ame5248a AME, Inc., ame5248a Datasheet
ame5248a
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ame5248a Summary of contents
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... The AME5248A is an ideal solution for applications powered by Li-Ion batteries or other por- table applications that require small board space. The AME5248A 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 AME5248A 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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... Pin Name GND FB/OUT 5 SW Rev.A.01 Synchronous Buck Converter AME5248A-AEVxxx GND FB/OUT 5. SW Die Attach: Conductive Epoxy Pin Description Input Supply Voltage Pin. Bypass this pin with a capacitor as close to the device as possible Ground Tie directly to ground plane. ...
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... AME AME5248A n Ordering Information AME5248A - xxx x Pin Package Configuration SOT-2X 2. GND (SOT-25 (TSOT-25) 4. FB/OUT 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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... Available Options Part Number Marking* AME5248A-AEVADJ AME5248A-AEVADJL Note: 1. The first 3 places represent product code assigned by AME such as BWN bar on top of first letter represents Green Part such as BWN. 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 AME5248A 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 Ambient Temperature Range Junction Temperature Range Storage Temperature Range ...
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... AME AME5248A 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 AME5248A 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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... AME5248A reduces it's oscillator frequency to around 210KHz to allow further inductor current reduction and to minimize power dissipation. Under Voltage Protection The AME5248A has an UVP comparator to turn the power device off in case the input voltage or battery voltage is too low. Soft Start The AME5248A 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 AME5248A 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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... Thermal Considerations In most applications the AME5248A does not dissi- pate much heat due to its high efficiency. But, in applica- tions where the AME5248A is running at high ambient (P-P) requirement. The temperature with low supply voltage and high duty cycles, such as in dropout, the heat dissipated may exceed the maximum junction temperature of the part ...
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... OUT 240K L V OUT 4.7 H 1.5V/600mA C1 R1 22pF 360K C OUT 180K L V OUT 4.7 H 2.5V/600mA C1 R1 22pF 510K C OUT 130K 1.5MHz, 600mA L 4 AME5248A IN 22pF 4 GND Figure 7. AME5248A with 3.3V Output V OUT 3.3V/600mA R1 680K C OUT 120K Rev.A.01 ...
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... AME AME5248A Efficiency vs Output Current 100 90 V =3. =4. 0 Output Current(mA) Reference Voltage vs Temperature 0.520 V =3.6V 0.515 IN 0.510 0.505 0.500 0.495 0.490 0.485 0.480 -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 3.5 V (V) IN Rev.A.01 Synchronous Buck Converter V =2. =2.5V OUT ...
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... AME AME5248A 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 AME5248A Stead State Test V IN 200mV/Div AC COUPLED V OUT 20mV/Div I L 100mA/Div /Div AC COUPLED V =3. =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 OUT Rev.A.01 ...
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... AME AME5248A 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( 16 =3.6V V =5. =1.2V OUT +125 o C) 1.5MHz, 600mA Synchronous Buck Converter Rev.A.01 ...
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... AME AME5248A 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-25 8.0±0.1 mm Rev.A.01 Synchronous Buck Converter ...
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... AME AME5248A 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 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 AME5248A 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 Rev.A.01 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. ...