TS1910A 680kHz/1.2MHz High Voltage Boost Converter SOP-8EP Pin Definition: 1. COMP 8. SS 2. FB 7. FREQ 3. EN 6. VCC 4. GND 5. LX General Description The TS1910A is a high performance, high efficiency step up DC-DC Converter with integrated 2A. The TS1910A converter input voltage ranging from 2.6 to 5.5V. The Output voltage can be set up to 27V. The selectable frequency of 680kHz and 1.2MHz allows the use of small external inductors and capacitors and provides fast transient response. Current mode control with external compensation network makes it easy to stabilize the system and keep maximum flexibility. Programmable soft start function minimizes impact on the input power system. Internal power MOSFET with very low RDS(ON) provides high efficiency. The TS1910A automatically transits from PWM to PFM during light load condition further increasing efficiency. The converter also provides protection functions such as Current Limit and Thermal shutdown. 2.6V to 5.5V operating input voltage range Digital Still Cameras Adjustable output voltage range up to 27V Portable Electronics Up to 3A output switch current PDA’s and Palm-Top Computers 680K/1.2MHz Selectable Switching Frequency Local Boost Regulator Programmable soft-start function External Compensation Network Current limit and Thermal shutdown protection Under voltage Lockout Ordering Information Part No. Note: “G” denotes for Halogen Free Absolute Maximum Rating Parameter Power Dissipation Storage Temperature Range Operating Junction Temperature Range Thermal Resistance from Junction to case Thermal Resistance from Junction to ambient θJA 40 ° C/W Note: θJA is measured with the PCB copper area of approximately 1.5 in2(Multi-layer). That copper area needs connect to exposed pad.

TS1910A 680kHz/1.2MHz High Voltage Boost Converter Electrical Specifications (Ta = 25oC, VIN=5V, EN=VIN, IL=0A unless otherwise noted) Characteristics Symbol Conditions Min Typ Input Voltage range Step-Up Voltage Adjust Range Operating quiescent current Shutdown current Feedback Voltage Under Voltage Lockout UVLO Hysteresis FB Input Leakage Current Line Regulation Load Regulation Oscillator frequency FREQ high-level input voltage FREQ low-level input voltage FREQ input leakage current Soft Start Current N-channel MOSFET current limit MOSFET on-resistance (Note) EN high-level input voltage EN...

TS1910A 680kHz/1.2MHz High Voltage Boost Converter Block Diagram Soft Start Thermal Shutdown Enable/ Disable Summing Comparator Control and Driver Logic FREQ SGND Current Sense Slope Compensation Compensation Pin Feedback Pin Enable Pin Ground Pin Switch Output Pin Power Input pin Frequency select pin. The power switch operates at 680kHz if FREQ is connected to GND and at 1.2MHz if FREQ is connected to VCC Soft start Pin. Connect a capacitor to GND

TS1910A 680kHz/1.2MHz High Voltage Boost Converter Application Circuit FREQ=High (Frequency=1.2MHz)

TS1910A 680kHz/1.2MHz High Voltage Boost Converter Compensation Table Frequency(Hz) Application Information Setting the Output Voltage Application circuit item shows the basic application circuit with TS1910A adjustable output version. The external resistor sets the output voltage according to the following equation: VOUT=1.238V x (1+R2/R8) For most applications, R8 is a suggested a value by 10~30KΩ. Place the resistor-divider as close to the IC as possible to reduce the noise sensitivity. Soft Start Capacitor The soft-start function begins from SS pin Voltage=0V to VCC with a 7uA (typ.) constant...

TS1910A 680kHz/1.2MHz High Voltage Boost Converter Application Information (Continue) Under Voltage Lockout (UVLO) To avoid mis-operation of the device at low input voltages an under voltage lockout is included that disables the device, if the input voltage falls below (2.35V-150mV). Input Capacitor Selection For better input bypassing, low-ESR ceramic capacitors are recommended for performance. Two parallel 10uF (or one 22uF) input capacitor is sufficient for most applications. For a lower output power requirement application, this value can be decreased. Output Capacitor Selection For lower...

TS1910A 680kHz/1.2MHz High Voltage Boost Converter

TS1910A 680kHz/1.2MHz High Voltage Boost Converter Notice Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, to any intellectual property rights is granted by this document. Except as provided in TSC’s terms and conditions of sale for such products, TSC assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or...