IS31LT3352-V2GRLS2-TR ISSI, IS31LT3352-V2GRLS2-TR Datasheet
IS31LT3352-V2GRLS2-TR
Specifications of IS31LT3352-V2GRLS2-TR
Related parts for IS31LT3352-V2GRLS2-TR
IS31LT3352-V2GRLS2-TR Summary of contents
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... After the ambient temperature falls down to a safe temperature，the current will return to the set value. The IS31LT3352 can be connected as LED drivers’ chain with the same temperature compensation percentage. In this chain, every IS31LT3352’s ADJO output pin drives next stage’ ...
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... SYSTEM APPLICATION IS31LT3352 Note: Each IS31LT3352 can driver up to three slave chips in the next stages, and it is recommend no more than three stages are used for the current coherence, therefore thirteen IS31LT3352s are allowed in one system Integrated Silicon Solution, Inc. – www.issi.com Rev ...
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... IS31LT3352 PIN CONFIGURATIONS Package SOP8 PIN DESCRIPTION Pin NO. Description Name Input voltage (6V to 40V). Decouple to ground with 1μF or higher X7R ceramic capacitor close to device Connect resistor SENSE =0.1/R S The pin set the starting temperature of temperature compensation by connecting external resistor. ...
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... IS31LT3352 ORDERING INFORMATION Industrial Range: -40°C to +85°C Order Number Quantity per reel IS31LT3352-V1GRLS2-TR IS31LT3352-V2GRLS2-TR Integrated Silicon Solution, Inc. – www.issi.com Rev. A, 09/01/2011 Package 2,500 SOP-8, Lead-free 2,500 SOP-8, Lead-free V SENSE 91mV to 101mV 99mV to 110mV 4 ...
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... Conditions ADJI pin grounded ADJI pin floating Measured on I SENSE IS31LT3352-V1 pin with respect to V ADJI pin IN IS31LT3352-V2 floating V =0.1V SENSE Measured on ADJI pin with pin floating V falling ADJI V rising ADJI -5V ,V > < ...
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... IS31LT3352 ELECTRICAL CHARACTERISTICS (VIN=12V, Tamb=25°C unless otherwise stated) (NOTE 2) (continued) Symbol Parameter I LX switch leakage current LX(leak) V ADJO terminal voltage ADJO R LX Switch ‘On’ resistance LX I Continuous LX switch current LXmean Resistance between ADJI pin and R ADJI VREF Brightness control range at low ...
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... IS31LT3352 TYPICAL OPERATING CONDITIONS For typical application circuit ,at T amb 1 0.9 0.8 0.7 0.6 0 Vin(V) Efficiency vs. No. of LEDs L=100uH, Rs=0.33Ohm 1 0.9 0.8 0.7 0.6 0 Vin(V) Efficiency vs. No. of LEDs L=47uH, Rs=0.33Ohm Integrated Silicon Solution, Inc. – www.issi.com Rev. A, 09/01/2011 =25°C unless otherwise stated. 6 1LED ...
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... IS31LT3352 Typical operating conditions (continued) 1.201 1.2005 1.2 1.1995 1.199 1.1985 Vin(V) Vref vs. Vin over nominal supply voltage range 600 500 400 300 200 100 Supply Current vs. Vin (Operating) 1.4 1.2 1 0.8 0.6 0.4 0 300 600 Vadjo vs ...
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... ESR of this capacitor appears in series with the <1.2V] ADJI supply source impedance and lowers overall efficiency. = ADJI This capacitor has to supply the relatively high peak current to the coil and smooth the current ripple on the input supply. , the signal range from IS31LT3352 ADJI GND GND 9 ...
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... Capacitors with Y5V dielectric are not suitable for decoupling in this application and should not be used. Inductor selection Recommended inductor values for the IS31LT3352 are in the range 47μH to 220μH. Higher values of inductance are recommended at higher supply voltages and low output current in order to minimize errors due to switching delays, which result in increased ripple and lower efficiency ...
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... Too large R1 make Rth pin more sensitive to noise, too small R1 will make IC current consumption larger. From 1K to 100K recommended. R3 R2(NTC) An IS31LT3352 calculator is available from the ISSI to assist with temperature compensation design and here are some detail examples as below: (R2+R3)/R1*RS ADJI ...
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... IS31LT3352 400 350 300 250 200 150 100 ℃ ) B=4485, R1=48.6k, R2=100k, R3=0R 400 350 300 250 200 150 100 ℃ ) B=4485, R1=20.6k, R2=100k, R3=0R ...
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... The PCB trace from R1 to RTH pin should be as short as possible to reduce noise pickup. Because NTC thermistor R2 is mounted close to the LEDs and remote from IS31LT3352, the PCB trace from longer and pick up noise more easily. A 0.1uF capacitor from R pin to ground and close to the R ...
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... IS31LT3352 PACKAGE INFORMATION SOP-8 Integrated Silicon Solution, Inc. – www.issi.com Rev. A, 09/01/2011 14 ...