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PDF NJU7261 Data sheet ( Hoja de datos )
| Número de pieza | NJU7261 | |
| Descripción | Switching Regulator IC / SOT89 (5Pin) -U1 | |
| Fabricantes | JRC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de NJU7261 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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NJU7261 Series
C-MOS STEP-UP SWITCHING REGULATOR
PRELIMINARY
■ GENERAL DESCRIPTION
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.
■ PACKAGE OUTLINE
NJU7261UX
■ FEATURES
• Low Operating Voltage
(1.0V min.)
• Low Operating Current
(5.0µA typ. / VOUT = 3.0V)
• Low Stand-by Current
(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
■ PIN CONFIGULATION
■ LINE-UP
■ EQUIVALENT CIRCUIT
Output Voltage (V)
3.0
3.3
4.5
5.0
Line-Up
NJU7261U30
NJU7261U33
NJU7261U45
NJU7261U50
■ TERMINAL DESCRIPTION
No. Term. Name
1 CONT
2 GND
I/O
I
POWER
3 STB
I
4 VIN POWER
5 VOUT
O
FUNCTION
External Inductor Connect Terminal
Power Source (GND)
Strobe Terminal : "H" or OPEN···Normal Operation (step-up)
" L" ···Standp-By Operation
Power Source (+)
Step-up Output Terminal
Ver.2003-07-18
-1-
1 page  
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■ MEASUREMENT CIRCUIT 1
(1)
NJU7261 Series
External Diode Type : "D1NS4" provided by SHINDENGEN
(IF = 1A, VF = 0.55V)
(2)
(3)
Ver.2003-07-18
ISS = I1 + l2 x
VOUT
V2
Under the condition of V2 =VOUT + 1.0V
-5-
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet NJU7261.PDF ] | |
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