NJM2360M-TE1

NJM2360 DC/DC CONVERTER CONTROL IC ■ GENERAL DESCRIPTION The NJM2360 is a DC to DC converter control IC. Due to the internalization of a high current output switch, 1.5A switching operations are available. The NJM2360 is designed to be incorporated in step-up, step-down and inverting applications with a minimum number of external components. Output current is limited by an external resistor. ■ PACKAGE OUTLINE NJM2360D NJM2360M ■ FEATURES • Output Switch Current 1.5A(MAX) • Operating Voltage 2.5V* to 40V • Internal Over Current Limit Circuit • Supply Voltage V+ 2.5V* to 40V • Output Voltage VOR 1.25V to 40V • Oscillator Frequency fOSC 100Hz to 100kHz • Package Outline DIP8, DMP8 *Ta =25°C. At low temperature, the minimum voltage is 3.0V. ■ PIN CONFIGURATION NJM2360D NJM2360M ■ BLOCK DIAGRAM Ver.2007-06-08 -1- NJM2360 ■ ABSOLUTE MAXIMUM RATINGS PARAMETER (Ta = 25ºC) SYMBOL RATINGS UNIT Supply Voltage V+ 40 V Comparator Input Voltage Range VIR -0.3 to V+ V Power Dissipation PD (DIP8) 700 (DMP8) 600 Switch Current ISW 1.5 A Operating Temperature Range Topr -40 to + 85 ºC Storage Temperature Range Tstg -40 to +125 ºC (note1) mW mW (note 1) At on PC board ■ ELECTRICAL CHARACTERISTICS ● DC Characteristics (V+ = 5V, Ta = 25ºC) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT - 2.4 3.5 mA ICC + 5V ≤ V ≤ 40V, CT = 0.001µF + SI = V , INVIN > Vth, ES = GND Ichg 5V ≤ V+ ≤ 40V 20 35 50 µA Discharge Current Idischg + 150 200 250 µA Voltage Swing VOSC - 0.5 - VP-P - 6 - - 250 300 350 mV Operating Current Oscillator Charge Current 5V ≤ V ≤ 40V + Discharge to Charge Current Ratio Idischg/Ichg SI = V Peak Current Sense Voltage VIPK(sense) Ichg = Idischg Saturation Voltage 1 VCE(sat) 1 Darlington Connection (CS = CD) ISW = 1.0A - 1.0 1.3 V Saturation Voltage 2 VCE(sat) 2 ISW = 1.0A, IC(driver) = 50mA (Forced β ･=･ 20) - 0.5 0.7 V 35 120 - - - 10 - nA 1.18 1.25 1.32 V - 40 400 nA Output Switch (Note 2) DC Current Gain hFE ISW = 1.0A, VCE = 5.0V Collector Off-State Current IC(off) VCE = 40V Comparator Threshold Voltage Vth Input Bias Current IIB VIN = 0V Note 2 : Output switch tests are performed under pulsed conditions to minimize power dissipation. -2- Ver.2007-06-08 NJM2360 ■ TYPICAL APPLICATION 1. Step-Up Converter *D1 : SBD (EK14) 2. Step-Down Converter *D1 : SBD (EK14) Ver.2007-06-08 -3- NJM2360 ■ TYPICAL APPLICATIONS 3. Step-Up Converter (High Current) 4. Step-Down Converter (High Current) 5. Inverting Converter *D1 : SBD (EK14) -4- Ver.2007-06-08 NJM2360 Fig. 1 Block Diagram Fig. 2 Timing Chart ■ POWER DISSIPATION VS. TEMPERATURE Ver.2007-06-08 -5- NJM2360 ■ TYPICAL CHARACTERISTICS Oscillator Frequency vs. Timing Capacitor Switching Time vs. Timing Capacitor Operating Current vs. Operating Voltage Switch Saturatin Voltage 2 vs. Collector Current (β･=･20) Switch Saturation Voltage 1 vs. Collector Current (Darlington) Saturation Voltage 1 vs. Temperature -6- Ver.2007-06-08 NJM2360 ■ TYPICAL CHARACTERISTICS Saturation Voltage 2 vs. Temperature Operating Current vs. Temperature Discharge to Charge Current Ratio vs. Temperature Threshold Voltage vs. Temperature Ver.2007-06-08 -7- NJM2360 ■ TYPICAL CHARACTERISTICS (Application) 1. Step-Up Converter Output Voltage vs. Input Voltage Output Voltage vs. Output Current 2. Step-Down Converter Output Voltage vs. Input Voltage Output Voltage vs. Output Current [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.2007-06-08