I6A4W010A033V-001-R.

DC-DC CONVERTER, 3.3V-40V

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: TDK-LAMBDA
Product type: DC / DC Non Isolated Board Mount Converters - Adjustable Output
Power Supply; DC-DC CONVERTER, 3.3V-40V; Power Supply Applications:ITE; Output Power Max:250W; Output Voltage Min:3.3V; Output Voltage Max:40V; Output Current Max:10A; DC / DC Converter Output
SVHC: No SVHC (15-Jan-2018)
Depth: 33mm
Width: 22.9mm
Height: 12.1mm
Product Range: i6A4W Series
Output Power Max: 250W
Output Current Max: 10A
Output Voltage Max: 40V
Output Voltage Min: 3.3V
Input Voltage DC Max: 53V
Input Voltage DC Min: 9V
DC / DC Converter Type: Sixteenth Brick
Power Supply Applications: ITE
DC / DC Converter Output Type: Adjustable

Delivery and price
Units per pack	50
Price	27.88 €
Current stock	10+
Lead time	30 days

Datasheet

i6A4W Series 

250W, 9 to 53V Input Non-Isolated Step Down DC-DC Converter 

https://product.tdk.com/en/power/i6a www.emea.lambda.tdk.com/i6a 

The i6A4W series of non-isolated DC-DC step-down converters are ideal for creating additional high current output voltage rails from a single output 12V, 24V or 48V AC-DC or DC-DC power supply. The highly efficient i6A4W series accepts a very wide DC input and has a wide output adjustment range, with a choice of 1/16th brick footprint or SIP package. Output trim, remote sense, negative or positive logic remote On-Off comes as standard features. Power good, frequency synchronization and output sequencing are optional features. 

|**Features**|**Benefits**|
|---|---|
|• Up to 250W in a 1/16th brick or SIP package|• Very High Power Density|
|• Very high Efficiency up to 97%|• Easier Thermal Management|
|• Wide Output Adjustment 3.3 to 15V & 3.3 to 40V|• One Part For Multiple Applications|
|• Minimal External Components Needed|• Less Board Area Required|
|• Low Airflow With Minimal Derating Requirements|• Easier To Cool In End System|



## **Model Selector** 

|**Model Selector**||||||||
|---|---|---|---|---|---|---|---|
||Output|Max|Max|Positive|Negative|Full|Package|
|Model|Voltage|Current|Power|Logic|Logic|Feature||
||(V)(1)|(A)|(W)|On/Off|On/Off|||
|i6A4W010A033V-001-R|3.3 to 40|10|250|-|Yes|-|DIP|
|i6A4W010A033V-0S1-R|3.3 to 40|10|250|-|Yes|-|SIP|
|i6A4W020A033V-000-R|3.3 to 15|20|250|Yes|-|-|DIP|
|i6A4W020A033V-001-R|3.3 to 15|20|250|-|Yes|-|DIP|
|i6A4W020A033V-0S1-R|3.3 to 15|20|250|-|Yes|-|SIP|
|i6A4W020A033V-002-R|3.3 to 15|20|250|Yes|-|Yes|DIP|
|i6A4W020A033V-003-R|3.3 to 15|20|250|-|Yes|Yes|DIP|
|i6A4W020A033V-0S3-R|3.3 to 15|20|250|-|Yes|Yes|SIP|
|i6A4W020A033V-005-R|3.3 to 15|20|250|-|Yes|Yes(2)|DIP|
|Preferred model||||||||



## **Related Products** 

|Type|Part Number|Description|
|---|---|---|
|DC-DC Buck Converter|i3A|100W, Input 9-53V, Output 5-30V 4.5A or 3.3-16.5V 8A|
|DC-DC Buck Converter|i6AN|75W, Input 9-40V, Negative Output -3.3 to -30V, 8A|
|DC-DC Buck Converter|i6A24|250W, Input 9-40V, Output 3.3-24V 14A|
|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|i6A20A-001-EVK-S1PX|Evaluation kit with i6A4W020A033V-001-R modules|
||i6A20A-001-EVK-S1CC|Evaluation kit with i6A4W020A033V-001-R modules set for constant current operation|
||i6A10A-001-EVK-S1PX|Evaluation kit with i6A4W010A033V-001-R modules|
||i6A10A-001-EVK-S1CC|Evaluation kit with i6A4W010A033V-001-R modules set for constant current operation|



i6A4W Series 

1 

|**Specification**||||||
|---|---|---|---|---|---|
|Model||i6A4W010A033V|i6A4W010A033V||i6A4W020A033V|
|**Input**||||||
|Input Voltage Range|Vdc||9 to 53V (Turn on at 8V typ)|||
|Input Current|A||20A maximum|||
|Efficiency<br>Safety Agency Certifications|%<br>-|94 - 97.5<br>90 - 97.0<br>IEC/UL/CSA/EN 62368-1, IEC/UL/CSA/EN 60950-1, CE Mark||||
|**Output**||||||
|Output Voltage Tolerance|%||±4|||
|Switching Frequency|kHz||400|||
|Line Regulation|%|0.3|||0.4|
|Load Regulation|%|0.9|||1.2|
|External Load Capacitance|uF||0 - 1500|||
|Output Ripple & Noise (pk-pk)|mV|50|||20|
|Overcurrent Protection Threshold|A|15|||27|
|Remote On / Off|-||See options table|||
|Remote Sense|-|(+) Sense, compensating up to 5% of output voltage||||
|Power Good|-||Optional (Full Feature Version)|||
|Frequency Synchronization|-||Optional (Full Feature Version)|||
|Output Sequencing|-||Optional (Full Feature Version)|||
|Parallel Operation|-||Not possible|||
|Series operation|-||Not possible|||
|**Environmental**||||||
|Operating Temperature|°C|-40 to 125 (see thermal data on website)||||
|Storage Temperature|°C||-55 to 125|||
|Cooling|-||Convection or forced air|Convection or forced air||
|**Other**||||||
|Weight|g||15|||
|Size (LxWxH)|mm|DIP Version:  33 x 22.9 x 12.1, SIP Version: 33 x 11.4 x 24.8||||
|Size (LxWxH)|In|DIP Version:  1.30 x 0.9 x 0.74, SIP Version: 1.30 x 0.45 x 0.98|DIP Version:  1.30 x 0.9 x 0.74, SIP Version: 1.30 x 0.45 x 0.98|DIP Version:  1.30 x 0.9 x 0.74, SIP Version: 1.30 x 0.45 x 0.98|DIP Version:  1.30 x 0.9 x 0.74, SIP Version: 1.30 x 0.45 x 0.98|
|MTBF - Telcordia SR-332                                        -|MTBF - Telcordia SR-332                                        -|MTBF - Telcordia SR-332                                        -|> 12 Mhrs; 100% Load; Ta = 40 °C|> 12 Mhrs; 100% Load; Ta = 40 °C|> 12 Mhrs; 100% Load; Ta = 40 °C|
|Warranty|yrs||3|||



Notes See website for detailed specifcations. 

(1) Output voltage cannot exceed input voltage. Refer to Input vs. Output graphs provided. 

(2) Full Feature module but without the SEQ (Sequencing) Pin 34 installed. This eliminates the need for external pull-up resistor when Sequencing feature is not being used. 

(3) If the Sequencing feature will not be used, the SEQ Pin 34 needs to be tied to a 1.8-3.3V source via a 10k resistor. See Full specifcation for details. 

## **Typical Application Circuit** 

Recommendation 

1. TRIM resistor Rup should be connected to the i6A module as close as possible. 

i6A4W Series 

2 

## **Output vs. Input Voltage Operating Range** 

## **Output vs. Input Voltage Operating Range** 

**==> picture [317 x 7] intentionally omitted <==**

**----- Start of picture text -----**<br>
i6A4W020A033V i6A4W010A033V<br>**----- End of picture text -----**<br>


## **Mechanical Specification (Horizontal Mount Through Hole)** 

## **Recommended Hole Pattern (top view)** 

**==> picture [493 x 368] intentionally omitted <==**

**----- Start of picture text -----**<br>
33.0 [1.30]<br>3.8 [0.15] 3.8 [0.15]<br>Pin1 Pin8<br>—  @ —s<br>3.8 [0.150] 3.8 [0.150]<br>Pin34 Pin7<br>7.6 [0.300] 7.6 [0.300]<br>15.2 [0.600] Pin2 Pin6 15.2 [0.600]<br>11.4 [0.450] 22.9 [0.90]<br>Pin5<br>Pin33 Pin4<br>Pin3<br>Pin32<br>2.5 [0.10]<br>20.3 [0.800]<br>24.1 [0.950]<br>2.5 [0.10] | anik 2.5 [0.10]<br>27.9 [1.100]<br>Pinout<br>Mechanical Specification<br>PIN  Function  PIN  Function<br>1  VIN (+)  7  SENSE (+) 33.0 [1.30]<br>2  ON / OFF  8  VOUT (+)<br>3  VIN (-)  32  Sync (Option) on Ul<br>4  VOUT (-)  33  MS (Option) OH L] 22.9 [0.90]<br>5  PWR GOOD (Option)  34  SEQ (Option) L_]<br>6  TRIM eG |--ss<br>Pin base material is brass or copper with gold over nickel plating.<br>12.1 [0.474]<br>MAX<br>1.02 [0.040] DIA Pins 1.57 [0.062] DIA Pins<br>1.78 [0.070] DIA Stand-offsup to 9 Places 2.59 [0.102] DIA Stand-offs2 Places 3.7 [0.14]4.6 [0.18] Optional Pin Length<br>**----- End of picture text -----**<br>


i6A4W Series 

3 

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

## **Mechanical Specification (SIP - Through Hole)** 

## **Recommended Hole Pattern (top view)** 

**==> picture [510 x 230] intentionally omitted <==**

|PIN<br>Function<br>PIN<br>Function<br>1<br>VIN (+)<br>10<br>TRIM<br>2<br>VIN (+)<br>11<br>VOUT (-)<br>3<br>VIN (+)<br>12<br>VOUT (-)<br>4<br>VIN (-)<br>13<br>VOUT (-)<br>5<br>ON / OFF<br>14<br>SENSE (+)<br>6<br>MS (Option)<br>15<br>VOUT (+)<br>7<br>Sync (Option)<br>16<br>VOUT (+)<br>8<br>SEQ (Option)<br>17<br>VOUT (+)<br>9<br>PWR GOOD (Option)<br>18<br>VOUT (+)<br>**Pinout**<br>**Mechanical Speci**|**fcation**|
|---|---|
|||
|||



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

i6A4W Series 

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## **TDK-Lambda France SAS** 

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

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

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Tel: +49 7841 666 0 info.germany@de.tdk-lambda.com www.emea.lambda.tdk.com/de 

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## **C.I.S.** 

## **Commercial Support:** 

Tel: +7 (495) 665 2627 

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Tel: +7 (812) 658 0463 info@tdk-lambda.ru 

www.emea.lambda.tdk.com/ru 

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

i6A4W 260705 Jul 1st, 2021 V4 

i6A4W Series 

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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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