INNOLINE
DC/DC-Converter
with 3 year Warranty
R-5xxxA
EN-60950-1 Certified
2, 3, 4, 5 AMP
SIP12
Vertical &
Horizontal
●Auto-sense
●Non-Isolated
●Synchronous rectification design
●Adjustable Output voltage
●2, 3, 4 & 5AMP Adjustable Positive
Step Down Integrated Switching Regulator
●Over load protection (125% full load typical)
Remote ON/OFF Control(Ground Off)
●Wide Input Range
●UL94V-0 Package Material
●Continuous short circuit protection
(Short Circuit Input Current, Iin sc<50mA)
●Input voltage range 4.5V~18V
●Efficiency to 96%
Features
Selection Guide
Part Input Nominal Vout Output Efficiency
Number Range Output Voltage Adjust Range Current min.Vin 12V max.Vin
SIP12 (V) (V) (V) (A) (%) (%) (%)
R-521.2xA 4.5 – 18 1.2 1.0 – 3.0 2 83 79 75
R-521.8xA 4.5 – 18 1.8 1.1 – 4.5 2 88 85 82
R-522.5xA 4.5 – 18 2.5 1.6 – 5.5 2 91 88 86
R-523.3xA 4.5 – 18 3.3 1.6 – 5.5 2 92 90 89
R-525.0xA 6.5 – 18 5.0 3.0 – 5.5 2 95 93 92
R-531.2xA 4.5 – 18 1.2 1.0 – 3.0 3 85 84 82
R-531.8xA 4.5 – 18 1.8 1.1 – 4.5 3 89 88 86
R-532.5xA 4.5 – 18 2.5 1.6 – 5.5 3 92 91 89
R-533.3xA 4.5 – 18 3.3 1.6 – 5.5 3 94 93 92
R-535.0xA 6.5 – 18 5.0 3.0 – 5.5 3 96 95 94
R-541.2xA 4.5 – 18 1.2 1.0 – 3.0 4 82 81 79
R-541.8xA 4.5 – 18 1.8 1.1 – 4.5 4 87 86 85
R-542.5xA 4.5 – 18 2.5 1.6 – 5.5 4 91 89 88
R-543.3xA 4.5 – 18 3.3 1.6 – 5.5 4 93 92 91
R-545.0xA 6.5 – 18 5.0 3.0 – 5.5 4 95 94 93
R-551.2xA 4.5 – 18 1.2 1.0 – 3.0 5 81 80 78
R-551.8xA 4.5 – 18 1.8 1.1 – 4.5 5 86 85 84
R-552.5xA 4.5 – 18 2.5 1.6 – 5.5 5 90 89 88
R-553.3xA 4.5 – 18 3.3 1.6 – 5.5 5 92 91 90
R-555.0xA 7.0 – 18 5.0 3.0 – 5.5 5 94 93 92
Note: Vin -Vout ≥1.5V if adjust function is used!
Suffix x: (see mechanical drawing for details)
x = P pins vertical through hole
x = D pins bent for horizontal through hole mounting
The R-5XXX series is a high performance 1.2V to 5.0V , 2Amp to 5Amp,12-Pin SIP (single in-line package)
integrated switching regulator (ISR). Synchronous - rectified design yields excellent efficiencies up to 96%.
Short circuit protection reduces the short circuit input current to under 50mA. Autosense function compensates
for any losses in long circuit loops.
Description
RoHS
2011/65/EU
6/6
Refer to Application Notes
www.recom-power.com I-45REV: 1/2016
Characteristics Conditions Min. Typ. Max.
Output Voltage Range All Series 0.8 6.0V
Output Current R-52xxPA/DA 0.2 2.0A
R-53xxPA/DA 0.3 3.0A
R-54xxPA/DA 0.4 4.0A
R-55xxPA/DA 0.5 5.0A
Output Current Limit R-52xxPA/DA 2.5 3.0A
R-53xxPA/DA 3.75 4.25A
R-54xxPA/DA 5.0 5.5A
R-55xxPA/DA 6.0 6.5A
Short Circuit Input Current All Series 50mA
Short Circuit Protection Continuous, automatic recovery
Output Voltage Accuracy At 100% Load All Series ±1% ±2%
Line Voltage Regulation (Vin = min. to max. at full load) R-52xxPA/DA 0.25 0.5%
R-53xxPA/DA & R-54xxPA/DA & R-55xxPA/DA 0.5 1.0%
Load Regulation (10 to 100% full load) R-52xxPA/DA 0.5 1.0%
R-53xxPA/DA & R-54xxPA/DA & R-55xxPA/DA 1.0 2.0%
Ripple & Noise R-52xxPA/DA 40mVp-p 70mVp-p
R-53xxPA/DA & R-54xxPA/DA & R-55xxPA/DA 80mVp-p 120mVp-p
Transient Response (see note 1) 50% Load Change 100µs 200µs
Vout Over / Undershoot 100mV
Remote ON / OFF (see note 2) Open or High (Power ON) 4.5 18V
(positive logic) Low (Power OFF) 0.8V
Remote Off Input Current Remote ON/OFF low level 100µA
Max capacitance Load with normal start-up time, no external diodes 300µF
with <1 second start up time + diode protection circuit 6800µF
Switching Frequency 270 300 330kHz
Quiescent Current Vin = min. to max. at 0% load 20mA
Operating Temperature Range -40°C +85°C
Storage Temperature Range -40°C +125°C
Case Material Non-Conductive Black Plastic
Potting Material Epoxy (UL94V-0)
Internal Power Dissipation Io x Vo x (1-Efficiency) 1.4W
Package Weight 9g
Packing Quantity 15 pcs per Tube
MTBF (Nominal Vout, 100% load) Tamb. = +25°C 749 x 10³ hours
Tamb. = +85°C 150 x 10³ hours
EN General Safety Report: SPCLVD1301028-1 EN60950-1:2006 + A12:2011
R-5xxxA
R-5xxxPA_DA
Series
Specifications (refer to the standard application circuit, Ta: 25°C)
INNOLINE
DC/DC-Converter
Notes: 1. Requires an electrolytic or tantalum output capacitor for proper operation in all applications (the capacitor to be placed as close as possible to the output pins)
100µF for R-52xxPA/DA, R-53xxPA/DA and R-54xxPA/DA or 220µF for R-55xxPA/DA.
2. ON / OFF pin driven by TTL (logic gate), open-collector bipolar transistor or open-drain MOSFET.
3. Output Current vs. Input Voltage (see graph below).
Output Current vs Input Voltage
Ambient Temperature (°C)
90
60
20
40
1.4
10.5
Internal Power Dissipation (W)
0
80
85
How to calculate the max output current
The internal power dissipation(PD)follows the equation:
PD= Io × Vo × (1-η)
Io = PD/ Vo × (1-η)
Where PD= Internal power dissipation
Io = Output current
Vo = Output voltage
η= Efficiency
Example: R-545.0P , at Vin = 18Vdc , Vo = 5Vdc ,η=93% (see "Selection Guide" table)
(a) When Ta = 60°C , PD= 1.4 Watt (see adjacent diagram)
Io = 1.4(W) / 5(V) × (1-0.93) = 4(A)
(b) When Ta = 85°C , PD= 1 Watt (see adjacent diagram)
Io = 1(W) / 5(V) × (1-0.93) = 2.857(A)
(c) At Vin = 12Vdc efficiency = 94% (see "Selection Guide" table)
When Ta = 85°C , PD= 1 Watt (see adjacent diagram)
Io = 1(W) / 5(V) × (1-0.94) =3.33(A)
}
Detailed Information see
Application Notes chapter "MTBF"
I-46 www.recom-power.comREV: 1/2016
R-5xxxA
R-5xxxPA_DA
Series
Standard Application Circuit
INNOLINE
DC/DC-Converter
Vout
Com
Vin
TTL
Com
2, 3, 4 9, 10
R-52XX
R-53XX
R-54XX
R-55XX
R1
(Adjust down)
R2
(Adjust up)
12
5, 6, 7,8
1µF
(Optional) 1
C1
OFF
ON Q1
C2 (Required)
100µF,
ESR= 150mW max.)
(see Note 1)
11
Com
ON/OFF
Control
Q1 C1
100µF/25V
(REQ`D)
Vin
1
C2-1
100µF/10V
(REQ`D)
C2-2
100µF/10V
(REQ`D)
Com
Vout
must be connected
together
2
3
456789
10
11
12
1
2
3
456789
10
11
12
U2
U1
112
112
U1
U2
Keep 2mm to 5mm distance
between both converters
Component side
1
U1
U2
To Load
C1 1
12
12
C2-1
+Vin
C2-2
Com Com
+Vout
Sense
Solder side
Parallel Application Circuit
The R-52xx, R-53xx, R-54xx series can be used in parallel to upgrade the output current capacity for the
same output voltage.
For example, the R-543.3PA can parallel up with another R-554.3PA to give up to 8 amps or with the
R-533.3PA or R-523.3PA types to give output currents of up to 7 Amps or 6 Amps.
The R-55xx series cannot be paralleled.
Add a blocking diode to
Vout if current can flow
backwards into the out-
put, as this can damage
the converter..
www.recom-power.com I-47REV: 1/2016
R-5xxxA
Efficiency (%)
100
14
23
90
Output Current (A)
80
70
1.2V
1.8V
2.5V
3.3V
5.0V
5
Efficiency (%)
100
0.5 2.0
1.0 1.5
90
Output Current (A)
80
70
1.2V
1.8V
2.5V
3.3V
5.0V
R-53xx / R-54xx / R-55xx
Output Current Efficiency vs Iout (Vin = Min)
R-52xx
Output Current Efficiency vs Iout (Vin = Min)
Efficiency (%)
100
14
23
90
Output Current (A)
80
70
1.2V
1.8V
2.5V
3.3V
5.0V
5
R-53xx / R-54xx / R-55xx
Output Current Efficiency vs Iout (Vin = 18V)
R-52xx
Output Current Efficiency VS Iout (Vin = 18V)
R-5xxxPA_DA
Series
INNOLINE
DC/DC-Converter
Characteristics
Line Regulation (%)
1
1.8
05.0
2.3 3.3
1.2
0.5
Output Voltage (V)
Line Regulation (%)
1
1.8
05.0
2.3 3.3
1.2
0.5
Output Voltage (V)
R-53xx / R-54xx
Output Voltage Line Regulation VS Vout
R-52xx / R-55xx
Output Voltage Line Regulation VS Vout
Load Regulation (%)
2.0
5
020
10 15
1.5
Input Voltage (V)
1.0
0.5
1.2V
1.8V
2.5V
3.3V
5.0V
Load Regulation (%)
2.0
5
020
10 15
1.5
Input Voltage (V)
1.0
0.5
1.2V
1.8V
2.5V
3.3V
5.0V
R-53xx / R-54xx
Intput Voltage Load Regulation VS Vin
R-52xx / R-55xx
Intput Voltage Load Regulation VS Vin
I-48 www.recom-power.comREV: 1/2016
R-5xxxA
R-5xxxPA_DA
Series
INNOLINE
DC/DC-Converter
Table 1: Adjustment Resistor Values
2Adc R-521.2PA/DA R-521.8PA/DA R-522.5PA/DA R-523.3PA/DA 525.0PA/DA
3Adc R-531.2PA/DA R-531.8PA/DA R-532.5PA/DA R-533.3PA/DA 535.0PA/DA
4Adc R-541.2PA/DA R-541.8PA/DA R-542.5PA/DA R-543.3PA/DA 545.0PA/DA
5Adc R-551.2PA/DA R-551.8PA/DA R-552.5PA/DA R-553.3PA/DA 555.0PA/DA
Vout (nominal) 1.2Vdc 1.8Vdc 2.5Vdc 3.3Vdc 5.0Vdc
Vout (adj) R1 R2 R1 R2 R1 R2 R1 R2 R1 R2
0.8 (V)
0.9 (V) 740Ω
1.0 (V) 3.9KΩ
1.1 (V) 13KΩ1.05KΩ
1.2 (V) 2.1KΩ270Ω
1.3 (V) 37KΩ3.7KΩ750Ω
1.5 (V) 11.5KΩ10KΩ2.1KΩ390Ω
1.6 (V) 8.2KΩ18KΩ3.0KΩ750Ω
1.7 (V) 6.5KΩ41KΩ4.1KΩ1.2KΩ
1.8 (V) 5.2KΩ5.6KΩ1.7KΩ
1.9 (V) 4.3KΩ36KΩ7.5KΩ2.2KΩ
2.0 (V) 3.6KΩ1.8KΩ10.5KΩ2.8KΩ
2.4 (V) 2.1KΩ5.2KΩ82KΩ6.8KΩ
2.5 (V) 1.8KΩ4.3KΩ8.5KΩ
2.6 (V) 1.65KΩ3.6KΩ33KΩ10.5KΩ
3.0 (V) 1.05KΩ2.1KΩ6.2KΩ33KΩ470Ω
3.2 (V) 1.65KΩ4.1KΩ110KΩ1.6KΩ
3.3 (V) 1.5KΩ3.4KΩ2.2KΩ
3.4 (V) 1.35KΩ2.9KΩ36KΩ3.0KΩ
3.6 (V) 1.07KΩ2.2KΩ11KΩ4.7KΩ
3.9 (V) 780Ω1.4KΩ4.7KΩ8.5KΩ
4.5 (V) 390Ω650Ω1.6KΩ30KΩ
4.9 (V) 350Ω820Ω220KΩ
5.0 (V) 290Ω680Ω
5.1 (V) 220Ω560Ω28KΩ
5.5 (V) 39Ω190Ω2.6KΩ
www.recom-power.com I-49REV: 1/2016
R-5xxxA
Bottom
View
1 2 3 4 5 6 7 8 9
2.54
0.7
4.0
15.00
32.20
10 11 12
2.13
9.1
0.2
Bottom
View
4.0
0.7
0.7
1 2 3 4 5 6 7 8 9
2.54
0.7
15.00
32.20
10 11 12
9.1
0.2
RECOM
R-521.2PA
RECOM
R-521.2DA
2.13
R-5xxxPA_DA
Series
INNOLINE
DC/DC-Converter
Pin Connections
Pin # Name Description
1 ON / OFF Input pin : Active low (less than 0.8V) to disable the device
2, 3, 4 Vin Power input
5, 6, 7, 8 GND Input and output ground (common)
9 , 10 Vout Power output
11 Vout (Auto Sense) If unused this pin must be connected to Pin 9 and 10
12 Vout-Adj With external resistors R1,R2 to selected output voltage
Tolerance:
± 0.25 mm
Package Style and Pinning (mm)
SIP12 PIN Package
Add a blocking diode to Vout if
current can flow backwards into
the output, as this can damage
the converter when it is powered
down. Protection diodes are re-
quired for high capacitive loads.
The diode can either be fitted
across the device if the source is
low impedance or fitted in series
with the output (recommended).
Optional Diode Protection Circuit
Optional Protection 1: Optional Protection 2:
R-5/6/7xxx
GND
+Vout
+Vin
GND
R-5/6/7xxx
GND
+Vout
+Vin
GND
Diode
Trim output voltage
up 1 diode drop
Tolerance: xx.x ±0.5mm
xx.xx ±0.25mm
I-50 www.recom-power.comREV: 1/2016
The product information and specifications are subject to change without prior notice. RECOM products are not authorized for use in safety-critical applications (such as life support) without RECOM’s explicit
written consent. A safety-critical application is defined as an application where a failure of a RECOM product may reasonably be expected to endanger or cause loss of life, inflict bodily harm or damage property. The buyer
shall indemnify and hold harmless RECOM, its affiliated companies and its representatives against any damage claims in connection with the unauthorized use of RECOM products in such safety-critical applications.
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
RECOM:
R-521.2DA R-521.2PA R-521.8DA R-521.8PA R-522.5DA R-522.5PA R-523.3DA R-523.3PA R-525.0DA R-
525.0PA R-531.2DA R-531.2PA R-531.8DA R-531.8PA R-532.5DA R-532.5PA R-533.3DA R-533.3PA R-
535.0DA R-535.0PA R-541.2DA R-541.2PA R-541.8DA R-541.8PA R-542.5DA R-542.5PA R-543.3DA R-
543.3PA R-545.0DA R-545.0PA R-551.2DA R-551.2PA R-551.8DA R-551.8PA R-552.5DA R-552.5PA R-
553.3DA R-553.3PA R-555.0DA R-555.0PA