NJU7261 Datasheet, PDF (1/8 Pages) New Japan Radio – C-MOS STEP-UP SWITCHING REGULATOR

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. / V_OUT = 3.0V)
• Low Stand-by Current
(0.2µA max. / V_OUT = 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
I/O
1
CONT
I
2
GND
POWER
3
STB
I
4
V_IN
POWER
5
V_OUT
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-