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PDF CE7660 Data sheet ( Hoja de datos )
| Número de pieza | CE7660 | |
| Descripción | Charge Pump DC-DC Voltage Converter | |
| Fabricantes | Nanjing Chipower Electronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de CE7660 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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Charge Pump DC-DC Voltage Converter
CE7660
Charge Pump
DC-DC Voltage Converter
CE7660
CE7660 is a charge pump dc-to-dc
voltage converter using Si-gate CMOS
technology and optimization design. It
converters a +2.5V to +10V input to a
corresponding -2.5V to -10V output using
only two external capacitors, eliminating
inductors and their associated cost, size
and EMI. The on-board oscillator operates
at a nominal frequency of 10KHz.
Operation below 10 KHz (for lower supply
current applications) is possible by
connecting an external capacitor from OSC
to ground.
Features
• Wide input voltage range: 2.5V~10V
• Efficient voltage conversion:99.9%
• Good power efficiency: 98%
• Low power supply: 50uA @5V input
• Easy to use: only two external
capacitors required
• Compatible with RS232 negative
power supply standard
• High ESD protection: up to 4KV
• No Dx diode needed for high voltage
operation
• Package : SOP8, DIP8
Applications
• LCD Display Module
• Specially designed for LCD module
• Instrument product
• RS-232 Power supply
• Operation amplifier supply
• On board negative supply for dynamic
RAMS
Pin Configuration
NC
CAP＋
GND
CAP－
1
2
3
4
8 VDD
7 OSC
6 LV
5 Vout
CE7660
DIP8 / SOP8
Pin Description
PIN Number
1
2
3
4
5
6
7
8
PIN NAME
NC
CAP+
GND
CAP-
Vout
LV
OSC
VDD
FUNCTION
No connection
Connecting external capacitor(+) pin
Ground pin
Connecting external capacitor(-) pin
Voltage output pin
Low voltage selection pin
Connecting oscillation capacitor pin
Power supply pin
Nanjing Chipower Electronics Inc.
1(8)
1 page  
Charge Pump DC-DC Voltage Converter
Typical Application
CE7660
Above figure is the basic application circuit to
provide a negative supply from -2.5V~ -10V
while a positive supply from +2.5V ~ +10V is
available. When VDD=+5V, the output
resistance is about 60Ω; The output voltage is
–4.5V while the load current is 10mA.
CE7660 may be paralleled to reduce output
resistance (see the above figure)
Rout(Paralleled)=Rout/N
CE7660 may be cascaded as shown above to
produce larger negative output voltage (-10V).
However, The output resistance is approximately
double that of a single chip resistance.
CE7660 may be cascaded as shown above to
produce larger negative output voltage (-15V).
However, The output resistance is approximately
double that of a single chip resistance.
Nanjing Chipower Electronics Inc.
5(8)
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet CE7660.PDF ] | |
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