NCP5612 ON Semiconductor, NCP5612 Datasheet
NCP5612
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NCP5612 Summary of contents
Page 1
... NCP5612 High Efficiency Ultra Small Thinnest White LED Driver The NCP5612 product is a dual output LED driver dedicated to the LCD display backlighting. The built−in DC/DC converter is based on a high efficient charge pump structure with operating mode 1x and 1.5x. It provides a peak 87% efficiency together with a 0.2% LED to LED matching. ...
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... mF/6.3 V GND CNTL 5 DIGITAL CONTROL 150 k V bat GND ANALOG CONTROL GND 1 GND 6 NC OVERTEMPERATURE NCP5612 C1 C2 220 nF 220 CHARGE PUMP DC/DC CONVERTER OVERVOLTAGE V bat GND Figure 2. Simplified Block Diagram http://onsemi.com mF/10 V GND V out ...
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... In no case shall the voltage at pin 4 be forced either higher or lower than the 600 mV provided by the internal reference. This pin supports the flow of data between the external MCU and the NCP5612 internal registers. The protocol makes profit of a Single Wire structure associated to a Serial 8 bits format data flow. − ...
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... Thermal Shutdown Protection Hysteresis Efficiency − LED1 = LED2 = Efficiency − LED1 = LED2 = NCP5612 = +25°C, Min & Max values are referenced −40°C to +85°C ambient A < 5.5 V, unless otherwise noted.) bat = 3.8 V, 3.2 V < V < 5.5 V, ICON = L bat < ...
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... CNTL Low (Note 9) CNTL Store data delay (Note 9) Input CNTL frequency (Note 9) 8. see Timings Reference 9. Parameter not tested in production, guaranteed by design. NCP5612 = +25°C, Min & Max values are referenced −40°C to +85°C ambient A < 5.5 V, unless otherwise noted.) bat Pin ...
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... V (no latch−up mechanism). Consequently, the chip can operate with no load during any test procedures. Load Current Calculation The load current is derived from the 600 mV reference voltage provided by the internal Band Gap associated to the NCP5612 APPLICATION INFORMATION t off t f ...
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... Figure 6. Typical Single and Double LED Connections Finally, an external network can be connected across V and ground, but the current through such network will not be regulated by the NCP5612 chip (see Figure 7). On top of that, the total current out of the V out to 60 mA. C4 NCP5612 1uF/6 ...
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... Pulse count ICON = disabled Note: timings are not scaled. Figure 8. Basic NCP5612 Programming Sequence NCP5612 • The system returns to zero if a pulse, delayed by 200 ms – T cycle restart from the beginning. Once the expected LED current value is reached, the CNTL pin must stay High to store the new data and maintain the LED active ...
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... The DC/DC converter is switched OFF and the two LED are disconnected when LED−REG=$00. When the ICON mode is activated, the DC/DC converter is switched OFF, LED#1 is deactivated from the LED current sense and the programmed bias current (powered from the V source) is forced into LED#2. bat NCP5612 Bit Clock I−LED(mA ...
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... DATA S−WIRE PORT GND NCP5612 C1 220 nF/6.3 V 220 nF/6.3 V GND C1N C1P C2N 11 V bat NCP5612 5 CNTL 4 DATA I REF 1 IREFBK GND LED/ICON GND GND Figure 12. Demo Board Schematic Diagram http://onsemi.com 1.0 mF/10 V C2P V 7 ...
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... PAD AS WELL AS THE TERMINALS. MILLIMETERS DIM MIN MAX A 0.50 0.60 A1 0.00 0.05 b 0.15 0.25 D 2.00 BSC D2 0.80 1.00 E 2.00 BSC E2 0.55 0.65 e 0.40 BSC K 0.25 −−− L 0.30 0.50 L1 0.40 0.60 SOLDERING FOOTPRINT* 0.66 2.30 12X 0.23 1 0.93 11X 0.56 0.63 DIMENSIONS: MILLIMETERS ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCP5612/D 0.40 PITCH 0.91 ...