NJW4190
Doubler Charge Pump IC
GENERAL DESCRIPTION
The NJW4190 is the doubler charge pump IC that operates wide
5V to 17V input range. With only the external part of an input/output
capacitor and a charge pump capacitor, can compose the doubler
voltage circuit. It has a high current capability and a corresponding
to small-sized capacitor compared with conventional product such
as popular 7660/7662.
For usability, it has ON/OFF function, Output Voltage Adjustable
function and external synchronous function.
The NJW4190 is suitable for the bias voltage of CCD, sensors
and operational amplifiers.
There is the NJW4191 for inverter voltage output application.
PACKAGE OUTLINE
NJW4190R
NJW4190M
FEATURES
Doubler Output
34V max.
Wide Operating Voltage Range
5V to 17V
Maximum Output Current
55mA max.
Correspond to Ceramic Capacitor (MLCC)
V
OUT
Programmable
ON/OFF Function
Built-in Oscillation Circuit
300kHz typ.
External Synchronization Function divide-by-4 counter (A ver.)
Thermal Shutdown
Function Compatible to NJU7660/NJU7662 Doubler Circuit*
Package Outline
NJW4190R
: MSOP8 (VSP8)**
NJW4190M
: DMP8
*
The NJW4190 is not pin compatible to NJU7660/62.
** MEET JEDEC MO-187-DA
PIN CONFIGURATION
PIN FUNCTION
1. FB
2. C+
3. V
+
4. C-
5. GND
6. CLK
7. ON/OFF
8. V
OUT
1
2
3
4
8
7
6
5
NJW4190R
NJW4190M
Ver.2013-02-12
-1-
NJW4190
BLOCK DIAGRAM
ON/OFF
High: ON
Low : OFF
Thermal
Shut Down
Level Shift
V
OUT
Level
Shift
C+
V
+
Clock
Generator
Divider
Int. CLK: 1/2
Ext. CLK: 1/4
Level
Shift
C-
GND
CLK
FB
Vref
1.24V
PRODUCT CLASSIFICATION
PART NUMBER
NJW4190R-A
NJW4190M-A
Divider
External CLK: 1/4
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYNBOL
Input Voltage
V
+
FB pin Voltage
V
FB
ON/OFF pin Voltage
V
ON/OFF
CLK pin Voltage
V
CLK
Maximum Output Current
I
OUT
Power Dissipation
Operating Temperature
Storage Temperature
P
D
T
opr
T
stg
MAXIMUM RATINGS
+20
-0.3 to +6
-0.3 to +6
-0.3 to +6
55
MSOP8 (VSP8)
: 595 (*1)
DMP8
: 530 (*1)
-40 to +85
-40 to +150
(Ta=25°C)
UNIT
V
V
V
V
mA
mW
°C
°C
(*1): Mounted on glass epoxy board. (76.2×114.3×1.6mm:EIA/JDEC standard size, 2Layers)
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
MIN.
+
Supply Voltage
V
5
External CLK Input Range
300
f
CLK
A version (*2)
External CLK Duty Input Range
DUTY
45
TYP.
–
–
–
MAX.
17
2,000
80
UNIT
V
kHz
%
(*2): The oscillation frequency is output from the V
OUT
pin that external clock input frequency divided by four (4).
-2-
Ver.2013-02-12
NJW4190
ELECTRICAL CHARACTERISTICS
(Unless otherwise noted, V
+
= 10V, V
ON/OFF
= 5V, V
FB
= GND, V
CLK
=GND, C1=C2=C3=1µF, Ta=25°C)
PARAMETER
General Characteristics
Supply Current
Output Resistance
Oscillation Frequency
Power Efficiency
Voltage Conversion Efficiency
ON/OFF Block
ON Control Voltage
OFF Control Voltage
ON/OFF pin Current
FB Block
Detection Voltage
FB pin Sink Current
CLK Block
CLK Threshold (High)
CLK Threshold (Low)
CLK pin Sink Current
I
DD1
I
DD2
R
O
f
OSC
P
EF
V
EF
V
ON/OFF
=5V, R
L
=no Load
V
ON/OFF
=GND
I
OUT
=20mA
R
L
=2kΩ
R
L
=no Load
–
–
–
–
88
97
950
55
30
300
93
99.9
1,250
75
42
–
–
–
µA
µA
Ω
kHz
%
%
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
V
ON
V
OFF
I
ON/OFF
V
ON/OFF
= L
→
H
V
ON/OFF
= H
→
L
V
ON/OFF
=1.7V
1.7
0
–
–
–
2
5.5
0.6
5
V
V
µA
V
T
I
FB
V
FB
= L
→
H
V
FB
=5.5V
-10%
–
1.24
0.01
+10%
1
V
µA
V
CLK_H
V
CLK_L
I
CLK
V
CLK
=5.5V
2.4
0
–
–
–
6
5.5
0.7
10
V
V
µA
Ver.2013-02-12
-3-
NJW4190
TYPICAL APPLICATION
1
2
C2
V
+
FB
C+
V
+
V
OUT
8
V
OUT
C3
ON/OFF
7
R2
NJW4190
3
C1
CLK
6
R1
4
CLK
C-
GND
5
ON/OFF
High: ON
Low: OFF
-4-
Ver.2013-02-12
NJW4190
CHARACTERISTICS
Power Efficiency vs. Output Current
100
90
80
70
60
50
40
30
20
10
0
(V
+
=10V, C1=C2=C3=1µF, Ta=25
o
C)
(V)
20
18
16
14
12
10
Output voltage vs. Output Current
(V
+
=10V, C1=C2=C3=1µF, Ta=25
o
C)
Power Efficiency P
EF
(%)
0
10
20
30
40
50
Output Current I
OUT
(mA)
60
Output Voltage V
OUT
0
10
20
30
40
50
Output Current I
OUT
(mA)
60
Output Resistance vs. Temperature
50
(Ω)
40
30
20
10
0
-50 -25 0 25 50 75 100 125 150
o
Ambient Temperature Ta ( C)
Oscillation Frequency fosc (kHz)
(V
+
=10V, C1=C2=C3=1µF, I
OUT
=20mA)
360
340
320
300
280
260
Oscillation Frequency vs. Temperature
(V
+
=10V, C1=C2=C3=1µF)
Output Resistance R
O
240
-50 -25 0 25 50 75 100 125 150
o
Ambient Temperature Ta ( C)
FB Detection Voltage vs. Temperature
1.35
FB Detection Voltage V (V)
1.3
1.25
1.2
1.15
1.1
-50 -25 0 25 50 75 100 125 150
o
Ambient Temperature Ta ( C)
T
(V
+
=10V, C1=C2=C3=1µF)
Ver.2013-02-12
-5-
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
