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PDF NJU7660A Data sheet ( Hoja de datos )
| Número de pieza | NJU7660A | |
| Descripción | VOLTAGE CONVERTER | |
| Fabricantes | New Japan Radio | |
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Hay una vista previa y un enlace de descarga de NJU7660A (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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NJU7660A
VOLTAGE CONVERTER
GENERAL DESCRIPTION
NJU7660A is a CMOS switched capacitor, voltage converter
designed to be an Improved direct replacement of popular 7660/1044.
NJU7660A provides several voltage conversion functions.
The application circuit of negative voltage(VOUT=-VIN) converter
requires only two capacitors, and positive twofold voltage(VOUT=2VIN)
converter requires two capacitors and two diode as external components.
PACKAGE OUTLINE
NJU7660AM
NJU7660AV
FEATURES
Full Compatible with NJU7660
Correspond to MLCC and electrolytic capacitor
Twofold positive Output
Polarity-converted Negative voltage Output
Operating voltage range
:+1.5V to +10V(for Negative voltage converter)
:+3.0V to +10V(for Twofold voltage converter)
High-efficiency voltage conversion rate
:99.9%(No load, Negative voltage converter)
Few external components
:2 capacitors(Negative voltage converter)
:2 capacitors, 2diode(Twofold voltage converter)
Package Outline
:DMP8, SSOP8
CMOS Technology
PIN CONFIGURATION
http://www.DataSheet4U.net/
18
27
36
45
NJU7660AM
NJU7660AV
PIN FUNCTION
1. N.C.
2. C+
:Non Connection
:Charge pump Capacitor(+) Connecting pin
3. GND
4. C-
:Ground pin
:Charge pump Capacitor(-) Connecting pin
5. VOUT :Voltage Output pin
6. VR
:Voltage Regulator Control pin
7. OSC
8. V+
:Oscillation Capacitor Connecting pin
:Power Supply pin
PRODUCT CLASSIFICATION
Device Name
NJU7660A
NJU7660B
Oscillation
Frequency
5kHz typ.
200kHz typ.
Output
Resistance
55Ω typ.
30Ω typ.
Operating
Current
40µA typ.
800µA typ.
C1/C2 capacitor
10µF
1µF
Status
M.P
PLAN
Ver.2013-05-15
-1-
datasheet pdf - http://www.DataSheet4U.net/
1 page  
NJU7660A
TEST CIRCUIT
The measurement circuit diagram of negative voltage is
shown bellow. VR pin must connect to GND or Open
according to the operating voltage as follows:
V+ < 3.5V :Connected to GND
V+ ≥ 3.5V :OPEN
C1
10µF
NC V
C+ OSC
NJU7660A
GND
VR
VIN=1.5V~10V
COSC
RL
The oscillation frequency can be lowered by connected
external capacitor to the OSC pin, furthermore it can be
also driven by external clock generator.
C-
VOUT
(*5)
(*5):In case of the operation voltage is 6.5V or more,
a Diode must be connected to VOUT pin.
VOUT= -VIN
C2
10µF
If it is less than 6.5V, the Diode is not required
TYPICAL APPLICATION
1-1 Negative Voltage Output 1
1.5V to 3.5V operation
1-2 Negative Voltage Output 2
3.5V to 10V operation
VIN=1.5V~3.5V
VIN=3.5V~10.0V
+
10µF
-
1 N.C V+ 8
2 C+ OSC 7
3 GND VR 6
4 C- VOUT 5
NJU7660A
VOUT=-VIN
+
10µF
http://www.DataSheet4U.net/
-
- 10µF
+
1 N.C V+ 8
2 C+ OSC 7
3 GND VR 6
4 C- VOUT 5
NJU7660A
VOUT=-VIN
()
- 10µF
+
*It can use ceramic condenser too.
*It can use ceramic condenser too.
(*6): VR pin must connect to GND or Open according to the operating voltage as follows:
V+ < 3.5V :Connected to GND
V+ ≥ 3.5V :OPEN
(*7): In case of the operation voltage is 6.5V or more, a Diode must be connected to VOUT pin. If it is less than 6.5V, the
Diode is not required
2 Twofold positive Voltage Output
1 N.C V+ 8
2 C+ OSC 7
3 GND VR 6
4 C- VOUT 5
NJU7660A
VIN 3.0V 10V
D1
D2
+
10µF
-
VOUT=2VIN-2VF
VF: Forward Voltage of Diodes
10µF
*It can use ceramic condenser too.
Ver.2013-05-15
-5-
datasheet pdf - http://www.DataSheet4U.net/
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet NJU7660A.PDF ] | |
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