Pin Definition: 1. EN 8. NC 2. Vcc 7. GND 3. FB 6. Gate 4. SS 5. Sense General Description The TS19375 is high efficient PWM step-up controller. Designed to drive an external N-channel MOSFET, Output voltage is programmable with 1.0V of standard voltage supply internal, and using externally connected components, output voltage (FB) can be set up at will. The TS19375 can be operated at switching frequencies of 500kHz allowing for easy filtering and low noise, the size of the external components can be reduced. An enable function and thermal shutdown functions are built inside. The soft-start time can be programmed by outside capacitor; the function prevents overshoot at startup. Ordering Information Input voltage range 3V ~ 24V Output voltage: Define by N-CH MOSFET Duty ratio: 0% ~ 85% PWM control Soft-start time programmed by external capacitor Thermal shutdown protection LED Panel Display Backlighting Internal current limit PDA and Portable Media Players Local Boost Regulator Note: “G” denotes for Halogen Free Typical Application Circuit

TS19375 PWM Step-Up Controller Absolute Maximum Rating Characteristics VCC VFB VEN VSENSE VSS VGATE PD TSTG TOPJ VOP θJC θJA VCC Pin Voltage Feedback Pin Voltage EN Voltage SENSE Voltage SS Pin Voltage Gate Pin Voltage Power Dissipation Storage Temperature Range Operating Junction Temperature Range Operating Supply Voltage Thermal Resistance from Junction to case Thermal Resistance from Junction to ambient Note: Stresses exceed those rating may damage the device Electrical Specifications (TA=25oC, VIN=5V, VOUT=12V unless otherwise noted) Characteristics Feedback Voltage Quiescent Current Feedback...

TS19375 PWM Step-Up Controller Block Diagram Vcc Phase Compensation Buffer Driver Thermal Shutdown Pin Function Description Pin NO. Pin Name Shutdown Control Input H: Normal Operation L: Shutdown Mode Gate drive for external N-CH MOSFET Current Limit Sense Voltage

TS19375 PWM Step-Up Controller Function Description PWM Control The TS19375 is high efficient PWM step-up controller, the pulse width varies in a range from 0 to 85%. According to the load current, the ripple voltage produced by the switching can easily be removed through a filter because the switching frequency remains constant. Therefore, TS19375 provide a low-ripple power over broad ranges of input voltage and load current. Setting the Output Voltage Application circuit shows the basic application circuit with adjustable output version. The external resistor sets the output voltage according...

TS19375 PWM Step-Up Controller Function Description (Continue) Input Capacitor Selection The input capacitor reduces the surge current drawn from the input and switching noise from the device. The input capacitor impedance at the switching frequency shall be less than input source impedance to prevent high frequency switching current passing to the input. A low ESR input capacitor sized for maximum RMS current must be used. The capacitor voltage rating should be at least 1.5 times greater than the input voltage, and often much higher voltage ratings are needed to satisfy. Output Capacitor Selection...

Marking Diagram Y = Year Code M = Month Code for Halogen Free Product (O=Jan, P=Feb, Q=Mar, R=Apl, S=May, T=Jun, U=Jul, V=Aug, W=Sep, X=Oct, Y=Nov, Z=Dec) L = Lot Code

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