MAX17061ETI+ Maxim Integrated Products, MAX17061ETI+ Datasheet
MAX17061ETI+
Specifications of MAX17061ETI+
Related parts for MAX17061ETI+
MAX17061ETI+ Summary of contents
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... Preset 25mA o Open and Short LED Protections o Output Overvoltage Protection o 0.15Ω Internal HV Power MOSFET (45V max) o Wide Input-Voltage Range from 4.5V to 26V o 500kHz/750kHz/1MHz Selectable Switching Frequency o Small 28-Pin, 4mm x 4mm, Thin QFN package PART MAX17061ETI+ + Denotes a lead-free package ISET CCV PWM ...
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White LED Driver with SMBus for LCD Panel Applications ABSOLUTE MAXIMUM RATINGS IN to GND ..............................................................-0.3V to +28V FB_, LX_ to GND ....................................................-0.3V to +45V PGND_ to GND......................................................-0.3V to +0. PWMI, SDA, SCL to GND ...
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SMBus for LCD Panel Applications ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V CCV T = 0°C to +85°C, unless otherwise noted. Typical values are PARAMETER INPUT LEAKAGE PWMI Leakage Current ISET, FSET ...
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White LED Driver with SMBus for LCD Panel Applications ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V CCV T = 0°C to +85°C, unless otherwise noted. Typical values are PARAMETER PWM FILTER ...
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SMBus for LCD Panel Applications ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V CCV T = -40°C to +85°C, unless otherwise noted. Typical values are PARAMETER BOOST CONVERTER LX On-Resistance 20mA from LX_ ...
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White LED Driver with SMBus for LCD Panel Applications ELECTRICAL CHARACTERISTICS (continued) (Circuit of Figure 12V CCV T = -40°C to +85°C, unless otherwise noted. Typical values are PARAMETER FAULT PROTECTION ...
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SMBus for LCD Panel Applications (Circuit of Figure 12V 0.022µ CCV 10 series x 4 parallel strings +25°C, unless otherwise noted.) A BOOST CONVERTER EFFICIENCY vs. INPUT VOLTAGE (BRIGHTNESS = 100%) ...
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White LED Driver with SMBus for LCD Panel Applications (Circuit of Figure 12V 0.022µ CCV 10 series x 4 parallel strings +25°C, unless otherwise noted.) A SWITCHING WAVEFORMS (V = ...
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SMBus for LCD Panel Applications (Circuit of Figure 12V 0.022µ CCV 10 series x 4 parallel strings +25°C, unless otherwise noted.) A LED-OPEN FAULT PROTECTION (BRIGHTNESS = 100%, LED OPEN ON ...
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White LED Driver with SMBus for LCD Panel Applications PIN NAME LED String 3 Cathode Connection. FB3 is the open-drain output of an internal regulator, which controls 1 FB3 current through FB3. FB3 can sink up to 30mA. If ...
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SMBus for LCD Panel Applications PIN NAME 22 V Boost Reg ul ator ate Byp ass Linear Regulator Output capacitor ...
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White LED Driver with SMBus for LCD Panel Applications The MAX17061 includes a 5V linear regulator that pro- vides the internal bias and gate drive for the step-up controller. When an external 5V is available, the internal LDO can ...
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SMBus for LCD Panel Applications IN 5V LINEAR REGULATOR OSCILLATOR 3-LEVEL OSC COMPARATOR CCV REF ADJ ISET FSET PWMO "< = 1" A PWMI D "1" DIMMING 0x03 BLOCK DIAGRAM SDA SCL Figure 2. Control Circuit ...
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White LED Driver with SMBus for LCD Panel Applications The MAX17061 includes power-on reset (POR) and undervoltage lockout (UVLO) features. POR resets the fault latch and sets all the SMBus registers to their POR values. POR occurs when V ...
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SMBus for LCD Panel Applications Table 1. Frequency Selection OSC PIN CONNECTION SWITCHING FREQUENCY (kHz) GND Open V CC Frequency Selection A tri-level OSC input sets the internal oscillator frequen- cy for step-up converter, as shown in Table 1. High-fre- ...
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White LED Driver with SMBus for LCD Panel Applications DPWM DPWM t DPWM I LEDMAX I LED 0A Figure 4. LED Current Control by DPWM Signal in Dimming Full-Scale ...
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... PWMI interface is used for brightness control; the MAX17061 cannot run without the SMBus interface. For sister products without the SMBus interface, contact MAXIM Integrated Products, Inc. Dimming Control Register Descriptions The MAX17061 includes four registers to monitor and control brightness, fault status, identification, and oper- ating mode. The slave address is 0b0101100. Brightness control register: Address is 0x00. This register is both readable and writable for all 8 bits, BRT0– ...
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White LED Driver with SMBus for LCD Panel Applications Table 2. Operating Modes Selected by Device Control Register Bits 1 and 2 PWM_MD PWM_SEL Fault/Status Register: Address is 0x02. This register has 6 ...
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SMBus for LCD Panel Applications The list of ID values for vendors is shown in Table 3. Thermal Shutdown The MAX17061 includes a thermal-protection circuit. When the local IC temperature exceeds +160°C (typ), the controller and current sources shut down ...
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White LED Driver with SMBus for LCD Panel Applications To ensure the stable operation, the MAX17061 includes slope compensation, which sets the minimum inductor value. In continuous-conduction mode (CCM), the mini- mum inductor value is calculated with the following ...
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SMBus for LCD Panel Applications The equations used here include a constant LIR, which is the ratio of the inductor peak-to-peak ripple current to the average DC inductor current at the full load cur- rent. The controller operates in DCM ...
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White LED Driver with SMBus for LCD Panel Applications The peak-inductor current at minimum input voltage is calculated as follows: 100 PEAK ...
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SMBus for LCD Panel Applications LED Selection and Bias The series/parallel configuration of the LED load and the full-scale bias current have a significant effect or regula- tor performance. LED characteristics vary significantly from manufacturer to manufacturer. Consult the respec- ...
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... LX node from one side of the PCB to the other. Use DC traces as shield if necessary. Refer to the MAX17061 evaluation kit for an example of proper board layout. 24 ______________________________________________________________________________________ Pin Configuration TOP VIEW CCV 25 OV MAX17061ETI+ ISET 26 FB1 27 28 FB2 THIN QFN 4mm x 4mm Chip Information TRANSISTOR COUNT: 21,800 PROCESS: BiCMOS SDA 13 FSET ...
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SMBus for LCD Panel Applications (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) ______________________________________________________________________________________ 8-String White LED Driver with Package Information 25 ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 26 © 2008 Maxim Integrated Products Package Information (continued registered trademark of Maxim Integrated Products, Inc ...