Datasheet LTC3568 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | 1.8A, 4MHz, Synchronous Step-Down DC/DC Converter |
| 页数 / 页 | 18 / 2 — (Note 1). LEAD FREE FINISH. TAPE AND REEL. PART MARKING*. … |
| 文件格式/大小 | PDF / 313 Kb |
| 文件语言 | 英语 |
(Note 1). LEAD FREE FINISH. TAPE AND REEL. PART MARKING*. PACKAGE DESCRIPTION. TEMPERATURE RANGE. LEAD BASED FINISH. The
该数据表的模型线
文件文字版本
LTC3568 absoluTe MaxiMuM raTings pin conFiguraTion
(Note 1)
PV TOP VIEW IN, SVIN Voltages ... –0.3V to 6V VFB, ITH, SHDN/RT Voltages ..–0.3V to (VIN + 0.3V) SHDN/RT 1 10 ITH SYNC/MODE Voltage .. –0.3V to (VIN + 0.3V) SYNC/MODE 2 9 VFB SW Voltage ... –0.3V to (V SGND 3 11 8 PGOOD IN + 0.3V) SW 4 7 SV PGOOD Voltage ..–0.3V to 6V IN PGND 5 6 PVIN Operating Junction Temperature Range (Note 2) ...–40°C to 125°C DD PACKAGE 10-LEAD (3mm s 3mm) PLASTIC DFN Junction Temperature (Notes 5, 8) .. 125°C TJMAX = 125°C, θJA = 43°C/W, θJC = 3°C/W Storage Temperature Range ..–65°C to 125°C EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3568EDD#PBF LTC3568EDD#TRPBF LCSG 10-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LTC3568IDD#PBF LTC3568IDD#TRPBF LCSG 10-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C
LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3568EDD LTC3568EDD#TR LCSG 10-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LTC3568IDD LTC3568IDD#TR LCSG 10-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ e
lecTrical characTerisTics
The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 3.3V, RT = 324k unless otherwise specified. (Note 2) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Operating Voltage Range 2.25 5.5 V IFB Feedback Pin Input Current (Note 3) ±0.1 µA VFB Feedback Voltage LTC3568E (Note 3) l 0.784 0.8 0.816 V LTC3568I (Note 3) l 0.780 0.8 0.816 V ΔVLINEREG Reference Voltage Line Regulation VIN = 2.25V to 5V 0.04 0.2 %/V ΔVLOADREG Output Voltage Load Regulation ITH = 0.36, (Note 3) l 0.02 0.2 % ITH = 0.84, (Note 3) l –0.02 –0.2 % gm(EA) Error Amplifier Transconductance ITH Pin Load = ±5µA (Note 3) 800 µS IS Input DC Supply Current (Note 4) Active Mode VFB = 0.75V, SYNC/MODE = 3.3V 240 350 µA Sleep Mode VSYNC/MODE = 3.3V, VFB = 1V 62 100 µA Shutdown VSHDN/RT = 3.3V 0.1 1 µA VSHDN/RT Shutdown Threshold High VIN – 0.6 VIN – 0.4 V Active Oscillator Resistor 324k 1M Ω 3568fa Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
(Note 1)
PV TOP VIEW IN, SVIN Voltages ... –0.3V to 6V VFB, ITH, SHDN/RT Voltages ..–0.3V to (VIN + 0.3V) SHDN/RT 1 10 ITH SYNC/MODE Voltage .. –0.3V to (VIN + 0.3V) SYNC/MODE 2 9 VFB SW Voltage ... –0.3V to (V SGND 3 11 8 PGOOD IN + 0.3V) SW 4 7 SV PGOOD Voltage ..–0.3V to 6V IN PGND 5 6 PVIN Operating Junction Temperature Range (Note 2) ...–40°C to 125°C DD PACKAGE 10-LEAD (3mm s 3mm) PLASTIC DFN Junction Temperature (Notes 5, 8) .. 125°C TJMAX = 125°C, θJA = 43°C/W, θJC = 3°C/W Storage Temperature Range ..–65°C to 125°C EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3568EDD#PBF LTC3568EDD#TRPBF LCSG 10-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LTC3568IDD#PBF LTC3568IDD#TRPBF LCSG 10-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C
LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3568EDD LTC3568EDD#TR LCSG 10-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LTC3568IDD LTC3568IDD#TR LCSG 10-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ e
lecTrical characTerisTics
The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 3.3V, RT = 324k unless otherwise specified. (Note 2) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Operating Voltage Range 2.25 5.5 V IFB Feedback Pin Input Current (Note 3) ±0.1 µA VFB Feedback Voltage LTC3568E (Note 3) l 0.784 0.8 0.816 V LTC3568I (Note 3) l 0.780 0.8 0.816 V ΔVLINEREG Reference Voltage Line Regulation VIN = 2.25V to 5V 0.04 0.2 %/V ΔVLOADREG Output Voltage Load Regulation ITH = 0.36, (Note 3) l 0.02 0.2 % ITH = 0.84, (Note 3) l –0.02 –0.2 % gm(EA) Error Amplifier Transconductance ITH Pin Load = ±5µA (Note 3) 800 µS IS Input DC Supply Current (Note 4) Active Mode VFB = 0.75V, SYNC/MODE = 3.3V 240 350 µA Sleep Mode VSYNC/MODE = 3.3V, VFB = 1V 62 100 µA Shutdown VSHDN/RT = 3.3V 0.1 1 µA VSHDN/RT Shutdown Threshold High VIN – 0.6 VIN – 0.4 V Active Oscillator Resistor 324k 1M Ω 3568fa Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts