AAT2842IBJ-EE-T1 AnalogicTech, AAT2842IBJ-EE-T1 Datasheet
AAT2842IBJ-EE-T1
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AAT2842IBJ-EE-T1 Summary of contents
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TM ChargePump High-Current Charge Pump with S General Description The AAT2842 is a highly integrated charge pump with dual linear regulators optimized for systems operating with lithium-ion/polymer batteries. The charge pump provides power for both white LED backlight/keypad and flash. ...
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TM ChargePump High-Current Charge Pump with S Pin Descriptions Pin # Symbol Description Backlight LED 1 current sink. BL1 controls the current through Backlight LED 1. Connect the cathode of 1 BL1 Backlight LED 1 to BL1. If not used, ...
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TM ChargePump High-Current Charge Pump with S Pin Configuration TQFN44-28-0.4 (Top View BL1 1 BSET 2 FSET 3 AGND REF 6 FBB Absolute Maximum ...
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TM ChargePump High-Current Charge Pump with S Electrical Characteristics V = 3.6V 4.7μ 2.2μ OUT noted. Typical values are 25°C. A Symbol Description V IN Operating Voltage Range IN I ...
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TM ChargePump High-Current Charge Pump with S Electrical Characteristics V = 3.6V 4.7μ 2.2μ OUT noted. Typical values are 25°C. A Symbol Description Enable/Set V , BENS(L) BENS, FENS Low ...
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TM ChargePump High-Current Charge Pump with S Typical Characteristics V = 3.6V 4.7μ 2.2μ OUT noted. Typical values are 25°C. A Backlight Efficiency vs. Supply Voltage 100 ...
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TM ChargePump High-Current Charge Pump with S Typical Characteristics V = 3.6V 4.7μ 2.2μ OUT noted. Typical values are 25°C. A BENS, FENS High Threshold Voltage vs. Supply Voltage 1.2 ...
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TM ChargePump High-Current Charge Pump with S Typical Characteristics V = 3.6V 4.7μ 2.2μ OUT noted. Typical values are 25°C. A LDOs A and B Load Regulation 1.00 0.50 OUTA ...
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TM ChargePump High-Current Charge Pump with S Functional Block Diagram C1+ C1- C2+ C2- ENL BENS FENS CT BSET FSET Functional Description The AAT2842 is a highly integrated LED driver with two LDO linear regulators. The charge pump LED driver ...
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TM ChargePump High-Current Charge Pump with S The backlight and flash LED currents are controlled by a combination of an external programming resistor from BSET (for backlight) or FSET (for flash) to AGND and the backlight or flash serial S ...
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TM ChargePump High-Current Charge Pump with S Data FL Table 2: Flash Current Register: FL1-FL4 (R = 280kΩ). FSET Shutdown Since the ...
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TM ChargePump High-Current Charge Pump with S R2 Standard 1% Values (R1 = 120K) V (V) R2 (Ω) OUT 2.8 2.5 2.0 1.8 1.5 Table 3: Example Output Voltages and Corresponding Resistor Values. Altering the Maximum LED Current Level from ...
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TM ChargePump High-Current Charge Pump with S Using an additional resistor to connect the BSET pin with a digital output provides a LO/HI control. When the digital output is asserted high, the resulting brightness level for the backlighting section is ...
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TM ChargePump High-Current Charge Pump with S Capacitor Selection Careful selection of the four external capacitors and C is important because they will affect turn-on 2 OUT time, output ripple, and transient performance. Optimum performance will be ...
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TM ChargePump High-Current Charge Pump with S Evaluation Board Layout Figure 5: AAT2842 Evaluation Board Top Layer. Button(s) Pushed Description 1 Increment the data setting for the most recently activated mode. With backlight or movie mode DATA activated, hold down ...
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TM ChargePump High-Current Charge Pump with S Evaluation Board Schematics 280K yields 30mA/ch max backlighting 280K yields 150mA/ch max flash R9 R10 280K 280K 1.0μF CTRL 1.0μF OUTB Programmed for 2.8V output by default ...
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... High-Current Charge Pump with S DATA SW1 LIGHT SW2 MOVIE SW3 FLASH SW4 DC- Figure 8: MCU and I/O Expander Section Schematic. Evaluation Board Component Listing Component Part Number AAT2842INJ-EE-T1, U1 AAT2842IBJ-EE-T1 U2 PIC12F675 U3 AAT4291IJS-1- M673 D5, D6 LXCL-PWF1 C1, C2, C10 GRM18x C3, C5, C6, C7 GRM18x C4 GRM18x C8, C9, C11 ...
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... Sample stock is generally held on part numbers listed in BOLD Cwire Control and Dual LDO for Backlight and Flash Part Number (Tape and Reel) 1 AAT2842IBJ-EE-T1 AAT2842INJ-EE- PRODUCT DATASHEET AAT2842 Comments 2 Not recommended for new designs Recommended for new designs 2842 ...
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TM ChargePump High-Current Charge Pump with S Package Information 1 Pin 1 Dot by Marking 0.750 ± 0.050 0.050 ± 0.050 All dimensions in millimeters. 1. The leadless package family, which includes QFN, TQFN, DFN, TDFN and STDFN, has exposed ...
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... 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 the right to make changes to their products or specifi cations or to discontinue any product or service without notice. Except as provided in AnalogicTech’s terms and conditions of sale, AnalogicTech assumes no liability whatsoever, and AnalogicTech disclaims any express or implied warranty relating to the sale and/or use of AnalogicTech products including liability or warranties relating to fi ...