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LT3495EDDB-TRPBF Datasheet(PDF) 1 Page - Linear Technology |
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LT3495EDDB-TRPBF Datasheet(HTML) 1 Page - Linear Technology |
1 / 16 page LT3495/LT3495B/ LT3495-1/LT3495B-1 1 3495b1b1f TYPICAL APPLICATION FEATURES APPLICATIONS DESCRIPTION 650mA/350mA Micropower Low Noise Boost Converter with Output Disconnect The LT®3495/LT3495B/LT3495-1/LT3495B-1 are low noise boost converters with integrated power switch, feedback resistor and output disconnect circuitry. The parts control power delivery by varying both the peak inductor current and switch off-time. This novel* control scheme results in low output voltage ripple as well as high efficiency over a wide load range. For the LT3495/LT3495-1, the off-time of the switch is not allowed to exceed a fixed level, guaranteeing the switching frequency stays above the audio band for the entire load range. The parts feature a high performance NPN power switch with a 650mA and 350mA current limit for the LT3495/LT3495B and LT3495-1/LT3495B-1 respectively. The quiescent current is a low 60μA, which is further reduced to 0.1μA in shut- down. The internal disconnect circuitry allows the output voltage to be isolated from the input during shutdown. An auxiliary reference input (CTRL pin) overrides the internal 1.235V feedback reference with any lower value allowing full control of the output voltage during operation. The LT3495 series are available in a tiny 10-lead 3mm × 2mm DFN package. OLED Power Supply from One Li-Ion Cell n Low Quiescent Current 60μA in Active Mode 0.1μA in Shutdown Mode n Low Noise Control Scheme (Switching Frequency Always Stays Above Audible Range for LT3495/-1) n Integrated Power NPN: 650mA Current Limit (LT3495/B) 350mA Current Limit (LT3495-1/B-1) n Integrated Output Disconnect n Integrated Output Dimming n Wide input range: 2.3V to 16V n Wide output range : Up to 40V n Integrated feedback resistor n Tiny 10-Lead 3mm × 2mm DFN Package n OLED Power n Low Noise Power n MP3 Player Output Voltage Ripple vs Load Current Efficiency vs Load Current L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. *Patent pending. LOAD CURRENT (mA) 0 50 40 20 30 10 0 1 3495 TA01b 100 10 1.0μF 0603 CAPACITOR AT VOUT 2.2μF 1206 CAPACITOR AT VOUT SW CAP VCC SHDN CTRL VOUT FB GND 909k 3495 TA01a LT3495 4.7μF 1μF 10μH 2.2μF ONE Li-Ion CELL VOUT 16V 70mA LOAD CURRENT (mA) 3495 TA01c 90 80 50 60 70 40 400 320 80 160 240 0 0.1 10 100 1 VIN = 3.6V LOAD FROM CAP LOAD FROM VOUT |
Similar Part No. - LT3495EDDB-TRPBF |
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Similar Description - LT3495EDDB-TRPBF |
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