Datasheet LTC1735 (Analog Devices) - 2
| Fabricante | Analog Devices |
| Descripción | High Efficiency Synchronous Step-Down Switching Regulator |
| Páginas / Página | 32 / 2 — ABSOLUTE AXI U. RATI GS (Note 1). PACKAGE/ORDER I FOR ATIO. ELECTRICAL … |
| Formato / tamaño de archivo | PDF / 415 Kb |
| Idioma del documento | Inglés |
ABSOLUTE AXI U. RATI GS (Note 1). PACKAGE/ORDER I FOR ATIO. ELECTRICAL CHARACTERISTICS The
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- LTC1735CF#PBF LTC1735CF#PBF LTC1735CF#TRPBF LTC1735CF#TRPBF LTC1735CGN#PBF LTC1735CGN#PBF LTC1735CGN#TRPBF LTC1735CGN#TRPBF LTC1735CS#PBF LTC1735CS#PBF LTC1735CS#TRPBF LTC1735CS#TRPBF LTC1735EGN#PBF LTC1735EGN#PBF LTC1735EGN#TRPBF LTC1735EGN#TRPBF LTC1735IF#PBF LTC1735IF#PBF LTC1735IF#TRPBF LTC1735IF#TRPBF LTC1735IGN#PBF LTC1735IGN#PBF LTC1735IGN#TRPBF LTC1735IGN#TRPBF LTC1735IS#PBF LTC1735IS#PBF LTC1735IS#TRPBF LTC1735IS#TRPBF
Versión de texto del documento
LTC1735
W W W U ABSOLUTE AXI U RATI GS (Note 1)
Input Supply Voltage (VIN)...36V to –0.3V Peak Driver Output Current <10µs (TG, BG) .. 3A Topside Driver Supply Voltage (BOOST)..42V to – 0.3V INTVCC Output Current ... 50mA Switch Voltage (SW) ..36V to – 5V Operating Ambient Temperature Range EXTVCC Voltage ...7V to –0.3V LTC1735C ... 0°C to 85°C Boosted Driver Voltage (BOOST – SW) ...7V to – 0.3V LTC1735I/LTC1735E (Note 8) .. – 40°C to 85°C SENSE+, SENSE– Voltages .. 1.1 (INTVCC) to –0.3V Junction Temperature (Note 2) ... 125°C FCB Voltage ..(INTVCC + 0.3V) to –0.3V Storage Temperature Range ... – 65°C to 150°C ITH, VOSENSE Voltages ...2.7V to –0.3V Lead Temperature (Soldering, 10 sec).. 300°C RUN/SS, PGOOD (LTC1735F Only) Voltages ...7V to – 0.3V
U W U PACKAGE/ORDER I FOR ATIO
ORDER PART TOP VIEW ORDER PART TOP VIEW NUMBER NUMBER NC 1 20 NC C 1 16 OSC TG C 2 19 TG RUN/SS 2 15 BOOST LTC1735CGN OSC LTC1735CF RUN/SS 3 18 BOOST I 3 14 TH SW LTC1735CS LTC1735IF I 4 17 SW FCB 4 13 V TH IN LTC1735IGN FCB 5 16 V SGND 5 12 IN INTVCC LTC1735IS SGND 6 15 INTV V 6 11 CC OSENSE BG LTC1735EGN V 7 14 BG SENSE– 7 10 PGND OSENSE PGOOD 8 13 PGND SENSE+ 8 9 EXTVCC GN PART MARKING SENSE– 9 12 EXTVCC GN PACKAGE S PACKAGE 1735 SENSE+ 10 11 NC 16-LEAD NARROW 16-LEAD PLASTIC SO PLASTIC SSOP 1735I F PACKAGE T 20-LEAD PLASTIC TSSOP JMAX = 125°C, θJA = 130°C/W (GN) 1735E TJMAX = 125°C, θJA = 110°C/W (S) TJMAX = 125°C, θJA = 110°C/W Consult LTC marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 15V, VRUN/SS = 5V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loop
IVOSENSE Feedback Current (Note 3) – 4 – 25 nA VOSENSE Feedback Voltage (Note 3) ● 0.792 0.8 0.808 V ∆VLINEREG Reference Voltage Line Regulation VIN = 3.6V to 30V (Note 3) 0.001 0.02 %/V ∆VLOADREG Output Voltage Load Regulation (Note 3) Measured in Servo Loop; VITH = 0.7V ● 0.1 0.3 % Measured in Servo Loop; VITH = 2V ● – 0.1 – 0.3 % DF Max Maximum Duty Factor In Dropout 98 99.4 % gm Transconductance Amplifier gm 1.3 mmho VFCB Forced Continuous Threshold ● 0.76 0.8 0.84 V IFCB Forced Continuous Current VFCB = 0.85V – 0.17 – 0.3 µA 1735fc 2
W W W U ABSOLUTE AXI U RATI GS (Note 1)
Input Supply Voltage (VIN)...36V to –0.3V Peak Driver Output Current <10µs (TG, BG) .. 3A Topside Driver Supply Voltage (BOOST)..42V to – 0.3V INTVCC Output Current ... 50mA Switch Voltage (SW) ..36V to – 5V Operating Ambient Temperature Range EXTVCC Voltage ...7V to –0.3V LTC1735C ... 0°C to 85°C Boosted Driver Voltage (BOOST – SW) ...7V to – 0.3V LTC1735I/LTC1735E (Note 8) .. – 40°C to 85°C SENSE+, SENSE– Voltages .. 1.1 (INTVCC) to –0.3V Junction Temperature (Note 2) ... 125°C FCB Voltage ..(INTVCC + 0.3V) to –0.3V Storage Temperature Range ... – 65°C to 150°C ITH, VOSENSE Voltages ...2.7V to –0.3V Lead Temperature (Soldering, 10 sec).. 300°C RUN/SS, PGOOD (LTC1735F Only) Voltages ...7V to – 0.3V
U W U PACKAGE/ORDER I FOR ATIO
ORDER PART TOP VIEW ORDER PART TOP VIEW NUMBER NUMBER NC 1 20 NC C 1 16 OSC TG C 2 19 TG RUN/SS 2 15 BOOST LTC1735CGN OSC LTC1735CF RUN/SS 3 18 BOOST I 3 14 TH SW LTC1735CS LTC1735IF I 4 17 SW FCB 4 13 V TH IN LTC1735IGN FCB 5 16 V SGND 5 12 IN INTVCC LTC1735IS SGND 6 15 INTV V 6 11 CC OSENSE BG LTC1735EGN V 7 14 BG SENSE– 7 10 PGND OSENSE PGOOD 8 13 PGND SENSE+ 8 9 EXTVCC GN PART MARKING SENSE– 9 12 EXTVCC GN PACKAGE S PACKAGE 1735 SENSE+ 10 11 NC 16-LEAD NARROW 16-LEAD PLASTIC SO PLASTIC SSOP 1735I F PACKAGE T 20-LEAD PLASTIC TSSOP JMAX = 125°C, θJA = 130°C/W (GN) 1735E TJMAX = 125°C, θJA = 110°C/W (S) TJMAX = 125°C, θJA = 110°C/W Consult LTC marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 15V, VRUN/SS = 5V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loop
IVOSENSE Feedback Current (Note 3) – 4 – 25 nA VOSENSE Feedback Voltage (Note 3) ● 0.792 0.8 0.808 V ∆VLINEREG Reference Voltage Line Regulation VIN = 3.6V to 30V (Note 3) 0.001 0.02 %/V ∆VLOADREG Output Voltage Load Regulation (Note 3) Measured in Servo Loop; VITH = 0.7V ● 0.1 0.3 % Measured in Servo Loop; VITH = 2V ● – 0.1 – 0.3 % DF Max Maximum Duty Factor In Dropout 98 99.4 % gm Transconductance Amplifier gm 1.3 mmho VFCB Forced Continuous Threshold ● 0.76 0.8 0.84 V IFCB Forced Continuous Current VFCB = 0.85V – 0.17 – 0.3 µA 1735fc 2