®
SP782/784
Programmable Charge Pump
s
+5V Only Low Power Voltage Conversion
s
Programmable Between
±5V
or
±10V
s
Low Power Shutdown Mode
Applications
s
RS-232/RS-423 transceiver power supplies
s
LCD BIAS Generator
s
OP-Amp Power Supplies
DESCRIPTION...
The
SP782
and
SP784
are monolithic programmable voltage converters that produce a
positive and negative voltage from a single supply. The
SP782
and
SP784
are programmable
such that the charge pump outputs either a
±10V
voltage or a
±5V
voltage by control of two
pins. Both products require four (4) charge pump capacitors to support the resulting output
voltages. The charge pump architecture (U.S. 5,760,637) is fabricated using a low power
BiCMOS process technology.
The
SP782
and
SP784
charge pumps can be powered from a single +5V supply. The low
power consumption makes these charge pumps ideal for battery operated equipment. Both
offer a shutdown feature that saves battery life. A system can essentially have four (4) different
supply voltages from a single battery. Typical applications are handheld instruments,
notebook and laptop computers, and data acquisition systems.
+5V
10µF
+
+5V
13
14
C1+
C1–
C2+ (b)
C2+ (a)
C2–
D0
D1
LATCH
SD
GND
16
4
V
CC
10µF
10µF
+
10µF
1
1µF
6
14
1µF
1
12
5
1µF
3
C1–
C2+
C2+
C2– GND
16 4
LATCH
C1+
13
15
12
5
V
DD
11
V
CC
SD
V
DD
11
10µF
3
SP784
SP782
V
SS
D0
9
D1
8
2
1µF
9
8
6
15
V
SS
2
10µF
SP782/SP784 DS/08
SP782/784 Programmable Charge Pump
© Copyright 2000 Sipex Corporation
1
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation
of the device at these ratings or any other above those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may
affect reliability.
V
CC
...........................................................................+7V
V
DD
.........................................................................+11V
V
SS
.........................................................................–11V
Storage Temperature..........................-65˚C to +150˚C
Power Dissipation
16-pin Plastic DIP...........................1000mW
16-pin Plastic SOIC.........................1000mW
Package Derating:
16-pin Plastic DIP
ø
JA
....................................................62
°C/W
16-pin Plastic SOIC
ø
JA
....................................................62
°C/W
SP782 SPECIFICATIONS
Typical @ 25°C and V
CC
= V
CC
±
5% unless otherwise noted.
MIN.
SUPPLY CURRENT
I
CC
Shutdown I
CC
POSITIVE CHARGE PUMP OUTPUT
V
DD
(2
x
V
CC
Output)
+9.5
+8.0
V
DD
(V
CC
Output)
+4.2
+4.2
NEGATIVE CHARGE PUMP OUTPUT
V
SS
(2
x
V
CC
Output)
–9.5
–8.0
V
SS
(–V
CC
Output)
–4.2
–4.0
OSCILLATOR FREQUENCY
f
OSC
VOLTAGE CONVERSION EFFICIENCY
V
DD
(2X V
CC
Output)
95
V
DD
(2X V
CC
Output)
80
V
SS
(2X V
CC
Output)
85
V
SS
(2X V
CC
Output)
80
POWER REQUIREMENTS
V
CC
+4.75
ENVIRONMENTAL AND MECHANICAL
Operating Temperature Range
0
Storage Temperature Range
–65
TYP.
3
1
10
+9.8
+8.5
+4.5
+4.5
MAX.
8
2
25
+10.0
UNITS
mA
mA
µA
Volts
Volts
CONDITIONS
V
CC
= +5V, R
L
=
∞
, V
O
= 2
x
V
CC
V
CC
= +5V, R
L
=
∞
, V
O
= V
CC
V
CC
= +5V, SD = V
CC
CHARGE PUMP CAPACITORS: 1µF
CHARGE PUMP CAPACITORS: 1µF
+5.0
Volts
Volts
V
CC
= +5V, D
0
= 0V, D
1
= 0V
R
L
=
∞
V
CC
= +5V, D
0
= 0V, D
1
= 0V
R
L
= 1kΩ
V
CC
= +5V, D
0
= V
CC
, D
1
= V
CC
R
L
=
∞
V
CC
= +5V, D
0
= V
CC
, D
1
= V
CC
R
L
= 1kΩ
CHARGE PUMP CAPACITORS: 1µF
–9.8
–8.5
–4.5
–4.2
–10.0
Volts
Volts
–5.0
Volts
Volts
V
CC
= +5V, D
0
= 0V, D
1
= 0V
R
L
=
∞
V
CC
= +5V, D
0
= 0V, D
1
= 0V
R
L
= 1kΩ
V
CC
= +5V, D
0
= V
CC
, D
1
= V
CC
R
L
=
∞
V
CC
= +5V, D
0
= V
CC
, D
1
= V
CC
R
L
= 1kΩ
SD = 0V
300
kHz
98
85
90
85
+5.25
+70
+150
%
%
%
%
Volts
°C
°C
R
L
=
∞
R
L
= 1kΩ
R
L
=
∞
R
L
= 1kΩ
SP782/SP784 DS/08
SP782/784 Programmable Charge Pump
© Copyright 2000 Sipex Corporation
2
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation
of the device at these ratings or any other above those
indicated in the operation sections of the specifications
below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may
affect reliability.
V
CC
...........................................................................+7V
V
DD
.........................................................................+11V
V
SS
.........................................................................–11V
Storage Temperature..........................-65˚C to +150˚C
Power Dissipation
16-pin Plastic DIP...........................1000mW
16-pin Plastic SOIC.........................1000mW
Package Derating:
16-pin Plastic DIP
ø
JA
....................................................62
°C/W
16-pin Plastic SOIC
ø
JA
....................................................62
°C/W
SP784 SPECIFICATIONS
Typical @ 25°C and V
CC
= V
CC
±
5% unless otherwise noted.
MIN.
SUPPLY CURRENT
I
CC
Shutdown I
CC
POSITIVE CHARGE PUMP OUTPUT
V
DD
(2
x
V
CC
Output)
+9.0
+8.0
V
DD
(V
CC
Output)
+4.5
+4.2
NEGATIVE CHARGE PUMP OUTPUT
V
SS
(2
x
V
CC
Output)
–9.0
–8.0
V
SS
(–V
CC
Output)
–4.2
–4.0
OSCILLATOR FREQUENCY
f
OSC
VOLTAGE CONVERSION EFFICIENCY
V
DD
(2X V
CC
Output)
90
V
DD
(2X V
CC
Output)
80
V
SS
(2X V
CC
Output)
90
V
SS
(2X V
CC
Output)
80
POWER REQUIREMENTS
V
CC
+4.75
ENVIRONMENTAL AND MECHANICAL
Operating Temperature Range
0
Storage Temperature Range
–65
TYP.
5
1
10
+9.8
+9.5
+4.8
+4.5
MAX.
10
5
25
+10.0
UNITS
mA
mA
µA
Volts
Volts
CONDITIONS
V
CC
= +5V, R
L
=
∞
, V
O
= 2
x
V
CC
V
CC
= +5V, R
L
=
∞
, V
O
= V
CC
V
CC
= +5V, SD = V
CC
CHARGE PUMP CAPACITORS: 10µF
CHARGE PUMP CAPACITORS: 10µF
+5.0
Volts
Volts
V
CC
= +5V, D
0
= 0V, D
1
= 0V
R
L
=
∞
V
CC
= +5V, D
0
= 0V, D
1
= 0V
R
L
= 1kΩ
V
CC
= +5V, D
0
= V
CC
, D
1
= V
CC
R
L
=
∞
V
CC
= +5V, D
0
= V
CC
, D
1
= V
CC
R
L
= 1kΩ
CHARGE PUMP CAPACITORS: 10µF
–9.8
–9.5
–4.5
–4.2
–10.0
Volts
Volts
–5.0
Volts
Volts
V
CC
= +5V, D
0
= 0V, D
1
= 0V
R
L
=
∞
V
CC
= +5V, D
0
= 0V, D
1
= 0V
R
L
= 1kΩ
V
CC
= +5V, D
0
= V
CC
, D
1
= V
CC
R
L
=
∞
V
CC
= +5V, D
0
= V
CC
, D
1
= V
CC
R
L
= 1kΩ
SD = 0V
300
kHz
98
95
98
95
+5.25
+70
+150
%
%
%
%
Volts
°C
°C
R
L
=
∞
R
L
= 1kΩ
R
L
=
∞
R
L
= 1kΩ
SP782/SP784 DS/08
SP782/784 Programmable Charge Pump
© Copyright 2000 Sipex Corporation
3
AC CHARACTERISTICS*
(Typical @ 25°C and nominal supply voltages unless otherwise noted)
PARAMETER
MIN.
SP782 POWER-UP DELAY TIME
±10V
OUTPUT
t
DVDD
; V
DD
Power On Delay
t
DVSS
; V
SS
Power-On Delay
±5V
OUTPUT
t
DVDD
; V
DD
Power On Delay
t
DVSS
; V
SS
Power-On Delay
SP782 OUTPUT DELAY TIME
t
SD1
; Switching Delay
from
±10V
to
±5V
t
SD2
; Switching Delay
from
±5V
to
±10V
SP784 POWER-UP DELAY TIME
±10V
OUTPUT
t
DVDD
; V
DD
Power On Delay
t
DVSS
; V
SS
Power-On Delay
±5V
OUTPUT
t
DVDD
; V
DD
Power On Delay
t
DVSS
; V
SS
Power-On Delay
SP784 OUTPUT DELAY TIME
t
SD1
; Switching Delay
from
±10V
to
±5V
t
SD2
; Switching Delay
from
±5V
to
±10V
TYP.
MAX.
UNITS
CONDITIONS
1000
1000
µs
µs
µs
µs
R
L
= 1kΩ
R
L
= 1kΩ
10
150
R
L
= 1kΩ
R
L
= 1kΩ
1000
500
µs
µs
R
L
= 1kΩ
R
L
= 1kΩ
5
5
ms
ms
R
L
= 1kΩ
R
L
= 1kΩ
10
1000
µs
µs
R
L
= 1kΩ
R
L
= 1kΩ
10
2
ms
ms
R
L
= 1kΩ
R
L
= 1kΩ
* - Using the charge pump capacitor values specified in the previous pages for each device.
+10V
C
2+
GND
GND
C
2–
–10V
(b)
(a)
+5V
C
2+
GND
GND
C
2–
–5V
Figure 1. Charge Pump Waveforms
SP782/SP784 DS/08
SP782/784 Programmable Charge Pump
© Copyright 2000 Sipex Corporation
4
40.00
35.00
30.00
25.00
20.00
15.00
10.00
5.00
0.00
5.00
SP782 VDD vs IDD
D0 = D1 = 0V
VCC = 5.00V T = +25 C
O
IDD(milliamps)
10uF Curve
1uF Curve
0.1uF Curve
5.50
6.00
6.50
7.00 7.50
VDD(volts)
8.00
8.50
9.00
9.50 10.00
SP782 VSS vs ISS
0.00
-5.00
-10.00
-15.00
-20.00
-25.00
-30.00
-35.00
-40.00
-10.00
D0 = D1 = 0V
VCC = 5.00V T = +25 C
O
ISS(milliamps)
10uF Curve
1uF Curve
0.1uF Curve
-9.50
-9.00
-8.50 -8.00
-7.50 -7.00
-6.50 -6.00
-5.50
-5.00
VSS(volts)
SP782 LOAD vs VDD
10.00
9.00
8.00
7.00
6.00
5.00
4.00
0
500
1000
1500
VDD (volts)
D0 = D1 = 0V
VCC = 5.00V T = +25 C
O
VDD - 10uF
VDD - 1uF
VDD - 0.1uF
2000
2500
3000
3500 4000
4500
5000
LOAD (ohms)
SP782 LOAD vs VSS
-4.00
-5.00
-6.00
-7.00
-8.00
-9.00
-10.00
0
500
1000
1500
VSS (volts)
D0 = D1 = 0V
VCC = 5.00V T = +25 C
O
VSS - 10uF
VSS - 1uF
VSS - 0.1uF
2000
2500
3000
3500 4000
4500
5000
LOAD(ohms)
SP782/SP784 DS/08
SP782/784 Programmable Charge Pump
© Copyright 2000 Sipex Corporation
5
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