NJU7262 Series PRELIMINARY C-MOS STEP-UP SWITCHING REGULATOR ■ GENERAL DESCRIPTION The NJU7262 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 operating clock is prepared on-chip or is available to input from external, and 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 (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 • External/Internal Clock Select Function • Stand-by Function • CR Oscillator On-chip • Diode On-chip • Package Outline DMP-8/SSOP-8/VSP-8 • C-MOS Technology ■ LINE-UP ■ PIN CONFIGURATION Output Voltage (V) 3.0 5.0 NJU7262VXX NJU7262RXX ■ EQUIVALENT CIRCUIT Package DMP-8 NJU7262M30 NJU7262M50 ■ TERMINAL DESCRIPTION No. Term. Name SSOP-8 NJU7262V30 NJU7262V50 I/O 1 2 3 CONT GND NC I POWER - 4 STB I 5 6 VIN SW POWER I 7 8 CLK VOUT I O Ver.2003-07-18 NJU7262MXX VSP-8 NJU7262R30 NJU7262R50 FUNCTION External Inductor Connect Terminal Power Source (GND) Non Connect Strobe Terminal : "H" or OPEN ···Normal Operation (step-up) "L" ···Standp-By Operation Power Source (+) External / Internal "H" or OPEN···Internal Oscillation Clock Select Terminal "L" ···External Clock Input (When "L" level is input, Internal oscillation is stopped) External Clock Input Terminal Step-up Output Terminal -1- NJU7262 Series ■ ABSOLUTE MAXIMUM RATINGS PARAMETER (Ta = 25ºC) SYMBOL Input Voltage RATINGS UNIT VIN 10 V VCONT GND-0.3 ≤ VCONT ≤ 10 V VI GND-0.3 ≤ VI ≤ VIN V VOUT GND-0.3 ≤ VOUT ≤ 10 V Power Dissipation PD (DMP-8) 300 (SSOP-8) 250 (VSP-8) 320 mW Operating Temperature Range Topr -25 to + 75 ºC Storage Temperature Range Tstg -40 to +125 ºC CONT Input Voltage STB, SW, CLK Input Voltage Output Voltage Note) Decoupling capacitor should be connected between VDD and VSS due to the stabilized operation for the voltage converter. ■ ELECTRICAL CHARACTERISTICS +3V 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 = Vsw = 1.5V VSTB = VCLK = 0V, NO LOAD - - 0.2 µA 4 Switching Current ISI VDS = 0.2V - 250 - mA - VIN = 1.5V 1.0 - - V 5 Operating Current STB Terminal Input Voltage H level VSTBH L level VSTBL VIN = 1.5V - - 0.4 V 5 SW Terminal Input Voltage H level VSWH VIN = 1.5V 1.0 - - V 6 L level VSWL VIN = 1.5V - - 0.4 V 6 CLK Terminal Input Voltage H level VCLKH VIN = 1.5V 1.0 - - V 7 STB Terminal Input Current L level H level L level VCLKL VIN = 1.5V - - 0.4 V 7 ISTBH1 VIN = 1.5V, VSTB = 1.0V - 15 30 µA 8 ISTBH2 VIN = 1.5V, VSTB = 1.5V - 0.1 - µA 8 ISTBL1 VIN = 1.5V, VSTB = 0.4V - 15 30 µA 8 ISTBL2 VIN = 1.5V, VSTB = 0V - 0.1 - µA 8 SW Terminal Input Current H level ISWH VIN = 1.5V, VSW = VIN - 0.1 - µA 8 L level ISWL VIN = 1.5V, VSW = 0V - 10 30 µA 8 CLK Terminal Input Current H level ICLKH VIN = 1.5V, VCLK = VIN - 10 30 µA 8 L level ICLKL VIN = 1.5V, VCLK = 0V - 0.1 - µA 8 -2- Ver.2003-07-18 NJU7262 Series +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 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 = VSW = 3.0V VSTB = VCLK = 0V, NO LOAD - - 0.2 µA 4 Switching Current ISI VDS = 0.2V - 250 - mA - STB Terminal Input Voltage H level VSTBH VIN = 3.0V 2.4 - - V 5 L level VSTBL VIN = 3.0V - - 0.4 V 5 SW Terminal Input Voltage H level VSWH VIN = 3.0V 2.4 - - V 6 L level VSWL VIN = 3.0V - - 0.4 V 6 CLK Terminal Input Voltage H level VCLKH VIN = 3.0V 2.4 - - V 7 L level VCLKL VIN = 3.0V - - 0.4 V 7 ISTBH1 VIN = 3.0V, VSTB = 2.4V - 50 100 µA 8 ISTBH2 VIN = 3.0V, VSTB = 3.0V - 0.1 - µA 8 STB Terminal Input Current H level L level ISTBL1 VIN = 3.0V, VSTB = 0.4V - 50 100 µA 8 ISTBL2 VIN = 3.0V, VSTB = 0V - 0.1 - µA 8 ISWH VIN = 3.0V, VSW = VIN - 0.1 - µA 8 SW Terminal Input Current H level L level ISWL VIN = 3.0V, VSW = 0V - 10 30 µA 8 CLK Terminal Input Current H level ICLKH VIN = 3.0V, VCLK = VIN - 10 30 µA 8 L level ICLKL VIN = 3.0V, VCLK = 0V - 0.1 - µA 8 Ver.2003-07-18 -3- NJU7262 Series ■ MEASUREMENT CIRCUIT (1) External Diode Type : "D1NS4" provided by SHINDENGEN (IF = 1A, VF = 0.55V) (2) (3) ISS = I1 + l2 x -4- VOUT VOUT + 1 Ver.2003-07-18 NJU7262 Series (4) (5) (6) Ver.2003-07-18 -5- NJU7262 Series (7) (8) ■ APPLICATION CIRCUIT [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. -6- Ver.2003-07-18