CS5112YDWFR24G Description
The CS5112 is a dual-output power supply integrated circuit. It contains a 5.0 V土2%。100 mA linear regulator, a watchdog timer, a linear output voltage monitor to provide a Power On Reset (POR), and a 1.4 A current mode PWM switching regulator. The 5.0 V linear regulator is comprised of an error amplifier, reference. and supervisory functions. It has a low internal supply current consumption and provides a 1.2 V (typical) dropout voltage at maximum load current.
The watchdog timer circuitry monitors an input signal (WDI) from the microprocessor. It responds to the falling edge of this watchdog signal. If a correct watchdog signal is not received within the externally programmable time, a reset signal is issued.
The externally programmable active reset circuit operates correctly for an output voltage (VLAN) as 1ow as 1.0 V. During power up, or if the output voltage shifts below the regulation limit, RESET toggles low and remains low for the duration of the delay after proper output voltage regulation is restored. Additionally, a reset pulse is issued if the correct watchdog is not received within the programmed time. Reset pulses continue until the correct watchdog signal is received. The reset pulse width and frequency. as well as the Power On Reset delay, is set by one external RC network.
CS5112YDWFR24G Features
Linear Regulator
5.0V士2%@100mA
Switching Regulator
14 A Peak Internal Switch
120 kHz Maximum Switching Frequency
5.0V to 26 V Operating Supply Range
Smart Functions
Watchdog
RESET
ENABLE
Protection
Overtemperature
Current Limit
Internally Fused Leads in a SOIC Package
Pb-Free Packages are Available
