RECOM R-551.8PA

Features
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Auto-sense
Non-Isolation
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
Continuous short circuit protection
(Short Circuit Input Current, Iin<50mA)
Input voltage range 4.5V~18V
Efficiency to 96%
Inpu
Nominal
Vout
Output
Range
(V)
Output Voltage
(V)
Adjust Range
(V)
Current
(A)
min.Vin
(%)
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
Number
SIP12
DC/DC-Converter
R-5xxxPA
_DA Series
UL94V-0 Package Material
Selection Guide
Part
INNOLINE
Efficiency
12V max.Vin
(%)
(%)
2, 3, 4, 5 AMP
SIP12
Vertical &
Horizontal
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
Description
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). Synchronuous - rectified design yields excellent efficiencies up to 96%. Short circuit protection with crowbar function to reduce the short circuit input current
to under 50mA. Autosense function compensates for any losses in long circuit loops.
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27-March-2007
155
INNOLINE
R-5xxxPA_DA
Series
DC/DC-Converter
Specifications (refer to the standard application circuit, Ta: 25°C)
Characteristics
Conditions
Min.
Typ.
Max.
Output Voltage Range
All Series
0.8
6.0V
Output Current
R-52xxPA/DA
R-53xxPA/DA
R-54xxPA/DA
R-55xxPA/DA
0.2
0.3
0.4
0.5
2.0A
3.0A
4.0A
5.0A
Output Current Limit
R-52xxPA/DA
R-53xxPA/DA
R-54xxPA/DA
R-55xxPA/DA
Short Circuit Input Current
All Series
2.5
3.75
5.0
6.0
3.0A
4.25A
5.5A
6.5A
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
R-53xxPA/DA & R-54xxPA/DA & R-55xxPA/DA
0.25
0.5
0.5%
1.0%
Load Regulation (10 to 100% full load)
R-52xxPA/DA
R-53xxPA/DA & R-54xxPA/DA & R-55xxPA/DA
0.5
1.0
1.0%
2.0%
Ripple & Noise
R-52xxPA/DA
R-53xxPA/DA & R-54xxPA/DA & R-55xxPA/DA
40mVp-p
80mVp-p
Transient Response (see note 1)
50% Load Change
Vout Over / Undershoot
Remote ON / OFF (see note 2)
(positive logic)
Remote Off Input Current
Open or High (Power ON)
Low (Power OFF)
Remote ON/OFF low level
Switching Frequency
Quiescent Current
70mVp-p
120mVp-p
100µs
200µs
100mV
4.5
270
18V
0.8V
100µA
300
330kHz
Vin = min. to max. at 0% load
20mA
Operating Temperature Range
-40°C
+85°C
Storage Temperature Range
-40°C
+125°C
Internal Power Dissipation
MTBF (Nominal Vout, 100% load)
Io x Vo x (1-Efficiency)
1.4W
Tamb. = +25°C
749 x 10³ hours
Tamb. = +85°C
150 x 10³ hours
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).
156
27-March-2007
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INNOLINE
R-5xxxPA_DA
Series
DC/DC-Converter
Standard Application Circuit
11
2, 3, 4
Vin
TTL
R-52XX
R-53XX
R-54XX
R-55XX
1µF
(Optional)
OFF
C1
ON
1
Q1
R1
(Adjust down)
9, 10
Add a blocking diode to
Vout if current can flow
backwards into the output, as this can damage
the converter..
Vout
12
C2 (Req'd)
R2
5, 6, 7,8
(Adjust up)
100µF/10V
or 220µF/10V
(see Note 1)
Com
Com
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.
Vin
ON/OFF
Control
Q1
C1
100µF/25V
(REQ`D)
1
2
3
4
U1
5
7
6
12
11
10
8 9
Vout
C2-1
100µF/10V
(REQ`D)
Com
Com
C2-2
100µF/10V
(REQ`D)
4
3
2
1
Component side
5
7
6
U2
8
9
10
11
12
must be connected
together
Solder side
1
C1
+Vin
Com
12
1
12 U1
U1
C2-1
1
12 U2
12
Keep 2mm to 5mm distance
between both converters
1
U2
C2-2
Com
+Vout
Sense
To Load
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27-March-2007
157
R-5xxxPA_DA
Series
INNOLINE
DC/DC-Converter
Output Current vs Input Voltage
Ambient Temperature (°C)
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)
90
85
80
60
40
20
0
0.5
1
1.4
Internal Power Dissipation (W)
Characteristics
R-53xx / R-54xx
Output Voltage Line Regulation VS Vout
R-52xx / R-55xx
Output Voltage Line Regulation VS Vout
1
Line Regulation (%)
0.5
0
1.8
1.2
Output Voltage (V)
2.3
0
R-53xx / R-54xx
Intput Voltage Load Regulation VS Vin
1.8V
2.5V
3.3V
5.0V
Load Regulation (%)
1.5
1.0
0.5
158
10
15
2.3
5.0
3.3
2.0
1.2V
5
Input Voltage (V)
1.8
1.2
Output Voltage (V)
R-52xx / R-55xx
Intput Voltage Load Regulation VS Vin
2.0
0
0.5
5.0
3.3
1.5
Load Regulation (%)
Line Regulation (%)
1
1.0
1.2V
1.8V
2.5V
0.5
3.3V
5.0V
0
20
27-March-2007
5
Input Voltage (V)
10
15
20
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R-5xxxPA_DA
Series
INNOLINE
DC/DC-Converter
Characteristics
R-52xx
Output Current Efficiency vs Iout (Vin = Min)
R-53xx / R-54xx / R-55xx
Output Current Efficiency vs Iout (Vin = Min)
100
100
5.0V
3.3V
2.5V
1.8V
90
3.3V
2.5V
1.8V
80
1.2V
70
1
2
Output Current (A)
1.2V
R-53xx / R-54xx / R-55xx
Output Current Efficiency vs Iout (Vin = 18V)
70
0.5
1.0
Output Current (A)
2.0
1.5
R-52xx
Output Current Efficiency VS Iout (Vin = 18V)
100
100
1.2V
70
1
2
Output Current (A)
4
3
80
70
Efficiency (%)
1.8V
80
5.0V
3.3V
2.5V
1.8V
1.2V
90
5.0V
3.3V
2.5V
90
Efficiency (%)
80
5
4
3
90
Efficiency (%)
Efficiency (%)
5.0V
5
60
50
40
0.5
1.0
Output Current (A)
2.0
1.5
Package Style and Pinning (mm)
SIP12 PIN Package
3rd angle
projection
32.20
15.00
32.20
9.1
RECOM
R - 5 2 1 . 2 PA
15.00
1 2 3 4 5 6 7 8 9 10 11 12
0.7
RECOM
R-521.2DA
0.2
1 2 3 4 5 6 7 8 9 10 11 12
4.0
2.13
9.1
2.54
2.13
0.7
2.54
0.2
Bottom
View
Bottom
View
0.7
4.0
0.7
Pin Connections
Pin #
Name
Description
1
ON / OFF
2, 3, 4
Vin
Power input
5, 6, 7, 8
GND
Input and output ground (common)
Vout
Power output
9 , 10
11
Vout (Auto Sense)
12
Vout-Adj
Input pin : Active low (less than 0.8V) to disable the device
If unused this pin must be connected to Pin 9 and 10
With external resistors R1,R2 to selected output voltage
Tolerance:
± 0.25 mm
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27-March-2007
159
INNOLINE
R-5xxxPA_DA
Series
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
R-525.0PA/DA
3Adc
R-531.2PA/DA
R-531.8PA/DA
R-532.5PA/DA
R-533.3PA/DA
R-535.0PA/DA
4Adc
R-541.2PA/DA
R-541.8PA/DA
R-542.5PA/DA
R-543.3PA/DA
R-545.0PA/DA
5Adc
R-551.2PA/DA
R-551.8PA/DA
R-552.5PA/DA
R-553.3PA/DA
R-555.0PA/DA
1.2Vdc
1.8Vdc
2.5Vdc
3.3Vdc
5.0Vdc
Vout (nominal)
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)
13KΩ
1.05KΩ
1.2 (V)
2.1KΩ
270Ω
1.3 (V)
37KΩ
3.7KΩ
750Ω
1.5 (V)
11.5KΩ
10KΩ
2.1KΩ
390Ω
1.6 (V)
8.2KΩ
18KΩ
3.0KΩ
750Ω
1.7 (V)
6.5KΩ
41KΩ
4.1KΩ
1.2KΩ
1.8 (V)
5.2KΩ
5.6KΩ
1.7KΩ
1.9 (V)
4.3KΩ
36KΩ
7.5KΩ
2.2KΩ
2.0 (V)
3.6KΩ
1.8KΩ
10.5KΩ
2.8KΩ
2.4 (V)
2.1KΩ
5.2KΩ
82KΩ
6.8KΩ
2.5 (V)
1.8KΩ
4.3KΩ
2.6 (V)
1.65KΩ
3.6KΩ
33KΩ
10.5KΩ
3.0 (V)
1.05KΩ
2.1KΩ
6.2KΩ
33KΩ
470Ω
3.2 (V)
1.65KΩ
4.1KΩ
110KΩ
1.6KΩ
3.3 (V)
1.5KΩ
3.4KΩ
3.4 (V)
1.35KΩ
2.9KΩ
36KΩ
3.0KΩ
3.6 (V)
1.07KΩ
2.2KΩ
11KΩ
4.7KΩ
3.9 (V)
780Ω
1.4KΩ
4.7KΩ
8.5KΩ
4.5 (V)
390Ω
650Ω
1.6KΩ
30KΩ
4.9 (V)
350Ω
820Ω
220KΩ
5.0 (V)
290Ω
680Ω
5.1 (V)
220Ω
560Ω
28KΩ
5.5 (V)
39Ω
190Ω
2.6KΩ
160
27-March-2007
8.5KΩ
2.2KΩ
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