.
U
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D
NJW4190/NJW4191
Doubler/Invert Charge Pump IC
PACKAGE OUTLINE
FEATURES
Operating Voltage Range 6V to 15V
Output Current
55mA
V
OUT
Programmable
Stand-by Function
Synchronizable to an External Clock
divide-by-4 counter
Thermal Shutdown
Package Outline
DMP8, VSP8
NJW4190M
NJW4191M
(DMP8)
NJW4190R
NJW4191R
(VSP8)
Doubler Charge Pump
Maximum Output Voltage 30V
ON/OFF
High: ON
Low : OFF
Thermal
Shut Down
Level Shift
Inverting Charge Pump
Maximum Output Voltage -15V
ON/OFF
High: ON
Low : OFF
V
OUT
C+
V
+
V
OUT
1μF
1μF
1μF
V
+
V
Level
Shift
+
V
1μF
+
Level
Shift
1/4
Divider
Thermal
Shut Down
C+
GND
1μF
Clock
Generator
Level
Shift
C-
GND
Clock
Generator
1/4
Divider
Level
Shift
C-
V
OUT
FB
V
OUT
1μF
CLK
CLK
FB
Vref
Vref
Please note that this device is still under the development
and therefore the specifications are subject to change.
MLCC is corresponding
Ver.2010/09/03
1
NJW4190/91 Advantage
and Difference with SW.REG.
Charge pump IC is boost or inverted
voltage converter of the small electric
power usage with few emission noise.
These are suitable for Bias Voltage
Source of LCD-panel, CCD, Sensor
and Amplifier.
SW-Reg IC
Emission noise is big to
use Inductor
Required many ext
parts
Rising cost
Output power is high
Wide output voltage
range
Charge Pomp IC
Emission noise is small
to use capacitor
Ext parts is little
Low cost
Output power is low
Limited output voltage
range
NJW4190/91 are improved about following
matters: MLCC corresponding, Output
Current Capability and Output Voltage
adjustment
NJW4190
Circuit Type
Operating
Voltage
Range
Capacitor
Output
Current
Setting
Output
Voltage
ON/OFF
Protection
Circuit
Package
For doubler
6V∼15V
NJW4191
For Inverting
6V∼15V
Competitive
7662
For Doubler/
Negative
6V∼20V
MLCC:1μF
Over 20mA
Available
MLCC:1μF
Over 20mA
Available
AL:10μF
Up to 20mA
NG
x
Thermal
Shutdown
VSP8, DMP8
x
Thermal
Shutdown
VSP8, DMP8
None
None
DIP8, DMP8
Please note that this device is still under the development
and therefore the specifications are subject to change.
Ver.2010/09/03
2
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