L9777A

Description：IC REG LIN POS ADJ 600MASSO-12
Series：-
Mfr：STMicroelectronics
Package：Tube

SKU:39cacf467dc1 Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

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Product introduction

Product Detailed Parameters

Description：IC REG LIN POS ADJ 600MASSO-12
Series：-
Mfr：STMicroelectronics
Package：Tube
Output Configuration：Positive
Output Type：Adjustable
Number of Regulators：1
Voltage - Input (Max)：31V
Voltage - Output (Min/Fixed)：4.9V
Voltage - Output (Max)：5.1V
Voltage Dropout (Max)：0.4V @ 200mA
Current - Output：600mA
Current - Quiescent (Iq)：220 µA
Current - Supply (Max)：-
PSRR：55dB (100Hz)
Control Features：-
Protection Features：Over Current, Over Temperature, Short Circuit
Operating Temperature：-40°C ~ 150°C (TJ)
Mounting Type：Surface Mount
Package / Case：12-LSOP (0.154", 3.90mm Width) Exposed Pad
Supplier Device Package：PowerSSO-12
Grade：-
Qualification：-

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L9777A

Overview

The L9777A is a monolithic integrated low-drop regulator designed for automotive microprocessor systems. It supplies up to 200 mA and operates within a DC supply voltage range of 5.6 V to 31 V. The device features low current consumption of 110 μA typical at zero output load and high precision output voltage with 2% accuracy. It includes a VDD tracking regulator switchable via the VDD_EN pin, a reset circuit sensing down to 1 V, and adjustable reset thresholds. Protection functions cover overload, short circuit, and over-temperature conditions, supporting a junction temperature range from -40 °C to 150 °C.

Feature Summary

Monolithic low-drop regulator architecture optimized for severe automotive operating conditions
Integrated protection mechanisms against overload, short circuit, and over-temperature events
Configurable reset circuitry with double reset function and adjustable threshold levels
VDD tracking regulator controllable via external enable pin for power management

Applications

Microprocessor system power supply in automotive electronics
Automotive engine control units requiring robust voltage regulation
Applications demanding regulated voltage under severe thermal and electrical stress

Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors or certified partners. Confirm the specific suffix matches the required package and temperature grade. Review the official datasheet for latest revision details and compliance documentation. Ensure design-in compatibility with existing automotive standards before procurement.

Selection Notes

Select this component when a single-channel 200 mA LDO with automotive-grade reliability is required. Consider the PowerSSO-12 package constraints for thermal dissipation. Evaluate the need for VDD tracking and reset functionality versus simpler regulator alternatives. Verify input voltage stability within the 5.6 V to 31 V range for target application.

Part Context

The L9777A belongs to the L9777 family of low-power voltage regulators manufactured by STMicroelectronics. It is part of a series designed specifically for automotive applications, sharing core architectural features with variants like the L9777B. The family emphasizes integration of protection circuits and precise regulation for microprocessor support in harsh environments.