Technology Singapore Pte Ltd.
200 Middle Road
#07-02 Prime Centre
Singapore, 188980
Tel: 65-334-8870 Fax: 65-334-8850
Taiwan
Atlanta
6285 Northam Drive, Suite 108
Mississauga, Ontario L4V 1X5, Canada
Tel: 905-673-0699 Fax: 905-673-6509
500 Sugar Mill Road, Suite 200B
Atlanta, GA 30350
Tel: 770-640-0034 Fax: 770-640-0307
Microchip Technology Taiwan
11F-3, No. 207
Tung Hua North Road
Taipei, 105, Taiwan
Tel: 886-2-2717-7175 Fax: 886-2-2545-0139
ASIA/PACIFIC
Austin
EUROPE
China - Beijing
Australia
Analog Product Sales
8303 MoPac Expressway North
Suite A-201
Austin, TX 78759
Tel: 512-345-2030 Fax: 512-345-6085
Boston
2 Lan Drive, Suite 120
Westford, MA 01886
Tel: 978-692-3848 Fax: 978-692-3821
Boston
Analog Product Sales
Unit A-8-1 Millbrook Tarry Condominium
97 Lowell Road
Concord, MA 01742
Tel: 978-371-6400 Fax: 978-371-0050
Toronto
Microchip Technology Beijing Office
Unit 915
New China Hong Kong Manhattan Bldg.
No. 6 Chaoyangmen Beidajie
Beijing, 100027, No. China
Tel: 86-10-85282100 Fax: 86-10-85282104
China - Shanghai
Microchip Technology Shanghai Office
Room 701, Bldg. B
Far East International Plaza
No. 317 Xian Xia Road
Shanghai, 200051
Tel: 86-21-6275-5700 Fax: 86-21-6275-5060
Hong Kong
333 Pierce Road, Suite 180
Itasca, IL 60143
Tel: 630-285-0071 Fax: 630-285-0075
Microchip Asia Pacific
RM 2101, Tower 2, Metroplaza
223 Hing Fong Road
Kwai Fong, N.T., Hong Kong
Tel: 852-2401-1200 Fax: 852-2401-3431
Dallas
India
4570 Westgrove Drive, Suite 160
Addison, TX 75001
Tel: 972-818-7423 Fax: 972-818-2924
Two Prestige Place, Suite 130
Miamisburg, OH 45342
Tel: 937-291-1654 Fax: 937-291-9175
Microchip Technology Inc.
India Liaison Office
Divyasree Chambers
1 Floor, Wing A (A3/A4)
No. 11, OíShaugnessey Road
Bangalore, 560 025, India
Tel: 91-80-2290061 Fax: 91-80-2290062
Detroit
Japan
Chicago
Dayton
Tri-Atria Office Building
32255 Northwestern Highway, Suite 190
Farmington Hills, MI 48334
Tel: 248-538-2250 Fax: 248-538-2260
Los Angeles
18201 Von Karman, Suite 1090
Irvine, CA 92612
Tel: 949-263-1888 Fax: 949-263-1338
Mountain View
Analog Product Sales
1300 Terra Bella Avenue
Mountain View, CA 94043-1836
Tel: 650-968-9241 Fax: 650-967-1590
Microchip Technology Intl. Inc.
Benex S-1 6F
3-18-20, Shinyokohama
Kohoku-Ku, Yokohama-shi
Kanagawa, 222-0033, Japan
Tel: 81-45-471- 6166 Fax: 81-45-471-6122
Korea
Microchip Technology Korea
168-1, Youngbo Bldg. 3 Floor
Samsung-Dong, Kangnam-Ku
Seoul, Korea
Tel: 82-2-554-7200 Fax: 82-2-558-5934
All rights reserved. © 2001 Microchip Technology Incorporated. Printed in the USA. 1/01
Microchip Technology Australia Pty Ltd
Suite 22, 41 Rawson Street
Epping 2121, NSW
Australia
Tel: 61-2-9868-6733 Fax: 61-2-9868-6755
Denmark
Microchip Technology Denmark ApS
Regus Business Centre
Lautrup hoj 1-3
Ballerup DK-2750 Denmark
Tel: 45 4420 9895 Fax: 45 4420 9910
France
Arizona Microchip Technology SARL
Parc díActivite du Moulin de Massy
43 Rue du Saule Trapu
Batiment A - ler Etage
91300 Massy, France
Tel: 33-1-69-53-63-20 Fax: 33-1-69-30-90-79
Germany
Arizona Microchip Technology GmbH
Gustav-Heinemann Ring 125
D-81739 Munich, Germany
Tel: 49-89-627-144 0 Fax: 49-89-627-144-44
Germany
Analog Product Sales
Lochhamer Strasse 13
D-82152 Martinsried, Germany
Tel: 49-89-895650-0 Fax: 49-89-895650-22
Italy
Arizona Microchip Technology SRL
Centro Direzionale Colleoni
Palazzo Taurus 1 V. Le Colleoni 1
20041 Agrate Brianza
Milan, Italy
Tel: 39-039-65791-1 Fax: 39-039-6899883
United Kingdom
Arizona Microchip Technology Ltd.
505 Eskdale Road
Winnersh Triangle
Wokingham
Berkshire, England RG41 5TU
Tel: 44 118 921 5869 Fax: 44-118 921-5820
Printed on recycled paper.
01/09/01
Information contained in this publication regarding device applications and the like is intended through suggestion only and may be superseded by
updates. It is your responsibility to ensure that your application meets with your specifications. No representation or warranty is given and no liability is
assumed by Microchip Technology Incorporated with respect to the accuracy or use of such information, or infringement of patents or other intellectual
property rights arising from such use or otherwise. Use of Microchipís products as critical components in life support systems is not authorized except with
express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, except as maybe explicitly expressed herein, under any intellectual property rights. The Microchip logo and name are registered trademarks of Microchip Technology Inc. in the U.S.A. and other countries. All rights
reserved. All other trademarks mentioned herein are the property of their respective companies.
© 2001 Microchip Technology Inc.
DS21467A
11
TC7660S-14 9/16/96