A6210GEUTR-T Allegro Microsystems Inc, A6210GEUTR-T Datasheet
A6210GEUTR-T
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A6210GEUTR-T Summary of contents
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Features and Benefits ▪ User-configurable on-time, achieving switching frequencies up to 2.0 MHz ▪ Brightness control through PWM of DIS pin ▪ Minimal external components required ▪ No output capacitor required ▪ Wide input voltage range ...
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... A6210 Selection Guide Part Number Packing A6210GEUTR-T 1500 pieces per reel Absolute Maximum Ratings (reference to GND) Characteristic VIN Pin Supply Voltage LX Pin Switching Node Voltage ISEN Pin Current Sense Voltage DIS Pin Disable Voltage TON Pin On-Time Voltage Operating Ambient Temperature ...
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A6210 1.0 μF R1 180 kΩ TON DIS Switch Closed = On VIN UVLO Linear OK TSD Switching Frequency = 1.4 MHz All capacitors are X5R or X7R ceramic Resistor R2 should be surface mount, ...
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A6210 ELECTRICAL CHARACTERISTICS Characteristic General V Quiescent Current IN Current Sense Voltage On-Time Tolerance Minimum On-Time Period Minimum Off-Time Period Start-Up Time Buck Switch On-Resistance Input DIS Input Voltage Threshold DIS Open-Circuit Voltage DIS Input Current Protection VIN Undervoltage Shutdown ...
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A6210 Basic Operation The A6210 is a buck regulator that utilizes valley current mode control. The on-time is set by the amount of current that flows into the TON pin. This is determined by the value of the TON resistor ...
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A6210 of physically small, low value inductors. An output capacitor is not necessary either to reduce the ripple current or to close the control loop. High efficiencies are achieved via drive circuits optimized to minimize switching losses and the current ...
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A6210 off-time of 350 ns. A minimum off-time is required to ensure the bootstrap supply operates correctly. It can be shown that: 1 – (min) off where t is 350 ns maximum. off Therefore: 1 ...
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A6210 Figure 3. Switching voltage versus current through L1 and LED string I LED V LX Ch1 Ch2 t (A) Figure 4. PWM on DIS pin at 400 Hz: (A) narrow duty cycle, (B) wide duty cycle ...
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A6210 BOOT VIN C1 1.0 μ 6210 910 kΩ 910 kΩ ISEN TON PWM or Switch DIS SGND NC GND Channel 1 – Current through inductor and LED Assembly, Channel 2 – ...
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A6210 BOOT VIN C1 1.0 μ 6210 310 kΩ ISEN TON PWM or Switch DIS SGND NC GND Channel 1 – Current through inductor and LED Assembly, Channel 2 – Main switching voltage ...
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A6210 4.00 ±0. 17X 0.08 C 0.30 ±0.05 0.65 0.40 ±0. 2.70 Copyright ©2008-2009, Allegro MicroSystems, Inc. The products described here are manufactured under one or more U.S. patents or U.S. patents ...