ncp5623b ON Semiconductor, ncp5623b Datasheet
![no-image](/images/manufacturer_photos/0/4/495/on_semiconductor_sml.jpg)
ncp5623b
Available stocks
Related parts for ncp5623b
ncp5623b Summary of contents
Page 1
... NCP5623B Triple Output I2C Controlled RGB LED Driver The NCP5623B 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
... Vbat AGND 6 DIGITAL CONTROL SDA 7 SCL 9 Vbat R1 ANALOG GND 8 FUNCTIONS 62 k Figure 2. Simplified Block Diagram C3 220 NCP5623B CHARGE PUMP DC/DC CONVERTER OVER VOLTAGE Vbat LED3 GND LED2 PWM LED#1 GND LED1 PWM LED#2 GND PWM LED#3 CURRENT MIRRORS http://onsemi.com 2 C2 1.0 mF/10 V ...
Page 3
PIN ASSIGNMENT PIN Name Type 1 C1P POWER One side of the external charge pump capacitor (C pin 12 (Note 1). 2 GND POWER This pin is the GROUND signal for the analog and digital blocks and must be connected ...
Page 4
MAXIMUM RATINGS Symbol V Power Supply (see Figure 3) BAT Vout Output Power Supply SDA, SCL, Digital Input Voltage SHDI2C Digital Input Current ESD Human Body Model 1500 100 pF (Note 3) Machine Model LLGA12 ...
Page 5
POWER SUPPLY SECTION: (Typical values are referenced +25°C, Min & Max values are referenced −40°C to +85°C ambient temperature, unless otherwise A noted), operating conditions 2.85 V < Vbat < 5.5 V, unless otherwise noted. Pin Symbol ...
Page 6
ANALOG SECTION: (Typical values are referenced +25°C, Min & Max values are referenced −40°C to +85°C ambient temperature, unless otherwise A noted), operating conditions 2.85 V < Vbat < 5.5 V, unless otherwise noted. Pin Symbol 8 ...
Page 7
... Note forces ILED to zero with and yields the same LED current LOAD CONNECTION The primary function of the NCP5623B is to control three LED arranged in the RGB color structure (reference out OSRAM LATB G66x). The brightness of each LED is independently controlled by a set of dedicated PWM structure embedded into the silicon chip ...
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 NCP5623B 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
... REF The gradual dimming sequence must be set up before a new output current data byte is send to the NCP5623B . 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 ...
Page 10
... Figure 4. Output Current Programmed Value ( ILED = F(Step) ) 100 Figure 5. NCP5623B Typical Efficiency as a Function of the Vf NOTE: Efficiency is measured with the three PWM equal to 100% +Vcc MCU I2C Port GND PWM OPERATION The built−in PWM are fully independent and can be programmed to any value during the normal operation of the NCP5623B chip ...
Page 11
... 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 NCP5623B/D 0.91 ...