SI5513CDC-T1-GE3

Si5513CDC Vishay Siliconix N- and P-Channel 20 V (D-S) MOSFET PRODUCT SUMMARY VDS (V) N-Channel 20 RDS(on) (Ω) 0.055 at VGS = 4.5 V 0.085 at VGS = 2.5 V 0.150 at VGS = - 4.5 V 0.255 at VGS = - 2.5 V ID (A)a Qg (Typ.) 4g 4g - 3.7 - 2.9 2.6 nC FEATURES • Halogen-free According to IEC 61249-2-21 Definition • TrenchFET® Power MOSFETs • 100 % Rg Tested • Compliant to RoHS Directive 2002/95/EC P-Channel - 20 3.6 nC APPLICATIONS • Load Switch for Portable Devices D1 S2 1206-8 ChipFET® 1 S1 D1 D1 D2 D2 G1 S2 G2 Marking Code EG XXX G1 Lot Traceability and Date Code S1 G2 Part # Code D2 P-Channel MOSFET Bottom View Ordering Information: Si5513CDC-T1-E3 (Lead (Pb)-free) Si5513CDC-T1-GE3 (Lead (Pb)-free and Halogen-free) N-Channel MOSFET ABSOLUTE MAXIMUM RATINGS TA = 25 °C, unless otherwise noted Parameter Drain-Source Voltage Gate-Source Voltage Continuous Drain Current (TJ = 150 °C) TC = 25 °C TC = 70 °C TA = 25 °C TA = 70 °C TC = 25 °C TA = 25 °C TC = 25 °C TC = 70 °C TA = 25 °C TA = 70 °C d, e Symbol VDS VGS ID IDM IS N-Channel 20 ± 12 4g 4g 4b, c, g 3.5b, c 10 2.6 1.4b, c 3.1 2.0 1.7b, c 1.1b, c P-Channel - 20 - 3.7 - 3.0 - 2.4b, c - 1.9b, c -8 - 2.6 - 1.7b, c 3.1 2.0 1.3b, c 0.8b, c Unit V A Pulsed Drain Current Source Drain Current Diode Current Maximum Power Dissipation PD TJ, Tstg W Operating Junction and Storage Temperature Range Soldering Recommendations (Peak Temperature) - 55 to 150 260 °C THERMAL RESISTANCE RATINGS N-Channel Parameter Maximum Junction-to-Ambientb, f Maximum Junction-to-Foot (Drain) t≤5s Steady State Symbol RthJA RthJF Typ. 62 32 Max. 74 40 P-Channel Typ. 77 33 Max. 95 40 Unit °C/W Notes: a. Based on TC = 25 °C. b. Surface mounted on 1" x 1" FR4 board. c. t = 5 s. d. See Reliability Manual for profile. The ChipFET is a leadless package. The end of the lead terminal is exposed copper (not plated) as a result of the singulation process in manufacturing. A solder fillet at the exposed copper tip cannot be guaranteed and is not required to ensure adequade bottom side solder interconnection. e. Rework conditions: manual soldering with a soldering iron is not recommended for leadless components. f. Maximum under steady state conditions is 115 °C/W for N-Channel and 130 °C/W for P-Channel. g. Package limited. Document Number: 68806 S10-0547-Rev. C, 08-Mar-10 www.vishay.com 1 Si5513CDC Vishay Siliconix SPECIFICATIONS TJ = 25 °C, unless otherwise noted Parameter Static Drain-Source Breakdown Voltage VDS Temperature Coefficient VGS(th) Temperature Coefficient Gate Threshold Voltage Gate-Body Leakage VDS ΔVDS/TJ ΔVGS(th)/TJ VGS(th) IGSS VGS = 0 V, ID = 250 µA VGS = 0 V, ID = - 250 µA ID = 250 µA ID = - 250 µA ID = 250 µA ID = - 250 µA VDS = VGS, ID = 250 µA VDS = VGS, ID = - 250 µA VDS = 0 V, VGS = ± 12 V VDS = 20 V, VGS = 0 V Zero Gate Voltage Drain Current IDSS VDS = - 20 V, VGS = 0 V VDS = 20 V, VGS = 0 V, TJ = 55 °C VDS = - 20 V, VGS = 0 V, TJ = 55 °C On-State Drain Currentb ID(on) VDS ≥ 5 V, VGS = 4.5 V VDS ≤ - 5 V, VGS = - 4.5 V VGS = 4.5 V, ID = 4.4 A Drain-Source On-State Resistanceb RDS(on) VGS = - 4.5 V, ID = - 2.4 A VGS = 2.5 V, ID = 3.6 A VGS = - 2.5 V, ID = - 1.9 A Forward Transconductanceb Dynamica Input Capacitance Output Capacitance Reverse Transfer Capacitance Ciss Coss Crss P-Channel VDS = - 10 V, VGS = 0 V, f = 1 MHz VDS = 10 V, VGS = 5 V, ID = 4.4 A Total Gate Charge Qg VDS = - 10 V, VGS = - 5 V, ID = - 2.4 A N-Channel VDS = 10 V, VGS = 4.5 V, ID = 4.4 A Gate-Source Charge Gate-Drain Charge Gate Resistance Qgs Qgd Rg P-Channel VDS = - 10 V, VGS = - 4.5 V, ID = - 2.4 A f = 1 MHz N-Ch N-Channel VDS = 10 V, VGS = 0 V, f = 1 MHz P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch 0.6 1.3 285 252 65 62 30 45 2.8 3.9 2.6 3.6 0.7 0.6 0.5 1.2 3 6.5 6 13 Ω 4.2 5.6 3.9 5.4 nC pF gfs VDS = 10 V, ID = 4.4 A VDS = - 10 V, ID = - 2.4 A N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch 10 -8 0.045 0.120 0.065 0.204 12 5 0.055 0.150 0.085 0.255 S Ω 0.6 - 0.6 20 - 20 23.7 - 19.5 - 3.5 2.8 1.5 - 1.5 100 - 100 1 -1 10 - 10 A µA V nA mV/°C V Symbol Test Conditions Min. Typ. Max. Unit www.vishay.com 2 Document Number: 68806 S10-0547-Rev. C, 08-Mar-10 Si5513CDC Vishay Siliconix SPECIFICATIONS TJ = 25 °C, unless otherwise noted Parameter Dynamica Turn-On Delay Time Rise Time Turn-Off Delay Time Fall Time Turn-On Delay Time Rise Time Turn-Off Delay Time Fall Time Drain-Source Body Diode Characteristics Continuous Source-Drain Diode Current Pulse Diode Forward Currenta Body Diode Voltage Body Diode Reverse Recovery Time Body Diode Reverse Recovery Charge Reverse Recovery Fall Time Reverse Recovery Rise Time IS ISM VSD trr Qrr ta tb N-Channel IF = 3.5 A, dI/dt = 100 A/µs, TJ = 25 °C P-Channel IF = - 1.9 A, dI/dt = - 100 A/µs, TJ = 25 °C IS = 3.5 A, VGS = 0 V IS = - 1.9 A, VGS = 0 V TC = 25 °C N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch 0.8 - 0.8 10 15 3 9 6 10 4 5 ns 2.6 - 2.6 10 -8 1.2 - 1.2 15 22.5 4.5 13.5 V ns nC A td(on) tr td(off) tf td(on) tr td(off) tf N-Ch N-Channel VDD = 10 V, RL = 2.9 Ω ID ≅ 3.5 A, VGEN = 10 V, Rg = 1 Ω P-Channel VDD = - 10 V, RL = 5.3 Ω ID ≅ - 1.9 A, VGEN = - 10 V, Rg = 1 Ω P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch N-Channel VDD = 10 V, RL = 2.9 Ω ID ≅ 3.5 A, VGEN = 4.5 V, Rg = 1 Ω P-Channel VDD = - 10 V, RL = 5.3 Ω ID ≅ - 1.9 A, VGEN = - 4.5 V, Rg = 1 Ω P-Ch N-Ch P-Ch N-Ch P-Ch N-Ch P-Ch 5 4 10 12 14 15 6 6 8 19 9 40 16 18 8 8 10 8 20 18 21 23 12 12 16 29 18 60 24 27 16 16 ns Symbol Test Conditions Min. Typ. Max. Unit Notes: a. Guaranteed by design, not subject to production testing. b. Pulse test; pulse width ≤ 300 µs, duty cycle ≤ 2 %. Stresses beyond those listed under “Absolute Maximum Ratings” 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 the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Document Number: 68806 S10-0547-Rev. C, 08-Mar-10 www.vishay.com 3 Si5513CDC Vishay Siliconix N-CHANNEL TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted 10 VGS = 5 V thru 2.5 V 8 I D - Drain Current (A) I D - Drain Current (A) 4 5 6 VGS = 2 V 4 3 2 TC = 25 °C 1 2 VGS = 1.5 V 0 0 1 2 3 4 5 TC = 125 °C 0 0.0 TC = - 55 °C 0.5 1.0 1.5 2.0 2.5 VDS - Drain-to-Source Voltage (V) VGS - Gate-to-Source Voltage (V) Output Characteristics 0.10 400 Transfer Characteristics R DS(on) - On-Resistance (Ω) 0.08 C - Capacitance (pF) VGS = 2.5 V 0.06 VGS = 4.5 V 0.04 320 Ciss 240 160 0.02 80 Crss Coss 0.00 0 2 4 6 8 10 0 0 4 8 12 16 20 ID - Drain Current (A) VDS - Drain-to-Source Voltage (V) On-Resistance vs. Drain Current and Gate Voltage 10 ID = 4.4 A VGS - Gate-to-Source Voltage (V) 8 VDS = 10 V 6 VDS = 16 V 4 R DS(on) - On-Resistance 1.4 1.6 Capacitance VGS = 4.5 V; ID = 4.4 A (Normalized) 1.2 VGS = 2.5 V; ID = 3.6 A 1.0 2 0.8 0 0 1 2 3 4 5 6 0.6 - 50 - 25 0 25 50 75 100 125 150 Qg - Total Gate Charge (nC) TJ - Junction Temperature (°C) Gate Charge www.vishay.com 4 On-Resistance vs. Junction Temperature Document Number: 68806 S10-0547-Rev. C, 08-Mar-10 Si5513CDC Vishay Siliconix N-CHANNEL TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted 100 0.10 ID = 4.4 A R DS(on) - On-Resistance (Ω) 0.08 TJ = 125 °C 0.06 I S - Source Current (A) 10 TJ = 150 °C 1 TJ = 25 °C 0.04 TJ = 25 °C 0.02 0.1 0.0 0.00 0.2 0.4 0.6 0.8 1.0 1.2 0 2 4 6 8 10 12 VSD - Source-to-Drain Voltage (V) VGS - Gate-to-Source Voltage (V) Source-Drain Diode Forward Voltage 1.3 On-Resistance vs. Gate-to-Source Voltage 30 25 1.1 20 VGS(th) (V) 0.9 ID = 250 µA Power (W) 150 15 10 0.7 5 0.5 - 50 - 25 0 25 50 75 100 125 0 10-4 10-3 10-2 10-1 1 10 TJ - Temperature (°C) Time (s) Threshold Voltage 100 Single Pulse Power Limited by RDS(on)* 10 I D - Drain Current (A) 100 µs 1 ms 10 ms 0.1 TA = 25 °C Single Pulse 0.01 0.1 BVDSS Limited 100 ms 1 s, 10 s DC 1 1 10 100 VDS - Drain-to-Source Voltage (V) * VGS > minimum VGS at which RDS(on) is specified Safe Operating Area, Junction-to-Ambient Document Number: 68806 S10-0547-Rev. C, 08-Mar-10 www.vishay.com 5 Si5513CDC Vishay Siliconix N-CHANNEL TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted 8 6 I D - Drain Current (A) Package Limited 4 2 0 0 25 50 75 100 125 150 TC - Case Temperature (°C) Current Derating* 4.0 1.5 3.2 1.2 Power (W) 2.4 Power (W) 0 25 50 75 100 125 150 0.9 1.6 0.6 0.8 0.3 0.0 0.0 0 25 50 75 100 125 150 TC - Case Temperature (°C) TA - Ambient Temperature (°C) Power, Junction-to-Foot Power, Junction-to-Ambient * The power dissipation PD is based on TJ(max) = 150 °C, using junction-to-case thermal resistance, and is more useful in settling the upper dissipation limit for cases where additional heatsinking is used. It is used to determine the current rating, when this rating falls below the package limit. www.vishay.com 6 Document Number: 68806 S10-0547-Rev. C, 08-Mar-10 Si5513CDC Vishay Siliconix N-CHANNEL TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted 1 Normalized Effective Transient Thermal Impedance Duty Cycle = 0.5 0.2 0.1 0.1 0.05 Notes: PDM t1 t2 1. Duty Cycle, D = t1 t2 2. Per Unit Base = RthJA = 95 °C/W 3. TJM - TA = PDMZthJA(t) 0.02 Single Pulse 0.01 10 -4 10 -3 10 -2 10 -1 1 Square Wave Pulse Duration (s) 10 4. Surface Mounted 100 1000 Normalized Thermal Transient Impedance, Junction-to-Ambient 1 Duty Cycle = 0.5 Normalized Effective Transient Thermal Impedance 0.2 0.1 0.1 0.05 0.02 Single Pulse 0.01 10 -4 10 -3 10 -2 Square Wave Pulse Duration (s) 10 -1 1 Normalized Thermal Transient Impedance, Junction-to-Foot Document Number: 68806 S10-0547-Rev. C, 08-Mar-10 www.vishay.com 7 Si5513CDC Vishay Siliconix P-CHANNEL TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted 8 2.0 VGS = 5 V thru 3 V I D - Drain Current (A) VGS = 2.5 V 4 I D - Drain Current (A) 6 1.5 1.0 TC = 25 °C 0.5 TC = 125 °C VGS = 2 V 2 VGS = 1.5 V 0 0 1 2 3 4 5 0.0 0.0 TC = - 55 °C 0.5 1.0 1.5 2.0 VDS - Drain-to-Source Voltage (V) VGS - Gate-to-Source Voltage (V) Output Characteristics 0.30 450 Transfer Characteristics 0.25 R DS(on) - On-Resistance (Ω) VGS = 2.5 V 0.20 C - Capacitance (pF) 360 Ciss 270 0.15 VGS = 4.5 V 180 Coss Crss 0 0.10 0.05 90 0.00 0 2 4 ID - Drain Current (A) 6 8 0 4 8 12 16 20 VDS - Drain-to-Source Voltage (V) On-Resistance vs. Drain Current and Gate Voltage 10 ID = 2.4 A VGS - Gate-to-Source Voltage (V) 8 VDS = 10 V 6 VDS = 16 V 4 RDS(on) - On-Resistance 1.4 1.6 Capacitance VGS = - 4.5 V; I D = - 2.4 A (Normalized) 1.2 1.0 VGS = - 2.5 V; I D = - 1.9 A 2 0.8 0 0 2 4 6 8 0.6 - 50 - 25 0 25 50 75 100 125 150 Qg - Total Gate Charge (nC) TJ - Junction Temperature (°C) Gate Charge www.vishay.com 8 On-Resistance vs. Junction Temperature Document Number: 68806 S10-0547-Rev. C, 08-Mar-10 Si5513CDC Vishay Siliconix P-CHANNEL TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted 100 0.30 ID = - 2.4 A R DS(on) - On-Resistance (Ω) 0.24 I S - Source Current (A) 10 0.18 TJ = 125 °C 0.12 TJ = 25 °C TJ = 150 °C 1 TJ = 25 °C 0.06 0.1 0.0 0.00 0.2 0.4 0.6 0.8 1.0 1.2 0 2 4 6 8 10 12 VSD - Source-to-Drain Voltage (V) VGS - Gate-to-Source Voltage (V) Source-Drain Diode Forward Voltage 1.2 60 On-Resistance vs. Gate-to-Source Voltage 1.1 50 1.0 VGS(th) (V) Power (W) 40 0.9 ID = 250 µA 0.8 30 20 0.7 10 0.6 - 50 - 25 0 25 50 75 100 125 150 0 0.0001 0.001 0.01 0.1 Time (s) 1 10 100 TJ - Temperature (°C) Threshold Voltage 10 Limited by RDS(on)* 100 µs I D - Drain Current (A) 1 1 ms 10 ms 0.1 TA = 25 °C Single Pulse 0.01 0.1 100 ms 1 s, 10 s DC BVDSS Limited Single Pulse Power 1 10 100 VDS - Drain-to-Source Voltage (V) * VGS > minimum VGS at which RDS(on) is specified Safe Operating Area, Junction-to-Case Document Number: 68806 S10-0547-Rev. C, 08-Mar-10 www.vishay.com 9 Si5513CDC Vishay Siliconix P-CHANNEL TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted 5 4 I D - Drain Current (A) 3 2 1 0 0 25 50 75 100 125 150 TC - Case Temperature (°C) Current Derating* 4.0 1.2 3.2 0.9 Power (W) 2.4 Power (W) 0.6 1.6 0.3 0.8 0.0 0 25 50 75 100 125 150 0.0 0 25 50 75 100 125 150 TC - Case Temperature (°C) TA - Ambient Temperature (°C) Power, Junction-to-Case Power, Junction-to-Ambient * The power dissipation PD is based on TJ(max) = 150 °C, using junction-to-case thermal resistance, and is more useful in settling the upper dissipation limit for cases where additional heatsinking is used. It is used to determine the current rating, when this rating falls below the package limit. www.vishay.com 10 Document Number: 68806 S10-0547-Rev. C, 08-Mar-10 Si5513CDC Vishay Siliconix P-CHANNEL TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted 1 Normalized Effective Transient Thermal Impedance Duty Cycle = 0.5 0.2 0.1 0.1 0.05 0.02 Single Pulse 0.01 10 -4 10 -3 10 -2 10 -1 1 Square Wave Pulse Duration (s) 10 Notes: PDM t1 t2 1. Duty Cycle, D = t1 t2 2. Per Unit Base = RthJA = 105 °C/W 3. TJM - TA = PDMZthJA(t) 4. Surface Mounted 100 1000 Normalized Thermal Transient Impedance, Junction-to-Ambient 1 Duty Cycle = 0.5 Normalized Effective Transient Thermal Impedance 0.2 0.1 0.1 0.05 0.02 Single Pulse 0.01 10 -4 10 -3 10 -2 Square Wave Pulse Duration (s) 10 -1 1 Normalized Thermal Transient Impedance, Junction-to-Foot Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon Technology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and reliability data, see www.vishay.com/ppg?68806. Document Number: 68806 S10-0547-Rev. C, 08-Mar-10 www.vishay.com 11 Package Information Vishay Siliconix 1206-8 ChipFETR 4 D 8 7 6 5 5 4 E1 E 4 1 2 3 4 3 2 1 6 7 8 L S e b c x Backside View 2X 0.10/0.13 R A C1 DETAIL X NOTES: 1. 2. 3. 4. 5. All dimensions are in millimeaters. Mold gate burrs shall not exceed 0.13 mm per side. Leadframe to molded body offset is horizontal and vertical shall not exceed 0.08 mm. Dimensions exclusive of mold gate burrs. No mold flash allowed on the top and bottom lead surface. MILLIMETERS Dim A b c c1 D E E1 e L S Min 1.00 0.25 0.1 0 2.95 1.825 1.55 0.28 INCHES Min 0.039 0.010 0.004 0 0.116 0.072 0.061 0.011 Nom − 0.30 0.15 − 3.05 1.90 1.65 0.65 BSC − 0.55 BSC 5_Nom Max 1.10 0.35 0.20 0.038 3.10 1.975 1.70 0.42 Nom − 0.012 0.006 − 0.120 0.075 0.065 0.0256 BSC − 0.022 BSC 5_Nom Max 0.043 0.014 0.008 0.0015 0.122 0.078 0.067 0.017 ECN: C-03528—Rev. F, 19-Jan-04 DWG: 5547 Document Number: 71151 15-Jan-04 www.vishay.com 1 AN812 Vishay Siliconix Dual-Channel 1206-8 ChipFETr Power MOSFET Recommended Pad Pattern and Thermal Performance INTRODUCTION New Vishay Siliconix ChipFETs in the leadless 1206-8 package feature the same outline as popular 1206-8 resistors and capacitors but provide all the performance of true power semiconductor devices. The 1206-8 ChipFET has the same footprint as the body of the LITTLE FOOTR TSOP-6, and can be thought of as a leadless TSOP-6 for purposes of visualizing board area, but its thermal performance bears comparison with the much larger SO-8. This technical note discusses the dual ChipFET 1206-8 pin-out, package outline, pad patterns, evaluation board layout, and thermal performance. 80 mil 25 mil 43 mil 18 mil 10 mil 26 mil PIN-OUT FIGURE 2. Footprint With Copper Spreading Figure 1 shows the pin-out description and Pin 1 identification for the dual-channel 1206-8 ChipFET device. The pin-out is similar to the TSOP-6 configuration, with two additional drain pins to enhance power dissipation and thus thermal performance. The legs of the device are very short, again helping to reduce the thermal path to the external heatsink/pcb and allowing a larger die to be fitted in the device if necessary. Dual 1206-8 ChipFET S1 G1 S2 G2 The pad pattern with copper spreading shown in Figure 2 improves the thermal area of the drain connections (pins 5 and 6, pins 7 and 8) while remaining within the confines of the basic footprint. The drain copper area is 0.0019 sq. in. or 1.22 sq. mm. This will assist the power dissipation path away from the device (through the copper leadframe) and into the board and exterior chassis (if applicable) for the dual device. The addition of a further copper area and/or the addition of vias to other board layers will enhance the performance still further. An example of this method is implemented on the Vishay Siliconix Evaluation Board described in the next section (Figure 3). D1 D1 D2 D2 THE VISHAY SILICONIX EVALUATION BOARD FOR THE DUAL 1206-8 FIGURE 1. For package dimensions see the 1206-8 ChipFET package outline drawing (http://www.vishay.com/doc?71151). BASIC PAD PATTERNS The basic pad layout with dimensions is shown in Application Note 826, Recommended Minimum Pad Patterns With Outline Drawing Access for Vishay Siliconix MOSFETs, (http://www.vishay.com/doc?72286). This is sufficient for low power dissipation MOSFET applications, but power semiconductor performance requires a greater copper pad area, particularly for the drain leads. Document Number: 71127 12-Dec-03 The dual ChipFET 1206-08 evaluation board measures 0.6 in by 0.5 in. Its copper pad pattern consists of an increased pad area around each of the two drain leads on the top-side— approximately 0.0246 sq. in. or 15.87 sq. mm—and vias added through to the underside of the board, again with a maximized copper pad area of approximately the board-size dimensions, split into two for each of the drains. The outer package outline is for the 8-pin DIP, which will allow test sockets to be used to assist in testing. The thermal performance of the 1206-8 on this board has been measured with the results following on the next page. The testing included comparison with the minimum recommended footprint on the evaluation board-size pcb and the industry standard one-inch square FR4 pcb with copper on both sides of the board. www.vishay.com 1 AN812 Vishay Siliconix Front of Board Back of Board ChipFETr vishay.com FIGURE 3. THERMAL PERFORMANCE Junction-to-Foot Thermal Resistance (the Package Performance) Thermal performance for the 1206-8 ChipFET measured as junction-to-foot thermal resistance is 30_C/W typical, 40_C/W maximum for the dual device. The “foot” is the drain lead of the device as it connects with the body. This is identical to the dual SO-8 package RQjf performance, a feat made possible by shortening the leads to the point where they become only a small part of the total footprint area. Junction-to-Ambient Thermal Resistance (dependent on pcb size) The typical RQja for the dual-channel 1206-8 ChipFET is 90_C/W steady state, identical to the SO-8. Maximum ratings are 110_C/W for both the 1206-8 and the SO-8. Both packages have comparable thermal performance on the 1” square pcb footprint with the 1206-8 dual package having a quarter of the body area, a significant factor when considering board area. Testing To aid comparison further, Figure 4 illustrates ChipFET 1206-8 dual thermal performance on two different board sizes and three different pad patterns.The results display the thermal performance out to steady state and produce a graphic account on how an increased copper pad area for the drain connections can enhance thermal performance. The measured steady state values of RQja for the Dual 1206-8 ChipFET are : 1) Minimum recommended pad pattern (see Figure 2) on the evaluation board size of 0.5 in x 0.6 in. 2) The evaluation board with the pad pattern described on Figure 3. 3) Industry standard 1” square pcb with maximum copper both sides. www.vishay.com The results show that a major reduction can be made in the thermal resistance by increasing the copper drain area. In this example, a 57_C/W reduction was achieved without having to increase the size of the board. If increasing board size is an option, a further 38_C/W reduction was obtained by maximizing the copper from the drain on the larger 1” square PCB. 200 160 Thermal Resistance (C/W) Min. Footprint Dual EVB 120 80 40 1” Square PCB 0 10-5 10-4 10-3 10-2 10-1 1 10 100 1000 Time (Secs) FIGURE 4. Dual 1206-8 ChipFET SUMMARY The thermal results for the dual-channel 1206-8 ChipFET package display identical power dissipation performance to the SO-8 with a footprint reduction of 80%. Careful design of the package has allowed for this performance to be achieved. The short leads allow the die size to be maximized and thermal resistance to be reduced within the confines of the TSOP-6 body size. 185_C/W 128_C/W 90_C/W ASSOCIATED DOCUMENT 1206-8 ChipFET Single Thermal performance, AN811, (http://www.vishay.com/doc?71126). Document Number: 71127 12-Dec-03 2 Application Note 826 Vishay Siliconix RECOMMENDED MINIMUM PADS FOR 1206-8 ChipFET® 0.093 (2.357) (2.032) 0.026 (0.650) 0.016 (0.406) 0.010 (0.244) Recommended Minimum Pads Dimensions in Inches/(mm) Return to Index Return to Index APPLICATION NOTE www.vishay.com 2 (0.559) 0.022 (0.914) 0.080 0.036 Document Number: 72593 Revision: 21-Jan-08 Legal Disclaimer Notice Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other disclosure relating to any product. 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It is the customer’s responsibility to validate that a particular product with the properties described in the product specification is suitable for use in a particular application. Parameters provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All operating parameters, including typical parameters, must be validated for each customer application by the customer’s technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed therein. Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining applications or for any other application in which the failure of the Vishay product could result in personal injury or death. Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk and agree to fully indemnify and hold Vishay and its distributors harmless from and against any and all claims, liabilities, expenses and damages arising or resulting in connection with such use or sale, including attorneys fees, even if such claim alleges that Vishay or its distributor was negligent regarding the design or manufacture of the part. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 11-Mar-11 www.vishay.com 1