Texas Instruments

TPS54283 - Dual 2A 300kHz Buck Converter | Texas Instruments

Name: TPS54283PWP
Brand: Texas Instruments
SKU: TPS54283PWP
Price: 2.18 USD
Availability: InStock

MPN: TPS54283 ✓ Active

In Stock Ships in 1-3 business days

4.5 V to 28 V Vdss 2 A Id 14-PowerTSSOP (HTSSOP-14, PWP) 4.40 mm width Package 300 kHz (fixed) Speed

From $2.18 USD / Unit

MOQ: 1 |

Price updated: 2026-08-26

Volume Pricing

Qty	Unit Price	Extended
1	$3.89	$3.89
10	$3.46	$34.60
100	$2.98	$298.00
500	$2.52	$1,260.00
1,000	$2.18	$2,180.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for TPS54283 — 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:

TPS54286PWP

✅ Drop-In

📦 14-PowerTSSOP (HTSSOP-14, PWP)

same dual 2-A family, 600 kHz vs 300 kHz switching

📋 Reference alternative (not in catalog)

TPS54183PWP

✅ Drop-In

📦 14-PowerTSSOP (HTSSOP-14, PWP)

same pinout and 300 kHz, lower 1-A per-channel rating

📋 Reference alternative (not in catalog)

TPS54383PWP

✅ Drop-In

📦 14-PowerTSSOP (HTSSOP-14, PWP)

same pinout and 300 kHz, higher 3-A per-channel rating

📋 Reference alternative (not in catalog)

TPS54386PWP

✅ Drop-In

📦 14-PowerTSSOP (HTSSOP-14, PWP)

same pinout, 600 kHz, higher 3-A per-channel rating

📋 Reference alternative (not in catalog)

TPS54283 Maximum Ratings & Electrical Characteristics

Function	Dual non-synchronous buck converter
Number of Outputs	2
Input Voltage Range	4.5 V to 28 V
Output Current per Channel	2 A
Output Voltage Range	0.8 V to 90% of VIN
Switching Frequency	300 kHz (fixed)
Output Type	Adjustable
Integrated High-Side MOSFET	Yes
Low-Side Rectifier	External Schottky diode
Compensation	Internal
Package / Case	14-PowerTSSOP (HTSSOP-14, PWP) 4.40 mm width
Mounting Type	Surface Mount
Thermal Pad	Exposed PowerPAD
Operating Temperature Range	[DATA_NEEDED: Operating Temperature Range]
Quiescent Current	[DATA_NEEDED: Quiescent Current]
RoHS	unknown (not provided in verified data)

TPS54283 14-powertssop (htssop-14, pwp) 4.40 mm width Pin Configuration Guide

Complete pinout information for TPS54283 (14-powertssop (htssop-14, pwp) 4.40 mm width package). 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.

14-powertssop (htssop-14, pwp) 4.40 mm width package pinout diagram for TPS54283

No detailed pinout data available for TPS54283.

Refer to the datasheet for full pin configuration.

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

TPS54283 is suitable for 6 applications: Industrial Dual-Rail Power Supply, Broadband Gateway / DSL Modem Power, IP Security Camera Main Board, Set-Top Box / Media Player Power, 12-V Battery-Powered Industrial Equipment, Telecom / Networking Line Card.

🏭

Industrial Dual-Rail Power Supply

The TPS54283 is a natural fit for industrial dual-rail power supplies that convert a 24-V or 12-V bus into 5-V and 3.3-V logic rails. With a 4.5-V to 28-V input, each 2-A channel can drive MCU, FPGA, and sensor loads, while the integrated high-side MOSFET and internal compensation minimize external parts. One consideration is thermal: a 24-V to 5-V conversion at 2 A has large VIN-VOUT delta, so use a high-current Schottky diode and a large PowerPAD copper area to keep junction temperature within limits.

Recommended

🌐

Broadband Gateway / DSL Modem Power

Broadband gateways need multiple clean rails from a 12-V wall adapter. The TPS54283's two 2-A channels can generate 3.3 V for the SoC and 5 V for PHY or USB peripherals. The fixed 300-kHz switching reduces EMI in unshielded plastic enclosures, and internal compensation simplifies the BOM. At 2 A per channel, place the converter near the input connector and keep output traces short to minimize ripple; overall system thermal load should also factor in the adjacent Ethernet PHY and memory components.

Recommended

DP83848KSQ/NOPB · Texas Instruments TUSB321RWBR · Texas Instruments TLV743P · Texas Instruments

🎥

IP Security Camera Main Board

IP cameras powered over PoE use 48-V or 24-V to feed an intermediate 12-V rail, and the TPS54283 can then generate sensor-core and I/O rails. Its 2 A per channel covers CMOS image sensor, ISP, motor, and IR-LED auxiliary loads, while the 300-kHz switching keeps inductor size small for tight PCB form factors. Use the exposed PowerPAD to a ground pour and select a Schottky diode rated above the peak inductor current; the adjustable output also allows fine voltage trimming.

Recommended

OPA2172 · Texas Instruments TPS62130RGTR · Texas Instruments INA219BIDR · Texas Instruments

📺

Set-Top Box / Media Player Power

In set-top boxes and media players, the TPS54283 produces 5 V and 3.3 V from a 12-V adapter. Two 2-A channels are sufficient for the main SoC, DDR memory, Wi-Fi module, and front-end tuner. Internal compensation and integrated high-side MOSFET reduce BOM count and layout risk, and the dual outputs replace two single-channel bucks. Keep the switching node area small and the BOOT capacitor close to the IC; total board dissipation should be reviewed for fanless enclosures at full 2-A load.

Recommended

TUSB321RWBR · Texas Instruments SN74LVC2G17 · Texas Instruments TLV743P · Texas Instruments

⚡

12-V Battery-Powered Industrial Equipment

For battery-powered industrial equipment, the TPS54283 accepts a 12-V nominal battery with input variation from 9 V to 16 V within its 4.5-V to 28-V range. Two 2-A outputs can power a host controller and actuators or I/O. At lower battery voltages the fixed 300-kHz converter still keeps high efficiency; at 4.5-V minimum input, output voltage can still be programmed down to 0.8 V. Use low-ESR ceramic caps and a Schottky diode sized for the maximum inductor ripple current.

Recommended

INA219BIDR · Texas Instruments TPS62090 · Texas Instruments TLV743P · Texas Instruments

🌐

Telecom / Networking Line Card

On telecom line cards, board space is valuable and multiple rails are needed. The TPS54283's dual 2-A outputs generate 3.3 V and 1.8 V or 2.5 V from an intermediate 12-V bus, and the integrated high-side MOSFET keeps switching cells compact. The 300-kHz frequency stabilizes EMI across the card, and internal compensation reduces tuning effort. For higher-current rails, a companion TPS54383PWP (3 A) can be used, keeping the same HTSSOP-14 footprint.

Recommended

LM5117PMH/NOPB · Texas Instruments TLV743P · Texas Instruments DP83848KSQ/NOPB · Texas Instruments

Recommended Products Summary

What is the input voltage range of TPS54283?

The TPS54283 operates from a 4.5-V to 28-V input supply. According to the Texas Instruments product page, this dual 2-A buck converter is designed for input voltages between 4.5 V and 28 V, making it suitable for 5-V, 12-V, and 24-V rails with adequate margin. Always check the absolute maximum ratings in the datasheet before applying power.

What are the output current and output voltage range of TPS54283?

The TPS54283 provides two outputs, each rated at 2 A. Each channel is adjustable from 0.8 V up to 90% of the input voltage, so a 12-V input can generate a 5-V rail and a 3.3-V rail simultaneously. Output voltage is set with an external resistor divider.

What is the switching frequency of TPS54283?

TPS54283 switches at a fixed 300 kHz. According to TI, it is a '4.5V to 28V Input, Dual 2A Output, 300kHz Step-Down Converter with Internal Compensation.' The fixed 300-kHz frequency balances inductor size and efficiency for dual 2-A loads.

TPS54283 vs TPS54286 - which is better?

Choose based on switching frequency: TPS54283 runs at 300 kHz and TPS54286 at 600 kHz. At 600 kHz, the TPS54286 allows smaller output inductors but has higher switching losses; at 300 kHz, the TPS54283 is more efficient in many point-of-load designs. Both are 2-A dual non-synchronous buck converters in the same 14-pin HTSSOP package with 4.5-V to 28-V input.

What is the difference between TPS54283 and TPS54383?

The main difference is output current: the TPS54283 delivers 2 A per channel while the TPS54383 delivers 3 A per channel. Both are non-synchronous dual buck converters with a 4.5-V to 28-V input, 300-kHz switching, internal compensation, and the same 14-pin PowerTSSOP package, so they share the same footprint and pinout.

Can TPS54283 be used for 12-V input dual 2-A designs?

Yes. The TPS54283 is well suited to 12-V input designs because its 4.5-V to 28-V input range covers 12 V with margin. Each output delivers up to 2 A at an adjustable 0.8-V to 90%-of-VIN voltage, so a typical configuration is 5 V and 3.3 V from a single 12-V supply.

When should I choose TPS54283 over TPS54286?

Choose TPS54283 when you prefer 300-kHz switching for better efficiency, lower switching noise, and consistent EMI with other 300-kHz converters. Choose TPS54286 when you need 600-kHz operation to shrink inductor size. Both parts share the same pinout and 4.5-V to 28-V input range, so the PCB can accept either.

What is the best drop-in replacement for TPS54283?

The best drop-in replacements are other TI family members in the 14-pin PowerTSSOP package: TPS54286PWP (2 A, 600 kHz), TPS54183PWP (1 A, 300 kHz), and TPS54383PWP (3 A, 300 kHz). They are pin-compatible, same package, and cover the same 4.5-V to 28-V input range; only current rating or frequency changes.

Is there a non-TI cross-brand equivalent for TPS54283?

No widely documented non-TI pin-compatible drop-in equivalent for the TPS54283 was found in the verified web data or cross-reference search. Most parametrically similar dual buck converters from other vendors use different packages or pinouts. Verify with TI's cross-reference search tool or compare package and pinout before substituting a non-TI device.

Where can I buy TPS54283PWP online?

TPS54283PWP is available from authorized distributors including DigiKey and Mouser. DigiKey lists the part as a positive adjustable 0.8-V dual 2-A buck in a 14-PowerTSSOP package. Check both distributor sites for stock, pricing, and lead time; for reel-based assembly use the TPS54283PWPR tape-and-reel option.

What is the price and lead time of TPS54283?

Indicative pricing for TPS54283PWP as of 2026-08-27 is about $3.89 at qty 1 and $2.18 at qty 1000, but the verified web data returned no live distributor quote. Lead time is typically 1-2 weeks when stock is available at DigiKey or Mouser. Confirm current price and lead time before production.

Is TPS54283 in stock?

Availability changes daily. In the verified web snapshot from 2026-08-27, DigiKey showed TPS54283PWP with 'buy now, ships today' status. Mouser also lists the part. For production planning, confirm live stock and lead time on the DigiKey or Mouser product page, and consider the PWPR tape-and-reel variant for automated assembly.

Where can I download the TPS54283 datasheet PDF?

Download the TPS54283 datasheet PDF from the Texas Instruments GPN page at https://www.ti.com/lit/gpn/TPS54283. The document covers the TPS54283/TPS54286 dual non-synchronous buck family, including pinout, electrical specifications, and application circuits. DigiKey also hosts an HTML mirror of the TI datasheet for quick reference.

What are the key specifications of TPS54283 that engineers should know?

Key TPS54283 specifications: dual non-synchronous buck converter, 4.5-V to 28-V input, 2-A output per channel, adjustable 0.8-V to 90%-of-VIN output, fixed 300-kHz switching, integrated high-side MOSFET, internal compensation, and 14-pin PowerTSSOP package. Total power loss is the sum of both channels, so thermal layout and Schottky diode selection are critical.

Is TPS54283 the same as TPS54286?

No, but they are closely related pin-compatible parts. The TPS54283 switches at 300 kHz while the TPS54286 switches at 600 kHz. Both are dual 2-A non-synchronous buck converters with a 4.5-V to 28-V input range, adjustable 0.8-V output, integrated high-side MOSFET, and the same 14-pin PowerTSSOP package.

Engineering reference data for TPS54283 — comparison, design guidance, and compliance information.

Selection Guide

Choose the TPS54283 when you need two regulated 2-A outputs from a 4.5-V to 28-V input, want a simple non-synchronous design with an integrated high-side MOSFET and internal compensation, and prefer 300-kHz operation for efficiency and EMI control. It is ideal for 5-V/3.3-V dual-rail boards powered from 12-V or 24-V buses. If your rails must carry 3 A, move to the TPS54383 (300 kHz) or TPS54386 (600 kHz). If you need 600-kHz to shrink inductors and 2 A is enough, choose TPS54286. For lower-current, cost-sensitive designs, the 1-A TPS54183 saves BOM cost; for a true drop-in at the same current, TPS54286PWP is the closest part. No verified non-TI pin-compatible substitute was found, so stay within the TI family unless you re-verify pinout.

Comparison with Alternatives

Parameter	This Product	TPS54286PWP	TPS54183PWP	TPS54383PWP	TPS54386PWP
Brand	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Package	14-PowerTSSOP (HTSSOP-14, PWP)	14-PowerTSSOP - same	14-PowerTSSOP - same	14-PowerTSSOP - same	14-PowerTSSOP - same
Output Current per Channel	2 A	2 A	1 A	3 A	3 A
Switching Frequency	300 kHz	600 kHz	300 kHz	300 kHz	600 kHz
Input Voltage Range	4.5 V to 28 V	4.5 V to 28 V	4.5 V to 28 V	4.5 V to 28 V	4.5 V to 28 V
Output Voltage Range	0.8 V to 90% of VIN	0.8 V to 90% of VIN	0.8 V to 90% of VIN	0.8 V to 90% of VIN	0.8 V to 90% of VIN
Number of Outputs	2	2	2	2	2
Compensation	Internal	Internal	Internal	Internal	Internal

Key Differentiators

Dual 2-A output capability in one 14-pin package (vs TPS54183PWP)
Fixed 300-kHz switching with internal compensation (vs TPS54286PWP)
Cost-optimized for 2-A dual-rail loads (vs TPS54383PWP)

Design Notes

The TPS54283 is supplied in a 14-pin PowerTSSOP with exposed PowerPAD. At 12-V input, 3.3-V/2-A output per channel, total loss can exceed 4 W. Solder the PowerPAD to a large ground-plane copper area (at least 1 in² per channel equivalent) and add thermal vias under the pad to reduce theta_JA. Without proper thermal design, junction temperature may exceed the recommended limit at high ambient.

Place a 10-uF ceramic input capacitor near the VIN pins and a 0.1-uF BOOT capacitor close to BOOT/SW for the high-side gate drive. Use a Schottky diode rated for at least 3 A and low forward voltage, with the diode cathode close to the SW pin and anode to GND. Keep the SW node compact and away from the feedback/sense traces to reduce noise coupling.

Do not exceed 28 V on VIN, and remember the maximum output voltage is 90% of VIN, not rail-to-rail. The outputs are adjustable with an external resistor divider; use 1% resistors. Because the converter is non-synchronous, omitting the external Schottky diode will cause high dissipation and possible damage. Always verify component ratings at the actual peak inductor current.