NJU7261U1-33 [NJRC]
Switching Regulator;
| 型号： | NJU7261U1-33 |
| 厂家： | 
NEW JAPAN RADIO |
| 描述： | Switching Regulator 开关 |
| 文件： | 总9页 (文件大小：179K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Designated client product
This product will be discontinued its production in the near term.
And it is provided for customers currently in use only, with a time limit.
It can not be available for your new project. Please select other new or
existing products.
For more information, please contact our sales office in your region.
New Japan Radio Co.,Ltd.
http://www.njr.com/
NJU7261 Series
C-MOS STEP-UP SWITCHING REGULATOR
■ GENERAL DESCRIPTION
■ PACKAGE OUTLINE
The NJU7261 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 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.
NJU7261U1 - **
■ FEATURES
■ PIN CONFIGULATION
• Low Operating Voltage
• Low Operating Current
• Low Stand-by Current
(1.0V min.)
(5.0µA typ. / VOUT = 3.0V)
(0.2µA max. / VOUT = 3.0V)
• High Precision Output Voltage (±3% max.)
• Wide Operating Voltage Range
• Stand-by Function
• CR Oscillator On-chip
• Diode On-chip
• Package Outline
SOT89-5
• C-MOS Technology
■ LINE-UP
■ EQUIVALENT CIRCUIT
Output Voltage (V)
Line-Up
3.0
3.3
5.0
NJU7261U1-30
NJU7261U1-33
NJU7261U1-50
■ TERMINAL DESCRIPTION
No.
1
Term. Name
CONT
I/O
FUNCTION
I
External Inductor Connect Terminal
2
GND
POWER
Power Source (GND)
Strobe Terminal : "H" or OPEN···Normal Operation (step-up)
3
STB
I
" L"
···Standp-By Operation
4
5
VIN
POWER
O
Power Source (+)
Step-up Output Terminal
VOUT
Ver.2010-04-14
- 1 -
NJU7261 Series
■ ABSOLUTE MAXIMUM RATINGS
(Ta = 25ºC)
PARAMETER
Input Voltage
SYMBOL
RATINGS
10
UNIT
V
VIN
VCONT
VSTB
VOUT
PD
CONT Input Voltage
Strobe Input Voltage
Output Voltage
GND-0.3 ≤ VCONT ≤ 10
GND-0.3 ≤ VSTB ≤ VIN
GND-0.3 ≤ VOUT ≤ 10
300
V
V
V
Power Dissipation
mW
ºC
ºC
Operating Temperature Range
Storage Temperature Range
Topr
-25 to + 75
Tstg
-40 to +125
Note1) When a coil used. This IC of VCONT possible over the absolute maximum ratings. Consequently please conduct
enough to test.
Note2) The CONT input voltage (VCONT) should be inspected at the real application circuit, as some kinds of coils make
the CONT input voltage exceed the Absolute Maximum Rating of the VCONT
.
■ ELECTRICAL CHARACTERISTICS
+3.0V Version
(Ta = 25°C)
NORM
MEASUREMENT
CIRCUIT
PARAMETER
SYMBOL
CONDITION
UNIT
MIN.
-
TYP.
-
MAX.
5.0
Input Voltage
Start Voltage
VIN
VSTART
fOSC
V
V
1
1
2
1
NO LOAD
-
-
1.0
Oscillator Freq.
Output Voltage
VIN = 1.5V
20
2.91
30
3.0
50
kHz
V
VOUT
VIN = 1.5V, IOUT = 20mA
3.09
VIN = 1.5V to 2.0V
IOUT = 20mA
Input Stability
∆VOUT1
-
30
100
mV
1
VIN = 1.5V
IOUT = 10µA to 25mA
Load Stability
∆VOUT2
ISS
-
-
-
30
5.0
-
100
10
mV
µA
µA
1
3
4
Operating Current
Stand-by Current
Switching Current
VIN = VSTB = 1.5V, NO LOAD
VIN = 1.5V
IQ
0.2
VSTB = 0V, NO LOAD
ISI
VDS = 0.2V
-
1.0
-
250
-
-
-
mA
V
-
H level
VSTBH
VSTBL
ISTBH1
ISTBH2
ISTBL1
ISTBL2
VIN = 1.5V
5
5
6
6
6
6
STB Terminal
Input Voltage
L level
VIN = 1.5V
-
0.4
30
-
V
VIN = 1.5V, VSTB = 1.0V
VIN = 1.5V, VSTB = 1.5V
VIN = 1.5V, VSTB = 0.4V
VIN = 1.5V, VSTB = 0V
-
15
0.1
15
0.1
µA
µA
µA
µA
H level
-
STB Terminal
Input Current
-
30
-
L level
-
Ver.2010-04-14
- 2 -
NJU7261 Series
+3.3V Version
(Ta = 25°C)
NORM
MEASUREMENT
CIRCUIT
PARAMETER
SYMBOL
CONDITION
UNIT
MIN.
-
TYP.
-
MAX.
5.0
Input Voltage
Start Voltage
VIN
VSTART
fOSC
V
V
1
1
2
1
NO LOAD
-
-
1.0
Oscillator Freq.
Output Voltage
VIN = 1.5V
20
3.20
30
3.30
50
kHz
V
VOUT
VIN = 1.5V, IOUT = 20mA
VIN = 1.5V to 3.0V
OUT = 20mA
VIN = 1.5V
OUT = 10µA to 25mA
3.40
Input Stability
∆VOUT1
-
30
100
mV
1
I
Load Stability
∆VOUT2
ISS
-
-
-
30
5
100
10
mV
µA
µA
1
3
4
I
Operating Current
Stand-by Current
Switching Current
VIN = VSTB = 1.5V, NO LOAD
VIN = 1.5V
VSTB = 0V, NO LOAD
IQ
-
0.2
ISI
VDS = 0.2V
-
1.0
-
250
-
-
-
mA
V
-
H level
VSTBH
VSTBL
ISTBH1
ISTBH2
ISTBL1
ISTBL2
VIN = 1.5V
5
5
6
6
6
6
STB Terminal
Input Voltage
L level
VIN = 1.5V
-
0.4
30
-
V
VIN = 1.5V, VSTB = 1.0V
VIN = 1.5V, VSTB = 1.5V
VIN = 1.5V, VSTB = 0.4V
VIN = 1.5V, VSTB = 0V
-
15
0.1
15
0.1
µA
µA
µA
µA
H level
-
STB Terminal
Input Current
-
30
-
L level
-
+4.5V Version
(Ta = 25°C)
NORM
MEASUREMENT
CIRCUIT
PARAMETER
SYMBOL
CONDITION
UNIT
MIN.
-
TYP.
-
MAX.
4.5
Input Voltage
Start Voltage
VIN
VSTART
fOSC
V
V
1
1
2
1
NO LOAD
-
-
1.0
Oscillator Freq.
Output Voltage
VIN = 3.0V
20
4.36
30
4.50
50
kHz
V
VOUT
VIN = 3.0V, IOUT = 20mA
4.64
VIN = 2.0V to 3.0V
IOUT = 20mA
Input Stability
∆VOUT1
-
30
100
mV
1
VIN = 3.0V
IOUT = 10µA to 25mA
Load Stability
∆VOUT2
ISS
-
-
-
30
5
100
15
mV
µA
µA
1
3
4
Operating Current
Stand-by Current
Switching Current
VIN = VSTB = 3.0V, NO LOAD
VIN = 3.0V
IQ
-
0.2
VSTB = 0V, NO LOAD
ISI
VDS = 0.2V
-
2.4
-
250
-
-
-
mA
V
-
H level
L level
VSTBH
VSTBL
ISTBH1
ISTBH2
ISTBL1
ISTBL2
VIN = 3.0V
5
5
6
6
6
6
STB Terminal
Input Voltage
VIN = 3.0V
-
0.4
100
-
V
VIN = 3.0V, VSTB = 2.4V
VIN = 3.0V, VSTB = 3.0V
VIN = 3.0V, VSTB = 0.4V
VIN = 3.0V, VSTB = 0V
-
50
0.1
50
0.1
µA
µA
µA
µA
H level
L level
-
STB Terminal
Input Current
-
100
-
-
Ver.2010-04-14
- 3 -
NJU7261 Series
+5.0V Version
(Ta = 25°C)
NORM
MEASUREMENT
CIRCUIT
PARAMETER
SYMBOL
CONDITION
UNIT
MIN.
-
TYP.
-
MAX.
5.0
Input Voltage
Start Voltage
VIN
VSTART
fOSC
V
V
1
1
2
1
NO LOAD
-
-
1.0
Oscillator Freq.
Output Voltage
VIN = 3.0V
20
4.85
30
5.0
50
kHz
V
VOUT
VIN = 3.0V, IOUT = 20mA
VIN = 2.0V to 3.0V
OUT = 20mA
VIN = 3.0V
OUT = 10µA to 25mA
5.15
Input Stability
∆VOUT1
-
30
100
mV
1
I
Load Stability
∆VOUT2
ISS
-
-
-
30
5
100
15
mV
µA
µA
1
3
4
I
Operating Current
Stand-by Current
Switching Current
VIN = VSTB = 3.0V, NO LOAD
VIN = 3.0V
VSTB = 0V, NO LOAD
IQ
-
0.2
ISI
VDS = 0.2V
-
2.4
-
250
-
-
-
mA
V
-
H level
VSTBH
VSTBL
ISTBH1
ISTBH2
ISTBL1
ISTBL2
VIN = 3.0V
5
5
6
6
6
6
STB Terminal
Input Voltage
L level
VIN = 3.0V
-
0.4
100
-
V
VIN = 3.0V, VSTB = 2.4V
VIN = 3.0V, VSTB = 3.0V
VIN = 3.0V, VSTB = 0.4V
VIN = 3.0V, VSTB = 0V
-
50
0.1
50
0.1
µA
µA
µA
µA
H level
-
STB Terminal
Input Current
-
100
-
L level
-
Ver.2010-04-14
- 4 -
NJU7261 Series
■ MEASUREMENT CIRCUIT 1
(1)
External Diode Type : "D1NS4" provided by SHINDENGEN
(IF = 1A, VF = 0.55V)
(2)
(3)
V
OUT
ISS = I1 + l2 x
V
2
Under the condition of V2 =VOUT + 1.0V
Ver.2010-04-14
- 5 -
NJU7261 Series
■ MEASUREMENT CIRCUIT 2
(4)
(5)
(6)
Ver.2010-04-14
- 6 -
NJU7261 Series
■ APPLICATION CIRCUIT
Ver.2010-04-14
- 7 -
NJU7261 Series
■ TYPICAL CHARACTERISTIC
Start Voltage vs. Temperature
Start Voltage vs. Temperature
Internal Oscillator Operation : External D1NS4
Internal Oscillator Operation : External D1NS4
Oscillation Frequency vs. Temperature
Oscillation Frequency vs. Temperature
[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.
Ver.2010-04-14
- 8 -
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