Datasheet

www.recom-international.com 155March-2006
1.0 AMP
SIP3
Single Output
INNOLINE
DC/DC-Converter
R-78xx-1.0
Series
● Efficiency up to 94%, non-isolated,
no need for heatsinks!
● Pin-out compatible with LM78XX Linears
● Very low profile (L*W*H=11.5*7.5*10.2mm)
● Wide input range (4.75V ~ 18V)
● Short circuit protection, thermal shutdown
● Non standard outputs available as specials
between 1.5V ~5.5V
● Low ripple and noise
Features
Selection Guide
Part Input Output Output Efficiency
Number Range Voltage Current Min. Vin Max. Vin
SIP3 (V) (V) (A) (%) (%)
R-781.8-1.0 4.75 – 18 1.8 1.0 82 76
R-782.5-1.0 4.75 – 18 2.5 1.0 87 81
R-783.3-1.0 4.75 – 18 3.3 1.0 90 84
R-785.0-1.0 6.5 – 18 5.0 1.0 94 89
Output Power (%)
120
100
20
60
100750
-40
Operating Temperature (°C)
0
80
5025
60
Safe Operating Area
85
40
30
Derating-Graph
(Ambient Temperature)
Characteristics Conditions Min. Typ. Max.
Input Voltage Range All Series 4.75 18V
Output Voltage Range All Series 1.5 5.5V
Output Current All Series 100 1000mA
Output Current Limit All Series 3000mA
Short Circuit Input Current All Series 10 30mA
Internal Power Dissipation 0.4W
Short Circuit Protection Continuous, automatic recovery
Output Voltage Accuracy (At 100% Load) All Series ±2 ±3%
Line Regulation (100% Load, Vin max.) All Series 0.2 0.4%
Load Regulation (10 to 100% full load) All Series 0.4 0.6%
Dynamic Load Stability 100% <-> 50% load ±85mV ±100mV
Ripple & Noise (20Mhz BW) All Series 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
Operating Temperature Range -40°C +85°C
Operating Case Temperature (with derating) +100°C
Storage Temperature Range -55°C +125°C
Case Thermal Impendance 70°C/W
Thermal Shutdown Internal IC junction +160°C
MTBF (+25°C) using MIL-HDBK 217F 13338 x 10³ hours
. (+71°C) using MIL-HDBK 217F 3880 x 10³ hours
Specifications (refer to the standard application circuit, Ta: 25°C)
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Detailed Information see
Application Notes chapter "MTBF"
The R-78xx-1.0 series high efficiency switching regulators are ideally suited to replace 1 Amp 78xx linear
regulators and are pin compatible. The efficiency of up to 97% means that very little energy is wasted as
heat so there is no need for any heat sinks with their additional space and mounting costs. Low ripple and
noise figures and a short circuit input current of typically only 10mA round off the specifications of this ver-
satile converter series.
Description