NCP5604B ON Semiconductor, NCP5604B Datasheet
NCP5604B
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NCP5604B Summary of contents
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... Driver The NCP5604A and NCP5604B products are multiple output LED drivers dedicated to the display back light. The NCP5604A drives LEDs, the NCP5604B version being dedicated to the three LED applications. The two parts share a common built−in DC/DC converter, based on a charge pump structure, including the new 1.33X mode of operation, improving the efficiency over the full input battery supply voltage span over 90% ...
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... NCP5604A, NCP5604B Vbat C4 GND 4.7 mF/6 VBAT 2 CONTROL IREF 100 k GND 4 AGND 9 PGND Figure 1. Typical Multiple White LED Driver http://onsemi.com 220 nF/ C2N 13 C2P 11 C1N U1 NCP5604A 10 C1P 12 VOUT LWY87S LWY87S D2 LWY87S D1 LWY87S 2 GND ...
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... Vbat C4 1 GND 4.7 mF/ DIGITAL CONTROL R1 GND 3 100 k ANALOG CONTROL 4 AGND OVERTEMPERATURE Figure 2. NCP5604A Simplified Block Diagram NCP5604A, NCP5604B 220 nF 220 nF 220 CHARGE PUMP DC−DC CONVERTER OVERVOLTAGE Vbat http://onsemi.com GND 1 mF/10 V Vout ...
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... Vbat C4 1 GND 4.7 mF/ DIGITAL CONTROL R1 GND 3 100 k ANALOG CONTROL 4 AGND OVERTEMPERATURE Figure 3. NCP5604B Simplified Block Diagram (Pin 5 disconnected) NCP5604A, NCP5604B 220 nF 220 nF 220 CHARGE PUMP DC−DC CONVERTER OVERVOLTAGE Vbat http://onsemi.com mF/10 V Vout ...
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... The current is limited maximum (Note 2). NCP5604B: This pin is not connected. This pin sinks to ground and monitors the current flowing into the third LED, intended to be used in backlight application. The current is limited maximum (Note 2). ...
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... Human Body Model (HBM): JESD22−A114. Machine Model (MM): JESD22−A115. 5. The maximum package power dissipation limit must not be exceeded. 6. Latchup current maximum rating: " 100 mA per JEDEC standard: JESD78. 7. Moisture Sensitivity Level (MSL): per IPC/JEDEC standard: J−STD−020A. NCP5604A, NCP5604B Symbol V BAT Vout ...
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... The total output current is evenly distributed across the external LED. 9. LED4 is not connected in the NCP5604B version. 10. The NCP5604B controls total in the three current mirrors, the extra 25 mA available current from the DC−DC converter being available for external purpose. NCP5604A, NCP5604B = +25° ...
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... Figure 4). In any case, no voltage shall be forced at I pin, either downward or upward. The reference current is multiplied by the constant k = 260 to yield the output load current. Since the reference NCP5604A, NCP5604B = +25°C, Min & Max values are referenced −40°C to +85°C ambient A Rating pin voltage either higher or lower than the 600 mV specified. = +25° ...
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... Figure 8. Typical Single and Double LED −405C 255C The applications using three LED shall use the 855C NCP5604B version to make profit of the highest efficiency (see Figure 9). In this case, LED4 is not connected and pin 5 is internally unconnected. 4.5 5.0 5.5 REF http://onsemi.com 9 ...
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... C1N VOUT D2 D3 LWY87S Figure 9. Using the NCP5604B to Drive a Three LED Layout Finally, an external network can be connected across Vout and ground, but the current through such network will not be regulated by the NCP5604A chip (see Figure 10). On top of that, the total current out of the Vout pin shall be limited to 100 mA ...
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... Figure 13, gives good results since the current depends mostly upon the quality of resistor R2. ENABLE PWM 12 k GND Figure 14. Basic Analog PWM Dimming Control NCP5604A, NCP5604B ENABLE High Out Figure 13. Basic Analog Dimming Control R2 BC846BDW 15 k GND GND http://onsemi ...
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... The waveforms given in Figure 16 illustrate the functional operation. Similarly, the input current is limited 300 mA peak (typical) as depicted in Figure 17. Figure 16. Output Short Circuit Operation NCP5604A, NCP5604B Figure 17. Input Current Short Circuit Operation I =80 mA out I ...
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... NCP5604A, NCP5604B 220 nF/10 V 220 nF/10 V 4.7 mF/ C3P U1 NCP5604 16 C3N S2 ENABLE VCC GND C5 GND 4.7 mF/6 POWER GND + + + Adjust PWM VCC Figure 19. Demo Board Schematic Diagram C4 GND 8 LED1 7 LED2 6 LED3 5 LED4 GND TP1 VREF GND R1 GND GND 330 k R2 BSS138 GND 6 GND ...
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... NCP5604A, NCP5604B Figure 20. Silk View Top Layer Figure 21. Demo Board Printed Circuit Layout http://onsemi.com 14 ...
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... Literature Distribution Center for ON Semiconductor P.O. Box 61312, Phoenix, Arizona 85082−1312 USA Phone: 480−829−7710 or 800−344−3860 Toll Free USA/Canada Fax: 480−829−7709 or 800−344−3867 Toll Free USA/Canada Email: orderlit@onsemi.com NCP5604A, NCP5604B PACKAGE DIMENSIONS WQFN16 MT SUFFIX CASE 488AK−01 ...