I3A4W008A033V-001-R

Non Isolated POL DC/DC Converter, ITE, Module, 100 W, 3.3 V, 16.5 V, 8 A

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Manufacturer: TDK-LAMBDA
Product type: DC / DC Non Isolated Board Mount Converters - Adjustable Output
Output Power Max:100W; Output Voltage Min:3.3V; Output Voltage Max:16.5V; Output Current Max:8A; DC / DC Converter Output Type:Adjustable; DC / DC Converter Type:Module; Input Volt
SVHC: No SVHC (15-Jan-2018)
Depth: 19.1mm
Width: 23.4mm
Height: 9.6mm
Product Range: i3A Series
Output Power Max: 100W
Output Current Max: 8A
Output Voltage Max: 16.5V
Output Voltage Min: 3.3V
Input Voltage DC Max: 53V
Input Voltage DC Min: 9V
DC / DC Converter Type: Module
Power Supply Applications: ITE
DC / DC Converter Output Type: Adjustable

Delivery and price
Units per pack	100
Price	19.95 €
Current stock	500+
Lead time	30 days

Datasheet

i3A Series 

## 100W, 9 to 53V Input Non-Isolated Step-Down DC-DC Buck Converter 

https://product.tdk.com/en/power/i3a www.emea.lambda.tdk.com/i3a 

The i3A series of non-isolated DC-DC step-down converters are ideal for creating additional output voltage rails from a single output 12V, 24V or 48V AC-DC or DC-DC power supply including battery sources. The highly efficient i3A series accepts a wide DC input and has a wide output adjustment range in a compact 1/32nd brick footprint. Standard features include output trim, remote sense and negative logic remote On/Off, with an optional power good feature available. 

|**Features**|**Benefits**|
|---|---|
|• Up to 100 W in a 1/32nd brick package|• High Power Density, Less Board Area Needed|
|• High Efficiency Up to 98%|• Longer Battery Life / Less Power Consumed|
|• Wide 3.3 to 16.5V or 5 to 30V Output Adjustment|• One Part Supports Multiple System Voltages|
|• 9 to 53V Input Range|• Can Operate From Different DC Source Voltages Including Batteries|
|• Low Component Count With Minimal External Components|• Low Cost|
|• Minimal Derating Requirements in Low Airflow Environments|• Easy to Cool in End System|



## **Model Selector** 

|**Model Selector**|||||||
|---|---|---|---|---|---|---|
||Input|Output|Max|Max|Negative||
|Model|Voltage|Voltage|Current|Power|Logic|Power|
||(V)|(V)|(A)|(W)|On/Off|Good|
|i3A4W008A033V-001-R|9 - 53|3.3 - 16.5|8|100|Yes|-|
|i3A4W005A150V-001-R|9 - 53|5 - 30|4.5|100|Yes|-|
|i3A4W008A033V-003-R9 - 53|9 - 53|3.3 - 16.5|8|100|Yes|Yes|
|i3A4W005A150V-003-R|9 - 53|5 - 30|4.5|100|Yes|Yes|



## **Related Products** 

|Type|Part Number|Description|
|---|---|---|
|DC-DC Buck-Boost Converter|i1C|200W, Input 9-36V or 18-75V, Output 9.6-28V, 1x1 inch Footprint|
|DC-DC Buck Converter|i6A4W|250W, Input 9-53V, Output 3.3-40V 10A or 3.3-15V 20A|
|DC-DC Buck Converter|i6A24|250W, Input 9-40V, Output 3.3-24V 14A|
|DC-DC Buck Converter|i6AN|75W, Input 9-40V, Negative Output -3.3 to -30V, 8A|
|Ruggedized DC-DC Buck Converter|RGA|250W, Input 9-40V or 9-53V, Output 3.3-24V or 3.3 up to 40V|
|Ruggedized DC-DC Buck Converter|RGB|400-750W, 9-18Vin, 0.8-8Vo 60A, 18-32Vin, 3.3-18Vo 45A, 18-60Vin, 3.3-24Vo 33A|
|Ruggedized DC-DC Buck-Boost Converter|RGC|300W, Input 9-53V, Output 9.6-48V, 8A; or 5-28V, 12.5A|
|DC-DC Buck Converter|i7A|500-750W, Input 18-60V or 18-32V, Output 3.3-24V 33A or 3.3-18V 45A|
|DC-DC Buck-Boost Converter|i7C|300W, Input 9-53V or 9-36V, Output 9.6-48V 8A, 5-28V 12.5A or 8-24V 20A|
|Evaluation Kit|i3A05A-C01-EVK-S1|Compact Evaluation kit with i3A4W005A150V-001-R module|
|Evaluation Kit|i3A08A-C01-EVK-S1|Compact Evaluation kit with i3A4W008A033V-001-R module|
|Evaluation Kit|i3A5A8A-001-VK-D2PP|Evaluation kit with i3A4W005A150V-001-R and i3A4W008A033V-001-R modules|



i3A Series 

1 

**==> picture [517 x 34] intentionally omitted <==**

|**Specifcation**|**Specifcation**|**Specifcation**|**Specifcation**|
|---|---|---|---|
|Model<br>i3A4W008A033V<br>i3A4W005A150V||||
|**Input**||||
|Input Voltage Range|Vdc|9 - 53||
|Input Current (max)|A|10 (max)||
|Turn-ON  Input Voltage|Vdc|8||
|Turn-OFF Input Voltage<br>|Vdc|7 - 9||
|Effciency<br>|%|89 - 96.5|95.5 - 98|
|Safety Certifcations and Markings|-|IEC/UL/CSA/EN 62368-1, 60950-1, CE Mark and UKCA Mark||
|**Output**||||
|Output Voltage Tolerance|%|± 4||
|Line Regulation|%|0.3|0.2|
|Load Regulation|%|0.7|0.5|
|External Load Capacitance (1)|uF|0 - 1200|0 - 1000|
|Ripple & Noise|mVpp|20|40|
|Switching Frequency|kHz|450|400|
|Overcurrent Protection Threshold (typ)|A|14|9|
|Overtemperature Protection|-|Yes||
|Output Voltage Adjustment Range|Vdc|3.3 - 16.5|5 - 30|
|Remote Sense|-|(+) Sense, compensating up to 5% of output voltage||
|Remote On/Off||Negative Logic||
|Power Good|-|Optional (see Model Selector Table)||
|**Environmental**||||
|Operating Temperature (Tref)|°C|-40 to 125||
|Storage Temperature|°C|-55 to 125||
|Humidity (non condensing)|%RH|5 - 95 (Operating & Storage)||
|Altitude(3)|m|2000||
|Cooling|-|Convection or forced air||
|**Other**||||
|Weight (Typ)|g|8||
|Size (LxWxH)|mm|19.1 x 23.4 x 9.6||
|Size (LxWxH)|Inches|0.75 x 0.92 x 0.38||
|MTBF - Telcordia SR-332||> 14 MHrs; 100% Load; Ta = 40 °C||
|Warranty|yrs|3 years||



(1) For Vo ≥ 8Vdc, minimum Cout = 200 uF. 

(2) See website for detailed product specifcations. 

(3) Contact Technical Support for operation at higher altitudes. 

|**Pinout**||||
|---|---|---|---|
|PIN|Function|PIN|Function|
|1|Vin (+)|5|Power Good (option)|
|2|On / Off|6|Trim|
|3|Vin (-) / GND|7|Sense +|
|4|Vout (-) / GND|8|Vout (+)|



Pin base material is brass or copper with gold over nickel plating. 

i3A Series 

2 

## **Typical Application Circuit (i3A)** 

Recommendations: 

- 1) TRIM resistor Rup should be connected to the i3A module as close as possible. 

**Output vs. Input Voltage Operating Range** 

**Output vs. Input Voltage Operating Range** 

i3A Series 

3 

## **Mechanical Specification** 

## **Recommended PCB Hole Pattern** 

i3A Series 

4 

## **TDK-Lambda France SAS** 

Tel: +33 1 60 12 71 65 tlf.fr-powersolutions@tdk.com www.emea.lambda.tdk.com/fr 

## **TDK-Lambda Americas** 

Tel:  +1 800-LAMBDA-4 or 1-800-526-2324 tla.powersolutions@tdk.com www.us.lambda.tdk.com 

## **Italy Sales Office** 

Tel: +39 02 61 29 38 63 tlf.it-powersolutions@tdk.com www.emea.lambda.tdk.com/it 

## **Netherlands** 

## **TDK Electronics do Brasil Ltda** 

Tel: +55 11 3289-9599 sales.br@tdk-electronics.tdk.com www.tdk-electronics.tdk.com/en 

tlf.nl-powersolutions@tdk.com www.emea.lambda.tdk.com/nl 

## **TDK-Lambda Germany GmbH** 

Tel: +49 7841 666 0 tlg.powersolutions@tdk.com www.emea.lambda.tdk.com/de 

## **TDK-Lambda Corporation** 

Tel: +81-3-6778-1113 www.jp.lambda.tdk.com 

## **TDK-Lambda (China) Electronics Co. Ltd.** 

Tel: +86 21 6485-0777 tlc.powersolutions@tdk.com www.lambda.tdk.com.cn 

## **Austria Sales Office** 

Tel: +43 2256 655 84 tlg.at-powersolutions@tdk.com www.emea.lambda.tdk.com/at 

## **Switzerland Sales Office** 

Tel: +41 44 850 53 53 tlg.ch-powersolutions@tdk.com www.emea.lambda.tdk.com/ch 

## **Nordic Sales Office** 

## **TDK-Lambda Singapore Pte Ltd.** 

Tel: +65 6251 7211 tls.marketing@tdk.com www.sg.lambda.tdk.com 

## **TDK India Private Limited, Power Supply Division** 

Tel:   +91 80 4039-0660 mathew.philip@tdk.com www.sg.lambda.tdk.com 

Tel: +45 8853 8086 tlg.dk-powersolutions@tdk.com www.emea.lambda.tdk.com/dk 

## **TDK-Lambda UK Ltd.** 

Tel: +44 (0) 12 71 85 66 66 tlu.powersolutions@tdk.com www.emea.lambda.tdk.com/uk 

## **TDK-Lambda Ltd.** 

Tel: +9 723 902 4333 tli.powersolutions@tdk.com www.emea.lambda.tdk.com/il-en 

For Additional Information, please visit https://product.tdk.com/en/power/ 

i3A  260817 December 2nd, 2024 V4 

i3A Series 

5

Updated at April 10, 2026

TDK-Lambda is globally recognized as a premier manufacturer of highly reliable power supply solutions and power management equipment. With a strong engineering heritage, the company is a trusted partner for mission-critical applications across the industrial, medical, telecommunications, and test and measurement sectors, delivering components that meet stringent international performance and safety standards. Our extensive portfolio of TDK-Lambda products is heavily focused on comprehensive power and line protection, highlighted by a vast selection of industry-leading AC/DC converters. Engineered to deliver exceptional efficiency and stable performance in demanding environments, these power supplies form the backbone of our offering and are built to support the rigorous power demands of modern electronic infrastructure. To complement these primary power solutions, we also offer a targeted range of high-performance DC/DC converters designed for precise, board-level voltage regulation. Furthermore, to ensure the optimal performance and longevity of these power systems, our catalog includes specialized cooling and thermal management components, such as natural convection heat sinks, providing complete thermal stability for your most critical designs.

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