R-78AA-1.0 Datasheet, PDF (1/4 Pages) Recom International Power – 1.0 AMP SMD Single Output

Features
● Replacement for R-78Axx-1.0SMD series
● RoHS 6/6 Conform (100% Lead Free)
● High Reflow Temperature SMD Package
● Adjustable Output Voltage
● Short circuit protection, Thermal shutdown
● Remote On/Off Control
● Very Low Shutdown Current
Description
The R-78AAxx-1.0SMD series are manufactured without lead and meet the requirements for RoHS 6/6 as well as
the increased reflow soldering temperatures associated with vapor phase soldering, making these high efficiency
switching regulators ideally suited to modern pick-and-place mass production. The efficiency of up to 94% means
that very little energy is wasted as heat. The additional features of remote on/off control and adjustable output volta-
ges will find many uses in the battery-powered, industrial, medical and automotive markets.
Selection Guide
Part
Number
SMD
Input
Range
(V)
R-78AA1.5-1.0SMD* 4.75 – 18
R-78AA1.8-1.0SMD* 4.75 – 18
R-78AA2.5-1.0SMD* 4.75 – 18
R-78AA3.3-1.0SMD* 4.75 – 18
R-78AA5.0-1.0SMD* 6.5 – 18
Output
Voltage
(V)
1.5
1.8
2.5
3.3
5.0
Adjust
Range
(V)
fixed
1.5~3.0
1.5~3.0
3.0~5.5
3.0~5.5
Output
Current
(A)
1.0
1.0
1.0
1.0
1.0
Efficiency
Min. Vin Max. Vin
(%) (%)
77
73
82
76
87
81
90
84
94
89
* add suffix -R for tape&reel packing e.g. R-78AA5.0-1.0-R. For more details see Application Notes.
Specifications ( typical at 25°C, 10% minimum load, unless otherwise specified )
Characteristics
Input Voltage Range
Output Voltage Range
Conditions
See Table
See Table
Min.
4.75V
1.5V
Typ.
Max.
18.0V
5.5V
Output Current
Short Circuit Input Current
Internal Power Dissipation
Short Circuit Protection
All Series
Vin = 12V
0mA*
1000mA
120mA
0.4W
Continuous, automatic recovery
Output Voltage Accuracy
100% Load
Adjustable Voltage Range
See Table 1
Line Voltage Regulation (Vin = min to max at full load)
Load Regulation (10% to 100% full load)
Dynamic Load Stability
100%<>50% load, 25mA/µs
±2%
±3%
±50%
0.2% 0.4%
0.7% 1.0%
±85mV ±100mV
Ripple & Noise (20MHz BW)
20mVp-p 30mVp-p
Temperature Coefficient
-40°C~+85°C ambient
0.015%/°C
Max capacitance Load with normal start-up time, no external components
470µF
with <1 second start up time + diode protection circuit
6800µF
Switching Frequency
335kHz
Quiescent Current
Vin = min. to max. at 0% load
ON/OFF Remote Control Pin Drive Current ON: Open or 1.6V<Vr<5V
OFF: GND or 0<Vr<1.6V
Converter Input Current (valid for Vr < 1.6V)
385kHz 435kHz
5mA
7mA
Ir=1.8µA typ
20µA 35µA
Remote On/Off Threshold Voltage (Vr rising)
Remote On/Off Voltage Hysteresis
Operating Temperature Range
Switch On/Off Time
2.4V
-40°C
(using Remote On/Off Control)
2.6V
250mV
2.8V
+85°C
50ms
Operating Case Temperature
Storage Temperature Range
Case Thermal Impedance
-55°C
+100°C
+125°C
70°C / W
continued on next page
www.recom-power.com
REV: 1/2015
INNOLINE
DC/DC-Converter
with 3 year Warranty
1.0 AMP
SMD
Single Output
RoHS
2011/65/EU
6/6
IEC/EN-60950-1 Certified
R-78AA-1.0
Derating-Graph
(Ambient Temperature)
120
100
80
60
40
Safe Operating Area
30
20
0
-40 0
25 50 7585 100
60
Operating Temperature (°C)
Refer to Application Notes
I-15