Recom Switching Regulator, Through Hole, 3.3V dc Output Voltage, 4.75 → 18V dc Input Voltage, 1.5A Output

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RS Stock No.:
672-7158
Mfr. Part No.:
R-78B3.3-1.5L
Brand:
Recom
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Brand

Recom

Output Voltage

3.3V dc

Output Current

1.5A

Input Voltage

4.75 → 18V dc

Mounting Type

Through Hole

Number of Outputs

1

Package

SIP

Power Rating

4.95W

Efficiency

88%

Ripple And Noise

15mV Pk-Pk

Maximum Temperature

+85°C

Minimum Temperature

-40°C

Series

R-78B-1.5

Line Regulation

±0.4%

Depth

8.5mm

Switching Frequency Range

340kHz

Maximum Input Current

7mA

Load Regulation

±0.6%

Standards Met

EN60950

Application

Automation, Industrial

Length

11.5mm

Width

17.5mm

Power Signal Conversion Type

DC-DC

Weight

4g

MTBF

5019 x 10^3h

Protection Features

Short Circuit Protection

COO (Country of Origin):
TW

R-78Bxx-1.5L Series


Non isolated
Medical safety approval EN-60601-1-2
No need for heat sinks
High efficiency
Wide input voltage range, up to 18V
Thermal shutdown and continuous short circuit protection
Low ripple and noise
Low profile
Pin-out compatible with LM78XX Linear regulators
”L” version with 90° pins

Note

De-rate above 71°C operating temperature.
MTBF to MIL-HDBK 217F.

Standards

EN-55022, EN-55024, EN-60601-1-2, EN-60950-1

RECOM Switching Regulator, Right-Angled Pins, 91% Maximum Efficiency - R-78B-1.5 Series - R-78B3.3-1.5L


Pin down voltage conversion in compact setups with this switching regulator from RECOM. Thanks to right-angled contacts, it lies flat while connected, helping you settle supply issues without using much space. By reaching up to 91% efficiency, the unit keeps a cool head during conversion so there's no need to hook up a heatsink. An input voltage range between 4.75 and 18V DC makes the regulator a sure fit for standard power supplies. It comes with integrated short-circuit protection, so you can trust it's more than a match for electrical faults.

• Epoxy resin potting and plastic case provide effective insulation to protect against electrical hazards
• Through-hole mounting for quick installation
• Power dissipation of just 0.65W to minimise energy loss
• Maximum line regulation rating of ±0.5%, ensuring a stable output voltage for a reliable power supply

Applications


• Remote-control devices
• Electric vehicle chargers
• Construction industry

Do I need to use shielded cables with this switching regulator?


No, this unit generates low ripple voltages up to 30mV, so there's no need to use shielded cables to protect against electrical noise.

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