R-521.2PA Datasheet PDF - RECOM

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R-521.2PA
RECOM

Part Number R-521.2PA
Description SIP12 Vertical & Horizontal
Page 6 Pages


R-521.2PA datasheet pdf
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Features
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
UL94V-0 Package Material
Continuous short circuit protection
(Short Circuit Input Current, Iin<50mA)
Input voltage range 4.5V~18V
Efficiency to 96%
Selection Guide
Part
Number
SIP12
R-521.2xA
Inpu
Range
(V)
4.5 – 18
Nominal
Vout Output
Output Voltage Adjust Range Current
(V) (V) (A)
1.2
1.0 – 3.0
2
Efficiency
min.Vin 12V max.Vin
(%) (%) (%)
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 89www.DataSheet4U.com
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
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
5
94 93 92
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 efficien-
cies 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.
INNOLINE
DC/DC-Converter
R-5xxxPA
_DA Series
2, 3, 4, 5 AMP
SIP12
Vertical &
Horizontal
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INNOLINE
DC/DC-Converter
R-5xxxPA_DA
Series
Specifications (refer to the standard application circuit, Ta: 25°C)
Characteristics
Output Voltage Range
Output Current
Output Current Limit
Short Circuit Input Current
Short Circuit Protection
Output Voltage Accuracy
Line Voltage Regulation (Vin = min. to max. at full load)
Load Regulation (10 to 100% full load)
Ripple & Noise
Transient Response (see note 1)
Remote ON / OFF (see note 2)
(positive logic)
Remote Off Input Current
Switching Frequency
Quiescent Current
Operating Temperature Range
Storage Temperature Range
Internal Power Dissipation
MTBF (Nominal Vout, 100% load)
Conditions
All Series
R-52xxPA/DA
R-53xxPA/DA
R-54xxPA/DA
R-55xxPA/DA
R-52xxPA/DA
R-53xxPA/DA
R-54xxPA/DA
R-55xxPA/DA
All Series
Min.
0.8
0.2
0.3
0.4
0.5
At 100% Load All Series
R-52xxPA/DA
R-53xxPA/DA & R-54xxPA/DA & R-55xxPA/DA
R-52xxPA/DA
R-53xxPA/DA & R-54xxPA/DA & R-55xxPA/DA
R-52xxPA/DA
R-53xxPA/DA & R-54xxPA/DA & R-55xxPA/DA
50% Load Change
Vout Over / Undershoot
Open or High (Power ON)
Low (Power OFF)
Remote ON/OFF low level
4.5
270
Vin = min. to max. at 0% load
-40°C
-40°C
Io x Vo x (1-Efficiency)
Tamb. = +25°C
Tamb. = +85°C
Typ. Max.
6.0V
2.0A
3.0A
4.0A
5.0A
2.5 3.0A
3.75 4.25A
5.0 5.5A
6.0 6.5A
50mA
Continuous, automatic recovery
±1% ±2%
0.25 0.5%
0.5 1.0%
0.5 1.0%
1.0 2.0%
40mVp-p
80mVp-p
70mVp-p
120mVp-p
100µs
200µs
100mV
18V
0.8V
100µA
300 330kHz
20mA
+85°C
+125°C
1.4W
749 x 10³ hours
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
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INNOLINE
DC/DC-Converter
Standard Application Circuit
R-5xxxPA_DA
Series
11 R1
Vin
2, 3, 4
R-52XX
R-53XX
9, 10
(Adjust down)
Vout
1µF C1 1
TTL OFF (Optional)
R-54XX
R-55XX
ON Q1 5, 6, 7,8
12 C2 (Req'd)
100µF/10V
R2
(Adjust up)
or 220µF/10V
(see Note 1)
Com Com
Add a blocking diode to
Vout if current can flow
backwards into the out-
put, as this can damage
the converter..
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
Com
1 12
2 U1 11
3 10
Q1 C1 4 5 6 7 8 9
100µF/25V
(REQ`D)
C2-1
100µF/10V
(REQ`D)
C2-2
100µF/10V
(REQ`D)
45
3
2
1
67
U2
89
10
11
12
Vout
Com
must be connected
together
Component side
Solder side
1 12 U1
1 12 U2
Keep 2mm to 5mm distance
between both converters
12 C1
C2-1
12
C2-2
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27-March-2007
To Load
1
U1
1 U2
157



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INNOLINE
DC/DC-Converter
Output Current vs Input Voltage
R-5xxxPA_DA
Series
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
1
0.5
0 1.2 1.8 2.3 3.3 5.0
Output Voltage (V)
R-52xx / R-55xx
Output Voltage Line Regulation VS Vout
1
0.5
0 1.2 1.8 2.3 3.3 5.0
Output Voltage (V)
R-53xx / R-54xx
Intput Voltage Load Regulation VS Vin
2.0
1.5
1.0
0.5
05
Input Voltage (V)
10
15
1.2V
1.8V
2.5V
3.3V
5.0V
20
R-52xx / R-55xx
Intput Voltage Load Regulation VS Vin
2.0
1.5
1.0
0.5
05
Input Voltage (V)
10
15
1.2V
1.8V
2.5V
3.3V
5.0V
20
158
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R-521.2PA datasheet pdf
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R-521.2PA SIP12 Vertical & Horizontal R-521.2PA
RECOM
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