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78ST205HC The 78ST205HC is a 2A positive step-down integrated switching regulator from Texas Instruments. It delivers a fixed 5V output from an 8V to 20V input range in a compact SIP-3 package.
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78ST205HC

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The 78ST205HC is a 2A positive step-down integrated switching regulator from Texas Instruments. It delivers a fixed 5V output from an 8V to 20V input range in a compact SIP-3 package.
Total Stock: 216 pcs

78ST205HC Available from 1 distributor

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78ST205HC Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Current
Efficiency
Features
Height
Input Voltage Range
Length
Line Regulation
Load Regulation
Mechanical Shock
Mechanical Vibration
Mounting Type
Number of Outputs
Operating Temperature
Output Current (Maximum @ Over Vin range)
Output Current (Minimum @ Over Vin range, reduced spec)
Output Voltage - Nominal
Output Voltage Tolerance
Package / Case
Ripple & Noise
Storage Temperature
Switching Frequency
Tape & Reel
Thermal Resistance
Transient Response
Type
Voltage
Weight
Width

78ST205HC Description

Short technical summary and product information.

The 78ST205HC is a member of the 78ST200 series of wide input voltage, 3-terminal Integrated Switching Regulators (ISRs) from Texas Instruments (formerly Power Trends). It is a non-isolated point-of-load (PoL) module designed to deliver a fixed 5V output at up to 2A of continuous current.

 

Key electrical specifications include an input voltage range of 8V to 20V, typical output voltage tolerance of ±1%, line regulation of ±0.4% typical, and load regulation of ±0.2% typical. The device achieves up to 82% typical efficiency at 9V input and 2A load. Ripple and noise are typically 1% of output voltage, and transient response to a 50% load change is 100µs with a 100µF output capacitor.

 

The module is packaged in a 3-SIP (Single In-line Package) with a through-hole, right-angle mounting option (H suffix). It includes built-in over-temperature and short-circuit protection. The device operates over a junction temperature range of -40°C to +85°C and is suitable for commercial ITE (Information Technology Equipment) applications.

78ST205HC Quick Information

Product Type: DC DC Converter
Series: 78ST200
Canonical Name: 78ST200 Series 2A Positive Step-Down Integrated Switching Regulator
Subcategory: Step-Down (Buck) Converter

78ST205HC Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

78ST205HC Features

  • Fixed 5V output from 8-20V input.
  • Maximum continuous output current of 2A.
  • 82% typical efficiency at 9V input.
  • Built-in over-temperature and short-circuit protection.
  • Compact 3-SIP through-hole packaging.

78ST205HC Applications

  • Ideal for point-of-load regulation in systems.
  • Suitable for commercial ITE equipment designs.
  • Used where wide input voltage range is required.
  • Applicable for 5V bus conversion from higher rails.

78ST205HC FAQs

7 frequently asked questions generated from this part’s specifications.
What is the output voltage of the 78ST205HC?

The output voltage is 5V nominal.

What is the maximum output current?

The maximum output current is 2A.

What is the input voltage range?

The input voltage range is 8V to 20V for the 5V output version.

What is the operating temperature range?

The operating temperature range is -40°C to +85°C.

What package and mounting type does the 78ST205HC use?

It uses a 3-SIP module with through-hole, right-angle mounting.

What are the typical efficiency and switching frequency?

Typical efficiency is 82% at 9V input and 2A load; typical switching frequency is 1MHz.

Does the 78ST205HC have built-in protection?

Yes, it includes over-temperature protection (OTP) and short-circuit protection (SCP).

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