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PTB48510 Datasheet(PDF) 3 Page - Texas Instruments |
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PTB48510 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 18 page  Not Recommended for New Designs PTB48510 PTB48511 www.ti.com SLTS219F – FEBRUARY 2004 – REVISED MARCH 2007 ELECTRICAL CHARACTERISTICS (Unless otherwise stated, TA = 25°C, VI = 48 V, CI = 0 μF, CO = 0 μF, IO1 = IO2 = 3.25 A maximum) PTB4851xA PARAMETER TEST CONDITIONS MIN TYP MAX UNIT PO Output Power Total output power from VO1 or VO2 0 65 (1) W IO1, IO2 Output Current Over VI range, IO1 ≤ 0.1 A or IO2 ≤ 0.1 A 0 6.5(2) A IO1 - IO2 Output Load Imbalance IO1 ≤ 0.1 A or IO2 ≤ 0.1 A 0 1(3) A Includes set point, line, load, IO1 ≤ 0.1 A or IO2 ≤ 0.1 A VO1, VO2 Output Voltage 4.75(2) 5 5.25(2) V –40°C ≤ TA ≤ 85°C VO1 ±1 –40°C ≤ TA ≤ 85°C, IO1 ≤ 0.1 A or IO2 ≤ 0.1 ΔRegtemp Temperature Variation %VO A VO2 ±1 ΔRegline Line Regulation Over VI range, balanced load VO1 or VO2 ±0.1 ±0.4 %VO ΔRegload Load Regulation Over IO1, IO2range, balanced load VO1 or VO2 ±0.2 ±0.4 %VO η Efficiency 86% Vr VO Ripple (pk-pk) 20 MHz bandwidth, CO = 10-μF tantalum capacitor 20 30(4) mVpp ttr 0.11 A/ μs load step, 50% to 75% IO1 or IO2 maximum 30 μs Transient Response ΔVtr VO1 or VO2 overshoot/undershoot ±1.0 %VO IOtrip Overcurrent Threshold VI = 36 V, reset followed by auto-recovery 6.8 7.5 10 A PTB48510 NA NA VO1(trip), Overvoltage Threshold Outputs latched off (5) V VO2(trip) PTB48511 5.9 7 IO1(pk) IO2(pk) 12.5 A Short Circuit Current Continuous overcurrent trip, IO1 = IO2 Duty 10% VO1(adj), Output Voltage Adjust VO1 or VO2 adjust simultaneously 3.5 5.5 V VO2(adj) Range f S Switching Frequency Over VI and IO ranges 440 470(6) 500 kHz VI on VI increasing 33 Undervoltage lockout V VI off VI decreasing 32 On/Off Enable (pin 3) VIH High-level input voltage 3.6 75(7) Referenced to VI (pin 4) V VIL Low-level input voltage –0.2 0.8 IIL Low-level input current –1 mA II standby Standby Input Current Pin 3 connected 2 mA tON Start-up Time IO1 ≤ 0.1 A or IO2 ≤ 0.1 A, VO1 or VO2 rising 0 to 0.95 (typ) 6 10 22 ms CI Internal Input Capacitance 3 μF External Output 5000(8 CO Capacitance from either output to COM (pin 6) 0 μF Capacitance ) PTB48510A 2.7 Per Telcordia SR-332 50% stress, MTBF Reliability 106 hrs TA = 40°C, ground benign PTB48511A 2.5 (1) See Safe Operating Area curves or contact the factory for the appropriate derating. (2) Under balanced load conditions, load current flowing out of VO1 is balanced to within ±0.1 A of that flowing into VO2. (3) A load imbalance is the difference in current flowing from VO1 to VO2. The module can operate with a higher imbalance but with reduced specifications. (4) Output voltage ripple is measured with a 10- μF tantalum capacitor connected from VO1 (pin 5) or VO2 (pin 8), to COM (pin 6). (5) If the overvoltage threshold is exceeded by either regulated output the module will shut down, turning both outputs off. This is a latched condition, which can only by reset by removing and then re-applying the module's input power. (6) This is the free-running frequency. The module can be made to synchronize with the PTB48500 when both modules are used together in a system. (7) The On/Off Enable (pin 3) has an internal pull-up and may be controlled with an open-collector (or open-drain) transistor. The input is diode protected and may be connected to VI. The open-circuit voltage is 5 V maximum. If it is left open circuit the converter operates when input power is applied. (8) Electrolytic capacitors with very low equivalent series resistance (ESR) may induce instability when used on the output. Consult the factory before using capacitors with organic, or polymer-aluminum type electrolytes. Copyright © 2004–2007, Texas Instruments Incorporated 3 |
Similar Part No. - PTB48510_14 |
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Similar Description - PTB48510_14 |
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