1.0 AMP

SMD

Single Output

INNOLINE

DC/DC-Converter

R-78Axx-

1.0SMD

Series

no need for heatsinks

Features

Selection Guide

Part

Input

Output

Adjust

Output

Efficiency

Number

Range (1)

Voltage

Range

Current

Min. Vin Max. Vin

SMD

(V)

(V)

(V)

(A)

(%)

(%)

R-78A1.8-1.0SMD

4.75 – 18

1.8

1.5~3.3

1.0

82

71

R-78A2.5-1.0SMD

4.75 – 18

2.5

1.5~4.5

1.0

87

77

R-78A3.3-1.0SMD

4.75 – 18

3.3

1.8~5.5

1.0

91

81

R-78A5.0-1.0SMD

6.5 – 18

5.0

2.5~5.5

1.0

94

86

120

100

20

60

100

75

0

-40

Operating Temperature (°C)

0

80

50

25

60

Safe Operating Area

85

40

30

Characteristics

Conditions

Min.

Typ.

Max.

Input Voltage Range (Note 1)

See Table

4.75

18.0V

Output Voltage Range

See Table

1.5

5.5V

Output Current

All Series

0

1000mA

Output Current Limit

All Series

3000mA

Short Circuit Input Current

All Series

30mA

Internal Power Dissipation

0.4W

Short Circuit Protection

Continuous, automatic recovery

Output Voltage Accuracy (At 100% Load)

All Series

±2

±3%

Adjustable Voltage Range

See Table 1

±50%

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

0.2

0.4%

Load Regulation (10% to 100% full load)

0.7

1.0%

Dynamic Load Stability

100%<>50% load

±85mV ±100mV

Ripple & Noise (20MHz BW)

20mVp-p 30mVp-p

Temperature Coefficient

-40°C~+85°C ambient

0.015%/°C

Max capacitance Load

220µF

Switching Frequency

280

350

430kHz

Quiescent Current

Vin = min. to max. at 0% load

5

7mA

Shutdown Current

20

35µA

Remote On/Off Threshold Voltage

0.8

1.2

1.6V

ON/OFF Remote Control

ON: Open or 1.6<Vr<5V, OFF: GND or 0<Vr<1.6V

Ir=1.8uA typ.

Operating Temperature Range

-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

Package Weight

2.7g

MTBF (+25°C)

using MIL-HDBK 217F

13338 x 10³ hours

.

(+71°C)

using MIL-HDBK 217F

3880 x 10³ hours

Derating-Graph

(Ambient Temperature)

Application Notes chapter "MTBF"

The R-78Axx-1.0SMD series high efficiency switching regulators are ideally suited to pick-and-place mass

production. The efficiency of up to 94% means that very little energy is wasted as heat. remote on/off control

and adjustable output voltage are useful additional features of this versatile SMD converter series.

Description

04-April-2007

151

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