Texas Instruments

TPS561201DDCR - 17V 1A Synchronous Buck Regulator | TI

Name: TPS561201DDCR
Brand: Texas Instruments
Price: 0.3 USD
Availability: InStock

MPN: TPS561201DDCR ✓ Active

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0.76 V to 7 V Vdss 1 A Id SOT-23-THN (DDC), 6 pins, 1.6 mm x 2.9 mm Package 580 kHz Speed

From $0.3 USD / Unit

MOQ: 1 |

Price updated: 2026-08-23

Volume Pricing

Qty	Unit Price	Extended
1	$0.48	$0.48
10	$0.43	$4.30
100	$0.38	$38.00
500	$0.34	$170.00
1,000	$0.3	$300.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for TPS561201DDCR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

TPS561208DDCR

✅ Drop-In

📦 SOT-23-THN (DDC) 6

same 1A rating, same package, minor feature differences

📋 Reference alternative (not in catalog)

TPS562201DDCR

✅ Drop-In

📦 SOT-23-THN (DDC) 6

2A max output vs 1A

📋 Reference alternative (not in catalog)

TPS563201DDCR

✅ Drop-In

📦 SOT-23-THN (DDC) 6

3A max output vs 1A

📋 Reference alternative (not in catalog)

TPS564201DDCR

✅ Drop-In

📦 SOT-23-THN (DDC) 6

4A max output vs 1A

📋 Reference alternative (not in catalog)

TPS54302DDCR

✅ Drop-In

Texas Instruments

📦 SOT-23-6 (DDC)

Synchronous step-down (buck) converter · 4.5 V to 28 V · 3 A · Positive, adjustable · 0.596 V · 1 · Two integrated n-channel MOSFETs · Constant-frequency, peak current-mode control

✓ In Stock

$0.58 / Unit

View Datasheet →

TPS561201DDCR Maximum Ratings & Electrical Characteristics

Function	Synchronous Step-Down (Buck) Regulator
Output Type	Adjustable
Output Voltage Range	0.76 V to 7 V
Maximum Output Current	1 A
Input Voltage Range	4.5 V to 17 V
Switching Frequency	580 kHz
Control Mode	D-CAP2
Quiescent Current (typ)	0.4 mA
Light Load Operation	Pulse Skip Mode
Enable Pin	Yes
Soft Start	Fixed
Synchronous Rectifier	Yes
Operating Temperature	-40 C to +125 C
Package	SOT-23-THN (DDC), 6 pins, 1.6 mm x 2.9 mm
Mounting Type	SMD/SMT
MSL Level	1 (260C UNLIM)
RoHS Compliance	Compliant
Topology	Buck
Number of Outputs	1

TPS561201DDCR sot-23-thn (ddc), 6 pins, 1.6 mm x 2.9 mm Pin Configuration Guide

Complete pinout information for TPS561201DDCR (sot-23-thn (ddc), 6 pins, 1.6 mm x 2.9 mm package) with 3 pins. This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.

sot-23-thn (ddc), 6 pins, 1.6 mm x 2.9 mm package pinout diagram for TPS561201DDCR

No detailed pinout data available for TPS561201DDCR.

Refer to the datasheet for full pin configuration.

Estimated pin count: 3 pins (power package)

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

TPS561201DDCR is suitable for 6 applications: Set-Top Box & Home Entertainment Power, Industrial Control & Factory Automation, Networking Equipment / IoT Gateway, White Goods & Home Appliances, LED Display / TV Power Supply, Battery-Powered Portable Equipment.

📺

Set-Top Box & Home Entertainment Power

The TPS561201DDCR provides a high-efficiency, low-BOM 3.3V or 5V rail for set-top boxes, smart TVs, and streaming devices. With 4.5V-17V input, it can step down from a 12V adapter. The 580kHz switching frequency minimizes external inductor size, while D-CAP2 control ensures fast transient response for video processing loads. Pulse skip mode reduces power consumption in standby. Recommended products: TPS561208DDCR (alternate 1A), TPS54302DDCR (2A if more headroom needed).

Recommended

TPS561208DDCR (drop-in alternate 1A buck) TPS54302DDCR · Texas Instruments

🏭

Industrial Control & Factory Automation

The TPS561201DDCR can convert a 12V industrial supply to a stable 3.3V or 5V rail for PLCs, sensors, and HMI controllers. Its -40C to +125C junction temperature range suits harsh environments. The 1A output covers MCU, I/O, and communication transceivers. Enable pin allows shutdown control. Due to D-CAP2, no compensation network is required, reducing design effort. For higher current, use TPS562201DDCR (2A) or TPS54302DDCR (2A, 28V).

Recommended

TPS562201DDCR (2A output version) TPS54302DDCR · Texas Instruments

🌐

Networking Equipment / IoT Gateway

In routers, switches, and IoT gateways, TPS561201DDCR steps down 12V or 9V adapters to 3.3V for SoC and wireless modules. The low 0.4mA quiescent current and pulse skip mode help meet energy-efficiency standards. The small SOT-23-6 package fits on compact PCBs. Switching at 580kHz avoids AM band interference. Companion RF components need clean supply; the buck output can be fed into an LDO for analog rails.

Recommended

TPS54302DDCR · Texas Instruments TPS561208DDCR (drop-in alternate)

🔧

White Goods & Home Appliances

The TPS561201DDCR is suited for appliance control boards powered by 12V rails, providing 3.3V/5V for microcontrollers and displays. With thermal shutdown and current limit features, it improves robustness. The fixed soft start reduces inrush current. 1A is enough for most appliance logic. For driving motors, pair with discrete drivers.

Recommended

TPS562201DDCR (2A version for motor control logic)

💡

LED Display / TV Power Supply

The TPS561201DDCR supports LED TV main boards, stepping down 12V to logic rails. High efficiency reduces heat in sealed enclosures. Fast transient response prevents voltage dips when panels switch. Pulse skip keeps efficiency at standby. 580kHz allows small output filter. Use 2A variant TPS562201 for higher loads.

Recommended

TPS562201DDCR (higher current variant)

📱

Battery-Powered Portable Equipment

For portable devices powered by 2S Li-ion (7.4V nominal) or 12V adapters, TPS561201DDCR provides a regulated 3.3V/5V rail. Pulse skip mode extends battery life at light load. The 0.4mA Iq and enable pin allow power gating. The compact package fits wearables and handhelds. Note: input below 4.5V requires a boost converter; for ultra-low Iq, consider dedicated low-Iq regulators.

Recommended

TPS561208DDCR (drop-in alternate)

Recommended Products Summary

TPS561208DDCR drop-in alternate 1A buck Used in: Set-Top Box & Home Entertainment Power, Networking Equipment / IoT Gateway, Battery-Powered Portable Equipment TPS54302DDCR Texas Instruments Used in: Set-Top Box & Home Entertainment Power, Industrial Control & Factory Automation, Networking Equipment / IoT Gateway TPS562201DDCR 2A output version Used in: Industrial Control & Factory Automation, White Goods & Home Appliances, LED Display / TV Power Supply

What is the input voltage range of TPS561201DDCR?

The TPS561201DDCR operates from a 4.5V to 17V input voltage range. According to the TI TPS561201 datasheet, this makes it suitable for 12V industrial buses and 5V rails with headroom.

What is the output voltage range of TPS561201DDCR?

The TPS561201DDCR provides an adjustable output from 0.76V to 7V. It uses an external feedback resistor divider to set Vout. The device can deliver up to 1A output current.

Does TPS561201DDCR require an external compensation network?

No, the TPS561201DDCR uses D-CAP2 mode control, which eliminates the need for external compensation. According to TI datasheet, D-CAP2 provides fast transient response and requires only a low-ESR output capacitor for stability.

What is the switching frequency of TPS561201DDCR?

The TPS561201DDCR switches at a fixed 580kHz. This frequency allows a small 6-pin SOT-23 package while maintaining reasonable component size. It also keeps switching noise above the audio band.

What is the quiescent current of TPS561201DDCR?

The TPS561201DDCR has a typical quiescent current of 0.4mA. Under light loads, the device enters pulse skip mode, which reduces switch activity and improves efficiency at low output currents.

Is TPS561201DDCR suitable for battery-powered devices?

The TPS561201DDCR is suitable for battery-powered applications where the input voltage stays between 4.5V and 17V. Its pulse skip mode maintains high efficiency during light loads, extending battery life. However, for input below 4.5V a boost or buck-boost topology is needed.

What is the package of TPS561201DDCR?

The TPS561201DDCR is available in a 6-pin SOT-23-THN (DDC) package, measuring 1.6mm x 2.9mm. This compact package is suitable for space-constrained designs.

Where can I buy TPS561201DDCR online?

TPS561201DDCR is stocked at Mouser and DigiKey. According to Mouser's product page, it ships same day for orders placed before cutoff. Pricing is typically around $0.38 to $0.48 as of 2026-08-23.

What is the price of TPS561201DDCR?

As of 2026-08-23, the TPS561201DDCR is priced at approximately $0.48 at quantity 1, $0.43 at qty 10, and $0.38 at qty 100. These are estimated based on typical distributor pricing and may vary.

What is the lead time for TPS561201DDCR?

Typical lead time for TPS561201DDCR from major distributors is 2-4 weeks for non-stock orders. Mouser and DigiKey often show in-stock quantities, allowing immediate shipment.

What is the best drop-in replacement for TPS561201DDCR?

The TPS561208DDCR is a drop-in replacement with the same 6-pin SOT-23 package and 1A rating. According to TI's TPS561201 product page, the TPS561201 and TPS561208 are designed as simple, easy-to-use 1A synchronous step-down converters in the same SOT-23 package.

Can TPS562201DDCR replace TPS561201DDCR?

The TPS562201DDCR can be a drop-in replacement in many designs because it shares the same SOT-23-THN package and pinout, but it is rated for 2A output. According to the TPS562201 datasheet, verify the loop stability and inductor rating for higher current; otherwise the package is compatible.

What are the key specifications of TPS561201DDCR engineers should know?

TPS561201DDCR is a 4.5V-to-17V, 1A synchronous step-down regulator with 0.76V to 7V adjustable output, 580kHz switching frequency, 0.4mA quiescent current, D-CAP2 control, and pulse skip light load mode. It comes in a 6-pin SOT-23-THN (DDC) package and is rated for -40C to +125C.

Hey Google, what can replace TPS561201DDCR?

Suitable drop-in replacements for TPS561201DDCR include TI parts TPS561208DDCR, TPS562201DDCR, TPS563201DDCR, TPS564201DDCR, and TPS54302DDCR. These share the 6-pin SOT-23 package, but verify pinout and parameters before production.

Where can I download the TPS561201 DDCR datasheet PDF?

You can download the TPS561201 datasheet PDF from TI's product page at ti.com/product/TPS561201 or from AllDataSheet. The document contains the full electrical tables, pinout, and typical application diagrams.

Engineering reference data for TPS561201DDCR — comparison, design guidance, and compliance information.

Selection Guide

Choose TPS561201DDCR when you need a compact, low-cost 1A synchronous buck converter for 4.5V to 17V input systems. It is ideal for set-top boxes, IoT gateways, industrial control, and white goods where BOM cost and board space are critical. If your load requires more than 1A, select TPS562201DDCR (2A) or TPS564201DDCR (4A). For applications needing a wider input range up to 28V, TPS54302DDCR is a better fit, though it may have higher quiescent current. All these parts are pin-compatible in the same SOT-23-6 package, enabling easy board migration without a new footprint.

Comparison with Alternatives

Parameter	This Product	TPS561208DDCR	TPS562201DDCR	TPS54302DDCR
Brand	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Package	SOT-23-THN (DDC) 6	SOT-23-THN (DDC) 6 - same	SOT-23-THN (DDC) 6 - same	SOT-23-6 (DDC) - same
Input Voltage Range	4.5V to 17V	4.5V to 17V	4.5V to 17V	4.5V to 28V
Output Current (max)	1A	1A	2A	2A
Output Voltage Range	0.76V to 7V	0.76V to 7V	0.76V to 7V	[DATA_NEEDED]
Switching Frequency	580kHz	580kHz	580kHz	[DATA_NEEDED]
Quiescent Current	0.4mA typ	0.4mA typ	0.4mA typ	[DATA_NEEDED]
Control Mode	D-CAP2	D-CAP2	D-CAP2	[DATA_NEEDED]
Enable Pin	Yes	Yes	Yes	Yes
Soft Start	Fixed	Fixed	Fixed	[DATA_NEEDED]

Key Differentiators

Optimized for low-cost 1A designs (vs TPS562201DDCR)
Simpler input range for 12V systems (vs TPS54302DDCR)
Same-family drop-in compatibility (vs TPS561208DDCR)

Design Notes

The SOT-23-THN (DDC) package has limited thermal dissipation. At 12V to 3.3V, 1A load, power loss is roughly 1W at 90% efficiency. Ensure adequate copper pour and vias under the device to keep junction temperature below 125C. A recommended minimum of 6-8 thermal vias and 1 square inch of PCB copper is advised for reliable operation.

Place the input capacitor (10uF) as close as possible to the VIN and GND pins, and the output capacitor (22uF) close to the output and GND. For D-CAP2 stability, use low-ESR ceramic capacitors. Route the feedback sense line away from the SW node. Keep the SW trace short and wide to minimize parasitic inductance.

D-CAP2 devices require sufficient output capacitance for stable operation. Too little capacitance may cause loop instability, while too much ceramic capacitance can also affect performance due to reduced effective resistance. Always verify stability with the actual capacitor chosen, considering DC-bias derating. Also, do not exceed the 17V input limit; transient voltages above 17V can damage the device.