AAT2514_08 ANALOGICTECH [Advanced Analogic Technologies], AAT2514_08 Datasheet
AAT2514_08
Related parts for AAT2514_08
AAT2514_08 Summary of contents
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SwitchReg TM General Description The AAT2514 SwitchReg™ dual channel current mode PWM DC-DC step-down converter operating at 1.5MHz constant frequency. The device is ideal for portable equip- ment requiring two separate power supplies that need high current up ...
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SwitchReg SwitchReg TM TM Pin Descriptions Pin # Symbol Function Feedback input for channel 1. Connect FB1 to the center point of an external resistor divider. The feed- 1 FB1 back threshold voltage is 0.6V. Channel 1 enable pin. Active ...
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SwitchReg SwitchReg TM TM Absolute Maximum Ratings Symbol Description V Input Supply Voltage EN1, EN2 Voltages EN1 EN2 FB1, FB2 Voltages FB1 FB2 LX1, LX2 Voltages LX1 LX2 V POR ...
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SwitchReg SwitchReg TM TM Electrical Characteristics 3.6V 25°C, unless otherwise noted Symbol Description Step-Down Converter V Input Voltage Range IN I Input DC Supply Current Q Regulated Feedback V FB Voltage ...
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SwitchReg SwitchReg TM TM Typical Characteristics Efficiency vs. Load Current (V = 2.5V 25°C) OUT A 100 ...
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SwitchReg SwitchReg TM TM Typical Characteristics Frequency vs. Input Voltage (V = 3.6V 1.8V 150mA OUT LOAD IN 1.58 1.56 1.54 1.52 1.50 1.48 1.46 2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 ...
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SwitchReg SwitchReg TM TM Functional Block Diagram 600mV + FB1 + OVDET - 650mV EN1 2 Overtemperature Bandgap and Shortcircuit Reference 9 EN2 Protection FB2 10 Functional Description The AAT2514 is a dual high performance 600mA, 1.5MHz ...
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SwitchReg TM Current Mode PWM Control Slope compensated current mode PWM control provides stable switching and cycle-by-cycle current limit for excellent load and line response and protection of the internal main switch (P-channel MOSFET) and synchro- nous rectifier (N-channel MOSFET). ...
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SwitchReg TM Applications Information Setting the Output Voltage Figure 1 shows the basic application circuit for the AAT2514. Resistors R1 and R3 and R2 and R4 program the output to regulate at a voltage higher than 0.6V. To limit the ...
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SwitchReg TM For output voltages above 2.0V, when light-load efficiency is important, the minimum recommended inductor size is 2.2μH. For optimum voltage-positioning load transients, choose an inductor with DC series resistance in the 50mΩ to 150mΩ range. For higher efficiency ...
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SwitchReg TM Therefore: 2 2.2µH m With these adaptive settings, a 2.2μH inductor can be used for all output voltages from 0.6V to 5V. Input Capacitor Selection The input capacitor reduces the surge current drawn from the ...
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SwitchReg TM In many practical designs, to get the required ESR, a capacitor with much more capacitance than is needed must be selected. For both continuous or discontinuous inductor current mode operation, the ESR of the C needed to limit ...
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SwitchReg TM Layout Guidance Figure 1 is the schematic for a typical application. When laying out the PC board, the following layout guidelines should be followed to ensure proper operation of the AAT2514: 1. Exposed pad must be reliably soldered ...
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SwitchReg SwitchReg TM TM Ordering Information Output Voltage 1 Adj. 0. All AnalogicTech products are offered in Pb-free packaging. The term “Pb-free” means semiconductor products that are in compliance with current RoHS standards, including the requirement that ...