RECOM R-78AA33-05SMD Datasheet

INNOLINE

DC/DC-Converter

with 3 year Warranty

R-78AA-0.5

www.recom-international.com I-7

EN-60950-1 Certified

REV: 0/2014

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

0.5 AMP
SMD
Single Output

●

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

● UL94V-0 Package Material

● Very Low Shutdown Current

● See Innoline Application Notes for use as an

inverter (alternative to LM79xx Linear)

Features

Selection Guide

Part Input Output Adjust Output Efficiency
Number Range Voltage Range Current Min. Vin Max. Vin
SMD (V) (V) (V) (A) (%) (%)

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

Output Power (%)

120

100

20

60

100750

-40

Operating Temperature (°C)

0

80

5025

71

Safe Operating Area

85

40

Derating-Graph

(Ambient Temperature)

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.

Description

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

Standard Application Circuit

R-78AAxx-0.5SMD

-Vout

+Vout

+Vin

-Vin

C1

10µF
(Optional)

100µF
(Optional)

C2

1,2

10

3,7,8,9

6

4,5

R1

R2Off/On

>1ms

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

RoHS

2011/65/EU

6/6

I-8 www.recom-power.comREV:0/2014

R.78AA-0.5

Characteristics Conditions Min. Typ. Max.

Input Voltage Range See Table 4.75V 32V 34V abs. max.

Output Voltage Range See Table 1.5V 15V

Output Current (see Note) All Series 0mA* 500mA

Output Current Limit All Series 2000mA

Short Circuit Input Current Vin = 24V 60mA 100mA

Internal Power Dissipation 0.4W

Short Circuit Protection Continuous, automatic recovery

Output Voltage Accuracy 100% Load ±2% ±3%

Adjustable Voltage Range See Table 1 ±50%
Line Voltage Regulation (Vin = min. to max. at full load) 1.5V to 6.5V 0.2% 0.4%

9V to 15V 0.1% 0.2%

Load Regulation (10 to 100% full load) 1.5V to 6.5V 0.7% 1.0%

9V to 15V 0.25% 0.4%
Dynamic Load Stability 100% <-> 50% load ±75V ±100mV
with 100µF Output capacitor 100% <-> 10% load ±100mV
Ripple & Noise (without Output Capacitor) 1.5V to 6.5V 20mVp-p 30mVp-p

9V to 15.5V 30mVp-p 40mVp-p

Temperature Coefficient -40°C ~ +85°C ambient 0.015%/°C
Max capacitance Load with normal start-up time, no external components 220µF

with <1 second start up time + diode protection circuit 6800µF

Switching Frequency 280kHz 330kHz 380kHz

Quiescent Current Vin = min. to max. at 0% load 5mA 7mA
ON/OFF Remote Control Pin Drive Current ON: Open or 1.6V<Vr<5V

OFF: GND or 0<Vr<1.6V Ir=1.8µA typ

Converter Input Current (valid for Vr < 1.6V) 20µA 30µA

Remote On/Off Threshold Voltage (Vr rising) 2.4V 2.6V 2.8V

Remote On/Off Voltage Hysteresis 250mV

Operating Temperature Range (with derating) -40°C +85°C

Switch On/Off Time (using Remote On/Off Control) 50ms

Operating Case Temperature +100°C

Storage Temperature Range -55°C +125°C

Case Thermal Impendance 70°C / W

Thermal Shutdown Internal IC junction +160°C

Case Material Non-Conductive Black Plastic

Potting Material Epoxy (UL94V-0)
EMC Conducted Emissions (with filter) EN55022 Class B

Radiated Emissions (with filter) EN55022 Class B

ESD EN61000-4-2 Class A

Radiated Immunity EN61000-4-3 Class A

Fast Transient EN61000-4-4 Class A

Conducted Immunity EN61000-4-6 Class A

Magnetic Field Immunity EN61000-4-8 Class A

Safety Certification Report: SPCLVD 1301026-1 EN 60950-1:2006 + A12:2011

Package Weight 2.7g
Packing Quantity 33pcs per Tube

250pcs per Reel

MTBF (+25°C) using MIL-HDBK 217F 21098~29253 x 10³ hours

(+71°C) 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

R-78AAxx-0.5 SMD
Series

Specifications

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

INNOLINE

DC/DC-Converter

}

Detailed Information see
Application Notes chapter "MTBF"

R-78AA-0.5

www.recom-international.com I-9REV: 0/2014

INNOLINE

DC/DC-Converter

Characteristics

Efficiency (%)

100

20

10

Efficiency Vs

Vin (Full Load)

Vo=1.8V

Vo=3.3V

Vo=5V

Vo=9V

Vo=12V,15 V

50

Vin (V)

30

34

Vo=1.5V

Efficiency

Efficiency (%)

100

0.1

Efficiency Vs

Load ( Vin=Max )

Vo=1.8V

Vo=3.3V

Vo=5V

Vo=12V

50

Output Current ( A )

0.2

0.3

0.4

0.5

0.6

Vo=15V

Vo=1.5V

Efficiency (%)

100

0.1

Efficiency Vs

Load ( Vin=Min )

Vo=1.8V

Vo=3.3V

Vo=5V

Vo=12,15V

50

Output Current ( A )

0.2

0.3

0.4

0.5

0.6

Vo=1.5V

Ripple (mV)

50

20

10

Ripple Vs

Vin (full load)

Vo=1.8V

Vo=3.3V

Vo=5V

Vo=9V

Vo=12V

25

30

Vin (V)

34

Vo=15V

Vo=1.5V

Ripple

Ripple (mV)

50

0.1

Ripple Vs

Load ( Vin=24V )

Vo=1.5V

Vo=3.3V

Vo=5V

Vo=12V

25

Output Current ( A )

0.2

0.3

0.4

0.5

0.6

Vo=1.8V

Vo=9V

Vo=15V

Ripple (mV)

25

0.1

Ripple Vs

Load ( Vin=Min )

Vo=3.3, 9V
Vo=5V

Vo=12V

10

Output Current ( A )

0.2

0.3

0.4

0.5

0.6

Vo=1.8V

Vo=1.5V

5

15

20

Vo=15V

R-78AAxx-0.5 SMD
Series

I-10 www.recom-power.comREV: 0/2014

R-78AA-0.5

Application Examples

INNOLINE

DC/DC-Converter

+Vin

0V

R-78AA12-0.5SMD

C1

Reprogrammable
Flash Memory

24kW

"Program" = 0V, Pgm Pin = +5V

Flash Memory Program Voltage Switcher

Pgm

Program

220kW

"Program" = high, Pgm Pin = +12,6V

0V

+Vin

-Vin

R-78AAxx-0.5SMD

-Vout

+Vout

C1

C2

DC/DC Converter ( 1:1 )

- Improved loading / line regulation

- Wide Input Voltage Range
C1 , C2 : optional

- Point-of-Load Architecture

- High isolation voltage

On/Off

- Remote On/Off Control

R-78AAxx-0.5 SMD
Series

Optional Protection Circuit

R-78A(A)xx

-xxxSMD

-Vout

+Vout

+Vin

-Vin

Diode

Trim output voltage
up 1 diode drop

CTRL

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).

-Vout

+Vout

+Vin

-Vin

R-78A(A)xx

-xxxSMD

CTRL

Optional Protection 1:

Optional Protection 2:

R-78xx-xx

-Vout

+Vout

+Vin

-Vin

6800µF

Application example:
Driving a high capacitive load

R-78AA-0.5

www.recom-international.com I-11REV: 0/2014

12.35

Bottom View

0.55

Top View

15.30

8.80

15.00

2.54x4

9.24

10 7

245

11.00

9.40

9.60

RECOM

R-78Axx-0.5SMD

xxxx

1

2.54

13.00

1.80

10 7

2415

1.30

1.20

3

68

9

3

6

89

Package Style and Pinning (mm)

SMD 10Pin Package

Pin Connections

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

Table 1: Adjustment Resistor Values

INNOLINE

DC/DC-Converter

R-78AAxx-0.5 SMD
Series

Recommended Footprint Details

R1 R2 R3 Vref(V)

1.8V 10KΩ 21KΩ 5.6KΩ 1.23

2.5V 22KΩ 21KΩ 5.6KΩ 1.23

3.3V 16.9KΩ 10KΩ 5.6KΩ 1.23

5.0V 30.9KΩ 10KΩ 10KΩ 1.23

6.5V 43KΩ 10KΩ 10KΩ 1.23
9V 63.4KΩ 10KΩ 22.1KΩ 1.23
12V 88.7KΩ 10KΩ 22.1KΩ 1.23

Rdown

Rup

Vadj

+V

o

-Vo

R3

R1

R2

+V

in

-Vin

Controlled IC

Vref

R2(R1+R3) x (Vref - Vo) + Vref x (R1 + R3)

Trim Down R

down =

R

2Vo - Vref (R1 + R2)

R

2R3 (Vref - Vo) + Vref R1 (R2 + R3)

Trim up R

up =

R

2 (Vo - Vref) - Vref R1

The product information and specifications are subject to change without prior notice. All products are designed for non-safety critical commercial and industrial applications.

The Buyer agrees to implement safeguards that anticipate the consequences of any failures that might cause harm, loss of life and/or damage property.