PL
IA
NT
Features
CO
M
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*R
oH
S
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Industry standard SIP package
Output voltage programmable from
0.75 Vdc to 5.5 Vdc via external resistor
3 A output current
Up to 95 % efficiency
Small size, low profile
Cost-efficient
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Low output ripple and noise
High reliability
Remote on/off
Output overcurrent protection
(non-latching)
SX3A-12SA(-P) SIP Non-Isolated Power Module
Description
Bourns® Model SX3A-12SA(-P) is a non-isolated DC-DC converter offering designers a cost and space-efficient solution with standard
features such as remote on/off, precisely regulated programmable output voltage and overcurrent protection.
Specifications
Parameter
Min.
Nom.
Max.
Units
Notes
8.3
12
14
Vdc
Adc
18 V max. for -W version
INPUT
Voltage
Current
Remote ON/OFF:
Low or Open =
High =
2.0
Standard
On
Off
OUTPUT
Voltage Adjustment Range
Current
Voltage Setpoint Accuracy
Line Regulation
Load Regulation
Temperature Regulation
E
T
E
L
O
S
B
O
-P Option
Off
On
2.4
0.4
Vin
Vdc
Vdc
0.75
5.5
Vdc
0.0
3.0
-2.5
2.5
Adc
% Vo,set
0.3
% Vo,set
0.4
% Vo,set
0.4
10 µA max.
1 mA max.
Ripple (pk-pk) (20 MHz Bandwidth)
30
50
% Vo,set
mVpk-pk
1 µF ceramic//10 µF tantalum capacitors
Ripple (rms)
10
15
mVrms
1 µF ceramic//10 µF tantalum capacitors
1 µF ceramic//10 µF tantalum capacitors
Dynamic Load Response:
50 % to 100 % Load or 100 % to 50 % Load;
(∆i/∆t = 2.5 A/µs; 25 °C)
200
25
mV
µs
50 % to 100 % Load or 100 % to 50 % Load;
(∆i/∆t = 2.5 A/µs; 25 °C)
75
100
mV
µs
13,000
kHrs
0 to +85 °C
2 x 100 µF polymer capacitors
GENERAL
MTBF
Operating Temperature
-40
+85
°C
Storage Temperature
-55
+125
°C
Switching Frequency
300
kHz
Efficiency
86.0
%
Vo,set = 1.2 Vdc
88.0
%
90.0
%
Vo,set = 1.5 Vdc
Vo,set = 1.8 Vdc
91.0
%
Vo,set = 2.5 Vdc
93.0
%
Vo,set = 3.3 Vdc
95.0
%
Vo,set = 5.0 Vdc
(Vin = 12 Vdc, TA= 25 °C, Full Load)
Applications
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Intermediate Bus architecture
Distributed power applications
Workstations and servers
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Telecom equipment
Enterprise networks including LANs/WANs
Latest generation ICs (DSP, FPGA, ASIC) and microprocessor powered applications
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
Specifications are subject to change without notice.
Customers should verify device performance in their specific applications.
Output Voltage Programming
Via external trim resistor between Trim and GND:
Rtrim =
[
Via application of external voltage between Trim and GND:
]
10.5
- 1.0 kΩ
Vo - 0.7525
Vtrim = (0.7 - 0.0667 x {Vo - 0.7525})
SX3A-12SA(-P) SIP Non-Isolated Power Module
Product Dimensions
Recommended Hole Pattern
BACK VIEW OF BOARD
COMPONENT SIDE FOOTPRINT
22.9
(0.90)
23.4
(0.92)
OUTLINE AREA
10.2
(0.40)
9.8
(0.385)
5
4
3
2
1
5 PINS
Die-Tech 315-0969-00
0.64
0.38
X
(0.025) (0.015)
4.9
(0.19)
5.7
(0.23)
1.5
(0.06)
2.54
(0.100)
7.6
(0.30)
E
T
E
L
O
S
B
O
1.09
(0.043)
PLATED
THROUGH-HOLE
1.63
(0.064)
PAD SIZE
BOTH SIDES
15.24
(0.600)
17.78
(0.700)
1.3
(.005)
2.54
(0.100)
20.32
(0.800)
15.24
(0.600)
17.78
(0.700)
20.32
(0.800)
Pinout Detail
PIN
1
2
3
4
5
SIDE VIEW
6.6
(0.260)
MAX.
6.36
(0.250)
REF.
DIMENSIONS:
MM
(INCHES)
L1 (REF.)
FUNCTION
VOUT
TRIM
GND
VIN
ON/OFF
How to Order
S X 3A - 12 S A (-P)
Configuration
• S = SIP
TOLERANCES:
0.5
(0.02)
0.25
DECIMAL .XX ±
(0.010)
DECIMAL .X ±
Internal Identifier
Output Current (Amps)
Input Voltage (V)
Outputs
• S = Single
Output Voltage (V)
• A = Adjustable
0.64
(0.025)
4.62
(0.182)
Optional Positive On/Off Logic
Fixed output voltage parts and optional features available; contact factory.
Derating Output Current vs. Local Ambient Temp & Airflow
(Vin = 12 Vdc, Vo = 3.3 Vdc)
3.5
Output Current (A)
3.0
2.5
NC (0 LFM)
2.0
1.5
Asia-Pacific:
Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116
Europe:
Tel: +41-41 768 5555 • Fax: +41-41 768 5510
The Americas: Tel: +1-951 781-5500 • Fax: +1-951 781-5700
www.bourns.com
1.0
0.5
0.0
25
30
35
40
45
50
55
60
65
70
Ambient Temperature (°C)
75
80
85
REV. A 11/06
Specifications are subject to change without notice.
Customers should verify device performance in their specific applications.