LTM4700 (Rev 0) - Analog Devices

1 8390fa 1 LT8390 60V 4 - 4 VIN VOUT 98% VIN 4V 60V 1V VOUT 60V 3% ( ) EMI PMOS MOSFET 150khz 650kHz VOUT VIN 28 TSSOP ( ) 28 QFN (4mm 5mm) LT 8390 4 - DC/DC - / - 150khz 650kHz 15% EMI LT8390 4V 60V 0V 60V LT8390 LT8390 LT LTC LTM Linear Technology Linear ADI 98% 48W (12V 4A)

2 - VIN LT8390 8390fa 2 1 VIN EN/UVLO VOUT ISP ISN .. 60V (ISP-ISN) .. -1V 1V BST1 BST2 .. 66V SW1 SW2 LSP LSN .. -6V 60V INTVCC (BST1-SW1) (BST2-SW2) .. 6V (BST1-LSP) (BST1-LSN) .. 6V FB LOADEN SYNC/SPRD CTRL PGOOD .. -65 C 150 C .. 6V ( 2 3) LT8390E .. -40 C 125 C LT8390I .. -40 C 125 C LT8390H .. -40 C 150 C #orderinfo * LT8390 EFE#PBF LT8390 EFE#TRPBF LT8390FE 28 TSSOP -40 C 125 C LT8390 IFE#PBF LT8390 IFE#TRPBF LT8390FE 28 TSSOP -40 C 125 C LT8390 HFE#PBF LT8390 HFE#TRPBF LT8390FE 28 TSSOP -40 C 125 C LT8390 EUFD#PBF LT8390 EUFD#TRPBF 8390 28 (4mm 5mm) QFN -40 C 125 C LT8390 IUFD#PBF LT8390 IUFD#TRPBF 8390 28 (4mm 5mm) QFN -40 C 125 C LT8390 HUFD#PBF LT8390 HUFD#TRPBF 8390 28 (4mm 5mm)

3 QFN -40 C 125 C LTC * 500 #TRMPBF LT8390 8390fa 3 TA = 25 C 2 VIN = 12V VEN/UVLO = VIN 4 60 V VIN VEN/UVLO = VEN/UVLO = 1 270 2 A A mA VOUT 0 60 V VOUT VEN/UVLO = VOUT = 12V VEN/UVLO = VOUT = 12V VOUT = 12V 20 40 60 A A A INTVCC IINTVCC = 20mA V INTVCC IINTVCC = 0mA 80mA 1 4 % INTVCC IINTVCC = 20mA VIN = 6V 60V 1 4 % INTVCC VINTVCC = 80 110 160 mA INTVCC (VIN INTVCC)

4 IINTVCC = 20mA VIN = 4V 160 mV INTVCC V INTVCC V VREF IVREF = 100 A V VREF IVREF = 0mA 1mA 1 % VREF IVREF = 100 A VIN = 4V 60V % VREF VREF = 2 mA VREF V VREF 50 mV / EN/UVLO V EN/UVLO V EN/UVLO 13 mV EN/UVLO VEN/UVLO = VEN/UVLO = VEN/UVLO = 0 0 A A A CTRL VCTRL = 0 20 50 nA CTRL 285 300 315 mV CTRL 25 mV LOADEN V LOADEN 220 mV LOADTG VOUT VLOADEN = 5V 3 V LOADTG V(VOUT-LOADTG) VOUT = 12V 5 V LOADTG V(VOUT-LOADTG)

5 VOUT = 12V 0 V LOADEN LOADTG LOADEN LOADTG CLOADTG = VOUT 50% 50% CLOADTG = VOUT 50% 50% 90 40 ns ns LOADTG LOADTG CLOADTG = VOUT 10% 90% CLOADTG = VOUT 90% 10% 300 10 ns ns LT8390 8390fa 4 TA = 25 C 2 VIN = 12V VEN/UVLO = V(ISP-ISN) VCTRL = 2V VISP = 12V VCTRL = 2V VISP = 0V 97 97 100 100 103 103 mV mV 1/10 V(ISP-ISN) VCTRL = VISP = 12V VCTRL = VISP = 0V 8 8 10 10 12 12 mV mV ISMON VISMON V(ISP-ISN) = 100mV VISP = 12V/0V V(ISP-ISN) = 10mV VISP = 12V/0V V(ISP-ISN)

6 = 0mV VISP = 12V/0V V V V ISP/ISN 0 60 V ISP/ISN VISP = VISN V ISP/ISN VISP = VISN V ISP VLOADEN = 5V VISP = VISN = 12V VLOADEN = 5V VISP = VISN = 0V VEN/UVLO = 0V VISP = VISN = 12V 0V 23 10 0 A A A ISN VLOADEN = 5V VISP = VISN = 12V VLOADEN = 5V VISP = VISN = 0V VEN/UVLO = 0V VISP = VISN = 12V 0V 23 10 0 A A A ISP/ISN gm 2000 s FB VC = V FB VIN = 4V 60V % FB % FB gm 660 S FB FB 10 40 nA VC 10 M VC VC = VLOADEN = 0V 10 0 10 nA V(LSP-LSN) VFB = VFB = 35 40 50 50 65 60 mV mV V(LSP-LSN) VFB = VFB = 1 1 mV mV LSP VLSP = VLSN = 12V 60 A LSN VLSP = VLSN = 12V 60 A FB (VFB) V FB 35 50 65 mV FB (VFB) V FB 35 50 65 mV ISP/ISN V(ISP-ISN)

7 VISP = 12V 750 mV PGOOD VFB 8 10 12 % PGOOD VFB 12 10 8 % PGOOD 100 200 SS VEN/UVLO = 100 200 SS VFB = VSS = 0V A SS VFB = VSS = 2V A LT8390 8390fa 5 TA = 25 C 2 VIN = 12V VEN/UVLO = SS V SS V RT RT = 100k V VSYNC/SPRD = 0V RT = 226k VSYNC/SPRD = 0V RT = 100k VSYNC/SPRD = 0V RT = 190 380 570 200 400 600 210 420 630 kHz kHz kHz SYNC 150 650 kHz SYNC/SPRD VSYNC/SPRD = 5V 0 A SYNC/SPRD V VSYNC/SPRD = 5V % VSYNC/SPRD = 5V % - (VIN/VOUT) - (VIN/VOUT) - (VIN/VOUT) - (VIN/VOUT) - - (VIN/VOUT) - - (VIN/VOUT) NMOS TG1 TG2 V(BST-SW)

8 = 5V BG1 BG2 VINTVCC = 5V TG1 TG2 TG1 TG2 CL = 10% 90% CL = 90% 10% 25 20 ns ns BG1 BG2 BG1 BG2 CL = 10% 90% CL = 90% 10% 25 20 ns ns TG BG CL = 60 ns BG TG CL = 60 ns TG1 - 10 % TG1 - 95 % - TG1 - 85 % - BG2 - 15 % BG2 - 10 % BG2 - 95 % 1 2 LT8390E 0 C 125 C -40 C 125 C LT8390I -40 C 125 C LT8390H -40 C 150 C 125 C 3 LT8390 150 C LT8390 8390fa 6 TA = 25 C ( ) ( - ) ( ) ( ) ( - ) ( )

9 VOUT IOUT (CV/CC) VIN VIN LT8390 8390fa 7 TA = 25 C INTVCC INTVCC VIN INTVCC UVLO VREF VREF VIN VREF UVLO EN/UVLO EN/UVLO CTRL LT8390 8390fa 8 TA = 25 C V(ISP-ISN) VCTRL V(ISP-ISN) VISP V(ISP-ISN) V(ISP-ISN) VFB FB FB FB PGOOD LT8390 8390fa 9 TA = 25 C ISMON V(ISP-ISN) SS LT8390 8390fa 10 BG1 INTVCC N MOSFET BST1 BST1 INTVCC SW1 BST1 INTVCC (VIN + INTVCC)

10 SW1 SW1 VIN TG1 SW1 BST1 N MOSFET