VPOL5A-12-SMT CUI Inc, VPOL5A-12-SMT Datasheet - Page 6

• Manufacturer Part Number: VPOL5A-12-SMT
• Description: CONVERTER DC/DC 5.0V OUT 5A SMD
• Manufacturer: CUI Inc
• Series: V-Infinity VPOL5Ar
• Type: Point of Load (POL) Non-Isolatedr

Specifications of VPOL5A-12-SMT

• Output: 0.75 ~ 5V
• Number Of Outputs: 1
• Power (watts): 25W
• Mounting Type: Surface Mount
• Voltage - Input: 8.3 ~ 14V
• Package / Case: 5-DIP SMD Module
• 1st Output: 5 VDC @ 5A
• Size / Dimension: 0.80" L x 0.45" W x 0.24" H (20.3mm x 11.4mm x 6.1mm)
• Power (watts) - Rated: 25W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 92%
• Approvals: cUL, UL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -
• Other names: 102-1290-2

PART NUMBER: VPOL5A-12-SMT
5.7 UVLO (Under-Voltage Lockout)
The voltage on the Vcc pin determines the start of the operation of the
Converter. When the input Vcc rises and exceeds about 8.0V the
converter initiates a soft start. The UVLO function in the converter has a
hysteresis (about 100mV) built in to provide noise immunity at start-up.
6. Safety
6.1 Input Fusing and Safety Considerations.
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
testing laboratory to UL/CSA 60950 3
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.
ON/OFF
Control
ON/OFF
Control
Figure 4. Negative Remote ON/OFF Input Drive Circuit
20050 SW 112
Figure 3. Positive Remote ON/OFF Input Drive Circuit
Q1
Q1
th
Ave. Tualatin, Oregon 97062
+Vin
Remote ON/OFF
Common
+Vin
Remote ON/OFF
Common
VPOL5A-12-SMT
VPOL5A-12-SMT
rd
Edition (North America) and
Common
Common
+Vo
+Vo
phone [phone] fax [phone]
DESCRIPTION: point of load converter
Figure 5. Recommended VPOL5A-12-SMT Footprint (Top View)
7. Applications
7.1 Layout Design Challenges.
In optimizing thermal design the PCB is utilized as a heat sink. Also
some heat is transferred from the VPOL5A-12-SMT module to the main
board through connecting pins. The system designer or the end user
must ensure that other components and metal in the vicinity of the
VPOL5A-12-SMT series meet the spacing requirements to which the
system is approved.
Low resistance and low inductance PCB layout traces are the norm and
should be used where possible. Due consideration must also be given
to proper low impedance tracks between power module, input and
output grounds. The recommended VPOL5A-12-SMT footprint as
shown as figure 5.
0.340
(8.64)
(1.5)
0.06
Recommended Pad Layout
Dimensions are in Inches ( millimetes )
0.05
(1.3)
0.180
(4.57)
ON/OFF
PAD SIZE
MIN : 0.120" x 0.095 "
MAX : 0.135" x 0.110 "
VOUT
0.160
(4.06)
(17.53)
TRIM
0.690
(4.06)
0.160
(0.25)
0.010
GND
VIN
0.190
(4.83)
rev.
page
date
(8.89)
0.350
08/2007
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