NJM2382 DIP14 DMP14 SSOP10 NJM2382D NJM2382M NJM2382V VTH50 VTHCS50 - Datasheet Archive

 

SWITCHING REGULATOR CONTROL IC FOR FLYBACK WITH CURRENT SENSE AMPLIFIER IGENERAL DESCRIPTION IPACKAGE OUTLINE The NJM2382 is a

 

NJM2382 NJM2382 SWITCHING REGULATOR CONTROL IC FOR FLYBACK WITH CURRENT SENSE AMPLIFIER IGENERAL DESCRIPTION IPACKAGE OUTLINE The NJM2382 NJM2382 is a low voltage operation switching regulator control IC. It features totem pole output directly driving external bipolar transistor and operates at high switching frequency which improves transient response. In addition, low power standby function is incorporated. It is suitable for LCD back light, and other portable applications. IFEATURES G PWM switching control G Operating Voltage (3.6 to 32V) G Wide Oscillator Range (5 to 350 kHz) G ON/OFF Circuit (High Active) G Current Sensing Amplifier G Soft-Start Function G UVLO(Under Voltage Lockouts) G Bipolar Technology G Package Outline DIP14 DIP14, DMP14 DMP14, SSOP10 SSOP10 NJM2382D NJM2382D NJM2382M NJM2382M NJM2382V NJM2382V IPIN CONFIGURATION 1 14 2 13 3 12 4 11 5 10 6 9 7 8 PIN FUNCTION 8.NC 1.NC 9. V+ 2.IN 1 3.IN-2 10.CS 11.CT 4.F.B 12.REF 5.GND 13.ON/OFF 6.OUT 14.NC 7.NC NJM2382D NJM2382D NJM2382M NJM2382M 1 10 2 9 3 8 4 7 5 6 NJM2382V NJM2382V PIN FUNCTION 6. V+ 1.IN-1 2.IN 2 7.CS 8.CT 3.F.B 9.REF 4.GND 10.ON/OFF 5.OUT Ver 1.3 - 1 - NJM2382 NJM2382 IBLOCK DIAGRAM NC ON/OFF REF CT CS V+ NC 14 13 12 11 10 9 8 ON/OFF "High" Active VREF CURRENT SENSE AMP OSC L.O U.V.LO 500 ER·AMP 0.52V PWM 1 2 3 4 5 6 7 NC IN-1 IN-2 F.B GND OUT NC (Package: DIP14 DIP14, DMP14 DMP14) IN+ REF 10 CT 9 CS V+ 8 7 6 VREF CURRENT SENSE AMP OSC L.O U.V.LO 500 ER·AMP 0.52V PWM 2 1 - IN 1 3 4 5 - F.B GND OUT IN 2 (Package: SSOP10 SSOP10) -2- NJM2382 NJM2382 IABSOLUTE MAXIMUM RATINGS (Ta=25°C) PARAMETER SYMBOL Input Voltage V+ Reference Output Current IOR Output Current IO Differential Input Voltage VID Common Mode Input Voltage VIC ON/OFF Control Voltage VON/OFF Power Dissipation PD Operating Temperature Range Storage Temperature Range MAXIMUM RATINGS 36 10 ±50 2.5 -0.3 2.5 -0.3 36 (note) (DIP 14) 700 (DMP 14) 300 (SSOP 10) 250 -40 +85 -50 +150 TOPR TSTG UNIT V mA mA V V V mW °C °C (note) When the supply voltage is less than 36V, the absolute maximum input voltage is equal to the supply voltage. IELECTRICAL CHARACTERISTICS (V+=6V,RT=33k,CT=1000pF,VON/OFF=3V,Ta=25°C) REFERENCE VOLTAGE BLOCK PARAMETER SYMBOL Output Voltage Line Regulation Load Regulation OSCILLATOR BLOCK PARAMETER Oscillation Frequency Oscillate Fluctuations1 (Line Fluctuations) Oscillate Fluctuations2 (Temp Fluctuations) VREF LINE LOAD IOR=1mA + V =3.6 32V, IOR=1mA IOR=0.1 5.0mA SYMBOL TEST CONDITION RT=33k, CT=1000pF MIN. TYP. MAX. UNIT 2.45 ­ ­ 2.50 6.8 5 2.55 20.7 30 V mV mV MIN. TYP. MAX. UNIT 105 1 125 ­ kHz % fOSC fdV V =3.6 32V 85 ­ fdT Ta=-40 85°C ­ 5 ­ % MIN. TYP. MAX. UNIT ­ ­ ­ ­ ­ ­ 7 ­ 100 ­ ­ ­ mV nA nA dB MHz V 1 V 200 µA CURRENT SENSE AMPLIFIER BLOCK PARAMETER SYMBOL Input Offset Voltage1 Input Offset Current1 Input Bias Current1 Open Loop Gain1 Gain Bandwidth Product1 Input Common Mode Voltage Ratio1 Maximum Output Voltage1 (F.B Pin) Maximum Source Current1 (F.B Pin) TEST CONDITION + TEST CONDITION VIO1 IIO1 IB1 A V1 GB1 VICM1 VOM-1 RNF=100k ­ 2 5 20 90 0.6 0 VREF-0.8 ­ IOM+1 VOM=0.5V 40 85 -3- NJM2382 NJM2382 IELECTRICAL CHARACTERISTICS (V+=6V,RT=33k,CT=1000pF,VON/OFF=3V,Ta=25°C) ERROR AMPLIFIER BLOCK PARAMETER SYMBOL Reference Voltage2 Input Bias Current2 Open Loop Gain2 Gain Bandwidth Product2 Maximum Output Voltage2 (F.B Pin) Maximum Source Current2 (F.B Pin) PWM COMPARATE BLOCK PARAMETER Input Threshold Voltage (F.B Pin) Input Threshold Voltage (F.B Pin) Maximum Duty Cycle VB2 IB2 A V2 GB2 VOM-2 RNF=100k IOM+2 VOM=0.5V SYMBOL (CS Pin) Input Threshold Voltage (CS Pin) Input Threshold Voltage (CS Pin) OUTPUT BLOCK PARAMETER H-Output Voltage (OUT Pin) L-Output Voltage (OUT Pin) Output Source Current (OUT Pin) -4- TYP. MAX. UNIT 0.51 ­ ­ ­ ­ 0.52 5 90 0.6 ­ 0.53 100 ­ ­ 1 V nA dB MHz V 40 85 200 µA MIN. TYP. MAX. UNIT duty·cycle=0% ­ 1.65 1.75 V VTH50 VTH50 duty·cycle=50% ­ 1.88 ­ V Current Sense Amp.=HIGH Error Amp.=HIGH ,CS Pin=1.2V 55 64 85 % TEST CONDITION MIN. TYP. MAX. UNIT CS Pin=1.8V ­ 250 650 nA VTHCS0 duty·cycle=0% ­ 0.25 0.35 V VTHCS50 VTHCS50 duty·cycle=50% ­ 0.52 ­ V MIN. TYP. MAX. UNIT ­ ­ 60 2.70 2.52 180 ­ ­ ­ V V mV MIN. TYP. MAX. UNIT 3.50 ­ 8 4.00 0.25 11 ­ 0.65 ­ V V mA M IBCS UNDER VOLTAGE LOCKOUT BLOCK PARAMETER SYMBOL ON Threshold Voltage OFF Threshold Voltage Hysteresis Voltage TEST CONDITION MIN. VTH0 SOFT START CIRCUIT BLOCK PARAMETER SYMBOL Input Bias Current TEST CONDITION TEST CONDITION VTHON VTHOFF VHYS SYMBOL VOH VOL ISOURCE TEST CONDITION RL=10k Output Sink Current=20mA OUT Pin=0V NJM2382 NJM2382 IELECTRICAL CHARACTERISTICS (V+=6V,RT=33k,CT=1000pF,VON/OFF=3V,Ta=25°C) ON/OFF BLOCK PARAMETER SYMBOL OFF Threshold Voltage (ON/OFF Pin) ON Threshold Voltage (ON/OFF Pin) Input Bias Current (ON/OFF Pin) MIN. TYP. MAX. UNIT VOFF ­ ­ 0.3 V VON 1.1 ­ ­ V ­ 100 120 µA MIN. TYP. MAX. UNIT ION/OFF TEST CONDITION VON/OFF=3V GENERAL CHARACTERISTICS PARAMETER SYMBOL Standby Current Latch Mode Threshold Voltage (CS Pin) Quiescent Current Average Quiescent Current TEST CONDITION ICCSTBY VTHLA Standby Mode, VON/OFF=0V ­ 1.2 12 1.5 20 1.8 µA V ICCLA ICCAV Latch Mode RL= , duty·cycle=50% ­ ­ 1.6 3.5 2.2 4.8 mA mA I TYPICAL APPLICATIONS V 330k ON/OFF CONTROL 4.7µF + 180k 1000pF 36k 2.50V 10 9 ON/OFF "High" Active 8 VREF CURRENT SENSE AMP 7 6 VOUT OSC L.O U.V.LO 500 0.52V 1 ER·AMP PWM 2 3 GND 4 5 (Package:SSOP10 SSOP10) -5- NJM2382 NJM2382 ITIPICAL CHARACTERISTICS H Output Voltage vs. Source Current (V+=6V,RT=33k,CT=1000pF, OUT Pin=0V,Ta=25°C) 1 L Output Voltage VOL (V) H Output Voltage VOH (V) 8 L Output Voltage vs. Sink Current (V+=6V,RT=33k,CT=1000pF,Ta=25°C) 7 6 5 4 3 2 1 0.8 0.6 0.4 0.2 0 0 0 2 4 6 8 10 0 12 10 20 30 40 50 60 Source Current ISOURCE (mA) Oscillator Frequency vs. Timing Resistor (V+=6V,Ta=25°C) Oscillator Frequency vs. Timing Capacitor (V+=6V,Ta=25°C) CT=470pF 100 100 CT=1000pF 10 1000 Oscillator Frequencey fOSC (kHz) Oscilltor Frequency f OSC (kHz) 1000 Sink Current ISINK (mA) RT=100k 1 1 10 100 1000 Timing Resistor RT (k) 10000 10 Reference Voltage vs. Operating Voltage (V+=6V,Ta=25°C) 2.52 2.51 2.5 2.49 2.48 100 1000 10000 Timing Capacitor CT (pF) 100000 Operating Current vs. Operating Voltage (Ta=25°C) 6 Operating Voltage ICC (mA) Reference Voltage VREF (V) RT=33k 10 1 5 4 ICCAV 3 2 ICCLA 1 0 0 10 20 30 + Operating Voltage V (V) -6- RT=10k 40 0 10 20 30 + Operating Voltage V (V) 40 NJM2382 NJM2382 Maximum Duty Cycle vs. Oscillator Frequency (V+=6V,Ta=25°C) 80 70 60 50 40 30 20 10 0 10 Duty Cycle (%) Maximum Duty Cycle M (%) ITIPICAL CHARACTERISTICS 100 Oscillator Frequency f OSC (kHz) 1000 Duty Cycle vs. CS Pin Voltage (V+=6V,Ta=25°C) 80 70 60 50 40 30 20 10 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 CS Pin Voltage VTHCS (V) -7- NJM2382 NJM2382 ITIPICAL CHARACTERISTICS 140 120 100 80 Reference Voltage vs. Temperature (V+=6V,IOR=1mA) 3 Reference Voltage VREF (V) Oscillator Frequency f OSC (kHz) 160 Oscillator Frequency vs. Temperature (V+=6V,RT=33k,CT=1000pF) 2.8 2.6 2.4 2.2 2 60 -50 -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) -50 -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) H Output Voltage vs. Temperature (V =6V,RL=10k,RT=33k,CT=1000pF) L Output Voltage vs. Trmperature (V =6V,ISINK=20mA,RT=33k,CT=1000pF) + 0.5 L Output Voltage V OL (V) H Output Voltage VOH (V) 10 + 8 6 4 2 0.4 0.3 0.2 0.1 0 0 5 -50 -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) Operating Current vs. Temperature (V+=6V,RT=33k,CT=1000pF) Standby Current vs. Temperature (Standby Mode,V+=6V,VON/OFF=0V) 4 3 ICCAV 2 ICCLA 1 0 40 30 20 10 0 -50 -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) -8- 50 Standby Current ICCSTBY (A) Operating Current ICC (mA) -50 -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) -50 -25 0 25 50 75 100 125 150 Ambient Temperature Ta (°C) NJM2382 NJM2382 MEMO [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. -9-