LTC3220EPF-1-PBF LINER [Linear Technology], LTC3220EPF-1-PBF Datasheet
LTC3220EPF-1-PBF
Related parts for LTC3220EPF-1-PBF
LTC3220EPF-1-PBF Summary of contents
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FEATURES n Eighteen 20mA Universal Current Sources with 64-Step Linear Brightness Control n Independent On/Off, Brightness Level, Blinking and Gradation Control for Each Current Source Using 2 2-Wire I C Interface n Low Noise Multi-Mode Charge Pump (1x, 1.5x, 2x) ...
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... ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC3220EPF#PBF LTC3220EPF#TRPBF LTC3220EPF-1#PBF LTC3220EPF-1#TRPBF LTC3220IPF#PBF LTC3220IPF#TRPBF LTC3220IPF-1#PBF LTC3220IPF-1#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T unless otherwise noted. SYMBOL PARAMETER V Shutdown Current IN DV Shutdown Current CC Universal LED Current, 6-Bit Linear DACs, ULED = 1V Full-Scale LED Current Minimum (I ) LED Current ...
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LTC3220/LTC3220-1 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T unless otherwise noted. SYMBOL PARAMETER t Data Hold Time HD,DAT(OUT) t Input Data Hold Time HD,DAT(IN) t Data Setup Time SU,DAT t Clock Low Period LOW t Clock High ...
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TYPICAL PERFORMANCE CHARACTERISTICS 1x Mode Switch Resistance vs Temperature 0.80 0.75 0. 3. 3.6V 0. 3.9V IN 0.50 0.45 0.40 0.35 0.30 –40 –25 – ...
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LTC3220/LTC3220-1 TYPICAL PERFORMANCE CHARACTERISTICS 1.5x Mode V Current CPO (I – 1.5I ) VIN CPO 120 180 240 300 I (mA) CPO 3220 G13 ULED Current ...
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PIN FUNCTIONS SDA (Pin 12): Input Data for the Serial Port. Serial data is shifted in one bit per clock cycle to control the LTC3220/ LTC3220-1. The logic level is referenced to DV C1P , C2P , C1M, C2M (Pins ...
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LTC3220/LTC3220-1 OPERATION Power Management The LTC3220/LTC3220-1 use a switched capacitor charge pump to boost CPO as much as 2 times the input voltage up to 5.1V. The part starts mode. In this mode connected directly ...
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OPERATION If the LED forward voltage is 3.8V and the current sources require 100mV, the advantage voltage for 1.5x mode is 3.1V • 1.5 – 3.8V – 0.1V or 750mV. Notice that if the input voltage is raised to 3.2V, ...
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LTC3220/LTC3220-1 OPERATION Blinking Each universal output (ULED1 to ULED18) can be set to blink with an on time of 0.156 seconds, or 0.625 seconds and a period of 1.25 seconds, or 2.5 seconds via the I port. The blinking rate ...
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OPERATION sub-address register is then written to, followed by the data register. Each data register has a sub-address. After the data register has been written a load pulse is created after the stop bit. The load pulse transfers all of ...
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LTC3220/LTC3220-1 OPERATION Sub-Address Byte MSB LSB ...
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OPERATION Data Bytes REG1 to REG18, Universal LED 6-bit linear DAC data with blink/gradation. Sub-Address 00001 to 10010 per Sub-Address Table Blink/Gradation/Dropout Enable Normal Blink Enabled Gradation Enabled GPO Mode* Strong Pull-Down Mode Current Limited Mode High Impedance/Off *(Gradation/Blink/Dropout Off) ...
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LTC3220/LTC3220-1 OPERATION Bus Speed 2 The I C port is designed to be operated at speeds up to 400kHz. It has built-in timing delays to ensure correct operation when addressed from an I device. It also contains input fi lters ...
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OPERATION Bus Write Operation The master initiates communication with the LTC3220/ LTC3220-1 with a Start condition and a 7-bit address fol- lowed by the Write Bit R the address matches that of the LTC3220/LTC3220-1, the LTC3220/LTC3220-1 return ...
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LTC3220/LTC3220-1 APPLICATIONS INFORMATION V , CPO Capacitor Selection IN The style and value of the capacitors used with the LTC3220/ LTC3220-1 determine several important parameters such as regulator control loop stability, output ripple, charge pump strength and minimum start-up time. ...
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APPLICATIONS INFORMATION Flying Capacitor Selection Warning: Polarized capacitors such as tantalum or aluminum should never be used for the fl ying capaci- tors since their voltage can reverse upon start-up of the LTC3220/LTC3220-1. Ceramic capacitors should always be used for ...
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LTC3220/LTC3220-1 APPLICATIONS INFORMATION Power Effi ciency To calculate the power effi ciency (η LED driver chip, the LED power should be compared to the input power. The difference between these two numbers represents lost power whether it is ...
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PACKAGE DESCRIPTION 2.64 ± 0.05 2.40 REF 4.50 ± 0.05 3.10 ± 0.05 2.64 ± 0.05 RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED 4.00 ± 0.10 PIN 1 TOP MARK (NOTE 6) ...
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LTC3220/LTC3220-1 TYPICAL APPLICATION Cellular Phone Multi-Display LED Controller with Auxiliary Current Source Output 2.2μF 2.2μF C1P C1M C2P C2M V V CPO IN IN 2.2μF 4.7μF LTC3220 LTC3220 ULED1- 0.1μF 2 SCL/SDA I C RST ...