Datasheet LT3710 (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | Secondary Side Synchronous Post Regulator |
| Pages / Page | 12 / 2 — ABSOLUTE AXI U. RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). ELECTRICAL … |
| File Format / Size | PDF / 228 Kb |
| Document Language | English |
ABSOLUTE AXI U. RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). ELECTRICAL CHARACTERISTICS The
Model Line for this Datasheet
Text Version of Document
LT3710
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
VCC Supply Voltage .. 26V TOP VIEW ORDER PART BOOST Pin Voltage With Respect to SW pin ... 10V BOOST 1 16 GBIAS NUMBER BOOST Pin Voltage With Respect to GND pin .. 35V TGATE 2 15 BGATE LT3710EFE SYNC Pin Voltage .. 30V SW 3 14 PGND Operating Junction Temperature Range CSET 4 13 VCC 17 (Notes 2, 3) .. – 40°C to 125°C SYNC 5 12 CL– Storage Temperature Range ... – 65°C to 150°C ILCOMP 6 11 CL+ Lead Temperature (Soldering, 10 sec).. 300°C SS 7 10 VAOUT FE PART Note: If higher than 30V on SYNC pin is needed, add a 10k resistor in series with the pin. V 8 9 FB BGS MARKING FE PACKAGE 3710EFE 16-LEAD PLASTIC TSSOP TJMAX = 125°C, θJA = 38°C/W EXPOSED PAD IS SGND (PIN 17) MUST BE CONNECTED TO PGND AND SOLDERED TO PCB Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VCC = 11V, operating maximum VCC = 24V, no load on any outputs unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Overall
Supply Voltage (VCC) ● 8 24 V Supply Current (IVCC) VAOUT ≤ 1.2V (Switching Off) 7 12 mA Boost Pin Current VBOOST = VSW + 8V, 0V ≤ VSW ≤ 24V TGATE High 2 3 mA TGATE Low 2 3 mA
Voltage Amplifier VA
Reference Voltage (VREF) 0.788 0.8 0.812 V ● 0.780 0.820 V FB Pin Input Current VFB = VREF 0.2 0.5 µA VAOUT High 4.5 V VAOUT Low 0.8 V VAOUT Source Current ● 100 300 µA Open-Loop Gain 100 dB Gain Bandwidth Product 10 MHz Soft-Start Current 5 12 18 µA
Current Limit Amplifier CA1
Current Limit Threshold at (V + – CL – VCL ) Common Mode Voltage from 0V to VCC – 2.5V ● 50 70 85 mV BGATE Off Threshold at (V + – CL – VCL ), BGS Pin Float Common Mode Voltage from 0V to VCC – 2.5V 0 8 15 mV Switching Off Threshold at ILCOMP VILCOMP 0.15 V Input Current (CL+, CL–) V + – CL = VCL 100 µA 3710f 2
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
VCC Supply Voltage .. 26V TOP VIEW ORDER PART BOOST Pin Voltage With Respect to SW pin ... 10V BOOST 1 16 GBIAS NUMBER BOOST Pin Voltage With Respect to GND pin .. 35V TGATE 2 15 BGATE LT3710EFE SYNC Pin Voltage .. 30V SW 3 14 PGND Operating Junction Temperature Range CSET 4 13 VCC 17 (Notes 2, 3) .. – 40°C to 125°C SYNC 5 12 CL– Storage Temperature Range ... – 65°C to 150°C ILCOMP 6 11 CL+ Lead Temperature (Soldering, 10 sec).. 300°C SS 7 10 VAOUT FE PART Note: If higher than 30V on SYNC pin is needed, add a 10k resistor in series with the pin. V 8 9 FB BGS MARKING FE PACKAGE 3710EFE 16-LEAD PLASTIC TSSOP TJMAX = 125°C, θJA = 38°C/W EXPOSED PAD IS SGND (PIN 17) MUST BE CONNECTED TO PGND AND SOLDERED TO PCB Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VCC = 11V, operating maximum VCC = 24V, no load on any outputs unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Overall
Supply Voltage (VCC) ● 8 24 V Supply Current (IVCC) VAOUT ≤ 1.2V (Switching Off) 7 12 mA Boost Pin Current VBOOST = VSW + 8V, 0V ≤ VSW ≤ 24V TGATE High 2 3 mA TGATE Low 2 3 mA
Voltage Amplifier VA
Reference Voltage (VREF) 0.788 0.8 0.812 V ● 0.780 0.820 V FB Pin Input Current VFB = VREF 0.2 0.5 µA VAOUT High 4.5 V VAOUT Low 0.8 V VAOUT Source Current ● 100 300 µA Open-Loop Gain 100 dB Gain Bandwidth Product 10 MHz Soft-Start Current 5 12 18 µA
Current Limit Amplifier CA1
Current Limit Threshold at (V + – CL – VCL ) Common Mode Voltage from 0V to VCC – 2.5V ● 50 70 85 mV BGATE Off Threshold at (V + – CL – VCL ), BGS Pin Float Common Mode Voltage from 0V to VCC – 2.5V 0 8 15 mV Switching Off Threshold at ILCOMP VILCOMP 0.15 V Input Current (CL+, CL–) V + – CL = VCL 100 µA 3710f 2
