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PTN78060WAZ Datasheet(PDF) 3 Page - Texas Instruments |
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PTN78060WAZ Datasheet(HTML) 3 Page - Texas Instruments |
3 / 26 page ELECTRICAL CHARACTERISTICS PTN78060W, PTN78060H www.ti.com................................................................................................................................................... SLTS229B – NOVEMBER 2004 – REVISED JUNE 2009 operating at 25°C free-air temperature, VI = 20 V, VO = 5 V, IO = IO (max), CI = 2.2 µF, CO = 100 µF (unless otherwise noted) PTN78060W PARAMETER TEST CONDITIONS MIN TYP MAX UNIT IO Output current TA = 85°C, natural convection airflow 0 3 A VI Input voltage range Over IO range 7 (1) 36 (2) V Set-point voltage tolerance TA = 25°C ±2%(3) Temperature variation –40°C to +85°C ±0.5% Line regulation Over VI range ±10 mV VO Load regulation Over IO range ±10 mV Includes set point, line, load Total output voltage variation ±3% (3) –40 < TA < 85°C VI < 12 V 2.5 VI – 2 12 V ≤ VI ≤ 15.1 V 2.5 VI – 2.5 VO (adj) Output voltage adjust range V 15.1 V < VI ≤ 25 V 2.5 12.6 VI > 25 V 0.1 × VI 12.6 VI = 24 V, IO = 3 A RSET = 732 Ω, VO = 12 V 94% η Efficiency RSET = 21 kΩ, VO = 5 V 86% RSET = 78.7 kΩ, VO = 3.3 V 82% Output voltage ripple 20-MHz bandwidth 1% VO V(PP) IO (LIM) Current limit threshold ΔVO = –50 mV 5.5 A 1-A/µs load step from 50% to 100% IOmax Transient response Recovery time 100 µs VO over/undershoot 5 %VO Input high voltage (VIH) 1 Open (4) V Inhibit control (pin 3) Input low voltage (VIL) –0.1 0.3 Input low current (IIL) 0.25 mA II(stby) Input standby current Pin 3 connected to GND 17 mA FS Switching frequency Over VI and IO ranges 440 550 660 kHz CI External input capacitance 2.2 (5) µF Ceramic or nonceramic 100 (6) Ceramic 200 µF CO External output capacitance Nonceramic 2,000 Equivalent series resistance (nonceramic) 10 (7) m Ω Per Telcordia SR-332, 50% stress, MTBF Calculated reliability 8.9 106 Hr TA = 40°C, ground benign (1) For output voltages less than 10 V, the minimum input voltage is 7 V or (VO + 2) V, whichever is greater. For output voltages of 10 V and higher, the minimum input voltage is (VO + 2.5) V. See the Application Information section for further guidance. (2) For output voltages less than 3.6 V, the maximum input voltage is 10 × VO . See the Application Information section for further guidance. (3) The set-point voltage tolerance is affected by the tolerance and stability of RSET. The stated limit is unconditionally met if RSET has a tolerance of 1% with 100 ppm/°C or better temperature stability. (4) This control pin has an internal pullup, and if left open-circuit, the module operates when input power is applied. The open-circuit voltage is typically 1.5 V. A small, low-leakage (< 100 nA) MOSFET is recommended for control. An external pull-up resistor should not be used. See the Application Information for further guidance. (5) An external 2.2-µF ceramic capacitor is required across the input (VI and GND) for proper operation. Locate the capacitor close to the module. (6) 100 µF of output capacitance is required for proper operation. See the Application Information section for further guidance. (7) This is the typical ESR for all the electrolytic (nonceramic) capacitance. Use 17 m Ω as the minimum when using max-ESR values to calculate. Copyright © 2004–2009, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s): PTN78060W PTN78060H |
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