L78L12ABZ
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STMicroelectronics L78L12ABZ

Manufacturer No:
L78L12ABZ
Manufacturer:
STMicroelectronics
Package:
Bulk
Description:
IC REG LINEAR 12V 100MA TO92-3
Delivery:
Payment:
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Product Introduction

Overview

The L78L12ABZ is a three-terminal positive voltage regulator from STMicroelectronics. It is part of the L78L series, which is known for its robust design, featuring internal current limiting and thermal shutdown, making these regulators essentially indestructible. This component is designed to provide a stable output voltage of 12V and can be used as a replacement for Zener diode/resistor combinations, offering improvements such as lower quiescent current and lower noise.

Key Specifications

Parameter Test Conditions Min. Typ. Max. Unit
Output Voltage (VO) TJ = 25 °C 11.1 12 12.9 V
Output Current (IO) Up to 100 mA mA
Line Regulation (∆VO) VI = 14.5 to 27 V, TJ = 25 °C 250 mV
Load Regulation (∆VO) IO = 1 to 100 mA, TJ = 25 °C 100 mV
Quiescent Current (Id) TJ = 25 °C 6.5 mA
Output Noise Voltage (eN) B = 10 Hz to 100 kHz, TJ = 25 °C 80 µV
Supply Voltage Rejection (SVR) VI = 15 to 25 V, f = 120 Hz, IO = 40 mA, TJ = 25 °C 37 42 dB
Dropout Voltage (Vd) 1.7 V

Key Features

  • Internal current limiting and thermal shutdown for enhanced reliability and protection.
  • No external components required for operation.
  • Low quiescent current and low noise output.
  • Available in various output voltages, including 12V for the L78L12ABZ model.
  • Short-circuit protection and thermal overload protection.
  • Can be used as a replacement for Zener diode/resistor combinations.
  • Compact packaging options including TO-92, SO-8, and SOT-89.

Applications

The L78L12ABZ is suitable for a wide range of applications, including:

  • Local or on-card voltage regulation to eliminate noise and distribution problems associated with single-point regulation.
  • Use with power pass elements to create high-current voltage regulators.
  • General-purpose voltage regulation in electronic devices.
  • Replacement for Zener diode/resistor combinations in existing designs.

Q & A

  1. What is the output voltage of the L78L12ABZ?

    The output voltage of the L78L12ABZ is 12V.

  2. What is the maximum output current of the L78L12ABZ?

    The maximum output current is up to 100 mA.

  3. Does the L78L12ABZ require external components for operation?

    No, the L78L12ABZ does not require external components for operation.

  4. What are the key protection features of the L78L12ABZ?

    The key protection features include internal current limiting, thermal shutdown, and short-circuit protection.

  5. What are the typical quiescent current and output noise voltage of the L78L12ABZ?

    The typical quiescent current is 6.5 mA, and the output noise voltage is 80 µV.

  6. What is the dropout voltage of the L78L12ABZ?

    The dropout voltage is 1.7 V.

  7. Can the L78L12ABZ be used as a replacement for Zener diode/resistor combinations?
  8. What are the available packaging options for the L78L12ABZ?

    The available packaging options include TO-92, SO-8, and SOT-89.

  9. What are some common applications of the L78L12ABZ?

  10. What is the supply voltage rejection of the L78L12ABZ?

    The supply voltage rejection is typically 37 to 42 dB.

Product Attributes

Output Configuration:Positive
Output Type:Fixed
Number of Regulators:1
Voltage - Input (Max):35V
Voltage - Output (Min/Fixed):12V
Voltage - Output (Max):- 
Voltage Dropout (Max):- 
Current - Output:100mA
Current - Quiescent (Iq):6 mA
Current - Supply (Max):6.5 mA
PSRR:42dB (120Hz)
Control Features:- 
Protection Features:Over Current, Over Temperature, Short Circuit
Operating Temperature:-40°C ~ 125°C
Mounting Type:Through Hole
Package / Case:TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package:TO-92-3
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Similar Products

Part Number L78L12ABZ L78L12ACZ L78L15ABZ
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics
Product Status Active Active Obsolete
Output Configuration Positive Positive Positive
Output Type Fixed Fixed Fixed
Number of Regulators 1 1 1
Voltage - Input (Max) 35V 35V 35V
Voltage - Output (Min/Fixed) 12V 12V 15V
Voltage - Output (Max) - - -
Voltage Dropout (Max) - - -
Current - Output 100mA 100mA 100mA
Current - Quiescent (Iq) 6 mA 6 mA 6 mA
Current - Supply (Max) 6.5 mA 6.5 mA 6.5 mA
PSRR 42dB (120Hz) 42dB (120Hz) 39dB (120Hz)
Control Features - - -
Protection Features Over Current, Over Temperature, Short Circuit Over Current, Over Temperature, Short Circuit Over Current, Over Temperature, Short Circuit
Operating Temperature -40°C ~ 125°C 0°C ~ 125°C -40°C ~ 125°C
Mounting Type Through Hole Through Hole Through Hole
Package / Case TO-226-3, TO-92-3 (TO-226AA) TO-226-3, TO-92-3 (TO-226AA) TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package TO-92-3 TO-92-3 TO-92-3

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