S-812C57AMC-C3LT2G

Current - Output:	75mA
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	--
Control Features:	--
PSRR:	--
Current - Supply (Max):	2.5µA
Current - Quiescent (Iq):	500nA
Series:	S-812C
Voltage Dropout (Max):	0.23V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5.7V
Voltage - Input (Max):	16V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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Introduction

The S-812C57AMC-C3LT2G is a monolithic, 4-phase step-down DC-DC regulator IC that offers high efficiency and low power consumption in applications that require the conversion of high input voltage to various lower-voltage output power supplies. This innovative product gives system designers a user-friendly, easy to use solution that delivers superior performance in a wide variety of applications.

Application Field

The S-812C57AMC-C3LT2G is a highly integrated, low-noise, 4-phase step-down DC-DC regulator IC, ideal for applications such as Automotive Processor, Industrial Motor and Process Control, and Advanced LCD applications that require the conversion of high input voltage to multiple lower voltage outputs.This device is designed to provide excellent efficiency and consistent output current and voltage stability over a wide temperature range. This product also offers fast transient response, tight output voltage regulation, and an integrated current limit, making it suitable for a wide range of commercial, consumer, and industrial applications.

Working Principle

The S-812C57AMC-C3LT2G uses a 4-phase architecture, where each phase is independently controllable and provides a much higher output current and efficiency than a single-phase converter. The IC consists of two main parts: a main control circuit and four PWM/PFM/PFM+ converters.The main control circuit is responsible for operating all the 4-phase converters in a predefined sequence and for controlling the switching frequency. It processes a number of input signals and feedback cycles in order to provide precise, stable and reliable output current and voltage level.The 4-phase converters use a switching topology with one high side and one low side MOSFET. The conduction loss of the MOSFET is minimized by using a pulse modulated switching pattern, which also reduces the size of the inductor by distributing the current among all the phases.The S-812C57AMC-C3LT2G offers the flexibility of adaptive dual-mode PFM/PWM operation. This intelligent operation makes the IC particularly attractive for applications operating over a range of load currents.

Conclusion

The S-812C57AMC-C3LT2G is an advanced 4-phase DC-DC regulator IC, designed for applications that require the conversion of high input voltage to various lower-voltage output power supplies. It is capable of delivering ultra-low-noise, high efficiency and consistent voltage and current stability over a wide temperature range. The product also offers fast transient response and tight output voltage regulation. Its user-friendly design and rich feature set make the IC an ideal choice for a wide range of applications, such as Automotive Processor, Industrial Motor and Process Control, and Advanced LCD applications.

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