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Recom Power
 
Description:
CONV DC/DC 0.5A 15-32VIN 12V

R-78AA12-0.5SMD Datasheet (pdf)





Features










Replacement for R-78Axx-0.5SMD series
RoHS 6/6 Conform (100% Lead Free)
Efficiency up to 97%,Non isolated,
no need for heatsinks
High Reflow Temperature SMD Package
Adjustable Output Voltage
Wide input range.(4.75V ~ 32V)
Short circuit protection, Thermal shutdown
Remote On/Off Control

INNOLINE
DC/DC-Converter
with 3 year Warranty

UL94V-0 Package Material

0.5 AMP
SMD
Single Output

Very Low Shutdown Current
See Innoline Application Notes for use as an
inverter (alternative to LM79xx Linear)

Description
The R-78AAxx-0.5SMD series are manufactured without lead and meet the requirements for RoHS 6/6 as well as the
increased reflow soldering temperatures associated with vapour phase soldering, making these high efficiency
switching regulators ideally suited to modern pick-and-place mass production. The efficiency of up to 97% means that
very little energy is wasted as heat. The additional features of remote on/off control and adjustable output voltages will
find many uses in the battery-powered, industrial, medical and automotive markets.

Selection Guide
Part
Number
SMD

Input
Range
(V)

Output
Voltage
(V)

Adjust
Range
(V)

Output
Current
(A)

Efficiency
Min. Vin Max. Vin
(%)
(%)

R-78AA1.5-0.5SMD

4.75 – 30

1.5

fixed

0.5

73

63

R-78AA1.8-0.5SMD

4.75 – 32

1.8

1.5~3.0

0.5

82

71

R-78AA2.5-0.5SMD

4.75 – 32

2.5

1.5~3.0

0.5

87

77

R-78AA3.3-0.5SMD

4.75 – 32

3.3

3.0~5.5

0.5

91

81

R-78AA5.0-0.5SMD

6.5 – 32

5.0

3.0~8.0

0.5

94

86

R-78AA6.5-0.5SMD

8.0 – 32

6.5

3.3~11.0

0.5

95

88

R-78AA9.0-0.5SMD

11 – 32

9.0

4.5~12.6

0.5

96

92

R-78AA12-0.5SMD

15 – 32

12

4.5~12.6

0.5

97

94

R-78AA15-0.5SMD

18 – 32

15

fixed

0.5

97

95

RoHS

2011/65/EU
6/6

EN-60950-1 Certified

R-78AA-0.5

Note 1:1.5V Output can be unstable with Vin>30VDC

Derating-Graph

* add suffix -R for tape&reel packing e.g. R-78AA5.0-0.5-R. For more details see Application Notes.

(Ambient Temperature)

Standard Application Circuit
1,2

R-78AAxx-0.5SMD

>1ms

C1
Off/On

10µF
(Optional)

10 3,7,8,9

6

+Vout

4,5

R1
R2

C2
100µF
(Optional)

Output Power (%)

+Vin

120
100
80
60
40
20
0

Safe Operating Area

-40

0

25

50

Operating Temperature (°C)

-Vin

85
75
100
71

-Vout

To protect the converter from high inrush currents, use soft start Vin and C1=10µF
Output capacitor C2 recommended if load is very dynamic
www.recom-international.com

REV: 1/2013

I-7

R-78AAxx-0.5 SMD
Series

INNOLINE
DC/DC-Converter

Specifications ( typical at 25°C, 10% minimum load, unless otherwise specified )
Characteristics

Conditions

Min.

Typ.

Max.

Input Voltage Range

See Table

4.75V

32V

34V abs. max.

Output Voltage Range

See Table

1.5V

Output Current (see Note)

All Series

0mA*

Output Current Limit

All Series

Short Circuit Input Current

Vin = 24V

15V
500mA
2000mA
60mA

100mA

Internal Power Dissipation

0.4W

Short Circuit Protection

Continuous, automatic recovery

Output Voltage Accuracy

100% Load

Adjustable Voltage Range
Line Voltage Regulation (Vin = min. to max. at full load)

See Table 1
1.5V to 6.5V
9V to 15V
1.5V to 6.5V
9V to 15V
100% <-> 50% load
100% <-> 10% load
1.5V to 6.5V
9V to 15.5V

Load Regulation (10 to 100% full load)
Dynamic Load Stability
with 100µF Output capacitor
Ripple & Noise (without Output Capacitor)
Temperature Coefficient
Max capacitance Load

±2%

R.78AA-0.5

280kHz
Vin = min. to max. at 0% load
ON: Open or 1.6VOFF: GND or 02.4V

380kHz
7mA

30µA

2.6V

2.8V

250mV

Operating Temperature Range (with derating)

-40°C

+85°C

(using Remote On/Off Control)

50ms

Operating Case Temperature

+100°C

Storage Temperature Range

-55°C

Case Thermal Impendance

+125°C
70°C / W

Internal IC junction

+160°C

Case Material

Non-Conductive Black Plastic

Potting Material
EMC

Conducted Emissions (with filter)
Radiated Emissions (with filter)
ESD
Radiated Immunity
Fast Transient
Conducted Immunity
Magnetic Field Immunity

Safety Certification

Report: SPCLVD 1301026-1

Package Weight
Packing Quantity

(+71°C)

330kHz

Ir=1.8µA typ

Remote On/Off Voltage Hysteresis

MTBF (+25°C)

0.015%/°C
220µF
6800µF

20µA

Remote On/Off Threshold Voltage (Vr rising)

Thermal Shutdown

30mVp-p
40mVp-p

5mA

Converter Input Current (valid for Vr < 1.6V)

Switch On/Off Time

±50%
0.4%
0.2%
1.0%
0.4%
±100mV

0.2%
0.1%
0.7%
0.25%
±75V
±100mV
20mVp-p
30mVp-p

-40°C ~ +85°C ambient
with normal start-up time, no external components
with <1 second start up time + diode protection circuit

Switching Frequency
Quiescent Current
ON/OFF Remote Control Pin Drive Current

±3%

}

EN55022
EN55022
EN61000-4-2
EN61000-4-3
EN61000-4-4
EN61000-4-6
EN61000-4-8

Epoxy (UL94V-0)
Class B
Class B
Class A
Class A
Class A
Class A
Class A
EN 60950-1:2006 + A12:2011
2.7g
33pcs per Tube
250pcs per Reel

Detailed Information see
Application Notes chapter "MTBF"

using MIL-HDBK 217F

21098~29253 x 10³ hours
4214-7365 x 10³ hours

*Note: Operation under no load will not damage these devices, however they may not meet all specifications. A minimum load of 6mA is recommended
I-8

REV: 1/2013

www.recom-electronic.com

R-78AAxx-0.5 SMD
Series

INNOLINE
DC/DC-Converter
Characteristics

Ripple

Efficiency
100

Vo=12V,15 V
Vo=9V
Vo=5V
Vo=3.3V
Vo=1.8V
Vo=1.5V

50

50

Vo=15V
Vo=12V
Vo=9V
Vo=5V
Vo=3.3V

Ripple (mV)

Efficiency (%)

25

10

Vin (V)

20

Vo=1.8V
Vo=1.5V

30 34

10

Vin (V)

Efficiency Vs Vin (Full Load)

30 34

20

Ripple Vs Vin (full load)

100

Vo=15V
Vo=12V
Vo=5V
Vo=3.3V

50

Vo=1.8V
Vo=1.5V

Vo=12V
Vo=15V
Vo=9V
Vo=5V
Vo=3.3V
Vo=1.8V
Vo=1.5V

Efficiency (%)

Ripple (mV)

25

0.1

0.2

0.3

0.4

0.5

0.6

0.1

Output Current ( A )

0.2

0.3

0.4

0.5

0.6

Output Current ( A )

Efficiency Vs Load ( Vin=Max )

Ripple Vs Load ( Vin=24V )

100

25

Vo=12,15V
Vo=5V
Vo=3.3V
Vo=1.8V
Vo=1.5V

20

Ripple (mV)

Efficiency (%)

0.3

0.4

0.5

0.6

Vo=1.8V
Vo=3.3, 9V
Vo=5V
Vo=1.5V

5

0.1

Output Current ( A )

0.2

0.3

0.4

0.5

0.6

Output Current ( A )

Efficiency Vs Load ( Vin=Min )

www.recom-international.com

Vo=12V

10

0.2

Vo=15V

15

50

0.1

R-78AA-0.5

50

Ripple Vs Load ( Vin=Min )

REV: 1/2013

I-9

R-78AAxx-0.5 SMD
Series

INNOLINE
DC/DC-Converter
Application Examples

Flash Memory Program Voltage Switcher
R-78AA12-0.5SMD

+Vin

220kW

Pgm
Reprogrammable
Flash Memory

C1

0V

0V
Program
24kW
"Program" = 0V, Pgm Pin = +5V
"Program" = high, Pgm Pin = +12,6V

DC/DC Converter ( 1:1 )
+Vin

R-78AAxx-0.5SMD

C1

-Vin

R-78AA-0.5

+Vout

C2
- High isolation voltage
- Improved loading / line regulation
- Wide Input Voltage Range
- Point-of-Load Architecture
- Remote On/Off Control

On/Off
-Vout
C1 , C2 : optional

Optional Protection Circuit
Optional Protection 2:

Optional Protection 1:
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.
The diode can either be fitted
across the device if the
source is low impedance or
fitted in series with the output
(recommended).

Application example:
Driving a high capacitive load

+Vin

R-78A(A)xx
-xxxSMD

+Vout

+Vin

R-78A(A)xx
-xxxSMD

+Vout

Diode
CTRL

CTRL

-Vin

-Vout

+Vin

R-78xx-xx

Trim output voltage
up 1 diode drop

-Vin

-Vout

+Vout

6800µF
-Vin

I-10

-Vout

REV: 1/2013

www.recom-electronic.com

R-78AAxx-0.5 SMD
Series

INNOLINE
DC/DC-Converter
Table 1: Adjustment Resistor Values

0.5Adc

R-78AA1.8

R-78AA2.5

R-78AA3.3

R-78AA5.0

R-78AA6.5

R-78AA9.0

R-78AA12

-0.5SMD

-0.5SMD

-0.5SMD

-0.5SMD

-0.5SMD

-0.5SMD

-0.5SMD

1.8Vdc

2.5Vdc

3.3Vdc

5.0Vdc

6.5Vdc

9.0Vdc

12.0Vdc

Vout (nom.)
Vout (adj.)

R1

1.5 (V)

R2

R1

3KΩ

R2

R1

R2

44.2KΩ

88.4KΩ

R1

R2

R1

R2

R1

R2

R1

R2

200Ω

1.8 (V)

12KΩ

2.5 (V)

11.8KΩ

3.0 (V)

4.64KΩ

17KΩ

3.3 (V)

27KΩ

3.6 (V)

60.4KΩ

6.7KΩ

42KΩ

14KΩ

3.9 (V)

28KΩ

58KΩ

23KΩ

4.5 (V)

11.3KΩ

180KΩ

49KΩ

26KΩ

17KΩ

4.9 (V)

7.15KΩ

850KΩ

77KΩ

36KΩ

24KΩ

5.0 (V)

6.34KΩ

86KΩ

39KΩ

26KΩ

5.1 (V)

5.9KΩ

231KΩ

97KΩ

42KΩ

28KΩ

5.5 (V)

3.9KΩ

56.2KΩ

160KΩ

56KΩ

36KΩ

112KΩ

63KΩ

400KΩ

125KΩ

6.5 (V)

14KΩ

8.0 (V)

2.32KΩ

24.6KΩ

9.0 (V)

10.7KΩ

10 (V)

4.75KΩ

54.9KΩ

345KΩ

200KΩ

11 (V)

1.65KΩ

16.5KΩ

740KΩ

3.6KΩ

12.6 (V)



180KΩ

Package Style and Pinning (mm)
SMD 10Pin Package

8.80

3rd angle
projection

9.60

15.30
15.00

10 9 8 7 6

9.40

RECOM

9.24

R-78Axx-0.5SMD

xxxx

1 2 3 4 5

2.54x4
11.00
12.35

Pin Connections
Recommended Footprint Details
0.55
13.00

Bottom View

2.54

1.30

www.recom-international.com

10 9 8 7 6

1.20

Top View

1 2 3 4 5
1.80

REV: 1/2013

Pin #
1,2
+Vin
3,7,8,9
GND
4,5
+Vout
6
V adj
10
Remote On/Off
xx.x ±0.5mm
xx.xx ±0.25mm

I-11

R-78AA-0.5

12 (V)

Alertnative

Relate