ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 100MA 8-SOIC
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：30V
- Voltage - Output (Min/Fixed)：3.3V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- Current - Output：100mA
- Current - Quiescent (Iq)：5.5 mA
- Current - Supply (Max)：6 mA
- PSRR：49dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：0°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
Download product information
Overview
The L78L33ACD is a three-terminal positive linear voltage regulator from the STMicroelectronics L78L series, housed in an SO-8 surface-mount package. It provides a fixed output voltage of 3.3 V with a maximum continuous output current of 100 mA. The device accepts input voltages up to 30 V and operates within a junction temperature range of 0°C to 125°C. Key electrical specifications include a typical quiescent current of 6 mA, a dropout voltage of 1.7 V, and a supply voltage rejection ratio of 49 dB at 120 Hz.
Feature Summary
- Integrated thermal overload protection and short-circuit current limiting for robust operation
- Requires no external components for basic fixed-voltage regulation applications
- Offers ±4% output voltage tolerance for precise power delivery
Applications
- Local or on-card voltage regulation
- Replacement for Zener diode and resistor combinations
- Power pass element integration for high-current regulators
Procurement Notes
Verify the specific suffix 'D' corresponds to the SO-8 package configuration required for your design. Confirm that the AC designation matches the necessary ±4% voltage accuracy tolerance. Ensure the component meets RoHS compliance standards if applicable to your manufacturing requirements.
Selection Notes
Select this component when a compact surface-mount solution is needed for low-to-moderate current regulation. The SO-8 package facilitates automated assembly while providing adequate thermal dissipation capabilities compared to smaller packages. Consider the 1.7 V dropout voltage when determining the minimum required input voltage headroom.
Part Context
This part belongs to the L78Lxx family of three-terminal positive regulators designed for general-purpose applications. The series includes various fixed output voltages and packaging options such as TO-92 and SOT-89. The L78L33 variant specifically targets 3.3 V logic and sensor power supplies.
Replacement Considerations
Direct pin-compatible replacements may exist from other manufacturers offering equivalent 3.3V/100mA specifications in SO-8 packages. Verify thermal resistance values and electrical characteristics against the original datasheet before substitution.
