CS51033GDR8 Integrated Circuits (ICs)

Frequency - Switching:	200kHz
Base Part Number:	CS51033
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	0°C ~ 70°C (TA)
Control Features:	Frequency Control, Soft Start
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	83.3%
Series:	--
Voltage - Supply (Vcc/Vdd):	3 V ~ 16 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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CS51033GDR8 application field and working principle

The CS51033GDR8 is a DC/DC Switching Controller from the PMIC – Voltage Regulator – DC/DC Switching Controllers range. This specific device is mainly used in battery-powered systems, which is also ideally suited for automotive applications, such as battery management.The CS51033GDR8 switching controller is a single integrated component and has been designed to provide optimal efficiency and cost savings for implementers of DC/DC switching power solutions who require low component counts in their assemblies to support high power requirements. The device’s features include:

• 100 KHz to 540 KHz operation frequency.
• Voltage Mode control.
• Pre Biasing output voltage.
• Internal soft start.
• Power Good indicator.
• Thermal Shutdown.
• Dual Mode Slope Compensation.

The CS51033GDR8’s main purpose is to generate power from a DC power source, either from a Battery or from an AC or DC power adapter, to supply a low voltage load. It is capable of converting both lower and higher DC voltages into a precisely regulated lower DC voltage for the load.The CS51033GDR8 works by regulating the amount of current that flows into the load by switching the primary power source on and off. This is known as Pulse Width Modulation (PWM). When the source is switched on, current is allowed to flow; when it is off, no current can flow. By varying the amount of time the source is on and off, the amount of average current that flows into the load can be finely regulated.The CS51033GDR8 also contains an internal soft start circuit. This circuitry improves the power supply\'s start up performance. When the CS51033GDR8 starts up, it works in a very slow and linear manner, ramping up the voltage until it reaches its operating level. This eliminates surges and spikes that can occur during regular startup, thus protecting the load from any damage.The CS51033GDR8 also contains a Power Good indicator. This signal monitors the voltage that is being supplied to the load and sends a signal to the system controller when the voltage drops below the preset level. This prevents any damage that may be caused to the load due to a drop in voltage.Finally, the CS51033GDR8 also contains a Thermal Shutdown circuit. This circuit monitors the temperature of the switching controller and shuts off the power supply when the temperature rises above a preset level. This prevents the device from burning up and keeps the device working in optimal conditions.In conclusion, the CS51033GDR8 is a powerful and efficient DC/DC Switching Controller that is capable of providing a precise and regulated voltage to a low voltage load. Its features help to increase efficiency, and it contains several safety features that prevent damage to both the device and the load.

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