el7630 Intersil Corporation, el7630 Datasheet
el7630
Available stocks
Related parts for el7630
el7630 Summary of contents
Page 1
... With efficiencies up to 86%, the EL7630 operates at 1.35MHz switching frequency while operating from an input voltage of between 2.7V and 5.5V. The maximum output voltage of 27V enables the EL7630 to drive LEDs in series also possible to use the EL7630 to drive LEDs in series/parallel combination for applications requiring LEDs. ...
Page 2
... ENAB Voltage Low ENAB-LO I ENAB Pin Bias Current ENAB ∆I /∆V Line Regulation LED IN 2 EL7630 = 25°C) Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +125°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Lead Temperature (soldering, 10s +300° 3V, over temperature from -40°C to 85°C unless otherwise specified. ...
Page 3
... FIGURE 1. TYPICAL APPLICATION CIRCUIT AND EFFICIENCY vs LED CURRENT Typical Performance Curves 0.7 0.6 0.5 0.4 0.3 0.2 0 (V) IN FIGURE 2. QUIESCENT CURRENT (ENABLE) 24.7 24.68 24.66 24.64 24.62 24.6 24.58 24.56 2 (V) IN FIGURE 4. LINE REGULATION 3 EL7630 LEDs C2 0.22µF SET Ω 4.5 5 5.5 FIGURE 5. SWITCHING FREQUENCY vs TEMPERATURE LED CURRENT (mA) 24.6 24.595 24.59 24.585 24.58 24.575 24.57 24.565 24.56 0 ...
Page 4
... Compensation Compensation (shared with PGND (shared with PGND in TSOT5 package) GND in TSOT5 package) GND FIGURE 7. EL7630 BLOCK DIAGRAM PGND (Pin 5, SC-70 Package) - Ground Pin. Connect to Pin 2 and to local ground. V (Pin5/Pin6 SC-70 Package) - Input Supply Pin. IN Connect to the input supply voltage. 80 100 ...
Page 5
... EL7630 uses a constant frequency, current mode control scheme to provide excellent line and load regulation. It can drive LEDs in series or 15 LEDs in parallel/series configuration, with efficiencies of up 86%. EL7630 operates from an input voltage of 2.7V to 5.5V and can boost up to 27V. Steady-State Operation EL7630 operates with constant frequency PWM. The switching frequency is around 1 ...
Page 6
... LEDs are disconnected from the circuit or the LEDs fail. In this case the feedback voltage will be zero. The EL7630 will then switch to a high duty cycle resulting in a high output voltage, which may cause the LX pin voltage to exceed its maximum 27V rating. To ...
Page 7
... Maximizing the copper area connected to this pin is preferable. In addition, a solid ground plane is always helpful for the EMI performance. The demo board is a good example of layout based on the principle. Please refer to the EL7630 Application Brief for the layout. C2 LEDs -L1-LX-PGND, and V IN should be very close to this pin ...