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| NJM2360 DC/DC CONVERTER CONTROL IC GENERAL DESCRIPTION The NJM 2360 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. FEATURES * Operating Voltage (2.5V to 40V) * Low Standby Current * Current Limiting * Output Switch Current to 1.5A * Supply Voltage V+ 2.5 to 40V * Output Voltage VOR 1.25 to 40V * Oscillator Frequency fOSC 100Hz to 100kHz * Package Outline DIP8, DMP8 * Bipolar Technology PIN CONFIGURATION PACKAGE OUTLINE NJM2360D NJM2360M NJM2360D NJM2360M BLOCK DIAGRAM Ver.2003-07-18 -1- NJM2360 ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Comparator Input Voltage Range Power Dissipation Switch Current Operating Temperature Range Storage Temperature Range SYMBOL V + (Ta = 25C) RATINGS 40 -0.3 to V + UNIT V V mW mW A C C VIR PD ISW Topr Tstg (DIP8) 700 (DMP8) 600 1.5 -40 to + 85 -40 to +125 (note1) (note 1) At on PC board ELECTRICAL CHARACTERISTICS DC Characteristics (V+ = 5V, Ta = 25C) PARAMETER Operating Current SYMBOL + TEST CONDITION 5V V 40V, CT = 0.001F + SI = V , INVIN > Vth, ES = GND MIN. - TYP. 2.4 MAX. 3.5 UNIT mA ICC Oscillator Charge Current Discharge Current Voltage Swing Discharge to Charge Current Ratio Peak Current Sense Voltage Ichg Idischg VOSC Idischg/Ichg VIPK(sense) SI = V + 5V V 40V 5V V 40V + + 20 150 250 35 200 0.5 6 300 50 250 350 A A VP-P mV Ichg = Idischg Output Switch (Note 2) Saturation Voltage 1 Saturation Voltage 2 DC Current Gain Collector Off-State Current VCE(sat) 1 VCE(sat) 2 hFE IC(off) Darlington Connection (CS = CD) ISW = 1.0A ISW = 1.0A, IC(driver) = 50mA (Forced 20) = ISW = 1.0A, VCE = 5.0V VCE = 40V 35 1.0 0.5 120 10 1.3 0.7 V V nA Comparator Threshold Voltage Input Bias Current Vth IIB VIN = 0V 1.18 1.25 40 1.32 400 V nA Note 2 : Output switch tests are performed under pulsed conditions to minimize power dissipation. -2- Ver.2003-07-18 NJM2360 TYPICAL APPLICATION 1. Step-Up Converter *D1 : SBD (EK14) 2. Step-Down Converter *D1 : SBD (EK14) Ver.2003-07-18 -3- NJM2360 TYPICAL APPLICATIONS 3. Step-Up Converter (High Current) 4. Step-Down Converter (High Current) 5. Inverting Converter *D1 : SBD (EK14) -4- Ver.2003-07-18 NJM2360 Fig. 1 Block Diagram Fig. 2 Timing Chart POWER DISSIPATION VS. TEMPERATURE Ver.2003-07-18 -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 ( 20) = Switch Saturation Voltage 1 vs. Collector Current (Darlington) Saturation Voltage 1 vs. Temperature -6- Ver.2003-07-18 NJM2360 TYPICAL CHARACTERISTICS Saturation Voltage 2 vs. Temperature Operating Current vs. Temperature Discharge to Charge Current Ratio vs. Temperature Threshold Voltage vs. Temperature Ver.2003-07-18 -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.2003-07-18 |
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