NJU7261U30

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 ■ FEATURES • Low Operating Voltage • Low Operating Current • Low Stand-by Current • High Precision Output Voltage • Wide Operating Voltage Range • Stand-by Function • CR Oscillator On-chip • Diode On-chip • Package Outline • C-MOS Technology ■ PIN CONFIGULATION NJU7261UX (1.0V min.) (5.0µA typ. / VOUT = 3.0V) (0.2µA max. / VOUT = 3.0V) (±3% max.) SOT89-5 ■ LINE-UP ■ EQUIVALENT CIRCUIT Output Voltage (V) Line-Up 3.0 NJU7261U30 3.3 NJU7261U33 4.5 NJU7261U45 5.0 NJU7261U50 ■ TERMINAL DESCRIPTION No. Term. Name I/O 1 CONT I 2 GND POWER 3 STB I 4 VIN POWER 5 VOUT O Ver.2003-07-18 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 -1- NJU7261 Series ■ ABSOLUTE MAXIMUM RATINGS PARAMETER (Ta = 25ºC) SYMBOL Input Voltage RATINGS UNIT VIN 10 V CONT Input Voltage VCONT GND-0.3 ≤ VCONT ≤ 10 V Strobe Input Voltage VSTB GND-0.3 ≤ VSTB ≤ VIN V Output Voltage VOUT GND-0.3 ≤ VOUT ≤ 10 V Power Dissipation PD 300 mW Operating Temperature Range Topr -25 to + 75 ºC Storage Temperature Range Tstg -40 to +125 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 (Ta = 25°C) CONDITION NORM MIN. TYP. MAX. UNIT MEASUREMENT CIRCUIT Input Voltage VIN - - 5.0 V 1 Start Voltage VSTART NO LOAD - - 1.0 V 1 Oscillator Freq. fOSC VIN = 1.5V 20 30 50 kHz 2 Output Voltage VOUT VIN = 1.5V, IOUT = 20mA 2.91 3.0 3.09 V 1 - 30 100 mV 1 Input Stability ∆VOUT1 VIN = 1.5V to 2.0V IOUT = 20mA Load Stability ∆VOUT2 VIN = 1.5V IOUT = 10µA to 25mA - 30 100 mV 1 ISS VIN = VSTB = 1.5V, NO LOAD - 5.0 10 µA 3 Stand-by Current IQ VIN = 1.5V VSTB = 0V, NO LOAD - - 0.2 µA 4 Switching Current ISI VDS = 0.2V - 250 - mA - Operating Current STB Terminal Input Voltage STB Terminal Input Current -2- H level VSTBH VIN = 1.5V 1.0 - - V 5 L level VSTBL VIN = 1.5V - - 0.4 V 5 H level L level ISTBH1 VIN = 1.5V, VSTB = 1.0V - 15 30 µA 6 ISTBH2 VIN = 1.5V, VSTB = 1.5V - 0.1 - µA 6 ISTBL1 VIN = 1.5V, VSTB = 0.4V - 15 30 µA 6 ISTBL2 VIN = 1.5V, VSTB = 0V - 0.1 - µA 6 Ver.2003-07-18 NJU7261 Series +3.3V Version PARAMETER (Ta = 25°C) SYMBOL CONDITION Input Voltage VIN Start Voltage VSTART NO LOAD Oscillator Freq. fOSC VIN = 1.5V Output Voltage VOUT VIN = 1.5V, IOUT = 20mA NORM UNIT MEASUREMENT CIRCUIT MIN. TYP. MAX. - - 5.0 V 1 - - 1.0 V 1 20 30 50 kHz 2 3.20 3.30 3.40 V 1 Input Stability ∆VOUT1 VIN = 1.5V to 3.0V IOUT = 20mA - 30 100 mV 1 Load Stability ∆VOUT2 VIN = 1.5V IOUT = 10µA to 25mA - 30 100 mV 1 Operating Current ISS VIN = VSTB = 1.5V, NO LOAD - 5 10 µA 3 Stand-by Current IQ VIN = 1.5V VSTB = 0V, NO LOAD - - 0.2 µA 4 Switching Current ISI VDS = 0.2V - 250 - mA - STB Terminal Input Voltage STB Terminal Input Current H level VSTBH VIN = 1.5V 1.0 - - V 5 L level VSTBL VIN = 1.5V - - 0.4 V 5 ISTBH1 VIN = 1.5V, VSTB = 1.0V - 15 30 µA 6 ISTBH2 VIN = 1.5V, VSTB = 1.5V - 0.1 - µA 6 ISTBL1 VIN = 1.5V, VSTB = 0.4V - 15 30 µA 6 ISTBL2 VIN = 1.5V, VSTB = 0V - 0.1 - µA 6 H level L level +4.5V Version PARAMETER (Ta = 25°C) SYMBOL CONDITION Input Voltage VIN Start Voltage VSTART NO LOAD Oscillator Freq. fOSC VIN = 3.0V Output Voltage VOUT VIN = 3.0V, IOUT = 20mA NORM UNIT MEASUREMENT CIRCUIT 4.5 V 1 1.0 V 1 MIN. TYP. MAX. - - - - 20 30 50 kHz 2 4.36 4.50 4.64 V 1 Input Stability ∆VOUT1 VIN = 2.0V to 3.0V IOUT = 20mA - 30 100 mV 1 Load Stability ∆VOUT2 VIN = 3.0V IOUT = 10µA to 25mA - 30 100 mV 1 Operating Current ISS VIN = VSTB = 3.0V, NO LOAD - 5 15 µA 3 Stand-by Current IQ VIN = 3.0V VSTB = 0V, NO LOAD - - 0.2 µA 4 Switching Current ISI VDS = 0.2V - 250 - mA - STB Terminal Input Voltage STB Terminal Input Current Ver.2003-07-18 H level VSTBH VIN = 3.0V 2.4 - - V 5 L level VSTBL VIN = 3.0V - - 0.4 V 5 ISTBH1 VIN = 3.0V, VSTB = 2.4V - 50 100 µA 6 ISTBH2 VIN = 3.0V, VSTB = 3.0V - 0.1 - µA 6 ISTBL1 VIN = 3.0V, VSTB = 0.4V - 50 100 µA 6 ISTBL2 VIN = 3.0V, VSTB = 0V - 0.1 - µA 6 H level L level -3- NJU7261 Series +5.0V Version PARAMETER (Ta = 25°C) SYMBOL CONDITION Input Voltage VIN Start Voltage VSTART NO LOAD Oscillator Freq. fOSC VIN = 3.0V Output Voltage VOUT VIN = 3.0V, IOUT = 20mA NORM UNIT MEASUREMENT CIRCUIT MIN. TYP. MAX. - - 5.0 V 1 - - 1.0 V 1 20 30 50 kHz 2 4.85 5.0 5.15 V 1 Input Stability ∆VOUT1 VIN = 2.0V to 3.0V IOUT = 20mA - 30 100 mV 1 Load Stability ∆VOUT2 VIN = 3.0V IOUT = 10µA to 25mA - 30 100 mV 1 Operating Current ISS VIN = VSTB = 3.0V, NO LOAD - 5 15 µA 3 Stand-by Current IQ VIN = 3.0V VSTB = 0V, NO LOAD - - 0.2 µA 4 Switching Current ISI VDS = 0.2V - 250 - mA - STB Terminal Input Voltage STB Terminal Input Current -4- H level VSTBH VIN = 3.0V 2.4 - - V 5 L level VSTBL VIN = 3.0V - - 0.4 V 5 ISTBH1 VIN = 3.0V, VSTB = 2.4V - 50 100 µA 6 ISTBH2 VIN = 3.0V, VSTB = 3.0V - 0.1 - µA 6 ISTBL1 VIN = 3.0V, VSTB = 0.4V - 50 100 µA 6 ISTBL2 VIN = 3.0V, VSTB = 0V - 0.1 - µA 6 H level L level Ver.2003-07-18 NJU7261 Series ■ MEASUREMENT CIRCUIT 1 (1) External Diode Type : "D1NS4" provided by SHINDENGEN (IF = 1A, VF = 0.55V) (2) (3) ISS = I1 + l2 x VOUT V2 Under the condition of V2 =VOUT + 1.0V Ver.2003-07-18 -5- NJU7261 Series ■ MEASUREMENT CIRCUIT 2 (4) (5) (6) -6- Ver.2003-07-18 NJU7261 Series ■ APPLICATION CIRCUIT Ver.2003-07-18 -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. -8- Ver.2003-07-18