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| NJM2374A NJM2374A PWM 1.5A DC/DC IC NJM2374AD NJM2374AM NJM2374AE (2.5V 40V) (2.5V 48V) (100Hz 100kHz) (1.5A max.) NJM2374AV NJM2374AE PWM DIP8, DMP8, EMP8, SSOP14 1 8 2 7 3 6 1.CS 2.ES 3.CT 4.GND 5.IN+ 6.V+ 7.SI 8.CD 4 5 NJM2374AD NJM2374AM NJM2374AE 1 2 3 4 5 6 7 14 13 12 11 10 9 8 1.CS 2.NC 3.ES 4.NC 5.CT 6.NC 7.GND 8.IN+ 9.NC 10.V+ 11.NC 12.SI 13.NC 14.CD NJM2374AV Ver 4.2 - 1 - NJM2374A CS 1 Q PWM 1.5A R 160 S 8 CD ES 2 ON 9:1 OSC Ipk Sense Vth=300mV 7 SI CT 3 PWM COMP 6 V+ Vref 1.25V 2% GND 4 ERR.AMP 5 IN+ (DIP8, DMP8, EMP8: PACKAGE) CS 1 Q PWM 1.5A R 160 S 14 CD NC 2 13 NC ES 3 ON Vth=300mV 12 SI NC 4 9:1 OSC Ipk Sense 11 NC CT 5 PWM COMP 10 V+ NC 6 Vref 1.25V 2% 9 NC GND 7 ERR.AMP 8 IN+ (SSOP14: PACKAGE) -2- NJM2374A (Ta=25 ) V+ ISW VSW VIR 40 (NJM2374AE: 48V) 1.5 40 (NJM2374AE: 48V) -0.3 40 (NJM2374AE: -0.3 48V) (DIP8) 875 (DMP8) 750 (EMP8) 1,000 (SSOP14) 375 -40 +85 -50 +150 V A V V PD Topr Tstg DMP8, EMP8 6V mW Topr=-40 1200 1000 PD (mW) NJM2374AE +85 ,Tj= +150 NJM2374AD 800 600 NJM2374AM 400 NJM2374AV 200 0 25 50 Ta ( ) 75 100 SSOP -3- NJM2374A (V+=5V, Ta=25 ) ICC1 CT=1nF, SI=V+, IN+ Vth, ES=GND V+=48V, CT=1nF, SI=V+, IN+ Vth, ES=GND 12 110 SI=V Ichg=Idis (CS=CD),ISW =0.7A ISW =0.7A,Ic(driver)=50mA (Forced 14) ISW =0.7A,VCE=5.0V VCE=40V (NJM2374AE: VCE=48V) IN+=0V 35 1.225 + 2.8 3.4 20 180 0.5 9 300 1.0 0.5 160 120 10 1.250 40 4.0 4.5 30 300 mA mA A A VP-P (NJM2374AE ) ICC2 Ichg Idis VOSC Iratio Vipk Vsat1 Vsat2 Rbias hFE IC(Off) Vth IIB 250 350 1.3 0.7 mV V V 1.275 400 nA V nA High Voltage Detect Current-Limit Active Point HIGH OSC FF LOW OFF ON -4- NJM2374A 1000 f OSC (kHz) (V+=5V,SI=V+,Pin5=GND,Ta=25 ) 1000 ON/OFF (V+=5V,SI=V+,Pin5=GND,Ta=25 ) ON/OFF tON / t OFF ( S) 100 100 tON 10 10 tOFF 1 100 1000 CT (pF) 10000 1 100 1000 CT (pF) 10000 2 Vsat1 (V) 1.5 1 0.5 0 0 1 (V =5V,CS=CD,Ta=25 ) + 2 (V+=5V,Ic(driver)=50mA, 2 Vsat2 (V) 1.5 1 0.5 0 14,Ta=25 ) 0.5 1 1.5 IC (A) 2 0 0.5 1 1.5 IC (A) 2 4 I CC (mA) 3 2 1 0 (CT=1nF,SI=V+,IN+>Vth,ES=GND,Ta=25 ) 0 5 10 15 20 25 V+ (V) 30 35 40 -5- NJM2374A (V+=5V) Vth (V) 1.3 1.28 1.26 1.24 1.22 -50 -25 0 25 50 75 100 125 150 Ta ( ) I ratio 10 9 8 7 6 -50 -25 0 (V+=5V,SI=V+) 25 50 75 100 125 150 Ta ( ) (V+=5V,CS=CD,ISW =0.7A) 1.2 Vsat1 (V) 0.8 Vsat2 (V) 0.6 0.4 0.2 (V+=5V,ISW =0.7A,Ic(driver)=50mA, 14) 1.1 1 0.9 0.8 0.7 0.6 -50 -25 0 25 50 75 100 125 150 Ta ( ) 0 -50 -25 0 25 50 75 100 125 150 Ta ( ) 5 I CC (mA) 4 3 2 1 0 (V+=5V,CT=1nF,SI=V+,IN+>Vth,ES=GND) -50 -25 0 25 50 75 100 125 150 Ta ( ) -6- NJM2374A VIN=25V RSC 0.22 L1 220 H 8 7 1 2 VOUT=5.0V NJM2374A 6 4 CIN 100 F CT 470pF 3 D1 5 R2 3.6k R1 1.2k COUT 470 F 6V VIN=14V RSC 0.22 L1 180 H D1 VOUT=30V RC 180 R2 46k 1 2 COUT 150 F 8 7 NJM2374A 6 4 CIN 100 F 3 CT 1500pF R1 2k 5 VIN=5V RSC 0.22 D1 8 7 1 2 VOUT=-12V NJM2374A 6 4 CIN 100 F CT 1300pF 3 L1 90 H 5 R2 953 R1 8.2k COUT 1000 F D1 SSOP (SBD) -7- NJM2374A VIN=20V RSC 0.05 RBE 75 RBC 300 2SA1010 L1 33 H 8 7 1 2 VOUT=10V NJM2374A 6 4 CIN 300 F CT 330pF 3 D1 5 R2 70k R1 10k COUT 300 F VIN=5V RSC 0.075 L1 22 H D1 VOUT=7V RC2 680 RC1 100 R2 46k 1 2 2SC3255 COUT 940 F 8 7 NJM2374A 6 4 CIN 940 F CT 330pF 3 RBE 220 R1 10k 5 D1 (SBD) -8- |
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