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TOP242-250 ® TOPSwitch-GX Family ® Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher Product Highlights Lower System Cost, High Design Flexibility • Extended power range for higher power applications • No heatsink required up to 34 W using P/G packages • Features eliminate or reduce cost of external components • Fully integrated soft-start for minimum stress/overshoot • Externally programmable accurate current limit • Wider duty cycle for more power, smaller input capacitor • Separate line sense and current limit pins on Y/R/F packages • Line under-voltage (UV) detection: no turn off glitches • Line overvoltage (OV) shutdown extends line surge limit • Line feed-forward with maximum duty cycle (DCMAX ) reduction rejects line ripple and limits DCMAX at high line  • Frequency jittering reduces EMI and EMI filtering costs • Regulates to zero load without dummy loading • 132 kHz frequency reduces transformer/power supply size • Half frequency option in Y/R/F packages for video applications • Hysteretic thermal shutdown for automatic fault recovery • Large thermal hysteresis prevents PC board overheating EcoSmart – Energy Efficient • Extremely low consumption in remote off mode  (80 mW at 110 VAC, 160 mW at 230 VAC) • Frequency lowered with load for high standby efficiency • Allows shutdown/wake-up via LAN/input port Description TOPSwitch-GX uses the same  line sensing (OV/UV, line feed-forward/DCMAX reduction), accurate externally set current limit, remote ON/OFF, synchronization to an external lower frequency, and frequency selection (132 kHz/66 kHz). All package types provide the following transparent features:  85-265 VAC Frame2 Adapter1 Open TOP242 P or G TOP242 R TOP242 Y or F TOP243 P or G TOP243 R TOP243 Y or F TOP244 P or G TOP244 R TOP244 Y or F TOP245 P or G TOP245 R TOP245 Y or F TOP246 P or G TOP246 R TOP246 Y or F TOP247 R TOP247 Y or F TOP248 R TOP248 Y or F TOP249 R TOP249 Y or F 9 W 15 W 10 W 13 W 29 W 20 W 16 W 34 W 30 W 19 W 37 W 40 W 21 W 40 W 60 W 42 W 85 W 43 W 105 W 44 W 120 W 15 W 22 W 22 W 25 W 45 W 45 W 28 W 50 W 65 W 30 W 57 W 85 W 34 W 64 W 125 W 70 W 165 W 75 W 205 W 79 W 250 W 6.5 W 11 W 7 W 9 W 17 W 15 W 11 W 20 W 20 W 13 W 23 W 26 W 15 W 26 W 40 W 28 W 55 W 30 W 70 W 31 W 80 W Frame2 10 W 14 W 14 W 15 W 23 W 30 W 20 W 28 W 45 W 22 W 33 W 60 W 26 W 38 W 90 W 43 W 125 W 48 W 155 W 53 W 180 W TOP250 R TOP250 Y or F 45 W 135 W 82 W 290 W 32 W 90 W 55 W 210 W Table 1. Notes: 1. Typical continuous power in a non-ventilated enclosed adapter measured at 50 °C ambient. 2. Maximum practical continuous power in an open frame design at 50 °C ambient. See Key Applications for detailed conditions. 3. For lead-free package options, see Part Ordering Information. 4. 230 VAC or 100/115 VAC with doubler.