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Unisonic Technologies |
CURRENT MODE PWM CONTROL CIRCUITS *Low external part count. *Low start up current ( Typical 0.12mA ) *Automatic feed forward compensation *Pulse-by-Pulse current limiting *Under-voltage lockout with hysteresis *Double pulse Suppression *High current totem pole output to drive MOSFET |
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Unisonic Technologies |
CURRENT MODE PWM CONTROL CIRCUITS *Low external part count. *Low start up current ( Typical 0.12mA ) *Automatic feed forward compensation *Pulse-by-Pulse current limiting *Under-voltage lockout with hysteresis *Double pulse Suppression *High current totem pole output to drive MOSFET |
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Unisonic Technologies |
PWM DC-DC CONVERTER * 1.6A, 0.23Ω, internal switch * High efficiency: 90% * Adjustable output: VDD to 12V * Adjustable frequency: 640kHz or 1.3MHz * Wide input range: +2.6V ~ +5.5V * Low shutdown current: 0.1μA * Programmable soft-start ORDERING INFORMATION Ordering |
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Unisonic Technologies |
ENHANCED HIGH POWER FACTOR PREREGULATOR such as wide bandwidth, low offset Current Amplifier, a faster responding and improved accuracy enable comparator, a VREF "good" comparator, UVLO threshold options (16/10V for offline, 10.5/10V for startup from an auxiliary 12V regulator), lower star |
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Unisonic Technologies |
DC TO DC CONVERTER CONTROLLER * Operation from 3.0V to 40V. * Short Circuit Current Limiting. * Low Standby Current. * Output Switch Current of 1.5A without External Transistors. * Frequency of Operation from 100Hz to 100kHz. * Step-up, Step-down or Inverting Switch Regulators. |
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Unisonic Technologies |
HIGH PERFORMANCE CURRENT MODE CONTROLLER approximately 40μA start up current, a precision reference trimmed the error amplifier input. Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle-by-cycle current limiting, and so |
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Unisonic Technologies |
ADVANCED PWM STEP-UP DC-DC CONVERTER high switching rate which is up to 450 KHz, making the external component counts less required. Moreover, it features 17μA low quiescent current, which makes the battery life longer. The low start-up input voltage below 1V makes UTC UC3551 suitable f |
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Unisonic Technologies |
PWM STEP UP DC-DC CONTROLLER a voltage mode PWM control loop, providing stable and high efficiency operation over a broad load current range. FEATURES * 0.9V Low Start-Up Input Voltage at 1mA Load * Low Operation Current * 0.5uA Low Shutdown Current * Fix Frequency PWM at 30 |
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Unisonic Technologies |
STEP-UP DC/DC CONVERTERS * Output Voltage Range: 2.0V~7.0V in 0.1V Increments * Operating (Start-up) Voltage Range: 0.9V~10V * Highly Accurate: Set-up Voltage ±2.5% * Maximum Oscillator Frequency (Max Fosc1): 180kHz (±15%) * Variable Duty Ratio: 45%/75% (±5%) * Both Switchin |
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Unisonic Technologies |
LOW COST POWER-SAVING MODE PWM CONTROLLER with short startup time and no standby current. At no load condition, the IC operates in power-saving mode for lower standby power, decreasing frequency for higher conversion efficiency at light load condition. The internal slope compensation improve |
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