Introduction

This ultra-thin isolated power converter features enhanced isolation of 1500VDC and is designed for space-constrained applications such as wearable devices, IoT nodes, drone controllers, and robotic surgical tools.

Advantage

Intelligent Protection
Input undervoltage lockout at 13 V and output short-circuit auto-recovery ensure safe and reliable operation.

Precision Voltage Control
Maintains ±1% regulation from -55°C to 105°C, with Sense+/- pins allowing ±2% load adjustment at 1 m.

Wide Logic Compatibility
ON/OFF pin supports 3.5 V–25 V signals for flexible integration across platforms.

Thermal Resilience
Operates stably up to 105°C baseplate temperature and endures 500 thermal cycles (-55°C ⇄ 125°C).

High Isolation & Reliability
1500 VDC reinforced isolation per IEC 62368-1, ISO 7637-2 compliant, with 500 hr endurance at 95% RH / 60°C.

Robust Vibration Performance
Ensures minimal output deviation (0.1%) under 50 g vibration, verified by SGS testing.

Specification

Product series	Model number	Input range Vdc	Output voltage Vdc	Output current @Full Load A	Efficiency %	Ripple and noise mV p-p	Maximum capacitor load uF
G	LM28S5G15-NNMG	16-40	5.0	3	82	15	2000
	LM28S12G15-NNMG	16-40	12	1.25	85	20	470
	LM28S15G15-NNMG	16-40	15	1	81.5	50	1000
	LM28S5G15-NNMG	16-40	5.0	3	82	15	2000
I	LM28S5I10-NNMG	16-40	5.0	2	86	50	680
	LM28S12I30-NNM	16-40	12	2.5	89	50	1000
	LM28S28I50-NNM	16-40	28	1.8	90	150	1000
	LM28S24I50-NNM	16-40	24	2.1	90	150	1000

Parameter	Min	Typical	Max	Unit	Conditions
Input voltage range	16	28	40	Vdc	All models
Isolation voltage	-	-	1500	Vdc	Input-output/case
Switching frequency	-	330(G series);300(I series)	-	kHz	Nominal input
Operating temperature	-55	-	105	°C	H.Ex. external temperature
MTBF	2	-	-	Mhrs	MIL-HDBK-217F
Weight	-	10(G series);20(I series)	-	g	-

Design Details

Mechanical Dimensions:32.0(L) × 19.3(W) × 7.0(H) mm (industry-standard G Series)

product-600-280

Mechanical Dimensions:40.0(L) × 26.0(W) × 8.0(H) mm (industry-standard I-Series)

product-600-276

Pin Configuration:

G Series
Pin	Designation	Function
1/2	Vin+	Positive input voltage
10	NC	No Connection
11/12	Vout-	Negative output voltage
13/14	Vout+	Positive output voltage
15	NC	No Connection
16	Trim	Output voltage adjustment
20	ON/OFF	Remote control terminal
23/24	Vin-	Negative input voltage
I Series
Pin	Designation	Function
1	Vin+	Positive input voltage
2	NC	NO Pins
3	ON/OFF	Remote control terminal
4	Vin-	Negative input voltage
5	Vout-	Negative output voltage
6	NC	NO Pins
7	Trim	Output voltage adjustment
8	NC	NO Pins
9	Vout+	Positive output voltage

Thermal Innovation: Aluminum alloy baseplate with 10°C/W thermal resistance (natural convection)

Mounting: Standard through-hole soldering with 1.5mm pin diameter

application

Wearable Health Monitors

Provides stable power for compact medical devices, ensuring accurate sensing and continuous operation.

Drone Flight Controllers

Supplies reliable voltage to UAV control systems for safe and precise flight performance.

Automotive ADAS Modules

Power advanced driver-assistance systems, enabling real-time sensing and vehicle safety features.

Robotic Surgical Tools

Delivers consistent and precise power for surgical robots, supporting accurate and safe medical operations.

What We Offer

Rapid Customization: 48-hour turnaround for special voltages
Free Thermal Modeling: CFD simulations for compact designs
3-Year Warranty: Industrial-grade extended coverage
Proto Kits: Includes evaluation board + GUI software
EMC Consulting: Pre-compliance testing services
Lifecycle Guarantee: 10-year continuous supply

Why Partner with Us

Strong R&D Capability
1800+ employees with 70% in R&D drive continuous innovation in radar, AI, and electronic technologies.

Extensive Industry Experience
Over 20 years delivering practical solutions for real-world applications.

Flexible Customization Service
Products and systems can be tailored to customer needs, supporting OEM and project solutions.

Large-Scale Manufacturing Base
A 20,000 m² production facility ensures stable production capacity and reliable quality control.

Our Certificate

Our products comply with international quality and safety standards such as CE, FCC, and ISO.

02-ISO ROHS

FAQ

Q: Can these converters be customized for specific projects?

A: Yes, they support special voltage outputs, thermal design adjustments, and pin configurations to fit customer requirements.

Q: What mounting options are available?

A: Standard through-hole soldering with 1.5 mm pins allows easy integration into compact boards and devices.

Q: Are they suitable for portable and lightweight applications?

A: Yes, their ultra-thin, 10–20 g design makes them ideal for drones, wearable devices, and IoT modules where weight and space are critical.

Q: Is remote on/off control possible?

A: Yes, the ON/OFF pin enables remote switching via control signals from 3.5 V to 25 V.

Q: Do they support pre-compliance testing for EMC?

A: Yes, evaluation kits and pre-compliance EMC guidance are available to help customers validate designs before full production.

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Ultra-Thin Isolated Power Converter