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UA78M33CDCY The Texas Instruments UA78M33CDCY is a positive-voltage linear regulator providing a fixed 3.3V output at up to 500mA. It features built-in thermal protection and short-circuit current limiting.
Mfr Part #:

UA78M33CDCY

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UA78M33CDCY is a positive-voltage linear regulator providing a fixed 3.3V output at up to 500mA. It features built-in thermal protection and short-circuit current limiting.
✓ Total Stock: 49 pcs
$ Price Range: $0.28

UA78M33CDCY Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Bristol Electronics ✓
Non-Authorised Inventory information
49 pcs
On Request
49 pcs On Request 1 On Request On Request 2026-02-25 06:16:38 On Request 2026-05-08 03:16:37
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

UA78M33CDCY Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Current
Halogen Free
Industrial Grade
Medical Grade
Military Grade
Mounting Type
Number of Regulators
Operating Temperature
Output Configuration
Output Type
PSRR
Protection Features
Quiescent Current
SVHC Present
Supplier Device Package
Supplier Package
Voltage
Voltage Dropout (Max)
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UA78M33CDCY Description

Short technical summary and product information.

The UA78M33CDCY from Texas Instruments is a fixed-voltage integrated-circuit linear voltage regulator designed for a wide range of applications. It delivers a stable 3.3V output with an output current capability of up to 500mA.

 

Key electrical specifications include an input voltage range of 5.3V to 35V (as per datasheet) and a typical quiescent current of 4.5mA. The regulator incorporates built-in protection features such as short-circuit current limiting and thermal shutdown, enhancing device reliability under overload conditions. It is designed for stable operation without external components.

 

This device is available in a SOT-223 surface-mount package, making it suitable for space-constrained designs. The operating temperature range is 0°C to 125°C. Applications include on-board charging, residential lighting, and battery backup units.

UA78M33CDCY Quick Information

Product Type: Linear Voltage Regulator
Series: UA78M
Canonical Name: UA78M33CDCY Positive-Voltage Linear Regulator
Subcategory: Positive-Voltage Linear Regulator

UA78M33CDCY Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: No

UA78M33CDCY Estimated Pricing

Qty Low High
1+ $0.28 $0.28

Estimated market price range - modelled values for guidance only, not live distributor offers.

UA78M33CDCY Features

  • Fixed 3.3V output voltage.
  • Up to 500mA output current.
  • Built-in short-circuit protection.
  • Built-in thermal protection.
  • SOT-223 surface-mount package.

UA78M33CDCY Applications

  • Suitable for on-board charging.
  • Used in residential lighting.
  • Applicable for battery backup units.
  • Designed for air conditioner outdoor units.

UA78M33CDCY FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range?

5.3V to 35V.

What is the output voltage?

Fixed 3.3V.

What is the maximum output current?

500mA.

What is the dropout voltage?

2V typical at 350mA load.

What package is the UA78M33CDCY available in?

SOT-223-4 surface mount package.

What is the operating temperature range?

0°C to 125°C.

What protection features does it have?

Over current, over temperature, and short circuit protection.

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