austriamicrosystems AG is now ams AG The technical content of this austriamicrosystems datasheet is still valid. Contact information: Headquarters: ams AG Tobelbaderstrasse 30 8141 Unterpremstaetten, Austria Tel: +43 (0) 3136 500 0 e-Mail: [email protected] Please visit our website at www.ams.com AS3691 Datasheet Datasheet AS3691 4 Precision 400mA Current Sources for RGB and Single Color Leds 1 General Description 2) 15V is sufficient for most applications as the AS3691 dose not switch off the LED current completely am lc s on A te G nt st il Patent Pending lv 4 x up to 0.4A constant current outputs Programmable with external resistors 4 independent PWM inputs Absolute current accuracy +/-0.5% ’ Automatic Supply Regulation’ to reduce power dissipation1) 1) al id 2 Key Features Very wide output voltage current source voltage compliance − Down to 0.41V 2) − Up to 15V Integrated overtemperature protection Separate sense pads (Rfb1-Rfb4) for easy and precise PCB Layout Package − DIE − QFN24 4x4mm − eP-TSSOP The AS3691 (AS3691A and AS3691B) features four high precision current sources for lighting of up to four LED strings (RGB or single color leds). Each of the four currents sources can be controlled independently by PWM inputs. The full scale current value is set by external resistors. 3 Applications General Lighting Backlighting RGB Backlighting for LCD TV/Monitors with White Color Balancing 4 Application Diagrams Figure 1 – Application Diagram of AS3691 for Single Color Lighting VDD Csup 100nF VDD Rvdd Cvdd 100nF ca UV VREG CURR1 ni UV1 AS3691 UV2 CURR2 Vc UV3 CURR3 Vc UV4 UV CURR4 Vc Vc ch D1 Ref T1 I1 Te Overtemp Pad VSS T2 I2 R1 ON1 RFB1 T3 R2 RES1 ON2 RFB2 T4 I3 R3 RES2 ON3 Ri1 Ri2 RFB3 I4 R4 RES3 ON4 Ri3 RFB4 RES4 Ri4 VSS VSS PWM PWM www.austriamicrosystems.com (ptr) Revision 2.3 1 - 22 AS3691 Datasheet Figure 2 – Application Diagram of AS3691 for RGB Lighting VDDG VDDG VDDB VDDB VDDR VDDR Rvdd al id Cvdd 100nF UVG UVG UVB UVB UVR UVR CURR1 AS3691 UV3 CURR2 Vc Ref Vc T1 Pad T2 PWMB Vc VSS ON1 RFB1 R2 RES1 ON2 RFB2 T4 I3 R3 RES2 ON3 Ri2 RFB3 I4 R4 RES3 ON4 Ri3 RFB4 RES4 Ri4 VSS PWMG PWMB PWMR Te ch ni ca PWMR CURR4 T3 I2 R1 Ri1 PWMG UV4 Vc I1 Overtemp VSS CURR3 am lc s on A te G nt st il D1 UV2 lv UV1 VREG www.austriamicrosystems.com (ptr) Revision 2.3 2 - 22 AS3691 Datasheet Table of Contents 1 General Description ......................................................................................................................................... 1 2 Key Features.................................................................................................................................................... 1 3 Applications...................................................................................................................................................... 1 4 Application Diagrams ....................................................................................................................................... 1 5 Pinout............................................................................................................................................................... 4 Pin Assignments ....................................................................................................................................... 4 5.2 Pin Descriptions........................................................................................................................................ 4 6 al id 5.1 Characteristics ................................................................................................................................................. 6 Absolute Maximum Ratings ...................................................................................................................... 6 6.2 Operating Conditions ................................................................................................................................ 6 6.3 Electrical Characteristics........................................................................................................................... 7 7 lv 6.1 Typical Operation Characteristics .................................................................................................................... 8 8 Detailed Functional Description ..................................................................................................................... 12 Shunt Regulator...................................................................................................................................... 12 8.2 Overtemperature Protection.................................................................................................................... 12 8.3 Automatic Supply Regulation.................................................................................................................. 13 9 am lc s on A te G nt st il 8.1 Application Information .................................................................................................................................. 14 9.1 Design Example...................................................................................................................................... 15 9.1.1 Using Automatic Supply Regulation................................................................................................. 16 9.2 Layout Recommendations ...................................................................................................................... 16 10 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 ca Revision History Revision Owner Description 30.10.2007 ptr - Added Trays as delivery option (order code AS3691AZQFT) Te ch ni 2.3 Date www.austriamicrosystems.com (ptr) Revision 2.3 3 - 22 AS3691 Datasheet 5 Pinout 5.1 Pin Assignments Figure 3 – Pin Usage UV1 CURR1 AS3691 UV2 CURR2 Vc UV3 CURR3 Vc UV4 CURR4 al id VREG Vc Vc D1 T1 I1 Overtemp R1 T3 I2 R2 T4 I3 R3 I4 R4 am lc s on A te G nt st il Pad T2 lv Ref VSS ON1 RES1 ON2 RFB1 RES2 ON3 RFB2 RFB3 RES3 ON4 RFB4 RES4 5.2 Pin Descriptions Table 1 – Pin Type Descriptions Pin Type AI/O Description Analog Pin Analog Input Pin AO Analog Output Pin DI Digital Input S Supply Pin ca AI Table 2 – Pin Descriptions Pin Number QFN Package Pin Number ePTSSOP Package Pin Name 1 10 Description CURR1 AI/O Current Source 1 Output 11 RFB1 AI Connect to current set resistor R1 directly at resistor itself 3 12 nc nc Leave open 4 13 RFB4 AI Connect to current set resistor R4 directly at resistor itself 5 14 CURR4 AI/O Current Source 4 Output 6 15 RES4 AI/O Connect to current set resistor R4 Te ch 2 ni Type www.austriamicrosystems.com (ptr) Revision 2.3 4 - 22 AS3691 Datasheet Pin Number QFN Package Pin Number ePTSSOP Package Pin Name Type Description 16 ON4 DI 8 17 UV4 AO Automatic supply regulation for CURR4; if not used, leave open 9 18 TEST AI Digital Test input; Leave open or connect to VSS; internal pulldown to VSS 10 19 UV3 AO Automatic supply regulation for CURR3; if not used, leave open Current source CURR3 control; internal pullup resistor to VREG (can be left open, if CURR3 is always switched on) High … 100% Current Low … 5% Current lv al id 7 Current source CURR4 control; internal pullup resistor to VREG (can be left open, if CURR4 is always switched on) High … 100% Current Low … 5% Current 20 ON3 DI 12 21 RES3 AI/O Connect to current set resistor R3 13 22 CURR3 AI/O Current Source 3 Output 14 23 RFB3 AI Connect to current set resistor R3 directly at resistor itself 15 24 VREG S Shunt regulator supply; connect to Rvdd and Cvdd 16 1 RFB2 AI Connect to current set resistor R2 directly at resistor itself 2 CURR2 AI/O Current Source 2 Output 3 RES2 AI/O Connect to current set resistor R2 am lc s on A te G nt st il 11 17 18 19 20 DI 5 UV2 AO Automatic supply regulation for CURR2; if not used, leave open 6 VSS S 7 ch 8 VSS Supply connection AO Automatic supply regulation for CURR1; if not used, leave open ON1 DI Current source CURR1 control; internal pullup resistor to VREG (can be left open, if CURR1 is always switched on) High … 100% Current Low … 5% Current UV1 ni 22 23 ON2 ca 21 4 Current source CURR2 control; internal pullup resistor to VREG (can be left open, if CURR2 is always switched on) High … 100% Current Low … 5% Current 9 RES1 AI/O Pad Pad VSS S Connect to current set resistor R1 VSS Supply connection; add as many vias to ground plane as possible Te 24 www.austriamicrosystems.com (ptr) Revision 2.3 5 - 22 AS3691 Datasheet 6 Characteristics 6.1 Absolute Maximum Ratings Stresses beyond those listed in Table 1 may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in Section 5 Electrical Characteristics is not implied. Table 3 – Absolute Maximum Ratings Note al id Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Symbol Parameter Min Max Unit VDDMAX Supply for LEDs -0.3 >17 V See notes1 VINVREG VREG Supply voltage -0.3 7.0 V Applicable for pin VREG V Applicable for 5V pins2 V Applicable for CURR1, CURR2, CURR3 and CURR4 5V Pins -0.3 VIN15V 15V Pins -0.3 17 IIN Input Pin Current -25 +25 mA At 25ºC, Norm: Jedec 17 TSTRG Storage Temperature Range -55 125 °C Humidity 5 85 % Non condensing VESD Electrostatic Discharge -2000 2000 V Norm: MIL 883 E Method 3015 PT Total Power Dissipation 2.0 W At 50ºC, no airflow for QFN24 on 3 two layer FR4-Cu PCB PDERATE PT Derating Factor 23 TBODY Body Temperature during Soldering 260 am lc s on A te G nt st il Notes: 1. 2. 3. lv VIN5V VREG+ 0.3V mW/ See notes3 °C °C according to IPC/JEDEC J-STD020C As the AS3691 is not directly connected to this supply. Only the parameters VINVREG, VIN5V and VIN15V have to be guaranteed by the application All pins except CURR1, CURR2, CURR3 and CURR4 Depending on actual PCB layout and especially number of vias below the exposed pad – see layout recommendations; can be improved e.g. with Al-PCB or airflow ca 6.2 Operating Conditions Symbol Parameter Te VDDTOL Main Supply Voltage Tolerance VREGINT Min Typ Main Supply ch VDD ni Table 4 – Operating Conditions Supply (shunt regulated by AS3691) VREGEXT IVREG Supply Current TAMB Ambient Temperature www.austriamicrosystems.com (ptr) -20 Max Unit Note Not Limited V Supply is not directly connected to the AS3691 – see section ‘Shunt Regulator’ +20 % Applies only for supply VREG is connected via Rvdd 5.0 5.2 5.4 V If internally (shunt-)regulated by D1 4.5 4.75 5.0 V If externally supplied -20 25 Revision 2.3 2.5 Excluding current through shunt mA regulator (D1) – see section ‘Shunt Regulator’ 85 °C 6 - 22 AS3691 Datasheet 6.3 Electrical Characteristics Table 5 – Analog Electrical Characteristics Current Source CURR1 to CURR4 Voltage Compliance VCURR ICURR Current Source Range ICURR, Min Typ Max Unit 0.9 15.0 V 0.41 15.0 V at 100mA 10 400(1) mA -0.5 +0.5 % @25C TJUNCTION, excluding variation of external resistors; V(CURRx) <= 4.0V % (2) -20°C to +100°C TJUNCTION, -20°C to +85°C TAMB, excluding variation of external resistors; V(CURRx) <= 4.0V Current Source Tolerance TOL Note at 400mA; total power dissipation limit PT must not be exceeded -1.5 +1.5 ONx = high ICURRx = 250mV / Rix (x=1...4) al id Parameter lv Symbol Automatic Supply Regulation compare voltage 1.0 V See section ‘Automatic Supply Regulation’ VC,GAIN Automatic Supply Regulation gain 2.0 mA/V Voltage to current ratio; output current range typ 0 to 200uA I1-4 Parallel Current TOVTEMP Overtemperature Limit am lc s on A te G nt st il VC Notes: 1. 2. 1.0 mA V(CURRx) <= 15V 0.1 mA V(CURRx) <= 5.0V °C 140 Maximum junction temperature To obtain higher currents connect more than one current source in parallel Accuracy at +100°C guaranteed by design and verified by laboratory characterization Table 6 – Digital Input pins characteristics for pins ON1, ON2, ON3 and ON4 Parameter Min VIH High Level Input voltage VIL Low Level Input voltage Unit 2.3 VREG V 0.0 0.9 V Pullup resistor ni RPU Input Frequency Range Typ kΩ 70 0 20 Note Internal pullup resistor R1 to R4 to VREG This defines the actual input frequency seen on the input ON1 kHz to ON4; the basic frequency to generate the PWM signal is not limited by this parameter Te ch fON Max ca Symbol www.austriamicrosystems.com (ptr) Revision 2.3 7 - 22 AS3691 Datasheet 7 Typical Operation Characteristics Figure 4 – Output Current versus Voltage on Current Source – High Current Range 0,45 0,4 0,3 0,25 al id I(CURR1) [A] 0,35 0,2 0,15 0,1 lv 0,05 0 0 5 10 15 am lc s on A te G nt st il VCURR1 [V] Figure 5 – Output Current versus Voltage on Current Source – Low Current Range 12 I(CURR1) [mA] 10 8 6 4 2 0 0 2 4 6 8 10 12 14 ca VCURR1 [V] ni Figure 6 – Internal voltage reference versus Temperature, V(CURR1) = 2.0V, Ri1=250Ω 253 V(RES1) [mV] Te ch 252 251 250 249 ICURR1 = 248 V ( RES 1) Ri1 247 0 20 40 60 80 100 120 140 Temperature [C] www.austriamicrosystems.com (ptr) Revision 2.3 8 - 22 AS3691 Datasheet Figure 7 – Output Currnent versus Temperature, V(CURR1) = 2.0V, Ri1 = 2.5Ω (Note: temperature coefficient of Ri1 = -200ppm/°C) al id 101 100 99 98 0 10 20 30 40 60 70 am lc s on A te G nt st il Temperature [C] 50 lv I(CURR1) [mA] 102 Te ch ni ca Figure 8 – Cross coupling of pwm on CURR1 to CURR2; I(CURR1) = 100mA to 4mA, I(CURR2) = 100mA; AS3691A www.austriamicrosystems.com (ptr) Revision 2.3 9 - 22 AS3691 Datasheet am lc s on A te G nt st il lv al id 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 6 4 ca 3 2 ni VREG [V] 5 1 ch 0 5 10 15 20 25 30 35 40 VDD [V] Te 0 www.austriamicrosystems.com (ptr) Revision 2.3 10 - 22 AS3691 Datasheet am lc s on A te G nt st il lv al id Figure 11 – Automatic Supply Regulation dynamic performance using DCDC converter in regulation loop (as in section 7.3) R1 = 47kΩ, R2 = 10kΩ, R3 = 5kΩ, R4 = 500Ω, C1 = 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 I1 to I4 (for measurement of I1 remove current set resistor R1) 0,7 0,5 0,4 ca I(CURR1) [mA] 0,6 0,3 ni 0,2 0,1 0 5 10 15 VCURR1 [V] Te ch 0 www.austriamicrosystems.com (ptr) Revision 2.3 11 - 22 AS3691 Datasheet 8 Detailed Functional Description The AS3691 includes four high precision current sources (sinks). Each current source is set by an external resistor. For internal power supply an internal shunt regulator is used. Optionally an additional 5V device can be supplied as well with this shunt regulator. The current sources are individually controlled by four ON inputs. If the inputs ON are high or left open, then the current is set as follows: 250mV Ri1−4 al id ICURR1−4 = Setting the input ON to low the current is 10.0mV Ri1− 4 for part numbers starting with AS3691A lv ICURR1− 4 = The current is not zero to avoid high voltage jumps on the LEDs and supplies and therefore reduce EMI. 0.0mV + I1− 4 = I1− 4 Ri1− 4 for part numbers starting with AS3691B; I1-4 is the parallel current (see above Figure 11) am lc s on A te G nt st il ICURR1− 4 = 8.1 Shunt Regulator The supply of the AS3691 is generated from the high voltage supply. To obtain a 5V regulated supply, a series resistor Rvdd is used together with an internal zener diode (shunt regulator principle). An external capacitor Cvdd is used to filter the supply on the pin VREG. The external resistor Rvdd has to be choosen according to the following formula: Rvdd = VDDMIN − VVREGINTMAX IVREGMAX VDDMIN is the minimum voltage of the supply, where Rvdd is connected This ensures enough supply current (IVREGMAX) for the AS3691 under minimum supply voltage VDDMIN. ca If a stable 5V supply within the operating conditions limits of VREGEXT is already existing in the system it is possible to supply the AS3691 directly. In this case remove the resistor Rvdd and connected this supply directly to VREG. ni 8.2 Overtemperature Protection Te ch If the junction temperature inside the AS3691 rises above TOVTEMP, the current sources are switched off. www.austriamicrosystems.com (ptr) Revision 2.3 12 - 22 AS3691 Datasheet 8.3 Automatic Supply Regulation The purpose of the automatic supply regulation is to minimize the voltage supply to reduce the voltage across the current sources of the AS3691 (CURR1-CURR4 to VSS) and therefore reduce the power dissipation of the AS3691 and the complete system. The AS3691 automatically controls the minimum required supply voltage for the different led strings to support very power efficient systems for lighting using the following circuit (any off-theshelf dcdc converter or ldo with adjustable output voltage can be used): VDDx From main supply R1 Voltage Feedback Vfb input for DCDC R2 R3 R4 Csup 100nF UVx C1 UV1 CURR1 UV2 CURR2 am lc s on A te G nt st il Feedback resistor divider (part of DCDC converter circuit) lv DCDC Converter for VDD al id Figure 13 – Automatic Supply Regulation Circuit Vc Vc AS3691 The function of this circuit is as follows: All channels, which are connected to the supply VDDx should have their respective UV pin connected together to UVx (see above Figure and Section ‘Application Schematic’). If any of these current sources has a too low voltage, it gradually pulls the wire UVx low. (The analog gain between the current source CURRx and output UVx is defined by the parameter VC,GAIN.) Therefore the feedback pin Vfb of the dcdc converter is pulled low and the dcdc converter compensates this by increasing the voltage on VDDx to obtain the same feedback voltage as before. To stabilize this regulation loop, the low pass filter build by C1 and R4 is used (this should be the dominant pole for the regulation loop). The minimum output voltage VDDxmin can be set accurately by the resistors R1 and R2. The maximum output voltage VDDxmax is set by R1, R2, R3 and R4 (Vref is the internal voltage reference of the DCDC converter; usually Vref = Vfb): R1 + R2 R2 VDDxMAX = Vref R1 + R2 ( R3 + R4 ) R2 ( R3 + R4 ) ni ca VDDxMIN = Vref Te ch 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 VDDxMIN and VDDxMAX. www.austriamicrosystems.com (ptr) Revision 2.3 13 - 22 AS3691 Datasheet 9 Application Information Typical Application Schematic For RGB leds (and a white color balancing circuit) use the following application schematic including automatic supply regulation (feedback paths UVR, UVG, UVB): Main supply DCDC Converter for VDDR VDDR Voltage Feedback input for DCDC UVR al id Figure 14 – Typical AS3691 System for RGB (back-)lighting; several AS3691 can be cascaded DCDC Converter for VDDG VDDG Voltage Feedback input for DCDC UVG lv Feedback resistor divider (part of DCDC converter circuit) am lc s on A te G nt st il Feedback resistor divider (part of DCDC converter circuit) DCDC Converter for VDDB VDDB Voltage Feedback input for DCDC UVB Feedback resistor divider (part of DCDC converter circuit) VDDG VDDB VDDR ... ... UVG UVB UVR D1 Overtemp Vc Vc Vc Vc Vc ... D1 Overtemp Overtemp AS3691 AS3691 VSS ch Te www.austriamicrosystems.com (ptr) Vc D1 ni AS3691 Vc ca Vc ... PWMG PWMB PWMR 5V Supply 5V powered system (optional) PWMG PWMB PWMR Revision 2.3 14 - 22 AS3691 Datasheet A typical AS3691 for single color leds can be done as follows using automatic supply regulation (feedback path UV): Figure 15 – Typical AS3691 system for single color leds and supply regulation loop; serveral AS3691 can be cascaded VDD DCDC Converter for VDD ... ... Voltage Feedback input for DCDC al id Main supply Csup 100nF UV ... PWM (optional) Vc Vc D1 Overtemp ... Overtemp AS3691 AS3691 am lc s on A te G nt st il 5V powered system (optional) Vc lv Vc D1 VSS PWM Note: Csup (100nF) is only required, if there are long wires (>0.3m) between the DCDC converter and the AS3691. 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. 9.1 Design Example Assume a single color leds application (4 times 3 leds in series, each 100mA with Uf ranging from Ufmin=3.2V to Ufmax = 3.8V) with a fixed supply. First choose the external current set resistor with the following formula: Ri1− 4 = 250mV ICURR1− 4 So for a current of 100mA, use a resistor of 2.5Ω; 1/8W rated resistors are suitable (even up to 400mA). ca Then calculate the required voltage of the power supply. The minimum voltage on the current sink for guaranteed operation is 0.41V (VCURR @100mA) and the maximum forward voltage of the LEDs is assumed to be Ufmax = 3.8V. Therefore 3*3.8V + 0.41V = 11.81V. ni As this is the required minimum voltage of the power supply, add all the tolerances on top. Assumed +/-10% supply tolerance results in a power supply with nominal 13V (to have at least 11.81V in worst case). Using the following formula to calculate the external shunt resistor VDDMIN − VREGINTMAX VDDMIN − 5.4V = IVREGMAX 2.5mA ch Rvdd = VDDMIN is the minimum voltage of the power supply, where Rvdd is connected Te obtains 2564Ω. The nearest lower(!) available value is 2.4kΩ. For Cvdd use Cvdd = 100nF 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) Revision 2.3 15 - 22 AS3691 Datasheet Then calculate the maximum power dissipation inside the AS3691. The worst case is maximum voltage supply (13V + 10%) together with LEDs with minimum forward voltage Ufmin : For these conditions the maximum voltage on any current source (CURR1 to CURR4) is VCURRMAX = (1 + VDDTOL ) VDD − n Uf min Not using automatic supply regulation In our example 14.3V – 9.6V = 4.7V. The maximum power dissipation inside the AS3691 is now (assuming 4 identical strings) al id PMAX = 4 VCURRMAX ICURR In our example 1.88W. As TMAX = PT − P MAX + 50 o C PDERATE For PT and PDERATE see Absolute Maximum Ratings am lc s on A te G nt st il lv the system can be operated safely up to an ambient temperature of 55°C assuming worst case power supplies and worst case leds. Please note: If the internal junction temperature of the AS3691 rises too high, the AS3691 will switch off the current sources for protection (it will never damage the AS3691). 9.1.1 Using Automatic Supply Regulation For the identical system using the automatic supply regulation, the supply is regulated to minimize the power dissipation of the system. Therefore the tolerance of the VDD supply and also the variation in forward voltages of the LEDs can be ignored (only the difference in one lot of leds is still important, as the four strings are connected in parallel to the power supply). Assume a difference of ΔUf = 0.2V of forward voltage of the leds in one lot, then calculate the maximum voltage on the current source of the AS3691 (CURR1 to CURR4) with Using automatic supply regulation ΔUf variation of LED forward voltage in one lot (for one application) VC is internal set voltage (1.0V) VCURRMAX = n ΔU f + VC to be 1.6V. Using the identical formulas as above, PMAX now is 0.64W and TMAX is 110°C. ca Therefore using automatic supply regulation, the ambient temperature can be up to 110°C under identical conditions. 9.2 Layout Recommendations ni See austriamicrosystems ‘AN3691_TECH_Module Description’ as a layout example for the AS3691. Te ch Layout Checklist 1. Use the bottom layer as ground plane and minimize the number and the length of connections within this layer 2. Do as many vias as possible on the exposed pad (for thermal performance) to the ground plane 3. Connect RFBx and RESx together at the current set resistor Rix (see above recommended layout) 4. The ground connections of the current set resistors should be as close to the AS3691 as possible 5. The ground connection of the capacitor Cvdd should be as close as possible to the AS3691 6. Minimize Area build by ‘Csup VSS connection – Csup Supply Connection – LEDs – CURRx – Csup VSS connection’ (to minimize inductance in this path) www.austriamicrosystems.com (ptr) Revision 2.3 16 - 22 AS3691 Datasheet 10 Package Drawings and Markings 10.1 QFN 4x4 Package Drawings and Marking ch ni ca am lc s on A te G nt st il lv al id Figure 16 – QFN 24 – 4x4mm Te 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 2.3 17 - 22 AS3691 Datasheet Te ch ni ca am lc s on A te G nt st il lv al id Figure 17 – QFN 24 – 4x4mm Detail Dimensions www.austriamicrosystems.com (ptr) Revision 2.3 18 - 22 AS3691 Datasheet 10.2 ePTSSOP Package Drawings and Marking Te ch ni ca am lc s on A te G nt st il lv al id Figure 18 – ePTSSOP Package Drawing www.austriamicrosystems.com (ptr) Revision 2.3 19 - 22 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 Te ch ni ca am lc s on A te G nt st il lv al id Figure 19 – ePTSSOP Package Drawing Detail Dimenstions 10.3 DIE Delivery Please contact austriamicrosystems for die delivery. www.austriamicrosystems.com (ptr) Revision 2.3 20 - 22 AS3691 Datasheet 11 Ordering Information Table 7 – Ordering Information Part Number Marking Package Type Delivery Form Description 1) AS3691A -orAS3691 1) QFN 24 4x4mm Tape and Reel in Dry Pack Package Size = 4x4x0.85mm, Pitch = 0.5mm, Pb-Free; 10mV on VRES for ON=0 AS3691A-ZQFT AS3691A QFN 24 4x4mm Trays in Dry Pack Package Size = 4x4x0.85mm, Pitch = 0.5mm, Pb-Free; 10mV on VRES for ON=0 AS3691A-ZSDF2) (AS3691A) Sorted Wafers Cut Dies on Foil Sorted Wafers; 10mV on VRES for ON=0 AS3691B-ZQFP QFN 24 4x4mm Tape and Reel in Dry Pack Package Size = 4x4x0.85mm, Pitch = 0.5mm, Pb-Free; 0mV on VRES for ON=0 AS3691A-ZTSP 2) 2) AS3691B-ZTSP Note: 1) 2) Description: lv am lc s on A te G nt st il AS3691B-ZSDF AS3691B al id AS3691A-ZQFP (AS3691B) AS3691A AS3691B Sorted Wafers Cut Dies on Foil Sorted Wafers; 0mV on VRES for ON=0 ePTSSOP Tape and Reel in Dry Pack Enhanced Power TSSOP (with power pad), Body Size=4.4mm Pitch = 0.65mm, Pb-Free; 10mV on VRES for ON=0 ePTSSOP Tape and Reel in Dry Pack Enhanced Power TSSOP (with power pad), Body Size=4.4mm Pitch = 0.65mm, Pb-Free; 0mV on VRES for ON=0 AS3691 with 10mV on VRES for ON=0 can be marked with ‘AS3691’ or ‘AS3691A’ (identical behavior) Contact austriamicrosystems for availability AS3691 Version, either A or B AS3691A: 10mV on VRESx (x=1 to 4) if ONx = 0 (see ‘7 Detailed Functional Description’) AS3691B: 0mV on VRESx (x=1 to 4) if ONx = 0 (see ‘7 Detailed Functional Description’) ni V … ca AS3691V-CPPD Temperature range -20°C - 85°C ch C … Package; QF for QFN, SD for sorted DIEs, TS for enhanced Power TSSOP D… Delivery From; P for Tape&Reel in Dry Pack, F for cut dies on foil, T for Trays in Dry Pack Te PP … www.austriamicrosystems.com (ptr) Revision 2.3 21 - 22 AS3691 Datasheet Copyright Copyright © 1997-2007, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, AustriaEurope. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. al id All products and companies mentioned are trademarks or registered trademarks of their respective companies. Diclaimer ch ni ca am lc s on A te G nt st il lv Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. Austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or lifesustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. 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. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services. Contact Information Te Headquarters austriamicrosystems AG A-8141 Schloss Premstätten, Austria T. +43 (0) 3136 500 0 F. +43 (0) 3136 5692 For Sales Offices, Distributors and Representatives, please visit: http://www.austriamicrosystems.com/contact www.austriamicrosystems.com (ptr) Revision 2.3 22 - 22