AAT3114AISN-20-T1 AAT [Advanced Analog Technology, Inc.], AAT3114AISN-20-T1 Datasheet
AAT3114AISN-20-T1
Related parts for AAT3114AISN-20-T1
AAT3114AISN-20-T1 Summary of contents
Page 1
General Description The AAT3113 and AAT3114/14A are low noise, con- stant frequency charge pump DC/DC converters that use fractional (1.5X) conversion to increase effi- ciency in white LED applications. The devices can be used to produce current levels up to ...
Page 2
Pin Descriptions Part # Symbol AAT3114/14A AAT3113 C1 OUT C2- ...
Page 3
... Part Number Descriptions Part Number V Range IN 3.0V ≤ V ≤ 5.5V AAT3113ITP IN AAT3114ISN 3.2V ≤ V ≤ 5.5V IN AAT3114AISN Absolute Maximum Ratings T = 25°C, unless otherwise noted. A Symbol Description V Input Voltage IN V Charge Pump Output OUT V EN/SET to GND Voltage EN/SET V Maximum EN/SET to Input Voltage EN/SET(MAX) I Maximum DC Output Current (sum of I OUT θ ...
Page 4
Electrical Characteristics V = 3.5V -40°C to +85°C, unless otherwise noted. Typical values are Symbol Description Input Power Supply V Operation Range IN I Operating Current CC I Shutdown Current SHDN I Output Current ...
Page 5
Typical Characteristics V = 3.5V OUT 1 2 Quiescent Current vs. Temperature 1.00 0.98 0.96 0.94 0.92 0.90 0.88 0.86 -40 - Temperature (°C) Quiescent Current vs. Supply ...
Page 6
Typical Characteristics V = 3.5V OUT 1 2 Normalized I vs. Temperature DIODE 1.02 1.01 1.00 0.99 0.98 0.97 0.96 0.95 -40 - Temperature (°C) I vs. V ...
Page 7
Typical Characteristics V = 3.5V OUT 1 2 Turn-On ENSET (2V/div) OUT (5V/div) V DIODE (2V/div (50mA/div) Time (100µs/div) 40mA Load Characteristics IN OUT V DIODE Time (1µs/div) 80mA ...
Page 8
Functional Block Diagram EN/SET Interface Functional Description The AAT3113 and AAT3114/14A devices are high efficiency 1.5X fractional charge pumps intended for white LED backlight applications. The fraction- al charge pump consists of a linear regulator fol- lowed by a 1.5X ...
Page 9
Applications Information Current Level Settings LED current level is set via the serial interface according to a logarithmic scale where each code is 1dB greater than the previous code. In this man- ner, the LED brightness appears linear with each ...
Page 10
EN/SET Serial Interface The current source output magnitude is controlled by the EN/SET pin using AnalogicTech’s Simple Serial Control (S Cwire) interface. The interface 2 records rising edges of the EN/SET pin and decodes them into 32 individual current level ...
Page 11
V approaches V . Refer to the Typical IN OUT Characteristics section of this datasheet for meas- ured plots of efficiency versus input voltage and output load current for the given ...
Page 12
Test Current/Channel Disable Each channel of the output is equipped with a test current function. The AAT3113 and AAT3114 use a small (~2µA) current source injected into each out- put pin to detect the presence of an LED. Unused channels ...
Page 13
Driving white LED display module backlights and individual white LEDs connected in parallel: The AAT3114/14A outputs are true con- stant current sources capable of driving up to 20mA each over the operation input voltage range. Since these ...
Page 14
... Sample stock is generally held on all part numbers listed in BOLD. 14 High Efficiency 1.5X Fractional Charge Pumps For White LED Applications Marking Part Number (Tape and Reel) 1 HTXYY AAT3113ITP-20-T1 FGXYY AAT3114ISN-20-T1 OVXYY AAT3114AISN-20-T1 QFN44-16 0.330 ± 0.050 R0.030Max 2.280 REF Bottom View 0.203 ± ...
Page 15
BSC 0.50 BSC 0.50 BSC 0.50 BSC 0.50 BSC 3.00 ± 0.10 All dimensions in millimeters. © Advanced Analogic Technologies, Inc. AnalogicTech cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AnalogicTech product. ...