For more information, please visit the product page. rev. PART NUMBER: VPOL5A-12-SMT page 1 of 12 date 08/2007 DESCRIPTION: point of load converter features * industry standard pin out * high efficiency to 92% * 300 KHz switching frequency * 8.3-14 VDC wide input range * 0.75-5.0 VDC wide output range * over temperature protection * continuous short circuit protection * remote on/off * cost-efficient open frame design * UL/C-UL60950-1 (E222736) certified * RoHS compliant 1. INTRODUCTION 2. VPOL5A-12-SMT CONVERTER FEATURES 7. APPLICATIONS 7.1 Layout Design Challenges. 3. GENERAL DESCRIPTION 3.1 Electrical Description 7.2 Convection Requirements for Cooling 3.2 Thermal Packaging and Physical Design. 7.4 Power De-Rating Curves 4. TECHNICAL SPECIFICATIONS 7.5 Efficiency vs Load Curves 5. MAIN FEATURES AND FUNCTIONS 5.1 Operating Temperature Range 7.6 Input Capacitance at the Power Module 5.2 Over-Temperature Protection (OTP) 7.8 VPOL5A-12-SMT Output Voltage Adustment. 5.3 Output Voltage Adjustment 7.9 Output Ripple and Noise Measurement 5.4 Safe Operating Area (SOA) 7.10 Output Capacitance 5.5 Over Current Protection 7.11 VPOL5A-12-SMT Reflow Profile 5.6 Remote ON/OFF 5.7 UVLO (Under-Voltage Lockout) 6. SAFETY 6.1 Input Fusing and Safety Considerations. 7.3 Thermal Considerations 7.7 Test Set-Up 8. MECHANICAL OUTLINE DIAGRAMS 8.1 VPOL5A-12-SMT Mechanical Outline Diagrams 8.2 VPOL5A-12-SMT Tape and Reel Dimensions 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 For more information, please visit the product page. rev. PART NUMBER: VPOL5A-12-SMT page 2 of 12 date 08/2007 DESCRIPTION: point of load converter If the converter is overloaded or the ambient temperature gets too 1. Introduction high, the converter will shut down to protect the unit. L1 Q1 This application note describes the features and functions of #5)).#gS +VIN +VO VPOL5A-12-SMT series of non-isolated dc-dc converters. These are highly efficient, reliable and compact, high power density, single output Q2 C1 D1 C2 DC/DC converters. These “Point of Load” modules serve the needs specifically of the fixed and mobile telecommunications and computing market, employing economical distributed Power Architectures. The VPOL5A-12-SMT series provide precisely regulated output voltage COM COM range from 0.75V to 5.0Vdc over a wide range of input voltage (Vi=8.3 – R1 PWM IC 14Vdc) and can operate over an ambient temperature range of –40°C ON/OFF R trim ERR AMP to +85°C. Ultra-high efficiency operation is achieved through the use of TRIM R2 synchronous rectification and drive control techniques. The modules are fully protected against short circuit and overtemperature conditions. #5)).#gS world class automated Figure 1. Electrical Block Diagram manufacturing methods, together with an extensive testing and qualification program, ensure that all VPOL5A-12-SMT series 3.2 Thermal Packaging and Physical Design. converters are extremely reliable. The VPOL5A-12-SMT series uses a multi-layer FR4 PCB construction. All surface mount power components are placed on one side of the PCB, and all low-power control components are placed on the other 2.VPOL5A-12-SMT Converter Features side. Thus, the heat dissipation of the power components is optimized, ensuring that control components are not thermally stressed. The High efficiency topology, typically 89% at 3.3Vdc Industry standard footprint Wide ambient temperature range, -40°C to +85°C converter is an open-frame product and has no case or case pin. The open-frame design has several advantages over encapsulated closed devices. Among these advantages are: Cost efficient open frame design Programmable output voltage via external resistor from 0.75 to Efficient Thermal Management: the heat is removed from the 5.0Vdc heat generating components without heating more sensitive, small No minimum load requirement (Stable at all loads) signal control components. Remote ON/OFF Environmental: Lead free open-frame converters are more easily Fixed switching frequency re-cycled. Continuous short-circuit protection and over current protection Cost Efficient: No encapsulation. Cost efficient open-frame Over-temperature protection (OTP) construction. Monotonic Startup with pre-bias at the output. Reliable: Efficient cooling provided by open frame construction UL/IEC/EN60950 Certified. offers high reliability and easy diagnostics. 3. General Description 3.1 Electrical Description A block diagram of the VPOL5A-12-SMT series converter is shown in Figure 1. Extremely high efficiency power conversion is achieved through the use of synchronous rectification and drive techniques. Essentially, the powerful VPOL5A-12-SMT series topology is based on a non-isolated synchronous buck converter. The control loop is optimized for unconditional stability, fast transient response and a very tight line and load regulation. In a typical pre-bias application the VPOL5A-12-SMT series converters do not draw any reverse current at start-up. The output voltage can be adjusted from 0.75 to 5.0vdc, using the TRIM pin with a external resistor. The converter can be shut down via a remote ON/OFF input that is referenced to ground. This input is compatible with popular logic devices; a 'positive' logic input is supplied as standard. Positive logic implies that the converter is enabled if the remote ON/OFF input is high (or floating), and disabled if it is low. The converter is also protected against over-temperature conditions. 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 For more information, please visit the product page. rev. page 3 of 12 date 08/2007 DESCRIPTION: point of load converter PART NUMBER: VPOL5A-12-SMT 4. Technical Specifications (All specifications are typical at nominal input, full load at 25°C unless otherwise noted.) PARAMETER ABSOLUTE MAXIMUM RATINGS Input Voltage Continuous Operating Temp erature See Thermal Considerations Section NOTES and CONDITIONS Device Min. Typical Max. Units ALL 0 15 Vdc ALL -40 +85 °C ALL -55 +125 °C ALL 8.3 14 Vdc Storage Temperature INPUT CHARACTERISTICS Operating Input Voltage Input Under-Voltage Lockout Turn-On Voltage Threshold Turn-Off Voltage Threshold Lockout Hysteresis Voltage 12 Vdc Vdc Vdc 8.0 7.9 0.1 ALL ALL ALL ALL 3.5 A Maximum Input Current Vin=0 to 14Vdc , Io=Io,max. No-Load Input Current Vo=0.75V Vo=1.2V Vo=1.5V Vo=1.8V Vo=2.0V Vo=2.5V Vo=3.3V Vo=5.0V ALL Off Converter Input Current Shutdown input idle current ALL 10 mA ALL 0.1 As 2 Inrush Current (I t) Input Reflected-Ripple Current 20 25 25 30 30 35 45 50 mA 2 P-P thru 1uH inductor, 5Hz to 20MHz ALL 150 mA Output Voltage Set Point Vin=Nominal Vin , Io=Io.max, Tc=25 ALL -1.5% Vo,set +1.5% Vdc Output Voltage Trim Adjustment Range Selected by an external resistor ALL 0.7525 5.0 Vdc Io=Io.min to Io.max ALL -0.5 +0.5 % OUTPUT CHARACTERISTIC Output Voltage Regulation Load Regulation Vin=low line to high line ALL -0.2 +0.2 % Tempera ture Coefficient Line Regulation Ta=-40°C to 85°C ALL -0.03 +0.03 %/°C Output Voltage Ripple and Noise 5Hz to 20MHz bandwidth Other Voltages Vo=5V Other Voltages Vo=5V 50 75 20 45 Low ESR ALL 3000 ALL 0 Output DC Current-Limit Inception Output Voltage =90% Nominal Output Voltage ALL 6 Shout Circuit Protection Continuous with Hiccup Mode Peak-to-Peak RMS External Capacitive Load Full Load, 1uF ceramic and 10uF tantalum Full Load, 1uF ceramic and 10uF tantalum Operating Output Current Range 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 8.5 mV mV uF 5 A 11 A For more information, please visit the product page. rev. 4 of 12 date 08/2007 DESCRIPTION: point of load converter PART NUMBER: VPOL5A-12-SMT PARAMETER DYNAMIC CHARACTERISTICS page NOTES and CONDITIONS Device Min. Typical Max. Units Output Voltage Transient Response Error Brand 50% Step Load Change, di/dt=0.1A/us ALL 200 mV Setting Time (within 1% Vout nominal) 50% Step Load Change, di/dt=0.1A/us ALL 200 us EFFICIENCY 100% Load Vo=0.75V Vo=1.2V Vo=1.5V Vo=1.8V Vo=2.0V Vo=2.5V Vo=3.3V Vo=5.0V ALL Non-isolation ALL 73 80 82 84 85 87 89 92 % ISOLATION CHARACTERISTICS Input to Output 0 Vdc FEATURE CHARACTERISTICS Switching Frequency ON/OFF Control, Positive Logic Remote On/Off Logic Low (Module Off) Logic High (Module On) ALL Standard Model 0 or Open Circuit ON/OFF Control, Negative Logic Remote On/Off Logic Low (Module On) or Open Circuit Logic High (Module Off) ON/OFF Current (for both remote on/off logic) Leakage Current (for both remote on/off logic) Turn-On Delay and Rise Time Turn-On Delay Time, From On/Off Control Turn-On Delay Time, From Input Output Voltage Rise Time Over Temperature Protection 300 KHz 0.4 Vdc Vdc 0.4 Vin Vdc Vdc 1 1 mA mA Vin Suffix “N” Model 0 2.8 Ion/off at Von/off =0.0V Logic High, Von/off=14V ALL AL L Von/off to 10 %Vo,set Vin,min. to 10%V o,set 10%Vo,set to 90 %Vo,set ALL ALL ALL ALL 3.5 3.5 3.5 120 ms ms ms °C ALL 1.5 M hours ALL 2.3 grams GENERAL SPECIFICATIONS MTBF Weight Dimensions SMT packages Io=100%of Io.max;Ta=2 5°C per MIL-HDBK217F 0.8x0.45x0.24 inches(20.3x11.43x6.09 mm) 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 For more information, please visit the product page. rev. PART NUMBER: VPOL5A-12-SMT page 5 of 12 date 08/2007 DESCRIPTION: point of load converter 5. Main Features and Functions 5.4 Safe Operating Area (SOA) 5.1 Operating Temperature Range (SOA) of the converter. This representation assumes ambient #5)).#gS VPOL5A-12-SMT series converters highly efficient converter operating conditions such as airflow are met as per thermal guidelines design has resulted in its ability to operate over a wide ambient provided in Sections 7.2 and 7.3. Figure 2 provides a graphical representation of the Safe Operating Area temperature environment ( -40°C to 85°C). Due consideration must be given to the de-rating curves when ascertaining maximum power that Vo can be drawn from the converter. The maximum power drawn is influenced by a number of factors, such as: Input voltage range. Air velocity (forced or natural convection). Mounting orientation of converter PCB with respect to the Airflow. Motherboard PCB design, especially ground and power planes. These can be effective heat sinks for the converter. Vo,nom VOLTAGE (V) Output load current. Safe Operating Area 5.2 Over-Temperature Protection (OTP) Io,max Io,CL Io The VPOL5A-12-SMT series converters are equipped with non-latching CURRENT (A) over-temperature protection. A te mperature sensor monitors the temperature of the hot spot (typically, top switch). If the temperature Figure 2. Maximum Output Current Safe Operating Area exceeds a threshold of 120°C (t ypical) the converter will shut down, disabling the output. When the temperature has decreased the converter will automatically restart. 5.5 Over Current Protection The over-temperature condition can be induced by a variety of reasons All different voltage models have a full continuous short-circuit such as external overload condition or a system fan failure. protection. The unit will auto recover once the short circuit is removed. To provide pr otection in a fault condition, the unit is equipped with internal over-current protection. The unit operates normally once the 5.3 Output Voltage Adjustment fault condition is removed. The power module will supply up to 150% of Section 7.8 describes in detail as to how to trim the output voltage with rated current. In the event of an over current converter will go into a respect to its set point. The output voltage on all models is trimmable in hiccup mode protection. the range 0.75 – 5.0Vdc. 5.6 Remote ON/OFF The remote ON/OFF input feature of the converter allows external circuitry to turn the converter ON or OFF. Active-high remote ON/OFF is available as standard. The VPOL5A-12-SMT series converters are turned on if the remote ON/OFF pin is high, or left open or floating. Setting the pin low will turn the converter ‘Off’. The signal level of the remote on/off input is defined with respect to ground. If not using the remote on/off pin, leave the pin open (module will be on). The part number suffix “N” is Negative remote ON/OFF version. The unit is guaranteed OFF over the full temperature range if this voltage level exceeds 2.8Vdc. The converters are turned on If the on/off pin input is low or left open. The recommended remote on/off drive circuit as shown as figure 3, 4. 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 For more information, please visit the product page. rev. 6 of 12 date 08/2007 DESCRIPTION: point of load converter PART NUMBER: VPOL5A-12-SMT +Vin ON/OFF Control page +Vo Remote ON/OFF 7. Applications 7.1 Layout Design Challenges. Q1 In optimizing thermal design the PCB is utilized as a heat sink. Also VPOL5A-12-SMT some heat is transferred from the VPOL5A-12-SMT module to the main board through connecting pins. The system designer or the end user Common Common must ensure that other components and metal in the vicinity of the VPOL5A-12-SMT series meet the spacing requirements to which the Figure 3. Positive Remote ON/OFF Input Drive Circuit system is approved. Low resistance and low inductance PCB layout traces are the norm and +Vin +Vo Q1 to proper low impedance tracks between power module, input and output grounds. The recommended VPOL5A-12-SMT footprint as VPOL5A-12-SMT ON/OFF Control should be used where possible. Due consideration must also be given Remote ON/OFF shown as figure 5. Recommended Pad Layout Dimensions are in Inches ( millimetes ) Common Common 0.180 (4.57) 0.160 (4.06) 0.160 (4.06) 0.190 (4.83) Figure 4. Negative Remote ON/OFF Input Drive Circuit VOUT 5.7 UVLO (Under-Voltage Lockout) The voltage on the Vcc pin determines the start of the operation of the TRIM GND 0.340 (8.64) 0.350 (8.89) Converter. When the input Vcc rises and exceeds about 8.0V the ON/OFF converter initiates a soft start. The UVLO function in the converter has a 0.010 (0.25) VIN hysteresis (about 100mV) built in to provide noise immunity at start-up. 0.06 (1.5) 6. Safety 6.1 Input Fusing and Safety Considerations. 0.05 (1.3) 0.690 (17.53) PAD SIZE MIN : 0.120" x 0.095 " MAX : 0.135" x 0.110 " Figure 5. Recommended VPOL5A-12-SMT Footprint (Top View) Agency Approvals: The power supply shall be submitted to and receive formal approval from the following test agencies. 1.The power supply shall be approved by a nationally recognized rd testing laboratory to UL/CSA 60950 3 Edition (North America) and EN60950 (International) 2. CB Certificate from an internationally recognized test house in accordance with EN 60950. The VPOL5A-12-SMT series converters do not have an internal fuse. However, to achieve maximum safety and system protection, always use an input line fuse. The safety agencies require a time-delay fuse with a maximum rating of 7A. 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 For more information, please visit the product page. rev. page 7 of 12 date 08/2007 DESCRIPTION: point of load converter PART NUMBER: VPOL5A-12-SMT 7.2 Convection Requirements for Cooling To predict the ap proximate cooling needed for the module, refer to the Power De-rating curves in Figures 10 to 13. These de-rating curves are approximations of the ambient temperatures and airflows required to keep the power module temperature below its maximum rating. Once the module is assembled in the actual system, the module’s temperature should be checked as shown in Figure 6 to ensure it does not exceed 110°C. Proper cooling can be verified by measuring the power module’s temperature at Q1-pin 6 as shown in Figure 7. W ind Tunnel Figure 7. Temperature Measurement Locati on for VPOL5A-12-SMT 25.4(1.0) 7.3 Thermal Considerations Bakelite Power Module 76.2(3.0) Thermocuple Location for measuring ambient temperature and airflow The power module operates in a variety of thermal environments; however, sufficient cooling should be provided to help ensure reliable operation of the unit. Heat is removed by conduction, convection, and radiation to the surrounding environment. The thermal data presented is based on measurements taken in a set-up as shown in Figure 7. Figures 8 & 9 represent the test data. Note that the airflow is parallel to the long axis of the module as shown in Figure 6 for the VPOL5A-12SMT. The temperature at either location should not exceed 110 °C. The output power of the module should not exceed the rated power for the module (VO, set x IO, max). The VPOL5A-12-SMT thermal data presented is based on measurements taken in a wind tunnel. The test setup shown in Figure 6 and EUT need to solder on 33mm x 40.38mm(1.300'' x 1.59'') test pcb. Note that airflow is parallel to the long axis of the module as shown in Fig 7. 12.7(0.5) Air flow Note : Dimensions are in millimeters and (inches) Figure 6. Thermal Test Setup 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 For more information, please visit the product page. rev. DESCRIPTION: point of load converter PART NUMBER: VPOL5A-12-SMT TYPICAL POWER DERATING FOR 5 Vin 3.3 Vout 6.0 Output Current(A) 5.0 4.0 0LFM 3.0 100LFM 2.0 200LFM 1.0 0.0 0 10 20 30 40 50 60 70 80 90 100 o Ambient Temperature( C) Figure 3. Typi cal Power De-rating for12V IN 3.3V out NOTE: 1. specific input & output derating curves available, please contact #5)).# for detail 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 page 8 of 12 date 08/2007 For more information, please visit the product page. rev. page 9 of 12 date 08/2007 DESCRIPTION: point of load converter PART NUMBER: VPOL5A-12-SMT VPOL5A-12-SMT Vo=1.8V (Eff Vs Io) VPOL5A-12-SMT Vo=1.5V (Eff Vs Io) 100% 100% 95% 95% Efficincy (%) Efficincy (%) 90% 90% 85% 8.3V 12V 14V 80% 75% 85% 80% 75% 8.3V 12V 14V 70% 65% 70% 60% 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 0 5 0.5 1 Current Load (A) 2 2.5 3 3.5 4 4.5 5 Current Load (A) VPOL5A-12-SMT Vo=1.2V (Eff Vs Io) VPOL5A-12-SMT Vo=0.75V (Eff Vs Io) 90% 95% 85% 90% 80% Efficincy (%) 100% Efficincy (%) 1.5 85% 80% 75% 8.3V 12V 14V 70% 65% 75% 70% 65% 8.3V 12V 14V 60% 55% 60% 50% 0 0.5 1 1.5 2 2.5 3 Current Load (A) 3.5 4 4.5 5 0 0.5 1 1.5 2 2.5 3 Current Load (A) 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 3.5 4 4.5 5 For more information, please visit the product page. rev. page 10 of 12 date 08/2007 DESCRIPTION: point of load converter PART NUMBER: VPOL5A-12-SMT Where: VFL is the output voltage at full load VNL is the output voltage at no load 7.6 Input Capacitance at the Power Module The VPOL5A-12-SMT converters must be connected to a low AC source impedance. To avoid probl ems with loop stability source inductance should be low. Also, the input capacitors should be placed close to the converter input pins to de-couple distribution inductance. However, the external input capacitors are chosen for suitable ripple handling capability. Low ESR polymers are a good choice. They have high capacitance, high ripple rating and low ESR (typical <100mohm). Electrolytic capacitors should be avoided. Circuit as shown in Figure 10 represents typical measurement methods for ripple current. Input reflected-ripple current is measured with a simulated source Inductance of 1uH. Current is measured at the input of the module. The value of line regulation is defined as: Line.reg = VHL _ VLL x 100% VLL Where: VHL is the output voltage of maximum input voltage at full load. VLL is the output voltage of minimum input voltage at full load. Current Meter A Power Supply +Vin + 47uF 10UF V VPOL5A-12-SMT CERAMIC Common To Oscilloscope Figure 11. VPOL5A-12-SMT Test Setup +Vin 1uH Power + 2*100uF Tantalum Supply VPOL5A-12-SMT 220uF ESR<0.1ohm Common Figure 10. Input Reflected-Ripple Test Setup 7.7 Test Set-Up The basic test set-up to measure parameters such as efficiency and load regulation is shown in Figure 11. Things to note are that this converter is non-isolated, as such the input and output share a common ground. These grounds should be connected together via low impedance ground plane in the application circuit. When testing a converter on a bench set-up, ensure that -Vin and -Vo are connected together via a low impedance short to ensure proper efficiency and load regulation measurements are being made. When testing the #5)).#gS VPOL5A-12-SMT under any transient conditions please ensure that the transient response of the source is sufficient to power the equipment under test. We can calculate the Efficiency Load regulation and line regulation. The value of efficiency is defined as: ç= Vo x Io x100% Vin x Iin Where: Vo is output voltage, Io is output current, Vin is input voltage, Iin is input current. The value of load regulation is defined as: Load .reg= Common Voltage Meter L1 A +Vo +Sense VFL _ VNL x 100% VNL 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 V Load For more information, please visit the product page. rev. page 11 of 12 date 08/2007 DESCRIPTION: point of load converter PART NUMBER: VPOL5A-12-SMT 7.8 VPOL5A-12-SMT Output Voltage Adustment. 7.9 Output Ripple and Noise Measurement The output Voltage of the VPOL5A-12-SMT can be adjusted in the range 0.75V to 5.0V by connecting a single resistor on the motherboard (shown as R trim) in Figure 12. When Trim resistor is not connected the output voltage defaults to 0.75V The test set-up for noise and ripple measurements is shown in Figure 13. a coaxial cable with a 50ohm termination was used to prevent impedance mismatch reflections disturbing the noise readings at higher frequencies. +Vin +Vin +Vo +Vo Common Common Common Figure 13. Output Voltage Ripple and Noise Measurement Set-Up Figure 12. Trim-up Voltage Setup The value of Rtrim-up defined as: 10500 _ 1000 ) _ Vo .750 Rtrim-up is the external resistor in ohm, Vo is the desired output voltage To give an exa mple of the above calculation, to set a voltage of 3.3Vdc, Rtrim is given by: Where: Rtrim = ( R-Load Test Jack R trim-up Rtrim = ( 1uF Ceramic R-Load VPOL5A-12-SMT Common 10uF Tant. VPOL5A-12-SMT Trim 10500 _ 1000 ) _ 3 . .75 30 Rtrim = 3118 ohm For various output values various resistors are calculated and provided in Table 3 for co nvenience. 7.10 Output Capacitance #5)).#gS VPOL5A-12-SMT converters provide unconditional stability with or without external capacitors. For good transient response low ESR output capacitors should be located close to the point of load. For high current applications point has already been made in layout considerations for low resistance and low inductance tracks. Output capacitors with its associated ESR values have an impact on loop stability and bandwidth. #5)).#gSconverters are designed to work with load capacitance up-to 3,000uF. It is reco mmended that any additional capacitance, Maximum 3,000uF and low ESR, be connected close to the point of load and outside the remote compensation point. 7.11 VPOL5A-12-SMT Reflow Profile An example of the reflow profile is given in Figure 14. Equipment used: SMD HOT AIR REFLOW HD-350SAR Alloy: AMQ-M293TA or N C-SMQ92 IND-82088 SN63 REFLOW PROFILE Rtrim (Kohm) Open 22.33 13.00 9.00 7.40 5.00 3.12 1.47 Table 3 – Trim Resistor Values 240 200 TEMPERATURE (C) Vo,set (V) 0.75 1.2 1.5 1.8 2.0 2.5 3.3 5.0 160 120 80 40 0 0 30 60 90 120 150 180 210 240 TIME (SECONDS) Figure 14 VPOL5A-12-SMT Reflow Profile 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 For more information, please visit the product page. rev. page 12 of 12 date 08/2007 DESCRIPTION: point of load converter PART NUMBER: VPOL5A-12-SMT 8. Mechanical Outline Diagrams 8.2 VPOL5A-12-SMT Tape and Reel Dimensions 8.1 VPOL5A-12-SMT Mechanical Outline Diagrams Dimensions are in millimeters and inches Tolerance: x.xx ±0.02 in. (0.5mm) , x.xxx ±0.010 in. (0.25 mm) unless otherwise noted The Ta pe Reel dimensions for the VPOL5A-12-SMT module is shown in Figure 16. t BOTTOM VIEW OF BOARD 0.80 (20.3) 0.190 (4.83) 0.160 (4.06) GND 0.35 (8.9) 0.160 (4.06) TRIM 0.24 (6.09) max. 0.180 (4.06) VOUT 0.065 (1.65) 0.340 (8.64) 0.450 (11.43) VIN 0.062 (1.57) ON/OFF 0.06 (1.5) Surface Mount Contact 5 Places 0.090 0.05 (1.3) (2.29) Dimensions are in Inches (millimeters) Tolerances :x.xx ¡ Ó0.02in.( x.x ¡ Ó0.5mm) , unless otherwise noted x.xxx ¡ Ó0.010in. ( x.xx ¡ Ó0.25mm) Figure 15 VPOL5A-12-SMT Mechanical Outline Diagram W Ao Bo Ko P F E D D1 Po P2 t Figure 16 – VPOL5A-12-SMT Tape a nd Reel Dimensions 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382