ame5249-aevadjl AME, Inc., ame5249-aevadjl Datasheet
ame5249-aevadjl
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ame5249-aevadjl Summary of contents
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... The AME5249 is an ideal solution for appli- cations powered by Li-Ion batteries or other portable ap- plications that require small board space. The AME5249 is available in a variety of fixed output voltage options, 1.0V, 1.2V, 1.3V, 1.5V, 1.8V, 2.5V, 2.7V, 2.8V, and 3.3V, and is also available in an adjustable output voltage version capable of generating output volt- ages from 0 ...
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... AME AME5249 Function Block Diagram EN Bandgap UVLO Fixed Output See Note Note: For the fixed output version the internal feedback divider is actived. For the adjustable version the internal feedback divider is disabled, and the FB pin is directly connected to the internal EA amplifer. 2 Synchronous Buck Converter ...
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... AME AME5249 n Pin Configuration SOT-25/TSOT-25 Top View 5 4 AME5249 Rev.A.01 Synchronous Buck Converter AME5249-AEVxxx GND FB/OUT Die Attach: Conductive Epoxy 1.5MHz, 600mA 3 ...
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... AME AME5249 n Pin Description Pin Number Pin Name GND FB/OUT 4 Synchronous Buck Converter Pin Description Enable Control Input. The enable pin is an active high control. Tie this pin above 1.4V to enable the device. Tie this pin below 0.4V to shut down the device. In shutdown, all function are disabled ...
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... AME AME5249 n Ordering Information AME5249 - xxx x Pin Package Configuration SOT-2X 2. GND (SOT-25 (TSOT-25 FB/OUT Rev.A.01 Number of Output Voltage Type Pins V: 5 ADJ: Adjustable 100: 1.0V 120: 1.2V 130: 1.3V 150: 1.5V 180: 1.8V 250: 2.5V 270: 2.7V 280: 2.8V 330: 3.3V 1.5MHz, 600mA Synchronous Buck Converter ...
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... AME5249 n Available Options Part Number AME5249-AEVADJ AME5249-AEVADJL Note: 1. The first 3 places represent product code assigned by AME such as BYO bar on top of first letter represents Green Part such as BYO. 3. The last 3 places MXX represent Marking Code. It contains M as date code in "month" code and that is for AME internal use only ...
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... AME AME5249 n Absolute Maximum Ratings Parameter Input Voltage EN, FB SW, V OUT ESD Classification Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device. * HBM B:2000V~3999V n Recommended Operating Conditions Parameter Input Supply Voltage Ambient Temperature Range Junction Temperature Range ...
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... AME AME5249 n Electrical Specifications V =3.6V, EN unless otherwise noted Parameter Input Voltage Output Voltage Accuracy (by every fixed output voltage) Output Voltage Accuracy (Adj) Adjustable Output Range Feedback Voltage Feedback Pin Bias Current Quiescent Current Shutdown Current Reference Voltage Line Regulation ...
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... AME AME5249 n Electrical Specifications (Contd.) V =3.6V, EN unless otherwise noted Parameter High-side Switch On-Resistance Low-side Switch On-Resistance Switch Current Limit Switch Leakage Current Switch Frequency Short Circuit Oscillator Frequency Maximum Duty Cycle Input Undervoltage Lockout Input Undervoltage Lockout Hysteresis Enable High (Enabled the Device) ...
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... AME5249 reduces it's oscillator frequency to around 210KHz to allow further inductor current reduction and to minimize power dissipation. Under Voltage Protection The AME5249 has an UVP comparator to turn the power device off in case the input voltage or battery voltage is too low. Soft Start The AME5249 integrates a soft start function that pre- vents input inrush current and output overshoot during start-up ...
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... RMS current must be used. The input filter capacitor supplies current to the main power MOSFET of AME5249 in the first half of each cycle and reduces voltage ripple imposed on the input power source. A ceramic capacitor's low ESR provides the best noise filtering of input voltage spikes due to this rapidly chang- ing current ...
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... In most applications the AME5249 does not dissipate much heat due to its high efficiency. But, in applications where the AME5249 is running at high ambient tempera- ture with low supply voltage and high duty cycles, such as in dropout, the heat dissipated may exceed the maxi- mum junction temperature of the part ...
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... L V OUT 4.7 H 1.5V/600mA C1 R1 22pF 475K C OUT 316K L V OUT 4.7 H 2.5V/600mA C1 R1 22pF 887K C OUT 280K 1.5MHz, 600mA Synchronous Buck Converter 4 AME5249 IN 22pF 4 GND Figure 7. AME5249 with 3.3V Output L V OUT 3.3V/600mA R1 887K C OUT 196K 13 ...
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... AME AME5249 Efficiency vs Output Current 100 90 V =3. =4. 0 Output Current(mA) Reference Voltage vs Temperature 0.620 V =3.6V IN 0.615 0.610 0.605 0.600 0.595 0.590 0.585 0.580 -40 -15 +10 +35 Temperature( Oscillator Frequency vs Supply Voltage 1.70 1.65 1.60 1.55 1.50 1.45 1.40 1.35 1.30 2.5 3 Synchronous Buck Converter V =2. ...
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... AME AME5249 Quiescent Current vs Temperature 50 V =3. =1.8V OUT 40 I =0A OUT -40 -15 +10 +35 Temperature( Load Step V OUT 100mV/Div AC COUPLED I L 500mA/Div I OUT 500mA/Div V =3.6V 20 S/Div IN V =1.8V OUT I =0mA to 600mA OUT Load Step V OUT 100mV/Div AC COUPLED I L 500mA/Div I OUT ...
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... AME AME5249 Stead State Test V IN 200mV/Div AC COUPLED V OUT 20mV/Div I L 100mA/Div /Div AC COUPLED V =3.6V 1 S/Div IN V =1.8V OUT I =300mA OUT R vs Input Voltage DS(ON) 0.7 0.6 0.5 0.4 0.3 0.2 0.1 2.5 3.5 Input Voltage(V) Start Up From Shutdown Run 2V/Div V OUT 1V/Div I L 500mA/Div V =3.6V 100 S/Div IN V =1.8V OUT I =550mA ...
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... AME AME5249 Current Limit vs Temperature 2.10 2.00 1.90 1.80 1.70 1.60 1.50 1.40 V =3.3V 1. 1.20 1.10 1.00 0.90 0.80 0.70 -40 -25 -10 +5 +20 +35 +50 +65 +80 +95 +110 Temperature( Rev.A.01 =3.6V V =5. =1.2V OUT +125 o C) 1.5MHz, 600mA Synchronous Buck Converter 17 ...
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... AME AME5249 n Date Code Rule Month Code 1: January 7: July 2: February 8: August 3: March 9: September 4: April A: October 5: May B: November 6: June C: December n Tape and Reel Dimension SOT-25 PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) SOT- ...
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... AME AME5249 n Tape and Reel Dimension TSOT-25 PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) TSOT-25 8.0±0.1 mm Rev.A.01 Synchronous Buck Converter P AME AME Pitch (P) Part Per Full Reel 4.0±0.1 mm 1.5MHz, 600mA W Reel Size 3000pcs 180±1 mm ...
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... AME AME5249 n Package Dimension SOT-25 Top View D S1 PIN 1 e Front View b TSOT-25 Top View D S1 PIN 1 e Front View b 20 Synchronous Buck Converter Side View SYMBOLS θ Side View SYMBOLS θ1 A ...
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... These products of AME, Inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. ...