AAT3123 ETC, AAT3123 Datasheet
AAT3123
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AAT3123 Summary of contents
Page 1
... A low current shutdown feature disconnects the load from V and reduces quiescent current to less IN than 1µA. The AAT3123 is available in very small 12 pin TSOPJW package. The six output AAT3124 is available pin 4x4mm QFN package. Typical Application V ...
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... Pin Descriptions Pin # AAT3123 AAT3124 (TSOPJW-12) (16LD 4x4 QFN Pin Configuration 12-Lead TSOPJW (Top View) C2+ 1 OUT 2 C1- 3 AAT 3123 C1 High Efficiency 1X/1.5X Fractional Charge ...
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Absolute Maximum Ratings Symbol Description V Input Voltage IN V Charge Pump Output OUT FB EN/SET to GND Voltage EN/SET V Maximum EN/SET to Input Voltage EN/SET(MAX) I Maximum DC Output Current 2 OUT T Operating Junction Temperature ...
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... EN/SET Off Timeout OFF Input Current EN/SET input leakage Note 1: The AAT3123/4 is guaranteed to meet performance specification over the -40°C to 85°C operating temperature range and are assured by design, characterization and correlation with statistical process controls. 4 High Efficiency 1X/1.5X Fractional Charge Pump for White LED Applications 1 = -40 to 85° ...
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Typical Characteristics (Unless otherwise noted 3.5V Efficiency vs. V (4x20mA) IN 100% 95 3.2V 90% DIODE DIODE 85 3.0V DIODE 80% 75% 70% 65% 60% 55% 50% 2.7 2.9 3.1 3.3 ...
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Typical Characteristics (Unless otherwise noted 3.5V Turn-On to Full Scale Charge-Pump ENSET (1V/div) OUT (2V/div) V DIODE (1V/div (200mA/div) 50µs/div Charge Pump to Load Switch (80mA (10mV/div) OUT (2V/div) V DIODE (2V/div) ...
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... For the AAT3123, the 1X Load Switch / 1.5X charge pump mode is decided on the voltage sensed on the output D1. The AAT3124 bases the 1X Load Switch/1 ...
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... Since the output current of the AAT3123/24 is pro- grammable through its simple single-wire serial interface, no PWM (pulse width modulation) or additional control circuitry is needed to control LED brightness. This feature greatly reduces the burden on a microcontroller or system IC to manage LED or display brightness, allowing the user to "set it, and forget it." ...
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... LED Selection The AAT3123/24 is specifically intended for driving white LED's. However, the device design will allow the AAT3123/24 to drive most types of LED's with forward voltage specifications ranging from 2.0V to 4.3V. LED applications may include main and sub- LCD display backlighting, camera photo-flash appli- ...
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... One should refer to the following two sections for explanations for each operational mode. Load Switch Mode Efficiency The AAT3123/24 load switch mode is operational at all times and functions alone to enhance device power conversion efficiency when the condition exists where V ...
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... Driving Multiple LED's, White LED display module back lights and individual LED's connected in parallel The AAT3123/ outputs are true con- stant current sources capable of driving up to 20mA each over the operation input voltage range. Since these outputs are true constant current sources, they may be connected in parallel to drive a single power output ...
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... AAT3113/14, the AAT3123/24 offers an improved overall efficiency, wider operating range, and the ability to drive high-V full current from a 3V input condition. The AAT3123/24 is well suited for battery powered applications using single-cell lithium-ion (Li-Ion) batteries (4.2V to 2.8V), lithium polymer batteries, and 3-series connected dry cells (3.6V). ...
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... Additional Application Circuits V BATTERY C IN 1µ BATTERY 1µF AAT3123 Driving a Display Module with 4 Paralleled White LED's 3123.2003.09.1.1 High Efficiency 1X/1.5X Fractional Charge Pump for White LED Applications V C1+ IN C1- V OUT C2+ C OUT 1µF AAT3123 C2 EN/SET EN/SET D3 D4 GND Typical AAT3123 Application Circuit ...
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Additional Application Circuits BATTERY 1µF EN/SET AAT3124 Driving Two Groups of Paralleled White LED's (e.g. main-LCD & sub-LCD backlights BATTERY 1µF EN/SET *In some applications, white LED forward voltages (V for balancing the forward ...
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Additional Application Circuits BATTERY 1µF EN/SET Enable Display Backlight Enable Keyboard Backlight AAT3124 Driving Two Groups of Paralleled White LEDs (with Series N-channel Switch BATTERY 1µF EN/SET Enable Red Enable Green Enable Blue AAT3124 ...
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Additional Application Circuits V BATTERY Enable Red Enable Green Enable Blue AAT3124 Driving Common-Anode RGB Color LED 16 High Efficiency 1X/1.5X Fractional Charge Pump for White LED Applications V C1+ IN C1- V OUT C2 OUT AAT3124 ...
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... Package Information 0.50 BSC 0.50 BSC 0.50 BSC 0.50 BSC 0.50 BSC 3.00 ± 0.10 All dimensions in millimeters. 3123.2003.09.1.1 High Efficiency 1X/1.5X Fractional Charge Pump for White LED Applications Marking Part Number (Tape and Reel) 1 IRXYY AAT3123ITP-20-T1 ISXYY AAT3124ISN-20-T1 TSOPJW-12 + 0.10 0.20 - 0.05 7° NOM 4° ± 4° 0.055 ± 0.045 0.010 0.04 REF 0.45 ± ...
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Pin 1 Dot By Marking 4.000 ± 0.050 Top View All dimensions in millimeters. 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, ...