AAT3258ITS-3.0-R-T1 ANALOGICTECH [Advanced Analogic Technologies], AAT3258ITS-3.0-R-T1 Datasheet
AAT3258ITS-3.0-R-T1
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AAT3258ITS-3.0-R-T1 Summary of contents
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General Description The AAT3258 combines a high performance, low noise, 300mA low dropout (LDO) linear regulator with a microprocessor reset monitor. The 300mA output capability of the LDO regulator makes this device ideal for use with microprocessors and DSP cores ...
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Pin Descriptions Pin # Symbol Function 1 VIN LDO voltage regulator input pin. This pin should be decoupled with 1µF or greater capacitor. See application information. 2 SHDN LDO voltage regulator shutdown pin. This pin should not be left floating. ...
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Absolute Maximum Ratings T = 25°C, unless otherwise noted. A Symbol Description V Input Voltage IN V RESET to GND RESET V Maximum SHDN to Input Voltage SHDNIN(MAX) I LDO Regulator DC Output Current OUT I Maximum Reset Output Current ...
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Electrical Characteristics T = 25°C, unless otherwise noted. J Symbol Description 300mA LDO Regulator V Output Voltage OUT I Output Current OUT I Short-Circuit Current SC I Ground Current GND I Shutdown Current SHDN ∆V /V *∆V Line Regulation OUT ...
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Electrical Characteristics T = 25°C, unless otherwise noted. A Symbol Description Microprocessor Reset Monitor V Input Voltage Range DET I Quiescent Current Q I Operating Supply Current DD I Reset Leakage Current DOFF V Reset Threshold Voltage TH ∆V /°C ...
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Typical Characteristics Unless otherwise noted 5V Dropout Voltage vs. Temperature 540 I = 300mA 480 L 420 360 300 I = 100mA 150mA L 240 180 120 60 0 -40 -30 -20 -10 ...
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Typical Characteristics Unless otherwise noted 5V Initial Power-Up Response Time (C = 10nF) BYP V (5V/div) SHDN V (1V/div) OUT 400µs/div Turn-On Time From Enable ( 10nF) BYP V (5V/div) SHDN V = 1V/div ...
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Typical Characteristics Unless otherwise noted 5V AAT3258 Self Noise (C = 10µF, ceramic) OUT 10 1 0.1 Band Power: 0.01 300Hz to 50kHz = 44.6µVrms/rtHz 100Hz to 100kHz = 56.3µVrms/rtHz 0.001 0.01 0 Frequency ...
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Typical Characteristics Unless otherwise noted 5V Maximum Transient Duration vs. Reset Threshold Overdrive 400 350 300 250 200 150 100 Reset Threshold Overdrive (mV 3258.2005.04.1.5 300mA LDO Linear ...
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Functional Block Diagram V IN SHDN V DET Functional Description The AAT3258 is intended for LDO regulator applica- tions where output current load requirements range from no load to 300mA. The advanced circuit design of the AAT3258 has been specifically ...
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The microprocessor reset section monitors the supply voltage to a microprocessor and asserts a reset sig- nal whenever the V voltage falls below a factory- DET programmed threshold. This threshold is accurate within +/-1.5% at 25°C. The reset signal remains ...
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Bypass Capacitor and Low Noise Applications A bypass capacitor pin is provided to enhance the low noise characteristics of the AAT3258 LDO reg- ulator. The bypass capacitor is not necessary for operation. However, for best device performance, a small ceramic ...
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When the LDO regulator is in the shutdown mode, an internal 1.5kΩ resistor is connected between V and GND. This is intended to discharge C OUT when the LDO regulator is disabled. The internal 1.5kΩ has no adverse effect on ...
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Figure 2 shows typical behavior of short duration pulses versus RESET comparator over- drive. As shown in the Maximum Transient Duration vs. Reset Threshold Overdrive graph, when the transient voltage becomes larger, the time allowed before asserting a reset ...
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Evaluation Board Layout The AAT3258 evaluation layout (Figures 3, 4, and 5) follows the recommend printed circuit board lay- Figure 3: Evaluation Board Component Side Layout. 3258.2005.04.1.5 300mA LDO Linear Regulator with µP Reset out procedures and can be used ...
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... Fax (408) 737-4611 16 300mA LDO Linear Regulator with µP Reset 1 LDO Regulator Marking 2.80V IIXYY 2.80V IHXYY 3.0V MEXYY 3.3V MXXYY TSOPJW-8 0.325 ± 0.075 7° 0.010 0.055 ± 0.045 AAT3258 2 Part Number (Tape and Reel) AAT3258ITS-2.8-R-T1 AAT3258ITS-2.8-Y-T1 AAT3258ITS-3.0-R-T1 AAT3258ITS-3.3-R-T1 0.04 REF 0.45 ± 0.15 2.75 ± 0.25 3258.2005.04.1.5 3 ...
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Form#: FOR001 Rev. D ...