Datasheet LTC1698 (Analog Devices) - 2
| Hersteller | Analog Devices |
| Beschreibung | Isolated Secondary Synchronous Rectifier Controller |
| Seiten / Seite | 24 / 2 — ABSOLUTE MAXIMUM RATINGS. PACKAGE/ORDER INFORMATION. (Note 1). ELECTRICAL … |
| Dateiformat / Größe | PDF / 1.1 Mb |
| Dokumentensprache | Englisch |
ABSOLUTE MAXIMUM RATINGS. PACKAGE/ORDER INFORMATION. (Note 1). ELECTRICAL CHARACTERISTICS The
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LTC1698
W W W U U W U ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Note 1)
VDD, PWRGD ... 13.2V TOP VIEW ORDER PART Input Voltage NUMBER V 1 16 DD FG MARGIN, VFB, OVPIN, ISNSGND, ISNS ... –0.3V to 5.3V CG 2 15 SYNC LTC1698EGN SYNC ... – 14V to 14V PGND 3 14 VAUX LTC1698ES Output Voltage GND 4 13 ICOMP LTC1698IGN VCOMP, ICOMP (Note 2)... –0.3V to 5.3V OPTODRV 5 12 ISNS LTC1698IS Power Dissipation .. 500mW V 6 11 COMP ISNSGND Operating Temperature Range MARGIN 7 10 PWRGD GN PART MARKING LTC1698E (Note 3) .. – 40°C to 85°C V 8 9 FB OVPIN 1698 LTC1698I ... – 40°C to 85°C GN PACKAGE S PACKAGE 16-LEAD PLASTIC SSOP 16-LEAD PLASTIC SO 1698I Storage Temperature Range ... – 65°C to 150°C T Lead Temperature (Soldering, 10 sec).. 300°C JMAX = 125°C, θJA = 130°C/W (GN) TJMAX = 125°C, θJA = 110°C/W (SO) Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
indicates specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VDD = 8V, unless otherwise noted. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VDD Supply Voltage ● 6 8 12.6 V VUVLO Undervoltage Lockout 4 V IVDD VDD Supply Current VFB, OVPIN, VISNS, VISNSGND = 0V, CFG = CCG = 1000pF, CVAUX = 0.1µF, VSYNC = 0V ● 1.8 4 mA fSYNC = 100kHz (Note 5) 5.0 mA
MARGIN and Error Amplifier
VFB Feedback Voltage MARGIN = Open, VCOMP = 1V (Note 7) 1.223 1.233 1.243 V ● 1.215 1.233 1.251 V IVFB Feedback Input Current VFB = 1.233V ● 0.05 1 µA VMARGIN MARGIN Voltage MARGIN = Open 1.65 V RMARGIN MARGIN Input Resistance 16.5 kΩ ∆VFB Feedback Voltage Adjustment VMARGIN = 3.3V ● 4 5 6 % VMARGIN = 0V ● – 6 – 5 – 4 % GERR Error Amplifier Open-Loop DC Gain VCOMP = 0.8V to 1.2V, Load = 2kΩ, 100pF ● 65 90 dB BWERR Error Amplifier Unity-Gain Bandwidth No Load (Note 6) 2 MHz VCLAMP Error Amplifier Output Clamp Voltage VFB = 0V 2 V IVCOMP Error Amplifier Source Current VFB = 0V ● – 25 – 10 mA Error Amplifier Sink Current VFB = 5V, VCOMP = 1.233V ● 3 7 mA
OPTODRV
GOPTO Opto Driver DC Gain OVPIN, VISNS, VISNSGND = 0V ● 4.75 5 5.25 V/V BWOPTO Opto Driver Unity-Gain Bandwidth No Load (Note 6) 1 MHz VOPTOHIGH Opto Driver Output High Voltage VFB, OVPIN, VISNSGND = 0V, VISNS = – 50mV, IOPTODRV = –10mA ● 4 5 V IOPTOSC Opto Driver Output Short-Circuit Current OVPIN, VISNSGND, VISNS = 0V, VFB = 1.233V ● – 50 – 25 – 10 mA 1698f 2
W W W U U W U ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Note 1)
VDD, PWRGD ... 13.2V TOP VIEW ORDER PART Input Voltage NUMBER V 1 16 DD FG MARGIN, VFB, OVPIN, ISNSGND, ISNS ... –0.3V to 5.3V CG 2 15 SYNC LTC1698EGN SYNC ... – 14V to 14V PGND 3 14 VAUX LTC1698ES Output Voltage GND 4 13 ICOMP LTC1698IGN VCOMP, ICOMP (Note 2)... –0.3V to 5.3V OPTODRV 5 12 ISNS LTC1698IS Power Dissipation .. 500mW V 6 11 COMP ISNSGND Operating Temperature Range MARGIN 7 10 PWRGD GN PART MARKING LTC1698E (Note 3) .. – 40°C to 85°C V 8 9 FB OVPIN 1698 LTC1698I ... – 40°C to 85°C GN PACKAGE S PACKAGE 16-LEAD PLASTIC SSOP 16-LEAD PLASTIC SO 1698I Storage Temperature Range ... – 65°C to 150°C T Lead Temperature (Soldering, 10 sec).. 300°C JMAX = 125°C, θJA = 130°C/W (GN) TJMAX = 125°C, θJA = 110°C/W (SO) Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
indicates specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VDD = 8V, unless otherwise noted. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VDD Supply Voltage ● 6 8 12.6 V VUVLO Undervoltage Lockout 4 V IVDD VDD Supply Current VFB, OVPIN, VISNS, VISNSGND = 0V, CFG = CCG = 1000pF, CVAUX = 0.1µF, VSYNC = 0V ● 1.8 4 mA fSYNC = 100kHz (Note 5) 5.0 mA
MARGIN and Error Amplifier
VFB Feedback Voltage MARGIN = Open, VCOMP = 1V (Note 7) 1.223 1.233 1.243 V ● 1.215 1.233 1.251 V IVFB Feedback Input Current VFB = 1.233V ● 0.05 1 µA VMARGIN MARGIN Voltage MARGIN = Open 1.65 V RMARGIN MARGIN Input Resistance 16.5 kΩ ∆VFB Feedback Voltage Adjustment VMARGIN = 3.3V ● 4 5 6 % VMARGIN = 0V ● – 6 – 5 – 4 % GERR Error Amplifier Open-Loop DC Gain VCOMP = 0.8V to 1.2V, Load = 2kΩ, 100pF ● 65 90 dB BWERR Error Amplifier Unity-Gain Bandwidth No Load (Note 6) 2 MHz VCLAMP Error Amplifier Output Clamp Voltage VFB = 0V 2 V IVCOMP Error Amplifier Source Current VFB = 0V ● – 25 – 10 mA Error Amplifier Sink Current VFB = 5V, VCOMP = 1.233V ● 3 7 mA
OPTODRV
GOPTO Opto Driver DC Gain OVPIN, VISNS, VISNSGND = 0V ● 4.75 5 5.25 V/V BWOPTO Opto Driver Unity-Gain Bandwidth No Load (Note 6) 1 MHz VOPTOHIGH Opto Driver Output High Voltage VFB, OVPIN, VISNSGND = 0V, VISNS = – 50mV, IOPTODRV = –10mA ● 4 5 V IOPTOSC Opto Driver Output Short-Circuit Current OVPIN, VISNSGND, VISNS = 0V, VFB = 1.233V ● – 50 – 25 – 10 mA 1698f 2