Datasheet LT1737 (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | High Power Isolated Flyback Controller |
| Pages / Page | 28 / 2 — ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). ELECTRICAL … |
| File Format / Size | PDF / 386 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
LT1737
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
VCC Supply Voltage ... 22V TOP VIEW ORDER PART UVLO Pin Voltage .. VCC NUMBER PGND 1 16 GATE ISENSE Pin Voltage .. 2V I 2 15 SENSE VCC FB Pin Current ... ±2mA LT1737CGN SFST 3 14 tON Operating Junction LT1737CS R 4 13 OCMP ENDLY Temperature Range LT1737IGN R 5 12 CMPC MINENAB LT1737C ... 0°C to 100°C LT1737IS OSCAP 6 11 SGND LT1737I .. –40°C to 125°C V 7 10 C UVLO GN PART MARKING Storage Temperature Range .. – 65°C to 150°C FB 8 9 3VOUT 1737 Lead Temperature (Soldering, 10 sec).. 300°C GN PACKAGE S PACKAGE 16-LEAD PLASTIC SSOP 16-LEAD PLASTIC SO 1737I TJMAX = 125°C, θJA = 110°C/W (GN) TJMAX = 125°C, θJA = 110°C/W (SO) Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VCC = 14V, GATE open, VC = 1.4V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Power Supply
VCC(MIN) Minimum Input Voltage ● 4.1 4.5 V ICC Supply Current VC = Open ● 10 15 mA Shutdown Current VUVLO = 0V, VC = Open ● 50 150 µA
Feedback Amplifier
VFB Feedback Voltage 1.230 1.245 1.260 V ● 1.220 1.270 V IFB Feedback Pin Input Current 500 nA gm Feedback Amplifier Transconductance ∆lC = ±10µA ● 400 1000 1800 µmho ISRC, ISNK Feedback Amplifier Source or Sink Current ● 30 50 80 µA VCL Feedback Amplifier Clamp Voltage 2.5 V Reference Voltage/Current Line Regulation 4.75V ≤ VIN ≤ 18V ● 0.01 0.05 %/V Voltage Gain VC = 1V to 2V 2000 V/V Soft-Start Charging Current VSFST = 0V 25 40 50 µA Soft-Start Discharge Current VSFST = 1.5V, VUVLO = 0V 0.8 1.5 mA
Gate Output
VGATE Output High Level IGATE = 100mA ● 11.5 12.1 V IGATE = 500mA ● 11.0 11.8 V Output Low Level IGATE = 100mA ● 0.3 0.45 V IGATE = 500mA ● 0.6 1.0 V IGATE Output Sink Current in Shutdown, VUVLO = 0V VGATE = 2V ● 1.2 2.5 mA tr Rise Time CL = 1000pF 30 ns tf Fall Time CL = 1000pF 30 ns 1737fa 2
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
VCC Supply Voltage ... 22V TOP VIEW ORDER PART UVLO Pin Voltage .. VCC NUMBER PGND 1 16 GATE ISENSE Pin Voltage .. 2V I 2 15 SENSE VCC FB Pin Current ... ±2mA LT1737CGN SFST 3 14 tON Operating Junction LT1737CS R 4 13 OCMP ENDLY Temperature Range LT1737IGN R 5 12 CMPC MINENAB LT1737C ... 0°C to 100°C LT1737IS OSCAP 6 11 SGND LT1737I .. –40°C to 125°C V 7 10 C UVLO GN PART MARKING Storage Temperature Range .. – 65°C to 150°C FB 8 9 3VOUT 1737 Lead Temperature (Soldering, 10 sec).. 300°C GN PACKAGE S PACKAGE 16-LEAD PLASTIC SSOP 16-LEAD PLASTIC SO 1737I TJMAX = 125°C, θJA = 110°C/W (GN) TJMAX = 125°C, θJA = 110°C/W (SO) Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VCC = 14V, GATE open, VC = 1.4V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Power Supply
VCC(MIN) Minimum Input Voltage ● 4.1 4.5 V ICC Supply Current VC = Open ● 10 15 mA Shutdown Current VUVLO = 0V, VC = Open ● 50 150 µA
Feedback Amplifier
VFB Feedback Voltage 1.230 1.245 1.260 V ● 1.220 1.270 V IFB Feedback Pin Input Current 500 nA gm Feedback Amplifier Transconductance ∆lC = ±10µA ● 400 1000 1800 µmho ISRC, ISNK Feedback Amplifier Source or Sink Current ● 30 50 80 µA VCL Feedback Amplifier Clamp Voltage 2.5 V Reference Voltage/Current Line Regulation 4.75V ≤ VIN ≤ 18V ● 0.01 0.05 %/V Voltage Gain VC = 1V to 2V 2000 V/V Soft-Start Charging Current VSFST = 0V 25 40 50 µA Soft-Start Discharge Current VSFST = 1.5V, VUVLO = 0V 0.8 1.5 mA
Gate Output
VGATE Output High Level IGATE = 100mA ● 11.5 12.1 V IGATE = 500mA ● 11.0 11.8 V Output Low Level IGATE = 100mA ● 0.3 0.45 V IGATE = 500mA ● 0.6 1.0 V IGATE Output Sink Current in Shutdown, VUVLO = 0V VGATE = 2V ● 1.2 2.5 mA tr Rise Time CL = 1000pF 30 ns tf Fall Time CL = 1000pF 30 ns 1737fa 2
