PL
IA
NT
Features
CO
M
■
*R
oH
S
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■
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Industry standard SMT package
Output voltage programmable from
0.75 Vdc to 5.5 Vdc via external resistor
5 A output current
Up to 92 % 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)
MX5A-12SA SMT Non-Isolated Power Module
Description
Bourns® MX5A-12SA 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
10
12
14
Vdc
3.5
Adc
Notes
INPUT
Voltage
Current
Remote ON/OFF:
Low or Open = On
High = Off
OUTPUT
Voltage Adjustment Range
Current
Voltage Setpoint Accuracy
Line Regulation
Load Regulation
Temperature Regulation
E
T
E
L
O
S
B
O
2.4
0.4
Vin
Vdc
Vdc
0.75
5.5
Vdc
Adc
0.0
5.0
-2.0
2.0
0.3
0.4
0.4
10 µA max.
1 mA max.
% Vo,set
% Vo,set
% Vo,set
% Vo,set
0 to +85 °C
Ripple (pk-pk) (20 MHz Bandwidth)
50
75
mVpk-pk
1 µF ceramic//10 µF tantalum capacitors
Ripple (rms)
15
30
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)
50
50
mV
µs
10,000
kHrs
2 x 150 µF polymer capacitors
GENERAL
MTBF
Operating Temperature
-40
+85
°C
Storage Temperature
-55
+125
°C
Switching Frequency
300
Efficiency
81.5
%
84.0
%
85.0
%
87.0
%
89.0
%
92.0
%
(Vin = 12 Vdc, TA= 25 °C, Full Load)
kHz
Vo,set = 1.2 Vdc
Vo,set = 1.5 Vdc
Vo,set = 1.8 Vdc
Vo,set = 2.5 Vdc
Vo,set = 3.3 Vdc
Vo,set = 5.0 Vdc
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})
MX5A-12SA SMT Non-Isolated Power Module
Product Dimensions
Recommended Pad Layout
BOTTOM VIEW
20.3
(0.80)
4.57
(0.180)
4.06
(0.160)
4.06
(0.160)
VOUT
4.57
(0.180)
4.83
(0.190)
GND
TRIM
VOUT
17.53
(0.690)
TRIM
8.89
(0.350)
0.25
(0.010)
ON/OFF
11.43
(0.450)
1.5
(0.06)
1.3
(0.05)
ON/OFF
1.5
(0.06)
2.29
(0.090)
4.83
(0.190)
8.64
(0.340)
8.64
(0.340)
VIN
4.06
(0.160)
GND
E
T
E
L
O
S
B
O
8.89
(0.350)
1.47
(0.058)
4.06
(0.160)
RECOMMENDED PAD SIZE:
VIN
2.41
3.05
X
MIN.
(0.120) (0.095)
3.43
2.79
X
MAX.
(0.135) (0.110)
Pick and Place Location
1.3
(0.05)
11.43
(0.450)
SIDE VIEW
5.84
(0.230)
MAX.
DIMENSIONS:
MM
(INCHES)
6.22
(0.245)
5.56
(0.219)
REF.
9.65
(0.380)
TOLERANCES:
20.3
(0.80)
0.5
(0.02)
0.25
DECIMAL .XX ±
(0.010)
DECIMAL .X ±
How to Order
L1 INDUCTOR
1.57
(0.062)
Internal Identifier
Output Current (Amps)
Derating Output Current vs. Local Ambient Temp & Airflow
(Vin = 12 Vdc, Vo = 3.3 Vdc)
Output Current (A)
6
1.0 m/s (200 LFM)
5
4
M X 5A - 12 S A
Configuration
• M = Surface Mount Device
Input Voltage (V)
Outputs
• S = Single
Output Voltage (V)
• A = Adjustable
Fixed output voltage parts and optional features available; contact factory.
0.5 m/s
(100 LFM)
NC (0 LFM)
3
2
1
0
25
30
35
40
45
50
55
60
65
70
Ambient Temperature (°C)
75
80
85
Reliable Electronic Solutions
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
REV. B 12/05
Specifications are subject to change without notice.
Customers should verify device performance in their specific applications.