AAT1120IES-0.6-T1 Advanced Analog Technology, Inc., AAT1120IES-0.6-T1 Datasheet
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AAT1120IES-0.6-T1
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AAT1120IES-0.6-T1 Summary of contents
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General Description The AAT1120 SwitchReg is a 1.5MHz step-down converter with an input voltage range of 2.7V to 5.5V and output as low as 0.6V. Its low supply current, small size, and high switching frequency make the AAT1120 the ideal ...
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Pin Descriptions Pin # Symbol Function 1 VP Input power pin; connected to the source of the P-channel MOSFET. Connect to the input capacitor. 2 VIN Input bias voltage for the converter. 3 GND Non-power signal ground pin ...
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Absolute Maximum Ratings Symbol Description V Input Voltage and Bias Power to GND GND GND OUT GND EN T Operating Junction Temperature Range J T Maximum Soldering Temperature (at ...
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Electrical Characteristics V = 3.6V -40°C to +85°C, unless otherwise noted; typical values are Symbol Description V Input Voltage IN V UVLO Threshold UVLO V Output Voltage Tolerance OUT V Output Voltage Range OUT I ...
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Typical Characteristics Efficiency vs. Load (V = 3.0V 4.7µH) OUT 100 Output Current (mA) Efficiency vs. Load (V = 1.8V; L ...
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Typical Characteristics Soft Start (V = 3.6V 1.8V; 500mA) IN OUT 5 4 3.0 2.0 1.0 0.0 -1.0 -2 -3.0 -4.0 -5.0 Time (100µs/div) Output Voltage Error vs. Temperature (V = 3.6V; ...
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Typical Characteristics P-Channel R vs. Input Voltage DS(ON) 1000 900 120°C 100°C 85°C 800 700 600 25°C 500 400 300 2.5 3.0 3.5 4.0 4.5 Input Voltage (V) Load Transient Response (1mA to 500mA 3.6V ...
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Typical Characteristics Output Ripple (V = 3.6V 1.8V OUT OUT - Time (2µs/div) 8 500mA Step-Down Converter = 1mA 0.04 -20 0.03 -40 0.02 -60 0.01 ...
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Functional Block Diagram FB Voltage Reference EN INPUT Functional Description The AAT1120 is a high performance 500mA, 1.5MHz monolithic step-down converter designed to operate with an input voltage range of 2.7V to 5.5V. The converter operates at 1.5MHz, which minimizes ...
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Control Loop The AAT1120 is a 500mA current mode step-down converter. The current through the P-channel MOSFET (high side) is sensed for current loop control, as well as short-circuit and overload pro- tection. A fixed slope compensation signal is added ...
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Output Voltage (V) 1.0 1.2 1.5 1.8 2.5 3.0 3.3 Table 1: Inductor Values. The 3.0μH CDRH2D09 series inductor selected from Sumida has a 150mΩ DCR and a 470mA DC current rating. At full load, the inductor DC loss is ...
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In applications where the input power source lead inductance cannot be reduced to a level that does not affect the converter performance, a high ESR tantalum or aluminum electrolytic should be placed in parallel with the low ESR, ESL bypass ...
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Thermal Calculations There are three types of losses associated with the AAT1120 step-down converter: switching loss- es, conduction losses, and quiescent current loss- es. Conduction losses are associated with the R characteristics of the power output switch- DS(ON) ing devices. ...
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Layout The suggested PCB layout for the AAT1120 in an STDFN22-8 package is shown in Figures 2, 3, and 4. The following guidelines should be used to help ensure a proper layout. 1. The input capacitor (C1) should connect as ...
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Step-Down Converter Design Example Specifications V = 1.8V @ 250mA, Pulsed Load Δ 2.7V to 4.2V (3.6V nominal 1.5MHz 85°C AMB 1.8V Output Inductor µsec µsec L1 = 1.67 ⋅ V ...
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Input Capacitor Input Ripple V = 25mV ⎛ V ⎞ ⎛ 25mV - ESR · 4 · ⎝ I ⎠ ⎝ 0. 0.1Arms RMS 2 ...
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Output Voltage V (V) OUT 0.6 2 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.8 1.85 2.0 2.5 3.3 Manufacturer Part Number Sumida CDRH2D09-1R5 Sumida CDRH2D09-2R2 Sumida CDRH2D09-2R5 Sumida CDRH2D09-3R0 Sumida CDRH2D09-3R9 Sumida CDRH2D09-4R7 Sumida CDRH2D09-5R6 Sumida CDRH2D11-1R5 Sumida ...
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Manufacturer Part Number Murata GRM118R60J475KE19B Murata GRM188R60J106ME47D 18 500mA Step-Down Converter Value (μF) 4.7 10 Table 5: Surface Mount Capacitors. AAT1120 Voltage Temp. Case Rating Co. Size 6.3 X5R 0603 6.3 X5R 0603 1120.2007.01.1.0 ...
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... A solder fillet at the exposed copper edge cannot be guaranteed and is not required to ensure a proper bottom solder connection. 1120.2007.01.1.0 500mA Step-Down Converter Marking Part Number (Tape and Reel) 1 VQXYY AAT1120IES-0.6-T1 STDFN22-8 Detail "A" 0.80 ± 0.05 Bottom View 0.35 ± 0.05 Pin 1 Indicator (optional) Detail " ...
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Advanced Analogic Technologies, Inc. AnalogicTech cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AnalogicTech product. No circuit patent licenses, copyrights, mask work rights, or other intellectual property rights are implied. AnalogicTech reserves ...