TS33003 Datasheet | SEMTECH

Features - Fixed Output option has automatic low power PFM mode for reduced quiescent current at light loads - 5MHz +/- 10% fixed switching frequency - Fixed output voltages: 0.8V, 0.9V, 1.2V, 1.5V, 1.8V, - 2.5V, and 3.3V with +/- 2% output tolerance - Input voltage range: 2.5V to 5.5V - Voltage mode PWM control with input voltage feed- Forward pensation - Voltage supervisor for VOUT reported at the PG pin - Input supply under voltage lockout - Soft start for controlled startup with no overshoot - Full protection for over-current, over-temperature, - and VOUT overvoltage - Less than 200n A in shutdown mode - Multiple enable pins for flexible system sequencing - Low external ponent count - Junction operating temperature -40C to 125C - Packaged in a 16 pin QFN (3x3) Applications - Point of load - Systems with deep submicron ASICs/FPGAs - Set-top box - munications equipment - Portable and handheld equipment TS33001/2/3 High Efficiency Synchronous 1/2/3A DC/DC Buck Converter, 5Mhz Description The TS33001/2/3 (1/2/3A) are DC/DC synchronous switching regulators with fully integrated power switches, internal pensation, and full fault protection. The switching frequency of 5MHz enables the use of extremely small filter ponents, resulting in smaller board space and reduced BOM costs. When the input current is greater than approximately 50m A, the TS33001/2/3 utilizes PWM voltage mode feedback with input voltage feed-forward to provide a wide input voltage range without the need for external pensation. When the input current is less than 50m A, the device uses a PFM mode to provide increased efficiency at light loads. The cross over between PFM mode and PWM is automatic and has hysteresis to prevent oscillation between the modes. Additionally, the n LP mode pin can be used to force the device into PWM mode to reduce the output ripple, if needed. The TS33001/2/3 integrates a wide range of protection circuitry; including input supply under-voltage lockout, output undervoltage,...