AS3691A-ZQFT austriamicrosystems, AS3691A-ZQFT Datasheet
AS3691A-ZQFT
Specifications of AS3691A-ZQFT
Related parts for AS3691A-ZQFT
AS3691A-ZQFT Summary of contents
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... Datasheet AS3691 4 Precision 400mA Current Sources for RGB and Single Color Leds 1 General Description The AS3691 (AS3691A and AS3691B) features four high precision current sources for lighting four LED strings (RGB or single color leds). Each of the four currents sources can be controlled independently by PWM inputs ...
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... Figure 2 – Application Diagram of AS3691 for RGB Lighting VDDG VDDB VDDR Rvdd Cvdd 100nF UVG UVB UVR VREG UV1 AS3691 D1 Ref Overtemp Pad VSS ON1 VSS PWMG PWMB PWMR www.austriamicrosystems.com (ptr) CURR1 UV3 UV2 CURR2 RFB1 RES1 ON2 RFB2 RES2 ON3 Ri1 Ri2 Revision 2.3 VDDG ...
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... Package Drawings and Markings ............................................................................................................... 17 10.1 QFN 4x4 Package Drawings and Marking .............................................................................................. 17 10.2 ePTSSOP Package Drawings and Marking............................................................................................ 19 10.3 DIE Delivery............................................................................................................................................ 20 11 Ordering Information .................................................................................................................................. 21 Revision History Revision Date 2.3 30.10.2007 www.austriamicrosystems.com (ptr) Owner - Added Trays as delivery option (order code AS3691A- ptr ZQFT) Revision 2.3 Description ...
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... Digital Input S Supply Pin Table 2 – Pin Descriptions Pin Number Pin Number QFN ePTSSOP Pin Name Package Package www.austriamicrosystems.com (ptr) UV2 CURR2 UV3 RES1 ON2 RFB2 RES2 ON3 Description Type Description AI/O Current Source 1 Output CURR1 Connect to current set resistor R1 directly at ...
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... Pad Pad www.austriamicrosystems.com (ptr) Type Description Current source CURR4 control; internal pullup resistor to VREG (can be left open, if CURR4 is DI always switched on) ON4 High … 100% Current Low … 5% Current Automatic supply regulation for CURR4; if not AO UV4 used, leave open Digital Test input; Leave open or connect to ...
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... Main Supply VDD Main Supply Voltage Tolerance TOL Supply (shunt regulated by VREG INT AS3691) VREG EXT IVREG Supply Current T Ambient Temperature AMB www.austriamicrosystems.com (ptr) Min Max Unit >17 V See notes -0.3 7.0 V Applicable for pin VREG -0.3 VREG+ V Applicable for 5V pins -0 ...
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... Table 6 – Digital Input pins characteristics for pins ON1, ON2, ON3 and ON4 Symbol Parameter V High Level Input voltage IH V Low Level Input voltage IL R Pullup resistor PU f Input Frequency Range ON www.austriamicrosystems.com (ptr) Min Typ Max Unit at 400mA; total power dissipation 0.9 15.0 V limit PT must not be exceeded 0.41 15 100mA ONx = high ...
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... Figure 5 – Output Current versus Voltage on Current Source – Low Current Range Figure 6 – Internal voltage reference versus Temperature, V(CURR1) = 2.0V, Ri1=250Ω 253 252 251 250 249 248 247 0 20 www.austriamicrosystems.com (ptr) 5 VCURR1 [ VCURR1 [ Temperature [C] Revision 2 ICURR = 1 100 120 ...
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... AS3691 Datasheet Figure 7 – Output Currnent versus Temperature, V(CURR1) = 2.0V, Ri1 = 2.5Ω (Note: temperature coefficient of Ri1 = -200ppm/°C) 102 101 100 Figure 8 – Cross coupling of pwm on CURR1 to CURR2; I(CURR1) = 100mA to 4mA, I(CURR2) = 100mA; AS3691A www.austriamicrosystems.com (ptr Temperature [C] Revision 2 ...
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... AS3691 Datasheet Figure 9 – PWM performance of Current Source CURR1, I(CURR1) changed between 400mA (ON1=1) and 20mA (ON1=0); AS3691A Figure 10 – Shunt Regulator Voltage VREG versus supply VDD with Rfb=1kΩ www.austriamicrosystems.com (ptr VDD [V] Revision 2 ...
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... R1 = 47kΩ 10kΩ 5kΩ 500Ω 1uF, I(CURR1) = 400mA/20mA (Ri1=0.625Ω) 3 OSRAM Golden Dragon in series as load between CURR1 and VDD Input signal on pin ON1: PWM signal with f=10kHz, 80% duty cycle Figure 12 – Parallel Current (for measurement of I1 remove current set resistor R1) 0,7 0,6 0,5 0,4 0,3 0,2 0 www.austriamicrosystems.com (ptr VCURR1 [V] Revision 2 ...
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... AS3691 directly. In this case remove the resistor Rvdd and connected this supply directly to VREG. 8.2 Overtemperature Protection If the junction temperature inside the AS3691 rises above T www.austriamicrosystems.com (ptr) for part numbers starting with AS3691A for part numbers starting with AS3691B − ...
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... Vref + MAX Therefore even if a led string is broken (then UVx is forced to 0V) or some leds are shorted, the supply always stays within the limits VDDx and VDDx MIN www.austriamicrosystems.com (ptr) VDDx UVx Vfb R2 C1 Feedback resistor divider (part of DCDC converter circuit) .) can be set accurately by the resistors R1 and R2. The maximum output ...
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... Figure 14 – Typical AS3691 System for RGB (back-)lighting; several AS3691 can be cascaded Main supply ... Vc Vc ... D1 Overtemp AS3691 www.austriamicrosystems.com (ptr) VDDR DCDC Converter for VDDR Voltage Feedback UVR input for DCDC Feedback resistor divider (part of DCDC converter circuit) VDDG DCDC Converter ...
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... Csup (100nF) is only required, if there are long connections between the DCDC converter and the AS3691 (>0.3m). The wire length between the Csup capacitor and the CURRx pin on AS3691 should not exceed 0.3m. If this cannot be guaranteed, add additional capacitors of 100nF to the pins CURRx. www.austriamicrosystems.com (ptr) Csup 100nF ...
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... Therefore using automatic supply regulation, the ambient temperature can 110°C under identical conditions. 9.2 Layout Recommendations See austriamicrosystems ‘AN3691_TECH_Module Description’ layout example for the AS3691. Layout Checklist 1. Use the bottom layer as ground plane and minimize the number and the length of connections within this layer 2 ...
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... AS3691 Datasheet 10 Package Drawings and Markings 10.1 QFN 4x4 Package Drawings and Marking Figure 16 – QFN 24 – 4x4mm Marking: Line 1: austriamicrosystems Logo Line 2: AYWWIZZ A = Pb-Free Identifier Y = Year WW = Week I = Plant Identifier ZZ = Letters of Free Choice Line 3: AS3691, AS3691A or AS3691B www.austriamicrosystems.com (ptr) Revision 2 ...
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... AS3691 Datasheet Figure 17 – QFN 24 – 4x4mm Detail Dimensions www.austriamicrosystems.com (ptr) Revision 2 ...
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... AS3691 Datasheet 10.2 ePTSSOP Package Drawings and Marking Figure 18 – ePTSSOP Package Drawing www.austriamicrosystems.com (ptr) Revision 2 ...
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... AS3691 Datasheet Marking: Line 1: austriamicrosystems Logo Line 2: AYWWIZZ A = Pb-Free Identifier Y = Year WW = Week I = Plant Identifier ZZ = Letters of Free Choice Line 3: AS3691, AS3691A or AS3691B Figure 19 – ePTSSOP Package Drawing Detail Dimenstions 10.3 DIE Delivery Please contact austriamicrosystems for die delivery. www.austriamicrosystems.com (ptr) Revision 2 ...
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... AS3691 Datasheet 11 Ordering Information Table 7 – Ordering Information Part Number Marking Package Type 1) AS3691A AS3691A-ZQFP -or- 1) AS3691 AS3691A-ZQFT AS3691A 2) AS3691A-ZSDF (AS3691A) AS3691B-ZQFP AS3691B 2) AS3691B-ZSDF (AS3691B) 2) AS3691A-ZTSP AS3691A AS3691B-ZTSP AS3691B Note: 1) AS3691 with 10mV on VRES for ON=0 can be marked with ‘AS3691’ or ‘AS3691A’ (identical ...
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... The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein ...