MX5A-3-5SA Bourns Inc., MX5A-3-5SA Datasheet - Page 8

• Manufacturer Part Number: MX5A-3-5SA
• Description: CONV DC/DC 3-5V 5A ADJ OUT SMD
• Manufacturer: Bourns Inc.
• Series: MX(T)r
• Type: Point of Load (POL) Non-Isolated with Remote On/Offr

Specifications of MX5A-3-5SA

• Output: 0.75 ~ 3.63V
• Number Of Outputs: 1
• Power (watts): 18W
• Mounting Type: Surface Mount
• Voltage - Input: 3 ~ 5.5V
• Package / Case: 5-DIP SMD Module
• 1st Output: 0.75 ~ 3.63 VDC @ 5A
• Size / Dimension: 0.80" L x 0.45" W x 0.23" H (20.3mm x 11.4mm x 5.8mm)
• Power (watts) - Rated: 18.2W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 94%
• Output Power: 18 W
• Input Voltage Range: 3 V to 5.5 V
• Input Voltage (nominal): 3.5 V
• Output Voltage (channel 1): 0.75 V to 3.63 V
• Output Current (channel 1): 5 A
• Output Type: Adjustable
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: MX5A-3-5SATR

Input Considerations
The input must have a stable low impedance AC source for optimum performance. This can be accomplished with external ceramic
capacitors, tantalum capacitors and/or polymer capacitors. Using low impedance tantalum capacitors requires about 20 µF per Amp
and an ESR of 250 mΩ per Amp of output current. For a 5 A converter, tantalum capacitors with a combined value of 100 µF and
50 mΩ would be adequate. This can be implemented with (2) 47 µF tantalum capacitors with an ESR of 100 mΩ. Ceramic capacitors
are also recommended to reduce high frequency ripple on the input.
Output Considerations
To maintain the specified output ripple and transient response, external capacitors must be used. An external 1 µF ceramic capacitor in
parallel with a 10 µF low ESR tantalum capacitor will usually meet the specified performance. Improved performance can be achieved
by using more capacitance. Low ESR polymer capacitors may also be used. Two 100 µF, 9 mΩ or lower ESR capacitors are
recommended.
Safety Information
In order to comply with safety requirements the user must provide a fuse in the unearthed input line. This is to prevent earth being
disconnected in the event of a failure.
The converter must be installed as per guidelines outlined by the various safety approvals if safety agency approval is required for the
overall system.
Overtemperature Protection
The device will shut down if it becomes too hot (typically 135 °C – at controller IC). Once the converter cools, it automatically restarts.
This feature does not guarantee the converter won’t be damaged by temperatures above its rating.
Overcurrent Protection
The device has an internally set output current limit to protect it from overloads, placing the unit in hiccup mode. Once the overload is
removed the converter automatically resumes normal operation. No user adjustments are available. An external fuse in series with the
input voltage is also required for complete overload protection.
Input Undervoltage Lockout
The device operation is disabled if the input voltage drops below the specified input range. Once the input returns to the specified
range operation automatically resumes. No user adjustments are available.
Remote On/Off
The MX5A-3-5SA comes standard with Active LOW with Negative On/Off logic, i.e., OPEN or LOW (< 0.4 V) will turn ON the device. To
turn the device OFF, increase the voltage level above 2.4 V, placing the part into low dissipation sleep mode. The signal level of the
On/Off pin input is defined with respect to ground.
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Operating Information
MX5A-3-5SA SMT Non-Isolated Power Module
Fig. 23 Circuit Configuration for using Negative Logic On/Off
MX5A-3-5SA
Customers should verify device performance in their specific applications.
Specifications are subject to change without notice.