PART NUMBER: VAT0.25-SMT Series DESCRIPTION: dc-dc converter

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PART NUMBER: VAT0.25-SMT Series DESCRIPTION: dc-dc converter

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02/2008
PART NUMBER: VAT0.25-SMT Series
DESCRIPTION: dc-dc converter
description
Designed convert fixed voltages into isolated voltages, VAT0.25-SMT series well suited providing board-mount local supplies wide range applications, including mixed analog/digital circuits, test measurement equip., process/machine controls, datacom/telecom fields, etc.
features
package construction isolation: 1000 heatsink required external component required standard pinout range: -40°C~+85°C
MODEL
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:
input voltage nominal range.
output voltage
output current max. min. (mA) (mA)
efficiency typ.
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
±3.3
specifications measured TA=25°C, humidity <75%, nominal input voltage rated output load unless otherwise specified. Unbalanced load:
OUTPUT
parameter output power voltage accuracy output ripple output noise line regulation load regulation conditions/description tolerance envelope graph 20MHz Bandwidth 20MHz Bandwidth change 1%(3.3V output) change 100% full load 3.3V output output output output output 100% full load 100% load, nominal input(24V input) 100% load, nominal input(5V, 12V)
Test ripple noise "parallel cable" method.
0.25 ±1.5 ±1.2 0.03
units mVpp mVpp %/°C
temperature coefficient switching frequency
notes:
*V-Infinity reserves right make changes products discontinue product service without notice, advise customers verify most up-todate product information before placing orders. V-Infinity assumes liability responsibility customer's applications using V-Infinity products other than repair replacing V-I's option) V-Infinity products meeting V-I's published specifications. Nothing will covered outside standard product warranty.
20050 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 503.612.2382
page date
02/2008
PART NUMBER: VAT0.25-SMT Series
DESCRIPTION: dc-dc converter
GENERAL SPECIFICATIONS
parameter output short circuit protection temperature rise full load cooling operating temp. range storage temp. range reflow soldering temp. storage humidity range case material MTBF conditions/description second max. 15°C typ., 25°C max. free convection -40°C +85°C -55°C +125°C 260°C (1.5mm from case seconds) plastic (UL94-V0) >3,500,000 hours
ISOLATION SPECIFICATIONS
parameter isolation voltage isolation resistance conditions/description flash tested minute test 1000 1000 units
OUTLINE DIMENSIONS RECOMMENDED LAYOUT PATTERN
6.76
(0.2 (0.17)
0.50
4.25
(0.0
(0.26)
(0.25
6.50
6.25
(Side View)
1.35MAX
(0.06)
5.00"
0.25
(0.0
1.85MAX
(0.07)
7.15
(0.2
(0.01)
15.24 (0.6 10.16 (0.4)
Function
-Vin +Vin -Vout +Vout
(Top View)
2.54
0.05
(0.02 0.00
(0.1 0.004)
11.2
(0.44)
Note: Pins 2.54mm(0.1) pitch; Widths 0.60 mm(0.02); Tolerances:±0.15mm(0.006); Unit: mm(inch)
TYPICAL CHARACTERISTICS
Tolerance Envelope Graph Output Power
+10% Nominal Voltage Output Voltage
(0.30)
7.50
Temperature Derating Graph
Typica
Load
+2.5% -2.5% -7.5%
Safe Operating Area
100%
Output Current
Ambient Temperature(°C)
20050 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 503.612.2382
page date
02/2008
PART NUMBER: VAT0.25-SMT Series
DESCRIPTION: dc-dc converter
Application Notes:
ensure this module operate efficiently reliably during operation, minimum output load should less than full load. This product should never operated under load conditions. actual output power very should increase load connecting resistor with proper resistance output parallel. parallel connection plug play. Overload Protection Under normal operating conditions, output circuit these products protection against overload. simplest method connect self-recovery fuse series input circuit breaker circuit. Output Voltage Regulation Over-voltage Protection Circuit simplest device output voltage regulation, over-voltage over-current protection linear voltage regulator with overheat protection that connected input output series (Figure
Figure
+Vin -Vin
+Vout
-Vout
Recommended Circuit want further decrease input/output ripple, "LC" filtering network connected input output ends dc-dc converter, (Figure
+Vin
+Vout
-Vin
-Vout
Figure
+Vin
+Vout
-Vin
Reflow Profile
Peak Temperature 260°C Sec. 220°C
-Vout
should also noted that inductance frequency "LC" filtering network should mutual interference. However, capacitance output filter capacitor must proper. capacitance large, startup problem might arise. recommended connect external capacitor application field Temperature (°C) staggered with dc-dc frequency avoid
Sec. (>220°C)
Time (Seconds)
20050 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 503.612.2382

PART NUMBER: VAT0.25-SMT Series DESCRIPTION: dc-dc converter

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