AAT3151IWP-T1 AnalogicTech, AAT3151IWP-T1 Datasheet
AAT3151IWP-T1
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AAT3151IWP-T1 Summary of contents
Page 1
... V and V ) makes the AAT3151 ideally suited for OUT small battery-powered applications. AnalogicTech Cwire™ (Advanced Simple Serial Control™) serial digital input is used to enable, disable, and set current for each LED with a 16-level logarithmic scale plus four low-current settings down to 50µ ...
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Pin Descriptions Pin # Symbol Function 1 D4 Current sink input #4. 2 EN/SET AS 2 Cwire serial interface control pin. 3 C1+ Flying capacitor 1 positive terminal. Connect a 1µF capacitor between C1+ and C1-. 4 C1- Flying capacitor ...
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Absolute Maximum Ratings Symbol Description V Input Voltage IN V EN/SET to GND Voltage EN/SET 2 I Maximum DC Output Current OUT T Operating Junction Temperature Range J T Maximum Soldering Temperature (at leads, 10 sec) LEAD Thermal Information 3 ...
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Electrical Characteristics 1.0µ OUT Typical values are T = 25° Symbol Description Input Power Supply V Operation Range IN I Operating Current CC I ...
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Typical Characteristics Efficiency vs. Supply Voltage 100 4.1mA 2. 10.2mA 1mA 2.6 2.8 2.9 3.1 3.2 3.4 3.6 Supply ...
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Typical Characteristics Load Characteristics (V = 3.7V; 1.5X Mode; 15mA Load (40mV/div) CP (40mV/div) V SINK (40mV/div) Time (500ns/div) Load Characteristics (V = 3.9V; 1.5X Mode; 20mA Load (40mV/div) CP (40mV/div) V SINK (40mV/div) ...
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Typical Characteristics EN/SET Latch Timeout vs. Input Voltage 350 300 250 -40°C 200 150 25°C 85°C 100 50 0 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 Input Voltage (V) Input Ripple vs. ...
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Functional Block Diagram VIN EN/SET Functional Description The AAT3151 is a tri-mode load switch (1X) and high efficiency (1.5X or 2X) charge pump device intended for white LED backlight applications. To maximize power conversion efficiency, an internal sensing circuit monitors ...
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LED current drive can be changed successively to brighten or dim LEDs in smooth transitions (e.g., to fade out abrupt steps, giving the user complete program- mability and real-time control of LED ...
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AS 2 Cwire Serial Interface Timing EN/SET 1 Address Data Reg 1 Data Reg Cwire Addressing Five addresses are available to enable all of the part's functionality. Two 4-bit registers control the main and sub-channel, giving 16 ...
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Data Max Current 1 20mA Max Scale 2 30mA Max Scale 3 15mA Max Scale 4 Low Current Mode Table 3: Max Current Register Settings— Address 4. Data D1-D3 (mA ...
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DC/DC boost converter white LED backlight solu- tions. The AAT3151 soft-start feature prevents noise transient effects associated with inrush cur- rents during start-up of the charge pump circuit. Power Efficiency and Device Evaluation The charge pump efficiency discussion in the ...
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The expression to define the ideal efficiency (η) can be rewritten as: × η = OUT OUT OUT = × 1. OUT -or- ⎛ ⎞ V η(%) = 100 OUT ⎝ ...
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... Index Area (D/2 x E/2) Detail "B" 1.70 ± 0.05 Bottom View Option A: Option B: C0.30 (4x) max R0.30 (4x) max Chamfered corner Round corner Detail "A" AAT3151 For White LED Applications 2 AAT3151IWP-T1 0.3 ± 0.10 0.375 ± 0.125 0.16 0.075 ± 0.075 0.1 REF Pin 1 Indicator (optional) Detail "B" 3151.2005.12.1.7 3151.2005.12.1.7 ...