Specifications are subject to change without notice.
Customers should verify device performance in their specific applications.
MX5A-12SA SMT Non-Isolated Power Module
Features
■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
■Low output ripple and noise
■High reliability
■Remote on/off
■Output overcurrent protection
(non-latching)
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.
Parameter Min. Nom. Max. Units Notes
INPUT
Voltage 10 12 14 Vdc
Current 3.5 Adc
Remote ON/OFF:
Low or Open = On 0.4 Vdc 10 µA max.
High = Off 2.4 Vin Vdc 1 mA max.
OUTPUT
Voltage Adjustment Range 0.75 5.5 Vdc
Current 0.0 5.0 Adc
Voltage Setpoint Accuracy -2.0 2.0 % Vo,set
Line Regulation 0.3 % Vo,set
Load Regulation 0.4 % Vo,set
Temperature Regulation 0.4 % 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
Dynamic Load Response:
50 % to 100 % Load or 100 % to 50 % Load; 200 mV 1 µF ceramic//10 µF tantalum capacitors
(∆i/∆t = 2.5 A/µs; 25 °C) 25 µs
50 % to 100 % Load or 100 % to 50 % Load; 50 mV 2 x 150 µF polymer capacitors
(∆i/∆t = 2.5 A/µs; 25 °C) 50 µs
GENERAL
MTBF 10,000 kHrs
Operating Temperature -40 +85 °C
Storage Temperature -55 +125 °C
Switching Frequency 300 kHz
Efficiency 81.5 % Vo,set = 1.2 Vdc
(Vin = 12 Vdc, TA= 25 °C, Full Load) 84.0 % Vo,set = 1.5 Vdc
85.0 % Vo,set = 1.8 Vdc
87.0 % Vo,set = 2.5 Vdc
89.0 % Vo,set = 3.3 Vdc
92.0 % Vo,set = 5.0 Vdc
Specifications
■Intermediate Bus architecture
■Distributed power applications
■Workstations and servers
■Telecom equipment
■Enterprise networks including LANs/WANs
■Latest generation ICs (DSP, FPGA, ASIC) and microprocessor powered applications
Applications
Specifications are subject to change without notice.
Customers should verify device performance in their specific applications.
MX5A-12SA SMT Non-Isolated Power Module
VIN ON/OFF
VOUTTRIMGND
20.3
(0.80)
4.83
(0.190)
2.29
(0.090) 1.3
(0.05)
1.5
(0.06)
1.47
(0.058)
8.64
(0.340)
11.43
(0.450)
8.89
(0.350)
4.06
(0.160)
4.57
(0.180)
4.06
(0.160)
Product Dimensions
Derating Output Current vs. Local Ambient Temp & Airflow
Recommended Pad Layout
REV. A 02/05
DIMENSIONS:
MM
(INCHES)
5.84
(0.230)
MAX.
5.56
(0.219)
REF.
1.57
(0.062)
L1 INDUCTOR
BOTTOM VIEW
SIDE VIEW
VIN
VOUT GNDTRIM
ON/OFF
0.25
(0.010)
17.53
(0.690)
4.57
(0.180)
1.3
(0.05)
1.5
(0.06)
8.89
(0.350)
8.64
(0.340)
4.06
(0.160) 4.83
(0.190)
4.06
(0.160)
RECOMMENDED PAD SIZE: MIN.X
3.05
(0.120)
2.41
(0.095)
MAX.X
3.43
(0.135)
2.79
(0.110)
Pick and Place Location
9.65
(0.380)
20.3
(0.80)
6.22
(0.245)
11.43
(0.450)
6
5
4
3
2
1
03025 4035 5045 55
Ambient Temperature (°C)
(Vin = 12 Vdc, Vo = 3.3 Vdc)
Output Current (A)
6560 7570 80 85
NC (0 LFM)
1.0 m/s (200 LFM)
0.5 m/s
(100 LFM)
TOLERANCES:
DECIMAL .X ± 0.5
(0.02)
DECIMAL .XX ± 0.25
(0.010)
Output Voltage Programming
Via external trim resistor between Trim and GND:
Rtrim = 10.5 - 1.0 kΩ
Vo- 0.7525
[]
Via application of external voltage between Trim and GND:
Vtrim = (0.7 - 0.0667 x {Vo - 0.7525})
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
How to Order
M X 5A - 12 S A
Configuration
• M = Surface Mount Device
Internal Identifier
Output Current (Amps)
Input Voltage (V)
Outputs
• S = Single
Output Voltage (V)
• A = Adjustable
Fixed output voltage parts and optional features available; contact factory.
