ncp5623 ON Semiconductor, ncp5623 Datasheet
ncp5623
Available stocks
Related parts for ncp5623
ncp5623 Summary of contents
Page 1
... NCP5623 Triple Output I2C Controlled RGB LED Driver The NCP5623 mixed analog circuit is a triple output LED driver dedicated to the RGB illumination or backlight LCD display. The built-in DC/DC converter is based on a high efficient charge pump structure with operating mode 1x and 2x. It provides a 94% peak efficiency ...
Page 2
... AGND 6 DIGITAL CONTROL SDA 7 SCL 9 Vbat R1 ANALOG GND 8 FUNCTIONS 56 k Figure 2. Simplified Block Diagram NCP5623 C1 220 NCP5623 CHARGE PUMP DC/DC CONVERTER OVER VOLTAGE Vbat BLUE GND GREEN PWM LED#1 GND RED PWM LED#2 GND PWM LED#3 CURRENT MIRRORS http://onsemi.com 2 C5 1.0 mF/10 V ...
Page 3
... Using low ESR ceramic capacitor, X5R type, is mandatory to optimize the Charge Pump efficiency and to reduce the EMI. 2. The peak current for each LED, the total charge pump output DC current being limited NCP5623 Description ) is connected to this pin, associated with C1N, ...
Page 4
... This device series contains ESD protection and exceeds the following tests: Human Body Model (HBM) ±2.0 kV per JEDEC standard: JESD22-A114 Machine Model (MM) ±200 V per JEDEC standard: JESD22-A115 4. The maximum package power dissipation limit must not be exceeded. 5. Moisture Sensitivity Level (MSL): 1 per IPC/JEDEC standard: J-STD-020A. NCP5623 Rating = +85°C (Note 4) A http://onsemi.com ...
Page 5
... RGB Output Current LED Matching MATCH @Vbat = 3 LED Fpwr Charge Pump Operating Frequency -40°C < Ta < 85°C E Efficiency @ Vbat = 3.6 V PWR - LED1 to LED3 = 5 mA 2.8 V (Total = 15 mA) - LED1 to LED3 = 20 mA 3.2 V (Total = 60 mA) NCP5623 Rating = 5.0 mA http://onsemi.com 5 Min Typ Max Unit 2.7 5.5 ...
Page 6
... Test guaranteed by design and fully characterized, not implemented in production. Chip functionnal, but no parameter guaranteed when Vbat is between 5.5 V & 7.0 V 7.0 V 5.5 V 4.2 V 3.0 V 2.8 V 2.0 V Figure 3. Understanding Integrated Circuit Voltage Limitations NCP5623 Rating Min 3 -3% 30 pin voltage either higher or lower than the 600 mV specified. The system is optimized with Rating Min 1.6 ...
Page 7
... Upward and Downward direction. The dimming function is controlled by the I2C interface: see Table 2. The NCP5623 chip is capable to drive the three LED pin and Ground. simultaneously, as depicted in Figure 1, but the load can be arranged to accommodate several LED if necessary in the pin ...
Page 8
... RLED2 RLED1 RLED0 *Note: according to the I2C specifications, the physical address is based on 7 bits out of the SDA byte, the 8 Since the NCP5623 is a receiver only, the R/W command is 0 and the hexadecimal byte send by the MCU is %0111 0000 = $70 B[7:5] : Internal Register Selection ...
Page 9
... NCP5623 The gradual dimming sequence must be set up before a new output current data byte is send to the NCP5623 . At this point, the brightness sequence takes place when the new data byte is acknowledged by the internal I2C decoder. Since the six registers are loaded on independent byte flow associated to the I2C address, any parameter of the NCP5623 chip can be updated ahead of the next function as depicted in Table 2 ...
Page 10
... PWM > $00 but < $1FF ³ the brightness of the associated LED is set depending upon the PWM modulation value 100 Figure 5. NCP5623 Typical Efficiency as a Function of the Vf NOTE: Efficiency is measured with the three PWM equal to 100% NCP5623 NCP5623 STEPS - PWM = $1F ³ ...
Page 11
... C1 220 C1P C1N 11 10 Vbat Vout 3 B-LED3 7 SDA 9 4 SCL G-LED2 6 GND 5 R-LED1 8 GND 2 IREF GND U1 GND NCP5623 Figure 8. Typical Torch Application http://onsemi.com mF/10 V GND NTJD1155L NTJD1155L ...
Page 12
... V GND C11 SP2 Select TxD/RxD SP1 GND JP2 X1 RS232 GROUND Figure 9. Multiple Functions NCP5623 Demo Board NCP5623 D1 LRTB-G6T mF/6. GND C1N 220 C1P ...
Page 13
... COPLANARITY APPLIES TO THE EXPOSED 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* 2.30 12X 0.23 1 0.40 PITCH 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 NCP5623/D 0.91 ...