Datasheet LT3697 (Analog Devices) - 8
| Manufacturer | Analog Devices |
| Description | USB 5V, 2.5A Output, 35V Input Buck with Cable Drop Compensation |
| Pages / Page | 32 / 8 — Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. … |
| File Format / Size | PDF / 451 Kb |
| Document Language | English |
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. Load Transient Response. Minimum Input Voltage
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LT3697
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. Load Transient Response Minimum Input Voltage Through Cable
7.0 5.75 7.0 VOLTAGE TO START VOLTAGE TO RUN 5.50 6.0 6.5 VOUT 5.25 5.0 TAGE (V) 6.0 CURRENT (A) VLOAD 5.00 4.0 FRONT PAGE CIRCUIT 5.5 TAGE (V) VIN = 12V 4.75 CABLE = 4m AWG20 3.0 VOL 5.0 CLOAD = 10µF 4.50 2.0 RSENSE = 22mΩ MINIMUM INPUT VOL R I 4.5 CBL = ∞ LOAD 4.25 RESISTOR LOAD 25mA/µs 1.0 DCRL = 10mΩ 4.0 4.00 0.0 1 10 100 1000 10000 LOAD CURRENT (mA) 200µs/DIV 3697 G28 3697 G29
Load Transient Response Output Current Limit Transient Through Cable Response
5.75 7.0 6 12 FRONT PAGE CIRCUIT V V IN = 12V LOAD 5.50 6.0 5 10 5.25 5.0 V 4 8 OUT CURRENT (A) CURRENT (A) V 5.00 4.0 FLT VLOAD 3 6 TAGE (V) TAGE (V) 4.75 FRONT PAGE CIRCUIT 3.0 VOL V VOL IN = 12V CABLE = 4m AWG20 2 4 4.50 I 2.0 LOAD CLOAD = 10µF I 25mA/µs LOAD 4.25 1.0 1 2 4.00 0.0 0 0 200µs/DIV 1ms/DIV 3697 G30 3697 G31
Feedback Shorted to Ground FLT Deglitching
7.0 8 R 4.0 V SENSE = 22mΩ OUT RLIM = OPEN 7 3.5 6.0 ILOAD 6 3.0 LOAD CURRENT (A) 5.0 5 2.5 4.0 VUSB5V TAGE (V) 4 2.0 TAGE (V) 3.0 VOL VOL 1.5 VUSB5V FLT 3 2.0 SHORTED 2 1.0 TO GROUND 1.0 1 0.5 VFLT 0.0 0 0.0 200µs/DIV 2ms/DIV 3697 G32 3697 G33 3697f 8 For more information www.linear.com/LT3697
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. Load Transient Response Minimum Input Voltage Through Cable
7.0 5.75 7.0 VOLTAGE TO START VOLTAGE TO RUN 5.50 6.0 6.5 VOUT 5.25 5.0 TAGE (V) 6.0 CURRENT (A) VLOAD 5.00 4.0 FRONT PAGE CIRCUIT 5.5 TAGE (V) VIN = 12V 4.75 CABLE = 4m AWG20 3.0 VOL 5.0 CLOAD = 10µF 4.50 2.0 RSENSE = 22mΩ MINIMUM INPUT VOL R I 4.5 CBL = ∞ LOAD 4.25 RESISTOR LOAD 25mA/µs 1.0 DCRL = 10mΩ 4.0 4.00 0.0 1 10 100 1000 10000 LOAD CURRENT (mA) 200µs/DIV 3697 G28 3697 G29
Load Transient Response Output Current Limit Transient Through Cable Response
5.75 7.0 6 12 FRONT PAGE CIRCUIT V V IN = 12V LOAD 5.50 6.0 5 10 5.25 5.0 V 4 8 OUT CURRENT (A) CURRENT (A) V 5.00 4.0 FLT VLOAD 3 6 TAGE (V) TAGE (V) 4.75 FRONT PAGE CIRCUIT 3.0 VOL V VOL IN = 12V CABLE = 4m AWG20 2 4 4.50 I 2.0 LOAD CLOAD = 10µF I 25mA/µs LOAD 4.25 1.0 1 2 4.00 0.0 0 0 200µs/DIV 1ms/DIV 3697 G30 3697 G31
Feedback Shorted to Ground FLT Deglitching
7.0 8 R 4.0 V SENSE = 22mΩ OUT RLIM = OPEN 7 3.5 6.0 ILOAD 6 3.0 LOAD CURRENT (A) 5.0 5 2.5 4.0 VUSB5V TAGE (V) 4 2.0 TAGE (V) 3.0 VOL VOL 1.5 VUSB5V FLT 3 2.0 SHORTED 2 1.0 TO GROUND 1.0 1 0.5 VFLT 0.0 0 0.0 200µs/DIV 2ms/DIV 3697 G32 3697 G33 3697f 8 For more information www.linear.com/LT3697
