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NJU7261 Dataheets PDF



Part Number NJU7261
Manufacturers JRC
Logo JRC
Description C-MOS STEP-UP SWITCHING REGULATOR
Datasheet NJU7261 DatasheetNJU7261 Datasheet (PDF)

NJU7261 Series C-MOS STEP-UP SWITCHING REGULATOR ■ 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 equip.

  NJU7261   NJU7261



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NJU7261 Series C-MOS STEP-UP SWITCHING REGULATOR ■ 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 NJU7261U1 - ** ■ 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 5.0 Line-Up NJU7261U1-30 NJU7261U1-33 NJU7261U1-50 ■ 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.2010-04-14 -1- NJU7261 Series ■ ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL RATINGS (Ta = 25ºC) UNIT Input Voltage CONT Input Voltage Strobe Input Voltage Output Voltage Power Dissipation Operating Temperature Range Storage Temperature Range VIN VCONT VSTB VOUT PD Topr Tstg 10 GND-0.3 ≤ VCONT ≤ 10 GND-0.3 ≤ VSTB ≤ VIN GND-0.3 ≤ VOUT≤ 10 300 -25 to + 75 -40 to +125 V V V V mW ºC ºC 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 PARAMETER SYMBOL Input Voltage Start Voltage Oscillator Freq. Output Voltage Input Stability VIN VSTART fOSC VOUT ∆VOUT1 Load Stability Operating Current Stand-by Current Switching Current STB Terminal Input Voltage STB Terminal Input Current ∆VOUT2 ISS IQ H level L level ISI H level L level VSTBH VSTBL ISTBH1 ISTBH2 ISTBL1 ISTBL2 CONDITION NO LOAD VIN = 1.5V VIN = 1.5V, IOUT = 20mA VIN = 1.5V to 2.0V IOUT = 20mA VIN = 1.5V IOUT = 10µA to 25mA VIN = VSTB = 1.5V, NO LOAD VIN = 1.5V VSTB = 0V, NO LOAD VDS = 0.2V VIN = 1.5V VIN = 1.5V VIN = 1.5V, VSTB = 1.0V VIN = 1.5V, VSTB = 1.5V VIN = 1.5V, VSTB = 0.4V VIN = 1.5V, VSTB = 0V MIN. 20 2.91 - - - - 1.0 - NORM TYP. 30 3.0 30 MAX. 5.0 1.0 50 3.09 100 30 100 5.0 10 - 0.2 250 -- 0.4 15 30 0.1 15 30 0.1 - (Ta = 25°C) UNIT MEASUREMENT CIRCUIT V1 V1 kHz 2 V1 mV 1 mV 1 µA 3 µA 4 mA V5 V5 µA 6 µA 6 µA 6 µA 6 -2- Ver.2010-04-14 NJU7261 Series +3.3V Version PARAMETER Input Voltage Start Voltage Oscillator Freq. Output Voltage Input Stability Load Stability Operating Current Stand-by Current Switching Current STB Terminal Input Voltage STB Terminal Input Current SYMBOL VIN VSTART fOSC VOUT ∆VOUT1 ∆VOUT2 ISS IQ H level L level ISI H level L level VSTBH VSTBL ISTBH1 ISTBH2 ISTBL1 ISTBL2 CONDITION NO LOAD VIN = 1.5V VIN = 1.5V, IOUT = 20mA VIN = 1.5V to 3.0V IOUT = 20mA VIN = 1.5V IOUT = 10µA to 25mA VIN = VSTB = 1.5V, NO LOAD VIN = 1.5V VSTB = 0V, NO LOAD VDS = 0.2V VIN = 1.5V VIN = 1.5V VIN = 1.5V, VSTB = 1.0V VIN = 1.5V, VSTB = 1.5V VIN = 1.5V, VSTB = 0.4V VIN = 1.5V, VSTB = 0V MIN. 20 3.20 - - - - 1.0 - NORM TYP. 30 3.30 30 MAX. 5.0 1.0 50 3.40 100 30 100 5 10 - 0.2 250 -- 0.4 15 30 0.1 15 30 0.1 - (Ta = 25°C) UNIT MEASUREMENT CIRCUIT V1 V1 kHz 2 V1 mV 1 mV 1 µA 3 µA 4 mA V5 V5 µA 6 µA 6 µA 6 µA 6 +4.5V Version PARAMETER Input Voltage Start Voltage Oscillator Freq. Output Voltage Input Stability Load Stability Operating Current Stand-by Current Switching Current STB Terminal Input Voltage STB Terminal Input Current SYMBOL VIN VSTART fOSC VOUT ∆VOUT1 ∆VOUT2 ISS IQ H level L level ISI H level L level VSTBH VSTBL ISTBH1 ISTBH2 ISTBL1 ISTBL2 CONDITION NO LOAD VIN = 3.0V VIN = 3.0V, IOUT = 20mA VIN = 2.0V to 3.0V IOUT = 20mA VIN = 3.0V IOUT = 10µA to 25mA VIN = VSTB = 3.0V, NO LOAD VIN = 3.0V VSTB = 0V, NO LOAD VDS = 0.2V VIN = 3.0V VIN = 3.0V VIN = 3.0V, VSTB = 2.4V VIN = 3.0V, VSTB = 3.0V VIN = 3.0V, VSTB = 0.4V VIN = 3.0V, VSTB = 0V MIN. 20 4.36 - - - - 2.4 - NORM TYP. 30 4.50 30 MAX. 4.5 1.0 50 4.64 100 30 100 5 15 - 0.2 250 -- 0.4 50 100 0.1 50 100 0.1 - (Ta = 25°C) UNIT MEASUREMENT CIRCUIT V1 V1 kHz 2 V1 mV 1 mV 1 µA 3 µA 4 mA V5 V5 µA 6 µA 6 µA 6 µA 6 Ver.2010-04-14 -3- .


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