Datasheet SRK1001 (STMicroelectronics) - 4
| Manufacturer | STMicroelectronics |
| Description | Adaptive synchronous rectification controller for flyback converter |
| Pages / Page | 27 / 4 — SRK1001. Maximum ratings. Table 2. Absolute maximum ratings. Symbol. Pin. … |
| File Format / Size | PDF / 615 Kb |
| Document Language | English |
SRK1001. Maximum ratings. Table 2. Absolute maximum ratings. Symbol. Pin. Parameter. Value. Unit. Table 3. Thermal data. DS13155. Rev 1
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SRK1001 Maximum ratings 2 Maximum ratings Table 2. Absolute maximum ratings Symbol Pin Parameter Value Unit
VCC 4 DC supply voltage -0.3 to 36 V DVS 5 Drain sense voltage referred to GND (with 300 Ω in series to the pin) -3 to 185 V VAUX 6 Auxiliary DC supply voltage -0.3 to 185 V VTOFF 7 TOFF pin voltage rating -0.3 to 3.6 V VTON 8 TON pin voltage rating -0.3 to 3.6 V VSYNC/DIS 1 DIS/SYNC pin voltage rating -0.3 to 3.6 V Stressing the device above the rating listed in above table may cause permanent damage to the device. Exposure to absolute maximum rated conditions may affect device reliability.
Table 3. Thermal data Symbol Parameter Value Unit
Θth j-amb Max. thermal resistance, junction-to-ambient(1) 125 °C/W Ψth j-case Max thermal resistance, junction-to-case top(1) 5 °C/W Ptot Power Dissipation @Tamb = 50°C 0.8 W Tj Junction Temperature Operating range -40 to 150 °C Tstg Storage Temperature -55 to 150 °C 1. Natural convection test environment, using JEDEC 1s1p PCB with vias.
DS13155
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Rev 1 page 4/27
Document Outline 1 Block diagram and pin connection 2 Maximum ratings 3 Typical application schematic 4 Electrical characteristics 5 Operation description 5.1 Drain voltage sensing 5.2 Turn-on 5.3 Minimum TON programming 5.4 Adaptive turn-off and TIMER 5.4.1 Fixed frequency mixed DCM/CCM operation 5.4.2 QR operation (with valley skipping) 5.4.3 Fixed frequency DCM operation 5.4.4 Variable frequency CCM operation 5.5 Minimum TOFF programming 5.6 Start-up phase 5.7 Low consumption mode operation: sleep-mode, burst mode, disable state 5.8 DIS/SYNC pin functions 5.9 VAUX pin operation in CC regulation 5.9.1 Example for parameter calculations 5.10 Operation in CC regulation and short circuit 5.11 Adaptive gate drive 6 Layout guidelines 7 Package mechanical data Revision history
SRK1001 Maximum ratings 2 Maximum ratings Table 2. Absolute maximum ratings Symbol Pin Parameter Value Unit
VCC 4 DC supply voltage -0.3 to 36 V DVS 5 Drain sense voltage referred to GND (with 300 Ω in series to the pin) -3 to 185 V VAUX 6 Auxiliary DC supply voltage -0.3 to 185 V VTOFF 7 TOFF pin voltage rating -0.3 to 3.6 V VTON 8 TON pin voltage rating -0.3 to 3.6 V VSYNC/DIS 1 DIS/SYNC pin voltage rating -0.3 to 3.6 V Stressing the device above the rating listed in above table may cause permanent damage to the device. Exposure to absolute maximum rated conditions may affect device reliability.
Table 3. Thermal data Symbol Parameter Value Unit
Θth j-amb Max. thermal resistance, junction-to-ambient(1) 125 °C/W Ψth j-case Max thermal resistance, junction-to-case top(1) 5 °C/W Ptot Power Dissipation @Tamb = 50°C 0.8 W Tj Junction Temperature Operating range -40 to 150 °C Tstg Storage Temperature -55 to 150 °C 1. Natural convection test environment, using JEDEC 1s1p PCB with vias.
DS13155
-
Rev 1 page 4/27
Document Outline 1 Block diagram and pin connection 2 Maximum ratings 3 Typical application schematic 4 Electrical characteristics 5 Operation description 5.1 Drain voltage sensing 5.2 Turn-on 5.3 Minimum TON programming 5.4 Adaptive turn-off and TIMER 5.4.1 Fixed frequency mixed DCM/CCM operation 5.4.2 QR operation (with valley skipping) 5.4.3 Fixed frequency DCM operation 5.4.4 Variable frequency CCM operation 5.5 Minimum TOFF programming 5.6 Start-up phase 5.7 Low consumption mode operation: sleep-mode, burst mode, disable state 5.8 DIS/SYNC pin functions 5.9 VAUX pin operation in CC regulation 5.9.1 Example for parameter calculations 5.10 Operation in CC regulation and short circuit 5.11 Adaptive gate drive 6 Layout guidelines 7 Package mechanical data Revision history
