Datasheet LTC3808 (Analog Devices) - 2
| 制造商 | Analog Devices |
| 描述 | No RSENSE , Low EMI, Synchronous DC/DC Controller with Output Tracking |
| 页数 / 页 | 28 / 2 — ABSOLUTE MAXIMUM RATINGS (Note 1). PACKAGE/ORDER INFORMATION. ELECTRICAL … |
| 文件格式/大小 | PDF / 386 Kb |
| 文件语言 | 英语 |
ABSOLUTE MAXIMUM RATINGS (Note 1). PACKAGE/ORDER INFORMATION. ELECTRICAL CHARACTERISTICS The
该数据表的模型线
文件文字版本
LTC3808
W W W U ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Supply Voltage (VIN).. – 0.3V to 10V TG, BG Peak Output Current (<10µs).. 1A PLLLPF, RUN, SYNC/MODE, TRACK/SS, Operating Temperature Range (Note 2) ... – 40°C to 85°C SENSE+, IPRG Voltages .. – 0.3V to (VIN + 0.3V) Storage Ambient Temperature Range ... – 65°C to 125°C VFB, ITH Voltages.. –0.3V to 2.4V Junction Temperature (Note 3) .. 125°C SW, SENSE– Voltages ... – 2V to VIN + 1V (10V Max) Lead Temperature (Soldering, 10 sec) PGOOD ... – 0.3V to 10V GN16 Package .. 300°C
U W U PACKAGE/ORDER INFORMATION
TOP VIEW ORDER PART TOP VIEW ORDER PART NUMBER GND 1 NUMBER PLLLPF 1 14 SW 16 SW SYNC/MODE 2 13 SENSE– LTC3808EDE PLLLPF 2 15 SENSE– LTC3808EGN TRACK/SS 3 12 V SYNC/MODE 3 14 V IN IN PGOOD 4 15 11 SENSE+ TRACK/SS 4 13 SENSE+ V 5 10 TG FB PGOOD 5 12 TG I 6 9 BG TH V 6 11 FB BG DE PART RUN 7 8 IPRG I 7 10 MARKING TH IPRG DE PACKAGE RUN 8 9 GND 14-LEAD (4mm × 3mm) PLASTIC DFN 3808 T GN PACKAGE JMAX = 125°C, θJA = 37°C/W 16-LEAD PLASTIC SSOP EXPOSED PAD (PIN 15) IS GND (MUST BE SOLDERED TO PCB) TJMAX = 125°C, θJA = 130°C/W 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. VIN = 4.2V unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loops
Input DC Supply Current (Note 4) Normal Operation 350 500 µA Sleep Mode 105 150 µA Shutdown RUN = 0V 9 20 µA UVLO VIN = UVLO Threshold – 200mV 9 20 µA Undervoltage Lockout Threshold VIN Falling ● 1.95 2.25 2.55 V VIN Rising ● 2.15 2.45 2.75 V Shutdown Threshold of RUN Pin 0.8 1.1 1.4 V Start-Up Current Source TRACK/SS = 0V 0.65 1 1.35 µA Regulated Feedback Voltage (Note 5) ● 0.591 0.6 0.609 V Output Voltage Line Regulation 2.75V < VIN < 9.8V (Note 5) 0.01 0.04 %/V Output Voltage Load Regulation ITH = 0.9V (Note 5) 0.1 0.5 % ITH = 1.7V –0.1 –0.5 % VFB Input Current (Note 5) 9 50 nA Overvoltage Protect Threshold Measured at VFB 0.66 0.68 0.7 V 3808f 2
W W W U ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Supply Voltage (VIN).. – 0.3V to 10V TG, BG Peak Output Current (<10µs).. 1A PLLLPF, RUN, SYNC/MODE, TRACK/SS, Operating Temperature Range (Note 2) ... – 40°C to 85°C SENSE+, IPRG Voltages .. – 0.3V to (VIN + 0.3V) Storage Ambient Temperature Range ... – 65°C to 125°C VFB, ITH Voltages.. –0.3V to 2.4V Junction Temperature (Note 3) .. 125°C SW, SENSE– Voltages ... – 2V to VIN + 1V (10V Max) Lead Temperature (Soldering, 10 sec) PGOOD ... – 0.3V to 10V GN16 Package .. 300°C
U W U PACKAGE/ORDER INFORMATION
TOP VIEW ORDER PART TOP VIEW ORDER PART NUMBER GND 1 NUMBER PLLLPF 1 14 SW 16 SW SYNC/MODE 2 13 SENSE– LTC3808EDE PLLLPF 2 15 SENSE– LTC3808EGN TRACK/SS 3 12 V SYNC/MODE 3 14 V IN IN PGOOD 4 15 11 SENSE+ TRACK/SS 4 13 SENSE+ V 5 10 TG FB PGOOD 5 12 TG I 6 9 BG TH V 6 11 FB BG DE PART RUN 7 8 IPRG I 7 10 MARKING TH IPRG DE PACKAGE RUN 8 9 GND 14-LEAD (4mm × 3mm) PLASTIC DFN 3808 T GN PACKAGE JMAX = 125°C, θJA = 37°C/W 16-LEAD PLASTIC SSOP EXPOSED PAD (PIN 15) IS GND (MUST BE SOLDERED TO PCB) TJMAX = 125°C, θJA = 130°C/W 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. VIN = 4.2V unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loops
Input DC Supply Current (Note 4) Normal Operation 350 500 µA Sleep Mode 105 150 µA Shutdown RUN = 0V 9 20 µA UVLO VIN = UVLO Threshold – 200mV 9 20 µA Undervoltage Lockout Threshold VIN Falling ● 1.95 2.25 2.55 V VIN Rising ● 2.15 2.45 2.75 V Shutdown Threshold of RUN Pin 0.8 1.1 1.4 V Start-Up Current Source TRACK/SS = 0V 0.65 1 1.35 µA Regulated Feedback Voltage (Note 5) ● 0.591 0.6 0.609 V Output Voltage Line Regulation 2.75V < VIN < 9.8V (Note 5) 0.01 0.04 %/V Output Voltage Load Regulation ITH = 0.9V (Note 5) 0.1 0.5 % ITH = 1.7V –0.1 –0.5 % VFB Input Current (Note 5) 9 50 nA Overvoltage Protect Threshold Measured at VFB 0.66 0.68 0.7 V 3808f 2