rev. description features Designed to convert fixed voltages into isolated voltages, the VAT0.25-SMT series is well suited for providing board-mount local supplies in a wide range of applications, including mixed analog/digital circuits, test & measurement equip., process/machine controls, datacom/telecom fields, etc... ·SMT package ·internal SMD construction ·I/O isolation: 1000 V dc ·no heatsink required ·no external component required ·industry standard pinout ·temperature range: -40°C~+85°C input voltage nominal range. (V dc) (V dc) VAT0.25-S5-D3.3-SMT VAT0.25-S5-D5-SMT VAT0.25-S5-D9-SMT VAT0.25-S5-D12-SMT VAT0.25-S5-D15-SMT VAT0.25-S12-D5-SMT VAT0.25-S12-D9-SMT VAT0.25-S12-D12-SMT VAT0.25-S12-D15-SMT VAT0.25-S24-D5-SMT VAT0.25-S24-D9-SMT VAT0.25-S24-D12-SMT VAT0.25-S24-D15-SMT notes: 5 5 5 5 5 12 12 12 12 24 24 24 24 1. 2. 1 of 3 date date 02/2008 DESCRIPTION: dc-dc converter PART NUMBER: VAT0.25-SMT Series MODEL page page 4.5~5.5 4.5~5.5 4.5~5.5 4.5~5.5 4.5~5.5 10.8~13.2 10.8~13.2 10.8~13.2 10.8~13.2 21.6~26.4 21.6~26.4 21.6~26.4 21.6~26.4 output voltage output current max. min. (mA) (mA) (V dc) ±3.3 ±5 ±9 ±12 ±15 ±5 ±9 ±12 ±15 ±5 ±9 ±12 ±15 ±38 ±25 ±14 ±11 ±9 ±25 ±14 ±11 ±9 ±25 ±14 ±11 ±9 ±4 ±3 ±2 ±2 ±1 ±3 ±2 ±2 ±1 ±3 ±2 ±2 ±1 efficiency typ. (%) 62 64 65 67 66 65 64 63 64 61 62 63 65 All specifications measured at TA=25°C, humidity <75%, nominal input voltage and rated output load unless otherwise specified. Unbalanced load: ±5% OUTPUT parameter output power voltage accuracy output ripple output noise line regulation conditions/description see tolerance envelope graph @ 20MHz Bandwidth @ 20MHz Bandwidth for Vin change of 1%(3.3V output) for Vin change of 1% 10% to 100% full load 3.3V output 5V output 9V output 12V output 15V output 100% full load 100% load, nominal input(24V input) 100% load, nominal input(5V, 12V) load regulation temperature coefficient switching frequency notes: 1. min nom max 0.25 units W 50 75 75 150 ±1.5 ±1.2 mVpp mVpp % % 15 10 6.5 6.0 6.0 20 15 15 15 15 0.03 % % % % % %/°C KHz KHz 700 150 Test ripple and noise by “parallel cable” method. *V-Infinity reserves the right to make changes to its products or to discontinue any product or service without notice, and to advise customers to verify the most up-todate product information before placing orders. V-Infinity assumes no liability or responsibility for customer’s applications using V-Infinity products other than repair or replacing (at V-I’s option) V-Infinity products not meeting V-I’s published specifications. Nothing will be covered outside of standard product warranty. 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 page 2 of 3 date 02/2008 DESCRIPTION: dc-dc converter PART NUMBER: VAT0.25-SMT Series GENERAL SPECIFICATIONS parameter output short circuit protection temperature rise at full load cooling operating temp. range storage temp. range reflow soldering temp. storage humidity range case material MTBF conditions/description 1 second max. 15°C typ., 25°C max. free air convection -40°C ~ +85°C -55°C ~ +125°C 260°C (1.5mm from case for 10 seconds) ≤95% plastic (UL94-V0) >3,500,000 hours ISOLATION SPECIFICATIONS parameter isolation voltage isolation resistance conditions/description flash tested for 1 minute test at 500 V dc min 1000 1000 nom max OUTLINE DIMENSIONS & RECOMMENDED LAYOUT PATTERN 6.76 0.50 4.25 (0.17) (0.25 ) 6.50 6.25 (0.26) (0.2 7) A (Side View) 0.25 0.3 7.15 (0.07) (0.01) (0.2 8) 15.24 (0.6 ) 7.50 2.54 10 9 8 (0.30) (0.44) 11.2 MAX 10.16 (0.4) 7 6 (Top View) 0.1 0.6 0.05 (0.1 0.004) (0.02 0.00 2) 5.00" (0.06) 1.85MAX (0.0 1) (0.0 2) 1.35MAX 1 2 3 4 5 Pin Function 1 2 3 4 5 6 7 8 9 10 -Vin +Vin NC Com -Vout NC +Vout NC NC NC Note: All Pins on a 2.54mm(0.1) pitch; All Pin Widths are 0.60 mm(0.02); Tolerances:±0.15mm(0.006); Unit: mm(inch) TYPICAL CHARACTERISTICS Tolerance Envelope Graph Temperature Derating Graph Typica l Output Voltage +5% Nominal Voltage Load L ine +2.5% -2.5% -7.5% Output Power (%) 120 +10% 100 80 60 40 20 0 10% 50% Output Current (%) 100% Safe Operating Area -40 0 40 80 120 Ambient Temperature(°C) 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382 units V dc MΩ page 3 of 3 date 02/2008 DESCRIPTION: dc-dc converter PART NUMBER: VAT0.25-SMT Series Application Notes: - To ensure this module can operate efficiently and - Output Voltage Regulation and Over-voltage reliably during operation, the minimum output load Protection Circuit should not be less than 10% of the full load. This The simplest device for output voltage regulation, product should never be operated under no load over-voltage and over-current protection is a linear conditions. If the actual output power is very low you voltage regulator with overheat protection that is should increase the load by connecting a resistor connected to the input or output end in series with the proper resistance at the output end in (Figure 2). parallel. No parallel connection or plug and play. - Overload Protection Under normal operating conditions, the output circuit Figure 2 of these products has no protection against overload. The simplest method is to connect a self-recovery +Vin fuse in series at the input end or add a circuit +Vout REG Com DC DC breaker to the circuit. -Vin -Vout - Recommended Circuit If you want to further decrease the input/output +Vout REG +Vin ripple, an “LC” filtering network may be connected to Com DC DC the input and output ends of the dc-dc converter, see -Vin (Figure 1). -Vout REG Figure 1 L L +Vout +Vin C C -Vin DC DC L Com C Reflow Profile -Vout Peak Temperature 260°C for 10 Sec. Max 250 It should also be noted that the inductance and 220°C the frequency of the “LC” filtering network should mutual interference. However, the capacitance of the output filter capacitor must be proper. If the capacitance is too large, a startup problem might arise. It is not recommended to connect any external capacitor in the application field . Temperature (°C) be staggered with the dc-dc frequency to avoid 200 90 Sec. max (>220°C) 150 100 50 0 Time (Seconds) 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382