NJM2393 PWM NJM2393 IC DC/DC IC DC/DC 100% 1.5A NJM2393D NJM2393M 3.0V 40V 1kHz 150kHz Vth 1.25V 1% 1.5A max. 100% PWM NJM2393D : DIP8 NJM2393M : DMP8 1 8 2 7 3 6 4 5 NJM2393D NJM2393M 1. CS 2. ES 3. CT 4. GND 5. IN6. V+ 7. SI 8. CD CS 1 8 CD 7 SI 6 V+ 5 IN- R Q PWM Logic 1.5A S 160Ω ES 2 OSC Block MAX Duty =100% Ipk Sense 300mV CT 3 Error AMP PWM COMP Vref 1.25V GND 4 Buffer Ver.2009-06-11 -1- NJM2393 (Ta=25°C) V+ VIR VC(driver) VSW IC(driver) ISW 40 -0.3 40( ) 40 40 100 1.5 DIP8 875 DMP8 580 (*1) 750 (*2) -40 +85 -50 +150 PD Topr Tstg ( ): (*1): (*2): 40V 114.3mm 76.2mm 1.6mm(2 114.3mm 76.2mm 1.6mm(4 FR-4) FR-4) V V V V mA A mW °C °C EIA/JEDEC EIA/JEDEC (Topr=-40~+85oC, Tj= ∼150oC) 1000 PD (mW) DIP8 800 600 DMP8 4 2 400 200 0 0 25 50 75 Ta ( C) 100 o -2- Ver.2009-06-11 NJM2393 (V+=5V, Ta=25°C) fOSC Ichg Idis VOSC IN-= Vth-5mV CT=1nF Vsat1 2 Vsat2 3 Vsat3 27 18 180 0.5 36 27 300 kHz µA µA VP-P 250 300 350 mV 1.0 1.3 V 0.5 0.7 V 0.3 V CT=1nF Vipk 1 18 11 110 (CS=CD), ISW=0.7A ISW=0.7A, IC(driver)=50mA (Forced 14) ISW=3mA, IC(driver)=5mA Rbias hFE ISW=0.7A,VCE=5.0V IC(Off) VCE=40V MAXDUTY IN-=0V Ver.2009-06-11 Ω 160 Vth IIB IN-=Vth ICC CT=1nF, SI=V+, IN- Vth, ES=GND 35 120 0.01 1 µA % 1.250 100 1.2625 200 V nA 2.8 4.0 mA 100 1.2375 -3- NJM2393 VIN RSC L1 7 8 1 2 C1 NJM2393 6 4 VOUT 5 3 R2 CIN CT R1 D1 RSC COUT RBE VIN RBC L1 7 1 8 C1 NJM2393 6 4 VOUT 2 3 5 R2 CIN D1 CT F D1 R1 COUT (SBD) Error AMP OSC FF HIGH LOW ON OFF HIGH Ipk Sense LOW -4- Ver.2009-06-11 NJM2393 + (V) 100 o (V =5V, CS=CD, Ta=25 C) 1.4 1.2 V 1 OSC (kHz) (V+=5V, SI=V+, Pin 5=GND, Ta=25oC) 0.8 10 0.6 0.4 0.2 0 1 10 100 1000 10000 CT (pF) o 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 IC (A) + (V) 0.08 0.06 o (V =5V, Ic(driver)=5mA, Ta=25 C) 0.1 V 1.2 (V) 0 (V =5V, Ic(driver)=50mA,β≅14, Ta=25 C) + 1.4 100000 V 1 0.8 0.6 0.04 0.4 0.02 0.2 0 0 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 IC (A) 0 5 10 15 (mA) IC 20 INo (CT=1nF, SI=V+, IN->Vth, Es=GND, Ta=25 C) 4 (V =5V, Ta=25oC) + 400 ICC (mA) IIB (nA) 500 300 3 2 200 1 100 0 0 0 Ver.2009-06-11 0.2 0.4 0.6 0.8 IN- 1 1.2 1.4 1.6 (V) 0 10 20 30 40 + V (V) -5- (V+=5V) 1.28 1.27 1.26 1.25 (V+=5V, CS=CD, Isw=0.7A) 1.2 Vsat1 (V) Vth (V) NJM2393 1.1 1 0.9 1.24 1.23 0.8 1.22 0.7 1.21 1.2 -50 -25 25 50 0.6 0.2 0 25 50 75 100 125 150 o Ta ( C) (V+=5V, Isw=3mA, Ic(driver)=5mA) (V+=5V, Isw=0.7A, Ic(driver)=50mA,β≅14) 0.4 8 6 4 2 0 -50 -25 0 25 50 75 100 125 150 o Ta ( C) 0 -50 -25 360 340 320 300 0 25 50 75 100 125 150 o Ta ( C) (V+=5V, C =1nF, S =V+, IN->V Es=GND) (V+=5V) 5 ICC (mA) Vipk (mV) 0.6 -50 -25 75 100 125 150 Ta (oC) Vsat3 (mV) Vsat2 (V) 0.8 0 T I th, 4 3 2 280 1 260 240 -50 -25 -6- 0 25 50 75 100 125 150 Ta (oC) 0 -50 -25 0 25 50 75 100 125 150 Ta (oC) Ver.2009-06-11 NJM2393 MEMO Ver.2009-06-11 -7-