Panasonic AN8041S free download

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Voltage Regulators AN8041S Liquid crystal backlight control IC s Overview The AN8041S is an inverter control IC for liquid crystal backlight using PWM method. The output voltage of DC-DC converter and the current of cathode-ray tube can be controlled by using two error amplifiers, so that the system is designed easily. Since the n-channel MOSFET can be directly driven, it is possible to construct a highly effective power supply. 10.1±0.3 16 9 Unit: mm 4.2±0.3 6.5±0.3 (0.15) 0.3 1 8 1.5±0.2 (0° to 10°) s Features · Operating supply voltage: 3.6 V to 34 V * 1.27 0.40±0.25 (0.605) · Totem pole output circuit: Output current of ±500 mA Seating plane · Built-in bootstrap circuit · N-channel power MOSFET can be directly driven SOP016-P-0225A · Built-in two error amplifier circuits allow both the voltage and current control · Incorporating on/off functions (active-high control input, standby mode current is 5 µA or less) · Built-in timer latch short-circuit protection circuit · Maximum oscillation frequency: 500 kHz 0.1±0.1 Seating plane Note) *: The voltage is limited to the range of 3.6 V to 17 V if used in a step-down circuit. s Applications · LCD displays, digital still cameras, and PDAs VREF DTC s Block Diagram 1 4 3 2 VREF 2.57 V Off 16 On/off active-high R S R S.C.P. 5 S Q Q Constant current source OSC Bootstrap 15 VCC CT RT 14 13 8 6 PWM comp. CB Out FB1 IN+1 IN-1 FB2 IN+2 IN-2 U.V.L.O. Latch Q S.C.P. comp. Error amp. 1 7 9 11 Error amp. 2 GND 12 10 1 AN8041S s Pin Descriptions Pin No. Symbol 1 2 VREF RT Description Reference voltage output pin Pin for connecting oscillator timing resistor 3 CT Pin for connecting oscillator timing capacitor 4 5 DTC S.C.P. Dead-time control pin Pin for connecting the time constant setting capacitor for short-circuit protection 6 IN+1 Error amplifier 1 noninverted input pin Pin No. Symbol 7 8 9 10 11 12 13 14 15 16 IN-1 FB1 FB2 IN-2 IN+2 GND Out CB VCC Off Voltage Regulators Description Error amplifier 1 inverted input pin Error amplifier 1 output pin Error amplifier 2 output pin Error amplifier 2 inverted input pin Error amplifier 2 noninverted input pin Grounding pin Output pin Bootstrap output circuit Power supply voltage application pin On/off control pin s Absolute Maximum Ratings Parameter Supply voltage Off terminal application voltage Error amplifier input voltage DTC terminal application voltage Out terminal application voltage CB terminal application voltage Out terminal constant output current Out terminal peak output current Power dissipation * * Symbol VCC VOFF VI VDTC VOUT VCB IO IO(PEAK) PD Topr Tstg Rating 35 35 - 0.3 to VREF - 0.3 to VREF 35 35 ±100 ±500 143 -30 to +85 -40 to +125 Unit V V V V V V mA mA mW °C °C Operating ambient temperature Storage temperature * Note) *: Expect for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C. s Recommended Operating Range Parameter Supply voltage (when using step-down circu