NJU7601 PWM/PFM / IC NJU7601 IC PWM/PFM MOS-FET NJU7601M PWM/PFM NJU7601RB1 NJU760x** 2.2V 8V 300kHz 1MHz 90% typ. 800µA typ. 16ms typ. PWM/PFM NJU7601 PWM/PFM NJU7600 PWM C-MOS NJU7601M : DMP8 NJU7601RB1 : TVSP8 1 8 2 7 3 6 4 5 NJU7601M NJU7601RB1 Ver.2006-04-15 ** 1. V+ 2. FB 3. IN4. SCP 5. DTC 6. RT 7. GND 8. OUT -1- NJU7601 V+ FB 0.8V ER AMP IN- 0.2V 1V Vref PWM/PFM Control Soft Start UVLO Latch PWM Buffer 2µA SCP OUT SCP OSC 2kΩ 0.5V 0.5 1V RT 0.74V A 1V DTC RT GND RT DTC 0.5/RT MaxDuty 90%(@700kHz) MaxDuty (VDTC 0.2)/0.6 DTC SCP UVLO SCP -2- GND Ver.2006-04-15 NJU7601 (Ta=25°C) V+ IO PD TOPR TSTG +9 ±50 DMP8 :300 TVSP8 :320 -40 +85 -40 +125 V mA mW °C °C (Ta=25°C) V+ RT fOSC 2.2 30 300 47 700 8 120 1,000 V kΩ kHz (V+=3.3V, RT=47kΩ, Ta=25°C) ON OFF RT Ver.2006-04-15 VT_ON VT_OFF VHYS V+= L V+= H H L TSS VT_ON Duty=80% 1.9 1.8 60 2.0 1.9 100 2.1 2.0 – V V mV 8 16 24 ms VT_PC ICHG FB VSCP=0V 0.95 1.5 1.00 2 1.05 2.5 V µA VT_LA SCP 0.95 1.00 1.05 V VT_LAOFF SCP 0.2 0.45 0.70 V V+=2.2V 8V Ta=-40°C +85°C -5% 630 – – 0.5 700 1 3 +5% 770 – – V kHz % % VRT fOSC fDV fDT -3- NJU7601 (V+=3.3V, RT=47kΩ, Ta=25°C) -1.5% -0.1 – – 25 4 0.10 1.00 – 80 1 55 9 0.16 +1.5% 0.1 – – 95 16 0.22 V µA dB MHz mA mA mA 0.29 0.44 85 40 0.35 0.5 90 50 0.41 0.56 95 60 V V % % 17 25 33 % IO=-20mA IO=+20mA – – 10 5 20 10 Ω Ω RL= – 800 1200 µA VB IB AV GB IOM+_1 IOM+_2 IOM- VFB=1V , VIN-=0.9V VFB=1V , VIN-=0.9V , V+=2.2V VFB=1V , VIN-=1.1V PWM VT_0 VT_50 MAXDUTY_1 MAXDUTY_2 PWM/PFM H L ON ON PFMDUTY ROH ROL IDD -4- Duty=PFMDUTY Duty=50% VFB=0.9V VFB=0.9V, RDTC=47kΩ Ver.2006-04-15 NJU7601 SBD L V + VOUT CIN R2 NJU7601 C + 1 V OUT 8 2 FB GND 7 3 IN- RT 6 4 SCP DTC 5 CNF COUT FET R1 RT RNF CSCP RDTC CS T + V SBD VOUT CIN NJU7601 C CNF RNF 1 V 2 + FET OUT 8 FB GND 7 3 IN- RT 6 4 SCP DTC 5 COUT R1 RT CSCP Ver.2006-04-15 R2 RDTC CS -5- NJU7601 o (V+=3.3V, Ta=25 C) o (V+=3.3V, Ta=25 C) 100 95 UTY_1 (%) fOSC (kHz) 1000 AX M D 90 100 10 85 80 100 100 RT (kΩ) 1000 fOSC (kHz) RDTC o o (R =47kΩ, Ta=25 C) fosc (kHz) 740 (V+=3.3V, R =47kΩ, Ta=25 C) 100 T T 80 UTY (%) 720 AX M D 700 680 660 60 40 20 0 0 2 4 6 + V (V) 8 10 0 o (Ta=25 C) 1.004 20 40 (R =47kΩ, R = T 1400 L 60 80 100 RDTC (kΩ) o , Ta=25 C) IDD (µA) VB (V) 1200 1.002 1 1000 800 600 400 0.998 200 0.996 -6- 0 2 4 6 + V (V) 8 10 0 0 2 4 6 + V (V) 8 10 Ver.2006-04-15 NJU7601 + Gain 90 15 45 V =1.95V 10 L ON 4 V+=8V 2 -25 0 25 ON (Io=+20mA) 50 75 o Ta ( C) 12 V+=1.95V 10 V+=3.3V 6 4 2 0 -50 100 125 (VFB=1V, VIN-=0.9V) V+=8V -25 V+=8V 100 V+=3.3V 0 25 50 75 o Ta ( C) 100 125 (VFB=1V, VIN-=1.1V) 0.2 IOM- (mA) 1000 0 10000 8 V+=3.3V 6 H ON 100 1000 f (kHz) 14 12 IOM+ (mA) 10 ROL (Ω) ROH (Ω) 1 + 8 135 30 H ON (Io=-20mA) 14 180 Φ (deg) Av (dB) Phase 45 0 0.1 0 -50 o (V =3.3V, Gain=40dB, Ta=25 C) 60 0.15 V+=1.95V, 3.3V, 8V 0.1 10 V+=1.95V 1 -50 Ver.2006-04-15 -25 0 25 50 75 o Ta ( C) 100 125 0.05 0 -50 -25 0 25 50 75 o Ta ( C) 100 125 -7- NJU7601 (V+=3.3V) Tss (ms) 24 (V+=3.3V) 1.01 22 VB (V) 20 18 1.005 16 1 14 12 0.995 10 8 -50 -25 0 25 50 75 o Ta ( C) 0.99 -50 100 125 (V+=3.3V, R =47kΩ) 760 25 50 75 o Ta ( C) 100 125 (V+=3.3V) 90 MAX DUTY_1 MAXDUTY (%) fOSC (kHz) 0 100 T 740 720 80 700 70 680 60 660 640 -50 -25 MAX DUTY_2 50 -25 0 25 50 75 o Ta ( C) 40 -50 100 125 1000 2.02 800 0 25 50 75 o Ta ( C) 100 125 (V+=3.3V, R =47kΩ) T V 1.98 IDD (µA) (V) 2.06 -25 T_ON 1.94 400 VT_OFF 1.9 1.86 -50 -8- 600 -25 0 25 50 75 o Ta ( C) 200 100 125 0 -50 -25 0 25 50 75 o Ta ( C) 100 125 Ver.2006-04-15 NJU7601 MEMO Ver.2006-04-15 -9-