Hi-Link HLK-IB05 Series 1W Isolated DC-DC Converter is an ultra-compact SIP-packaged power module with 5V DC input, providing fully isolated DC output across six voltage options from 3.3V to 24V. Designed for signal isolation, noise-sensitive sensor circuits, and multi-rail embedded systems requiring a safe isolated low-power DC supply. Specifications Input Voltage: 5VDC (±10%) Input Current (no load): ≤30mA (typical) Rated Output Power: 1W Output Voltage Options: 3.3V / 5V / 9V / 12V / 15V / 24V Output Current: Up to 303mA (3.3V) / 200mA (5V) / 111mA (9V) / 84mA (12V) / 67mA (15V) / 42mA (24V) Output Voltage Accuracy: ±2% (typical) Output Ripple: ≤50mVp-p (typical, at full load) Efficiency: ≥75% (typical at full load) Isolation Voltage: 1000VDC (Input to Output) Isolation Resistance: ≥1000MΩ at 500VDC Isolation Capacitance: ≤15pF Overload Protection: ≥150% rated current, auto-recovery Short Circuit Protection: Continuous, auto-recovery Operating Temperature: -40°C to +85°C Storage Temperature: -55°C to +125°C Package: SIP-7 (Single In-line Package), through-hole pins Dimensions: 19.5mm × 10mm × 6mm (approx.) Weight: Approx. 5g Certifications: CE, RoHS Compliant Applications Isolated analog/digital sensor power supply to prevent ground loops RS-485 / RS-232 / CAN bus interface isolated power rail Industrial field device signal isolation power ADC and DAC reference power isolation in precision measurement Medical device auxiliary low-power isolated supply Microcontroller GPIO expander isolated power domain Optocoupler driver isolated power supply IoT node floating power supply with galvanic isolation Multi-rail mixed-voltage embedded system power conversion DIY electronics requiring isolated 5V-to-9V/12V/24V conversion Package Includes 1× Hi-Link HLK-IB05 Series 1W Isolated DC-DC Module (one output voltage per order) Variant options: IB0503LS (3.3V/303mA), IB0505LS (5V/200mA), IB0509LS (9V/111mA), IB0512LS (12V/84mA), IB0515LS (15V/67mA), IB0524LS (24V/42mA) No additional accessories included Shipped in anti-static protective packaging Key Features Full galvanic isolation (1000VDC) between 5V input and output — eliminates ground noise coupling between power domains Ultra-compact SIP-7 package (19.5×10×6mm) — smallest footprint in Hi-Link's isolated DC-DC lineup 6 output voltage options (3.3V to 24V) from a single 5V USB or microcontroller supply Wide operating temperature range (-40°C to +85°C) suitable for industrial and outdoor environments Built-in short-circuit and overload protection with automatic recovery Low output ripple (≤50mVp-p) and high accuracy (±2%) — ideal for noise-sensitive analog circuits High isolation resistance (≥1000MΩ) and low capacitance (≤15pF) for effective high-frequency noise rejection Through-hole SIP pin mounting — easy PCB soldering with standard 2.54mm footprint compatibility Operates from a standard 5V supply (USB, regulator, or power bank) — no AC mains required CE and RoHS certified for international deployment in consumer and industrial electronics FAQ Q: What is the input voltage range for this module?A: The module accepts 5VDC input with ±10% tolerance (4.5V–5.5V). It is not compatible with 12V or 24V DC inputs — use a dedicated HLK-B series module for those input voltages. Q: Why would I need an isolated DC-DC converter instead of a regular regulator?A: Isolation prevents ground loops and eliminates electrical noise coupling between circuits. It is essential for RS-485/CAN interfaces, precision ADC power, sensor isolation, and any application where input and output must not share a common ground. Q: Can I use this module to power an Arduino from a 5V USB supply and get 12V output?A: Yes, the IB0512LS variant outputs 12V at up to 84mA from a 5V input — suitable for low-current 12V loads like relays, buzzers, or small sensors. Q: Is the output regulated?A: Yes. The output voltage is regulated with ±2% accuracy. Ripple is ≤50mVp-p at full load — suitable for most microcontroller and sensor applications. Q: What is the no-load input current?A: Approximately ≤30mA at no load. This is important to consider for battery-powered applications. Q: How does this differ from the Hi-Link AC-DC PM/5M series?A: The IB05 series is a DC-DC module requiring a 5V DC input — it cannot connect directly to AC mains. The PM/5M series accepts AC mains (85–264VAC) and converts to DC. Use IB05 when you already have a 5V supply and need an isolated or different voltage rail. Q: Can I use this module to isolate an RS-485 transceiver?A: Yes. The 1000VDC isolation and low capacitance (≤15pF) make it well-suited for isolated RS-485/RS-232/CAN bus power supply applications alongside an isolated signal transceiver. Q: Is there a 3.3V output variant available?A: Yes. The IB0503LS variant outputs 3.3V at up to 303mA — the highest output current among all six variants. Q: Can I connect the output of two modules in series for higher voltage?A: Yes. Because each module is fully isolated, outputs can be connected in series to achieve higher composite voltages, provided the total load current does not exceed each module's rated output current. Q: What PCB footprint does the SIP-7 package use?A: The SIP-7 package uses 7 through-hole pins on a 2.54mm pitch. Refer to the Hi-Link IB05 series datasheet for the exact footprint dimensions before designing your PCB layout.
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