TMI3359

TMI3359 1.5MHz, 30V, 1.2A FPWM Synchronous Step-Down Converter Features Description ⚫ Wide Input Range: 4.5V to 30V The TMI3359 is a high efficiency 1.5MHz, ⚫ Feedback Voltage: 0.8V±2% synchronous step-down DC-DC converter capable ⚫ 1.5MHz Switch Frequency of delivering up to 1.2A current with force PWM ⚫ Up to 1.2A Output Current ⚫ Force Constant Current PWM Operation ⚫ COT control to achieve fast transient operation and adopts COT control with fast transient response performance. TMI3359 integrates both high and low side switch with low RDS(ON) to minimize the conduction loss. Low output responses voltage ripple and small external inductor and ⚫ Integrated internal compensation capacitor size are achieved with 1.5MHz switching ⚫ Stable with Low ESR Ceramic Output frequency. Capacitors The TMI3359 requires a minimum number of ⚫ Over Current Protection with Hiccup Mode readily available standard external components ⚫ Thermal Shutdown and is available in a 6-pin SOT23-6 RoHS ⚫ Inrush Current Limit and Soft Start compliant package. ⚫ Build in Input Over Voltage Protection ⚫ Available in SOT23-6 Package Application ⚫ Security Equipment ⚫ Distributed Power Systems ⚫ Flat Panel Television and Monitors ⚫ Smart Home ⚫ Industrial Power Systems Typical Application Efficiency VOUT=3.3V, IOUT=0.001A to 1.2A, TA=25°C 0.1µF VIN= 4.5V-30V CIN1 CIN2 10µF 100nF L BS IN 4.7µH VOUT= 3.3V LX R3 100kΩ R1 39kΩ Cfb 27pF EN FB GND CO1 R2 12.5kΩ 22µF TMI3359 Typical Application Circuits (VREF=0.8V) TMI and SUNTO are the brands of TOLL microelectronic TMI3359 V1.0 – 2021.04 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% Efficiency C4 5V-3.3V 12V-3.3V 24V-3.3V 0 0.2 0.4 0.6 0.8 Output Current (A) 1 1.2 www.toll-semi.com 1 TMI3359 Absolute Maximum Ratings (Note 1) Parameter Min Max Unit Input Supply Voltage Enable pin, EN LX Voltages LX Voltages (