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TPS60141 Fiches technique(PDF) 6 Page - Texas Instruments |
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TPS60141 Fiches technique(HTML) 6 Page - Texas Instruments |
6 / 18 page TPS60140, TPS60141 LOW POWER DC-DC CONVERTER REGULATED 5 V, 100-mA CHARGE PUMP VOLTAGE TRIPLER SLVS273– FEBRUARY 2000 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 low-battery detector (TPS60140 only) (continued) Formulas to calculate the resistive divider for low battery detection, with V(LBI) = 1.15 V to 1.27 V: R2 + 1MΩ x V LBI V Bat R1 + 1MΩ –R2 Formulas to calculate the minimum and maximum trip voltage: V trip(min) + V LBI(min) R1 (min) ) R2 (max) R2 (max) V trip(max) + V LBI(max) R1 (max) ) R2 (min) R2 (min) Table 1. Recommended Values for the Resistive Divider From the E96 Series ( ±1%) VI/V R1/k Ω R2/k Ω V(TRIP)MIN/V V(TRIP)MAX/V 1.8 357 732 1.700 1.902 1.9 365 634 1.799 2.016 2.0 412 634 1.883 2.112 2.1 432 590 1.975 2.219 2.2 442 536 2.080 2.338 power-good detector (TPS60141) The PG terminal is an open-drain output that is pulled low when the output is out of regulation. When the output rises to typically 90% of its nominal voltage, the power-good output is released. Power-good is high impedance in shutdown. In normal operation an external pullup resistor must be connected between PG and OUT. The resistor should be in the 100 k Ω to 1 MΩ range. If the power-good function is not used, the PG terminal should remain unconnected. absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†‡ Supply voltage range at IN to GND and PGND –0.3 V to 3.6 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage range, at OUT, ENABLE, LBI, LBO, PG, FB to GND and PGND –0.3 V to 5.4 V . . . . . . . . . . . . . . . . . . Voltage range at C1 + TO GND –0.3 V to (VO + 0.3 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage range at C1– TO GND –0.3 V to (VI + 0.3 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage range at C2 + TO GND –0.3 V to (VO + 0.3 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage range at C2– TO GND –0.3 V to (VI + 0.3 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous output current 150 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range, Tstg –55 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maximum junction temperature, TJ 150 °C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. ‡ V(ENABLE), V(LBI), V(LBO), and V(PG) can exceed VI up to the maximum rated voltage without increasing the leakage current drawn by these inputs. (1) (2) (3) (4) |
Numéro de pièce similaire - TPS60141 |
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Description similaire - TPS60141 |
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