Datasheet

ManualsBrandsRecom ManualsBoard Mounted DC / DC ConvertersDC/DC Converter 4.5 ... 28V 6V

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REV.: 1/2019 RPX-1

DC/DC Converter

RPX-2.5

Description

The RPX-2.5 is a buck converter with integrated inductor in a tiny 4.5mm x 4mm x 2mm thermally-

enhanced QFN package (the smallest in its class). The input range is from 4.5 to 28VDC, allowing

5V, 12V or 24V supply voltages to be used. The output voltage can be set with two resistors in the

range from 1.2V up to 6V. The output current is up to 2.5A and is fully protected against continuous

short-circuits, output overcurrent or over-temperature faults. The enable pin features an internal pull-up

current source, so will operate with open-drain, open-collector, logic gate or switched inputs (leave open

if not used).

Features

Power

Module

• Buck regulator power module with integrated shielded inductor

• 28V maximum input voltage

• 2.5A maximum output current

• SCP, OCP, OTP, OVP and UVLO protection

• 4.5mm x 4mm low proﬁle QFN package

• Flip-Chip technology for improved thermal management

• Efﬁciency up to 91%

Notes:

Note1: Refer to “Safe Operating Area”

Note2: Efﬁciency is tested at Vin= 12V, Iout= 1A, Vout= 5V

Note3: Max. Cap Load is tested at nominal input and full resistive load

Selection Guide

Part Input Voltage Vout Output Efﬁciency Max. Capacitive

Number Range Adjust Range Current max. max.

(2)

Load

(3)

[VDC]

(1)

[VDC]

(1)

[A] [%] [µF]

RPX-2.5 4.5-28 1.2-6 2.5 91 500

2.5 Amp

QFN

Package

Model Numbering

Output Current Packaging

(4)

RPX-2.5-CT

Speciﬁcations (measured @ ta= 25°C, 12Vin, 3.3Vout, full load unless otherwise stated, refer to test set up)

ABSOLUTE MAXIMUM RATINGS

Parameter Condition Min. Typ. Max.

Absolute Maximum Voltage

(5)

Vin

-0.3VDC 30VDC

CTRL, FB

-0.3VDC 7VDC

-0.3VDC 30VDC

SW transient

-5VDC 30VDC

Vout

-0.3VDC 7VDC

Shock

according to MIL-STD-883D, method

2002.3; 1ms, 1/2 sine, mounted

1500G

Vibration

according to MIL-STD-883D, method

2007.7; 20Hz-2kHz

20G

Operating IC Junction Temperature (T

)

-40°C +125°C

Operating Ambient Temperature (T

AMB

)

-40°C +85°C

Storage Temperature (T

STO

) -55°C +150°C

Notes:

Note5: Stresses beyond those listed under absolute maximum ratings can cause permanent damage

to the device. (Values are at non-operating)

Notes:

Note4: add sufﬁx “-CT” for bag packaging for more details refer to “PACKAGING INFORMATION”

without sufﬁx, standard tape and reel packaging

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Summary of content (8 pages)

PAGE 1
• • • • • • • Features Power Module Buck regulator power module with integrated shielded inductor 28V maximum input voltage 2.5A maximum output current SCP, OCP, OTP, OVP and UVLO protection 4.5mm x 4mm low profile QFN package Flip-Chip technology for improved thermal management Efficiency up to 91% Description The RPX-2.5 is a buck converter with integrated inductor in a tiny 4.5mm x 4mm x 2mm thermallyenhanced QFN package (the smallest in its class). The input range is from 4.
PAGE 2
RPX-2.5 DC/DC Converter Series Specifications (measured @ ta= 25°C, 12Vin, 3.3Vout, full load unless otherwise stated, refer to test set up) OPERATING RATINGS Parameter Condition Min. 4.5VDC Input Voltage Range Typ. Max. 4.1VDC 3.6VDC 4.4VDC 3.9VDC 28VDC (6) Under Voltage Lockout (UVLO) (default setting) (7) DC-DC ON DC-DC OFF 3.8VDC 3.3VDC Output Voltage Adjust Range refer to “OUTPUT VOLTAGE SETTING” 1.
PAGE 3
RPX-2.5 DC/DC Converter Series Specifications (measured @ ta= 25°C, 12Vin, 3.3Vout, full load and after warm-up unless otherwise stated, refer to test set up) Efficiency vs. output current Vout= 5VDC, Vin= 12VDC (2.5A max) 100 100 90 90 80 80 70 70 Efficiency [%] Efficiency [%] Vout= 3.3VDC, Vin= 12VDC (2.
PAGE 4
RPX-2.5 DC/DC Converter Series Specifications (measured @ ta= 25°C, 12Vin, 3.3Vout, full load and after warm-up unless otherwise stated, refer to test set up) OUTPUT VOLTAGE SETTING open open DNC SW The recommended value of RFBT is 10kΩ. The values for trim resistors shown in trim tables below are according to standard E96 values; therefore, the specified voltage may slightly vary.
PAGE 5
RPX-2.5 DC/DC Converter Series Specifications (measured @ ta= 25°C, 12Vin, 3.3Vout, full load and after warm-up unless otherwise stated, refer to test set up) CTRL ON/OFF The external CTRL input can also be used to disable the converter by pulling the CTRL pin to ground. An internal pull-up current source allows an external switch, open-collector transistor, open-drain transistor or a 3.3V/5V logic gate to be used to drive the CTRL pin. The UVLO adjust and external CTRL functions can be combined.
PAGE 6
DC/DC Converter Series Specifications (measured @ ta= 25°C, 12Vin, 3.3Vout, full load and after warm-up unless otherwise stated, refer to test set up) Vout= 5VDC Thermal Derating (11) 2.5 Output Current [A] 2 1.5 1 12Vin 24Vin 28Vin 0.5 0 -40 -20 0 20 40 60 80 100 120 130 Ambient Temperature [°C] Notes: Note11:Tested with 54.0 x 85.6mm 2 layer PCB with 105µm copper Input voltage vs.
PAGE 7
RPX-2.5 DC/DC Converter Series Specifications (measured @ ta= 25°C, 12Vin, 3.3Vout, full load and after warm-up unless otherwise stated, refer to test set up) EMC Filtering suggestions for EN55032 open open DNC SW (Vin= 12VDC; Vout= 5VDC; Iout= 2.5A) L1 VIN VIN C1 CIN1 VOUT RPX-2.
PAGE 8
RPX-2.5 DC/DC Converter Series Specifications (measured @ ta= 25°C, 12Vin, 3.3Vout, full load and after warm-up unless otherwise stated, refer to test set up) Recommended Stencil (Top View) 2X (1.85) 2X (1.7) 2X (0.85) SYMM 7 6 2 1 5 9 8 7 2 5 2X (2.1) 6X 0.61 4 3 4 8X (0.3) 6X (0.65) 3 1.95 2X (1.9) 2X (1.05) PKG 0.000 0.000 PKG 6 2X (1.735) 4X (0.3) 8 3X (0.4) 9 1 2X (0.925) SYMM 2X (0.05) 3X 1.0 4X (0.7) 2X (0.115) 0.96 6X (0.92) 8X (0.375) 6X (1.165) 0.