Features: Complete PWM Power Control Circuitry Under-Voltage Lockout (UVLO) Protection Open Drain Output Output Short Circuit Protection Low Dissipation Current1.6mA Dead-Time Control0 % to 100% Wide Operating Frequency: 10kHz to 800kHz VDD Range:4.0V to 14.0V PinoutSpecifications CHARACTERIS...
AAT1341: Features: Complete PWM Power Control Circuitry Under-Voltage Lockout (UVLO) Protection Open Drain Output Output Short Circuit Protection Low Dissipation Current1.6mA Dead-Time Control0 % to 100% Wid...
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CHARACTERISTICS | SYMBOL |
Value | Units |
Supply Voltage |
V DD | 14.0 | V |
Input Voltage (IE , DTC) | Vi | VDD | V |
Output Voltage | VO | VDD+0.3 | V |
Output Current |
I O | 120 | mA |
Operating Free-Air Temperature Range | T C | -20 to 85 | °C |
Storage Temperature Range | Tstorage | -45 to 125 | °C |
Power Dissipation | PD | 500 | mW |
The AAT1341 provides an integrated two-channel pulse-width-modulation (PWM) solution for the power supply of DC-DC system; this device offers system engineers the flexibility to tailor-make the power supply circuitry for specific applications. Each channel contains its own error amplifier, PWM comparator, dead¨Ctime control (DTC), and output driver. The under-voltage protection, oscillator, short circuit protection and voltage reference circuit are the common features of the two channels.
Both channels of AAT1341 can be used for DC-DC converter operations including step-up, step-down, and inverting. Dead-time control can be set to provide 0% to 100% dead-time through a resistive divider network. Soft-start can be implemented by paralleling the DTC resistor with a capacitor. Two dead-time control inputs are assigned for CH1 and CH2 individually, and dead-time control inputs can be used to control on / off operation.
With a minimal number of external components, the AAT1341 offers a simple and cost effective solution.