STMicroelectronics L78L05ABD13TR

View All Display Drivers by STMicroelectronics

Part Number:
L78L05ABD13TR
Manufacturer:
STMicroelectronics
Category:
Display Drivers
RoHs:
RoHS Compliant
Datasheet:
Description:
Linear Voltage Regulator IC Positive Fixed 1 Output 100mA 8-SOIC
In stock 29,017

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Specifications

Type

Paramete

Type

Paramete

PSRR

49dB (120Hz)

Control Features

Voltage - Output (Max)

Current - Supply (Max)

6 mA

Number of Regulators

Protection Features

Over Current, Over Temperature, Short Circuit

Voltage Dropout (Max)

Supplier Device Package

8-SOIC

Mounting Type

Surface Mount

Operating Temperature

-40°C ~ 125°C

Voltage - Input (Max)

30V

Current - Quiescent (Iq)

5.5 mA

Output Configuration

Positive

Package / Case

8-SOIC (0.154", 3.90mm Width)

Voltage - Output (Min/Fixed)

Mfr

STMicroelectronics

Output Type

Fixed

Current - Output

100mA

Base Product Number

L78L05

Overview

Specification Sheet: Model L78L05ABD13TR Positive Voltage Regulator

Basic Information

Product Category: Fixed Positive Voltage Regulator (Three-Terminal Integrated)
Brand: STMicroelectronics
Series: L78L Series
Output Voltage: 5V (fixed)
Package Type: SO-8
Marking on Package: 78L05B
Environmental Compliance: Lead-Free Package (consistent with post-2004 environmental standards)
Document Reference: Datasheet DS0424 - Rev 30 (August 2024)

Core Electrical Specifications (Typical Conditions: TJ=25∘C, VIN=10V, IO=40mA, CIN=0.33μF, COUT=0.1μF)

Parameter	Symbol	Test Conditions	Minimum	Typical	Maximum	Unit
Output Voltage	VO	TJ=25∘C	4.8	5.0	5.2	V
Output Voltage	VO	IO=1∼40mA, VIN=7∼20V	4.75	-	5.25	V
Output Voltage	VO	IO=1∼70mA, VIN=10V	4.75	-	5.25	V
Line Regulation	ΔVO	VIN=7.3∼20V, TJ=25∘C	-	-	150	mV
Line Regulation	ΔVO	VIN=8∼20V, TJ=25∘C	-	-	100	mV
Load Regulation	ΔVO	IO=1∼100mA, TJ=25∘C	-	-	60	mV
Load Regulation	ΔVO	IO=1∼40mA, TJ=25∘C	-	-	30	mV
Quiescent Current	Id	TJ=25∘C	-	-	6	mA
Quiescent Current	Id	TJ=125∘C	-	-	5.5	mA
Quiescent Current Change	ΔId	IO=1∼40mA	-	-	0.1	mA
Quiescent Current Change	ΔId	VIN=8∼20V	-	-	1.5	mA
Output Noise Voltage	eN	B=10Hz∼100kHz, TJ=25∘C	-	40	-	µV
Supply Voltage Rejection	SVR	VIN=8∼18V, f=120Hz, IO=40mA	41	49	-	dB
Dropout Voltage	Vd	-	-	2.0	-	V

Absolute Maximum Ratings

Parameter	Symbol	Conditions	Value	Unit
DC Input Voltage	VIN	VO=5V (belongs to 3.3~9V range)	30	V
Output Current	IO	-	100	mA
Power Dissipation	PD	Internally limited (depends on heat-sinking)	-	mW
Storage Temperature Range	TSTG	-	-65 ~ 150	∘C
Operating Junction Temperature Range	TOP	For "AB" grade (L78L05ABD13TR)	-40 ~ 125	∘C

Thermal Characteristics (SO-8 Package)

Parameter	Symbol	Value (Max)	Unit	Note
Thermal Resistance (Junction to Case)	RthJC	20	∘C/W	-
Thermal Resistance (Junction to Ambient)	RthJA	55	∘C/W	Based on 6 cm² copper PCB heat-sink
Package Modification	-	Pins 2, 3, 6, 7 electrically connected to die attach flag	-	Reduces total thermal resistance for better heat dissipation

Package & Mechanical Dimensions (SO-8 Package, Units: mm)

Dimension	Minimum	Typical	Maximum
Package Height (A)	-	-	1.75
Lead Thickness (b)	0.31	-	0.51
Lead Width (c)	0.10	-	0.25
Package Length (D)	4.80	4.90	5.00
Package Width (E)	5.80	6.00	6.20
Lead Pitch (e)	-	1.27	-
Lead Length (L)	0.40	-	1.27
Lead Angle (k)	0°	-	8°

Recommended Footprint

Follow SO-8 standard footprint (Figure 21 in datasheet), with 0.6 mm lead spacing (8 leads total) for PCB layout.

Application Information

Required/Recommended External Components

Input Capacitor (CIN): 0.33μF (mandatory if the regulator is far from the power filter to stabilize input voltage).
Output Capacitor (COUT): 0.1μF (optional for stability, but improves transient response significantly).

Typical Application Scenarios

Network products (e.g., routers, switches)
Optical drives (DVD-ROM, CD-ROM)
Sound cards and computer motherboards
Linear power supplies
Controllers (industrial or consumer electronics)
Local/on-card regulation to reduce noise and distribution issues in single-point regulation systems
High-current voltage regulators (when combined with power pass components)

Usage Precautions

Ensure adequate heat-sinking (e.g., 6 cm² copper PCB area) to avoid exceeding the maximum junction temperature.
Do not exceed the absolute maximum input voltage (30V) to prevent device damage.
The internal current limiting and thermal shutdown features protect against overloads, but external protection circuits are still recommended for high-reliability applications.
Place CIN and COUT as close to the regulator pins as possible to optimize performance.

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