AAT1146IJS-0.6-T1 Analogic Tech, AAT1146IJS-0.6-T1 Datasheet

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SwitchReg TM General Description The AAT1146 SwitchReg is a 1.4MHz step-down con- verter with an input voltage range of 2.7V to 5.5V and output voltage as low as 0.6V optimized to react quickly to a load variation. The ...

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SwitchReg SwitchReg TM TM Pin Descriptions Pin # Symbol SC70JW-8 SOT23 OUT 3 5 VIN AGND PGND Pin Configuration SC70JW-8 (Top View OUT 2 VIN ...

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SwitchReg SwitchReg TM TM Absolute Maximum Ratings Symbol Description V Input Voltage GND GND OUT to GND OUT GND EN T Operating Junction Temperature Range J T Maximum Soldering Temperature ...

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SwitchReg SwitchReg TM TM Electrical Characteristics T = -40°C to +85°C, unless otherwise noted. Typical values are T A Symbol Description Step-Down Converter V Input Voltage IN V UVLO Threshold UVLO V Output Voltage Tolerance OUT V Output Voltage Range ...

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SwitchReg SwitchReg TM TM Typical Characteristics Efficiency vs. Load = 1.8V 4.7μ μ OUT 100 Output ...

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SwitchReg SwitchReg TM TM Typical Characteristics Soft Start (V = 3.6V 1.8V 400mA) IN OUT OUT 5 4 3.0 2.0 1.0 0.0 -1.0 -2.0 I -3.0 L -4.0 -5.0 Time (100μ μ ...

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SwitchReg SwitchReg TM TM Typical Characteristics P-Channel R vs. Input Voltage DS(ON) 750 700 650 120°C 100°C 600 550 85°C 500 450 25°C 400 350 300 2.5 3.0 3.5 4.0 4.5 Input Voltage (V) Load Transient Response (1mA to 300mA; ...

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SwitchReg SwitchReg TM TM Typical Characteristics Line Response (V = 1.8V @ 400mA) OUT 1.82 1.81 1.80 1.79 1.78 1.77 1.76 Time (25μ μ s/div) Output Ripple (V = 3.6V 1.8V 400mA) IN OUT OUT 40 ...

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SwitchReg TM Functional Block Diagram Voltage Reference INPUT EN Note: For adjustable version, the internal feedback divider is omitted and the OUT pin is tied directly to the internal error amplifier. Functional Description The AAT1146 is a high performance 400mA ...

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SwitchReg TM Figure 1: Enhanced Transient Response Schematic. Control Loop The AAT1146 is a peak current mode step-down con- verter. The current through the P-channel MOSFET (high side) is sensed for current loop control, as well as short circuit and ...

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SwitchReg TM Applications Information Inductor Selection The step-down converter uses peak current mode con- trol with slope compensation to maintain stability for duty cycles greater than 50%. The output inductor value must be selected so the inductor current down slope ...

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SwitchReg TM for · RMS(MAX) 2 ⎛ ⎞ The term O O appears in both the input voltage rip- · ⎝ ⎠ ...

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SwitchReg TM Figure 2: AAT1146 Evaluation Board Top Side Layout. Adjustable Output Resistor Selection For applications requiring an adjustable output voltage, the 0.6V version can be externally programmed. Resistors R1 and R2 of Figure 5 program the output to regulate ...

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SwitchReg 59kΩ V (V) R1 (kΩ) OUT 0.8 19.6 0.9 29.4 1.0 39.2 1.1 49.9 1.2 59.0 1.3 68.1 1.4 78.7 1.5 88.7 1.8 118 1.85 124 2.0 137 2.5 187 3.3 267 Table 2: Adjustable Resistor ...

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SwitchReg SwitchReg TM TM Layout The suggested PCB layout for the AAT1146 is shown in Figures 2, 3, and 4. The following guidelines should be used to help ensure a proper layout. 1. The input capacitor (C2) should connect as ...

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SwitchReg SwitchReg TM TM Step-Down Converter Design Example Specifications V = 1.8V @ 400mA (adjustable using 0.6V version), Pulsed Load Δ 2.7V to 4.2V (3.6V nominal 1.4MHz 85°C AMB 1.8V Output ...

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SwitchReg SwitchReg TM TM AAT1146 Losses 2 I · (R · DSON(HS) O DSON(LS TOTAL · F · · · (0.725 ...

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SwitchReg SwitchReg TM TM Adjustable Version (0.6V device) V (V) OUT 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 Fixed Version V (V) OUT 0.6-3.3V Table 3: Evaluation Board Component Values. Manufacturer Part Number Sumida ...

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... Fast Transient 400mA Step-Down Converter Marking 2 OXXYY 1JXYY 1CXYY QMXYY SOT23-5 SC70JW-8 0.225 ± 0.075 2.00 ± 0.20 0.100 0.45 ± 0. PRODUCT DATASHEET PRODUCT DATASHEET AAT1146 AAT1146 Part Number (Tape and Reel) AAT1146IJS-0.6-T1 AAT1146IJS-1.2-T1 AAT1146IJS-1.8-T1 AAT1146IJS-1.875-T1 AAT1146IGV-0.6-T1 0.048REF 4° ± 4° 2.10 ± 0. ...

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... Testing and other quality control techniques are utilized to the extent AnalogicTech deems necessary to support this warranty. Specifi c testing of all parameters of each device is not necessarily performed. AnalogicTech and the AnalogicTech logo are trademarks of Advanced Analogic Technologies Incorporated. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders ...