NJU7262 Series
- 1 -
Ver.2003-07-18
PRELIMINARY
C-MOS STEP-UP SWITCHING REGULATOR
GENERAL DESCRIPTION
PACKAGE OUTLINE
The NJU7262 series is a C-MOS step-up switching regulator
which contains accurate voltage reference, error amplifier, CR
oscillator, control circuit, switching transistor, diode and resistor.
The operating clock is prepared on-chip or is available to input
from external, and the stand-by function is effective for low power
consumption.
The regulation voltage is fixed by internal circuits and the following
line-up of different output voltages version are available.
This series is suitable for portable equipment's or battery operated
items because of its small packaged outline, low operating voltage
and current.
FEATURES
PIN CONFIGURATION
Low Operating Voltage
(1.0V min.)
Low Operating Current
(5.0A typ. / V
OUT
= 3.0V)
Low Stand-by Current
(0.2A max. / V
OUT
= 3.0V)
High Precision Output Voltage (3% max.)
Wide Operating Voltage Range
External/Internal Clock Select Function
Stand-by Function
CR Oscillator On-chip
Diode On-chip
Package
Outline
DMP-8/SSOP-8/VSP-8
C-MOS Technology
LINE-UP
EQUIVALENT CIRCUIT
Package
Output Voltage (V)
DMP-8 SSOP-8 VSP-8
3.0 NJU7262M30
NJU7262V30
NJU7262R30
5.0 NJU7262M50
NJU7262V50
NJU7262R50
TERMINAL DESCRIPTION
No. Term.
Name I/O
FUNCTION
1
CONT
I
External Inductor Connect Terminal
2
GND
POWER
Power Source (GND)
3 NC -
Non
Connect
4 STB I
Strobe Terminal : "H" or OPEN Normal Operation (step-up)
" L " Standp-By Operation
5 V
IN
POWER
Power Source (+)
6
SW
I
External / Internal "H" or OPENInternal Oscillation
Clock Select Terminal "L" External Clock Input
(When "L" level is input, Internal oscillation is stopped)
7
CLK
I
External Clock Input Terminal
8 V
OUT
O
Step-up
Output
Terminal
NJU7262MXX
NJU7262VXX
NJU7262RXX
NJU7262 Series
- 2 -
Ver.2003-07-18
ABSOLUTE MAXIMUM RATINGS
(T
a
= 25C)
PARAMETER SYMBOL
RATINGS
UNIT
Input Voltage
V
IN
10 V
CONT Input Voltage
V
CONT
GND-0.3
V
CONT
10
V
STB, SW, CLK Input Voltage
V
I
GND-0.3
V
I
V
IN
V
Output Voltage
V
OUT
GND-0.3
V
OUT
10
V
Power Dissipation
P
D
(DMP-8) 300
(SSOP-8) 250
(VSP-8) 320
mW
Operating Temperature Range
T
opr
-25 to + 75
C
Storage Temperature Range
T
stg
-40 to +125
C
Note) Decoupling capacitor should be connected between V
DD
and V
SS
due to the stabilized operation for the voltage
converter.
ELECTRICAL CHARACTERISTICS
+3V Version
(T
a
= 25C)
NORM
PARAMETER SYMBOL
CONDITION
MIN. TYP. MAX.
UNIT
MEASUREMENT
CIRCUIT
Input Voltage
V
IN
-
-
5.0
V
1
Start Voltage
V
START
NO
LOAD
-
-
1.0
V
1
Oscillator Freq.
f
OSC
V
IN
= 1.5V
20
30
50
kHz
2
Output Voltage
V
OUT
V
IN
= 1.5V, I
OUT
= 20mA
2.91
3.0
3.09
V
1
Input Stability
V
OUT1
V
IN
= 1.5V to 2.0V
I
OUT
= 20mA
- 30
100
mV 1
Load Stability
V
OUT2
V
IN
= 1.5V
I
OUT
= 10A to 25mA
- 30
100
mV 1
Operating Current
I
SS
V
IN
= V
STB
= 1.5V, NO LOAD
-
5.0
10
A
3
Stand-by Current
I
Q
V
IN
= V
sw
= 1.5V
V
STB
= V
CLK
= 0V, NO LOAD
- - 0.2
A 4
Switching Current
I
SI
V
DS
= 0.2V
-
250
-
mA
-
H level
V
STBH
V
IN
= 1.5V
1.0
-
-
V
5
STB Terminal
Input Voltage
L level
V
STBL
V
IN
= 1.5V
-
-
0.4
V
5
H level
V
SWH
V
IN
= 1.5V
1.0
-
-
V
6
SW Terminal
Input Voltage
L level
V
SWL
V
IN
= 1.5V
-
-
0.4
V
6
H level
V
CLKH
V
IN
= 1.5V
1.0
-
-
V
7
CLK Terminal
Input Voltage
L level
V
CLKL
V
IN
= 1.5V
-
-
0.4
V
7
I
STBH1
V
IN
= 1.5V, V
STB
= 1.0V
-
15
30
A
8
H level
I
STBH2
V
IN
= 1.5V, V
STB
= 1.5V
-
0.1
-
A
8
I
STBL1
V
IN
= 1.5V, V
STB
= 0.4V
-
15
30
A
8
STB Terminal
Input Current
L level
I
STBL2
V
IN
= 1.5V, V
STB
= 0V
-
0.1
-
A
8
H level
I
SWH
V
IN
= 1.5V, V
SW
= V
IN
- 0.1 - A 8
SW Terminal
Input Current
L level
I
SWL
V
IN
= 1.5V, V
SW
= 0V
-
10
30
A
8
H level
I
CLKH
V
IN
= 1.5V, V
CLK
= V
IN
-
10
30
A
8
CLK Terminal
Input Current
L level
I
CLKL
V
IN
= 1.5V, V
CLK
= 0V
-
0.1
-
A
8
NJU7262 Series
- 6 -
Ver.2003-07-18
(7)
(8)
APPLICATION CIRCUIT
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
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