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PDF SP6832 Data sheet ( Hoja de datos )
| Número de pieza | SP6832 | |
| Descripción | High Speed / High Efficiency Voltage Inverter | |
| Fabricantes | Sipex | |
| Logotipo |  |
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® SP6832
High Speed, High Efficiency Voltage Inverter
s 99.9% Voltage Conversion Efficiency
s +1.15V to +5.3V Input Voltage Range
s +1.15 VIN Guaranteed Start-up
s Inverts Input Supply Voltage
s 700µA Quiescent Current
s 25mA Output Current
s 500kHz Operating Frequency
s Ideal for +3.6V Lithium Ion Battery
Applications
s Reverse Battery Protection
s 5-pin SOT23 Package
s 19Ω Output Resistance
s 0.1 or 0.33 µF Capacitors
DESCRIPTION
The SP6832 device is a CMOS Charge Pump Voltage Inverter that can be implemented
in designs requiring a negative voltage from a positive source as low as 1.15V. The SP6832
device is ideal for both battery-powered and board level voltage conversion applications
with a typical operating current of 700mA at a 5V supply. The SP6832 can output 25mA with
a voltage drop of 500mV. These devices combine a low quiescent current with high efficiency
of 85-90% over most of its load range. Applications include cell phones, PDAs, medical
instruments and other portable equipment. The SP6832 is available in a space-saving 5-pin
SOT23 Package.
VOUT 1
VIN 2
C1- 3
SP6832
5 C1+
4 GND
SP6832DS/04
SP6832 High Speed, High Efficiency Voltage Inverter
1
© Copyright 2000 Sipex Corporation
1 page  
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = +5.0V, C1 = C2 = C3 = 0.33µF and TAMB = 25oC unless otherwise noted. The circuit found in Figure 14 was
used to obtain the following typical performance characteristics (unless otherwise noted).
1,000
900
800
700
600
500
400
300
200
100
0
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
VIN (V)
Figure 7. Supply Current vs. Supply Voltage
0
-1
-2
-3
-4
-5
-6
0
VIN = 2V
VIN = 3V
VIN = 5V
10 20 30 40
IOUT (mA)
50
Figure 8. Output Voltage vs. Output Current with
0.1µF Capacitors
100
90
80
70
60
50
40
30
20
10
0
0
VIN = 5V
VIN = 3V
VIN = 2V
5 10 15 20 25
IOUT (mA)
Figure 9. Power Efficiency vs. Output Current with
0.1µF Capacitors
100
90
80
70
60
50
40
30
20
10
0
0
VIN = 5V
VIN = 3V
VIN = 2V
5 10 15 20 25
IOUT (mA)
Figure 10. Voltage Efficiency vs. Output Current with
0.1µF Capacitors
SP6832DS/04
SP6832 High Speed, High Efficiency Voltage Inverter
5
© Copyright 2000 Sipex Corporation
5 Page 
GND 4
SP6832
1 OUT
Figure 18. Protection for Heavy Loads
1N5817
C3 +VIN
D1 = D2 = 1N4148
D1 D2
IN
2
VOUT1
C1+
5
SP6832
GND
C1 4
C4
C1- 3
1 OUT
VOUT2
C2
VOUT1 = (2 x VIN) - VFD1 - VFD2
VOUT2 = -VIN
where
VOUT1 = positive doubled output voltage,
VIN = input voltage,
VFD1 = forward bias voltage across D1,
VFD2 = forward bias voltage across D2, and
VOUT2 = inverted output voltage.
Figure 19. SP6832 Device Connected in a Doubler/Inverter Combination Circuit
SP6832DS/04
SP6832 High Speed, High Efficiency Voltage Inverter
11
© Copyright 2000 Sipex Corporation
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet SP6832.PDF ] | |
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