CHL8203-00CRT Datasheet/PDFCHL8203-00CRT is a special purpose voltage regulator, produced by Texas Instruments. This Voltage Regulator is intended for use in applications with very wide supply ranges and tight regulation requirements. It has a tiny size and consistent thermal performance which helps reduce system-level noise and improve reliability in critical applications. The working regimes of this device are self-adjusting so it can be used for a wide range of operating conditions with minimal setup.
This voltage regulator is mainly intended for use in automotive, industrial and consumer markets. It can be used in applications requiring high speed and high-frequency, such as power supplies and point-of-load DC/DC converters. It\'s also used in applications with limited space, such as cell phones and laptops, to provide a precise, low-noise output voltage. CHL8203-00CRT can be used in variable-frequency switching power supplies, automotive multiplex lighting systems, primary-side voltage regulators and gate-driver applications.
The CHL8203-00CRT has two operating modes. In the constant-current mode, the output voltage is controlled by the voltage drop across a sense resistor. This is the precise control of output current in order to protect the power-supply transistor from overcurrent situations and to maintain a stable voltage output. The voltage regulation loop then controls the output voltage by sensing the output voltage.
In the constant-voltage mode, the output voltage is regulated to a reference input. This is achieved by varying the slope of the output current and the voltage drop across the sense resistor. The output voltage can be adjusted through the external voltage sense pin and the internal resistors. The slope-compensation feature keeps the output voltage in regulation even under varying load conditions.
The CHL8203-00CRT is available in a tiny 6-pin MSOP package as well as a larger 12-pin TSSOP package. It can deliver up to 1.5A of output current and includes protection features such as overcurrent and thermal shutdown. The device also includes an input voltage detection module which can be used for power-up sequencing or system diagnostics.
In conclusion, CHL8203-00CRT is a special purpose voltage regulator suitable for a wide range of applications. It has two operating modes, self-adjusting capacity, tiny size and consistent thermal performance, making it an ideal choice for critical applications with very wide supply ranges and tight regulation requirements.