Datasheet LTC3892, LTC3892-1, LTC3892-2 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller |
| Pages / Page | 38 / 4 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| File Format / Size | PDF / 1.4 Mb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the specified operating
Model Line for this Datasheet
- LTC3892EFE-1#PBF LTC3892EFE-1#TRPBF LTC3892EUH#PBF LTC3892EUH#TRPBF LTC3892EUH-2#PBF LTC3892EUH-2#TRPBF LTC3892HFE-1#PBF LTC3892HFE-1#TRPBF LTC3892HUH#PBF LTC3892HUH#TRPBF LTC3892HUH-2#PBF LTC3892HUH-2#TRPBF LTC3892IFE-1#PBF LTC3892IFE-1#TRPBF LTC3892IUH#PBF LTC3892IUH#TRPBF LTC3892IUH-2#PBF LTC3892IUH-2#TRPBF LTC3892MPFE-1#PBF LTC3892MPFE-1#TRPBF LTC3892MPUH#PBF LTC3892MPUH#TRPBF LTC3892MPUH-2#PBF LTC3892MPUH-2#TRPBF
Text Version of Document
LTC3892/ LTC3892-1/LTC3892-2
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = 12V, VRUN1,2 = 5V, VEXTVCC = 0V, VDRVSET = 0V, VPRG1 = FLOAT unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Supply Operating Voltage Range 4.5 60 V VFB1 Channel 1 Regulated Feedback (Note 4) ITH1 Voltage = 1.2V Voltage 0°C to 85°C, VPRG1 = FLOAT (LTC3892/LTC3892-2) or LTC3892-1 0.792 0.800 0.808 V VPRG1 = FLOAT (LTC3892/LTC3892-2) or LTC3892-1 l 0.788 0.800 0.812 V VPRG1 = 0V (LTC3892/LTC3892-2) l 3.234 3.3 3.366 V VPRG1 = INTVCC (LTC3892/LTC3892-2) l 4.890 5.0 5.110 V VFB2 Channel 2 Regulated Feedback (Note 4) ITH2 Voltage = 1.2V V Voltage 0°C to 85°C 0.792 0.800 0.808 V l 0.788 0.800 0.812 IFB2 Channel 2 Feedback Current (Note 4) –2 ±50 nA IFB1 Channel 1 Feedback Current (Note 4) VPRG1 = FLOAT (LTC3892/LTC3892-2) or LTC3892-1 –0.002 ±0.05 µA VPRG1 = 0V (LTC3892/LTC3892-2) 4 6 µA VPRG1 = INTVCC (LTC3892/LTC3892-2) 4 6 µA VREFLNREG Reference Voltage Line Regulation (Note 4) VIN = 4.5V to 60V 0.002 0.02 %/V VLOADREG Output Voltage Load Regulation (Note 4) Measured in Servo Loop, l 0.01 0.1 % ∆ITH Voltage = 1.2V to 0.7V (Note 4) Measured in Servo Loop, l –0.01 –0.1 % ∆ITH Voltage = 1.2V to 2V gm1,2 Transconductance Amplifier gm (Note 4) ITH1,2 = 1.2V, Sink/Source 5µA 2 mmho IQ Input DC Supply Current (Note 5) VDRVSET = 0V Pulse-Skipping or Forced Continuous RUN1 = 5V and RUN2 = 0V or 1.6 mA Mode (One Channel On) RUN2 = 5V and RUN1 = 0V, VFB1,2 = 0.83V (No Load) Pulse-Skipping or Forced Continuous RUN1,2 = 5V, VFB1,2 = 0.83V (No Load) 2.8 mA Mode (Both Channels On) Sleep Mode (One Channel On) RUN1 = 5V and RUN2 = 0V or l 29 55 µA RUN2 = 5V and RUN1 = 0V, VFB1,2 = 0.83V (No Load) Sleep Mode (Both Channels On) RUN1,2 = 5V, VFB1,2 = 0.83V (No Load) 34 55 µA Shutdown RUN1,2 = 0V 3.6 10 µA UVLO Undervoltage Lockout DRVCC Ramping Up DRVUV = 0V l 4.0 4.2 V DRVUV = INTVCC l 7.5 7.8 V DRVCC Ramping Down DRVUV = 0V l 3.6 3.8 4.0 V DRVUV = INTVCC l 6.4 6.7 7.0 V VOVL1,2 Feedback Overvoltage Protection Measured at VFB1,2 Relative to Regulated VFB1,2 7 10 13 % (LTC3892/LTC3892-1) ISENSE1,2+ SENSE+ Pin Current ±1 µA ISENSE1,2– SENSE– Pins Current VOUT1,2 < VINTVCC – 0.5V ±1 µA VOUT1,2 > VINTVCC + 0.5V 700 µA DFMAX(TG) Maximum Duty Factor for TG In Dropout, FREQ = 0V 97.5 99 % ITRACK/SS1,2 Soft-Start Charge Current VTRACK/SS1,2 = 0V 8 10 12 µA 38921fc 4 For more information www.linear.com/LTC3892 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Typical Performance Characteristics Pin Functions Functional Diagrams Operation Package Description Typical Application Related Parts
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = 12V, VRUN1,2 = 5V, VEXTVCC = 0V, VDRVSET = 0V, VPRG1 = FLOAT unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Supply Operating Voltage Range 4.5 60 V VFB1 Channel 1 Regulated Feedback (Note 4) ITH1 Voltage = 1.2V Voltage 0°C to 85°C, VPRG1 = FLOAT (LTC3892/LTC3892-2) or LTC3892-1 0.792 0.800 0.808 V VPRG1 = FLOAT (LTC3892/LTC3892-2) or LTC3892-1 l 0.788 0.800 0.812 V VPRG1 = 0V (LTC3892/LTC3892-2) l 3.234 3.3 3.366 V VPRG1 = INTVCC (LTC3892/LTC3892-2) l 4.890 5.0 5.110 V VFB2 Channel 2 Regulated Feedback (Note 4) ITH2 Voltage = 1.2V V Voltage 0°C to 85°C 0.792 0.800 0.808 V l 0.788 0.800 0.812 IFB2 Channel 2 Feedback Current (Note 4) –2 ±50 nA IFB1 Channel 1 Feedback Current (Note 4) VPRG1 = FLOAT (LTC3892/LTC3892-2) or LTC3892-1 –0.002 ±0.05 µA VPRG1 = 0V (LTC3892/LTC3892-2) 4 6 µA VPRG1 = INTVCC (LTC3892/LTC3892-2) 4 6 µA VREFLNREG Reference Voltage Line Regulation (Note 4) VIN = 4.5V to 60V 0.002 0.02 %/V VLOADREG Output Voltage Load Regulation (Note 4) Measured in Servo Loop, l 0.01 0.1 % ∆ITH Voltage = 1.2V to 0.7V (Note 4) Measured in Servo Loop, l –0.01 –0.1 % ∆ITH Voltage = 1.2V to 2V gm1,2 Transconductance Amplifier gm (Note 4) ITH1,2 = 1.2V, Sink/Source 5µA 2 mmho IQ Input DC Supply Current (Note 5) VDRVSET = 0V Pulse-Skipping or Forced Continuous RUN1 = 5V and RUN2 = 0V or 1.6 mA Mode (One Channel On) RUN2 = 5V and RUN1 = 0V, VFB1,2 = 0.83V (No Load) Pulse-Skipping or Forced Continuous RUN1,2 = 5V, VFB1,2 = 0.83V (No Load) 2.8 mA Mode (Both Channels On) Sleep Mode (One Channel On) RUN1 = 5V and RUN2 = 0V or l 29 55 µA RUN2 = 5V and RUN1 = 0V, VFB1,2 = 0.83V (No Load) Sleep Mode (Both Channels On) RUN1,2 = 5V, VFB1,2 = 0.83V (No Load) 34 55 µA Shutdown RUN1,2 = 0V 3.6 10 µA UVLO Undervoltage Lockout DRVCC Ramping Up DRVUV = 0V l 4.0 4.2 V DRVUV = INTVCC l 7.5 7.8 V DRVCC Ramping Down DRVUV = 0V l 3.6 3.8 4.0 V DRVUV = INTVCC l 6.4 6.7 7.0 V VOVL1,2 Feedback Overvoltage Protection Measured at VFB1,2 Relative to Regulated VFB1,2 7 10 13 % (LTC3892/LTC3892-1) ISENSE1,2+ SENSE+ Pin Current ±1 µA ISENSE1,2– SENSE– Pins Current VOUT1,2 < VINTVCC – 0.5V ±1 µA VOUT1,2 > VINTVCC + 0.5V 700 µA DFMAX(TG) Maximum Duty Factor for TG In Dropout, FREQ = 0V 97.5 99 % ITRACK/SS1,2 Soft-Start Charge Current VTRACK/SS1,2 = 0V 8 10 12 µA 38921fc 4 For more information www.linear.com/LTC3892 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Typical Performance Characteristics Pin Functions Functional Diagrams Operation Package Description Typical Application Related Parts
