 |
Moteur de recherche de fiches techniques de composants électroniques |
|
|
Moteur de recherche de fiches techniques de composants électroniques |
|
TPS53321 Fiches technique(PDF) 4 Page - Texas Instruments |
|
|
||||||||||||||||||||||||||||||
TPS53321 Fiches technique(HTML) 4 Page - Texas Instruments |
|
|
4 / 25 page  TPS53321 SLUSAF3 – DECEMBER 2010 www.ti.com ELECTRICAL CHARACTERISTICS over recommended free-air temperature range, VIN = 3.3 V, VVDD = 3.3 V, PGND = GND (Unless otherwise noted). PARAMETER CONDITIONS MIN TYP MAX UNIT SUPPLY: VOLTAGE, CURRENTS, and UVLO VIN VIN supply voltage Nominal input voltage range 2.9 6.0 V IVINSDN VIN shutdown current EN = 'LO' 3 µA VUVLO VIN UVLO threshold Ramp up; EN = 'HI' 2.8 V VUVLOHYS VIN UVLO hysteresis VIN UVLO Hysteresis 130 mV VDD Internal circuitry supply voltage Nominal 3.3-V input voltage range 2.9 3.3 3.5 V IDDSDN VDD shut down current EN = 'LO' 5 µA IDD Standby current EN = 'HI', no switching 2.2 3.5 mA VDDUVLO 3.3V UVLO threshold Ramp up; EN =’HI’ 2.8 V VDDUVLOHYS 3.3V UVLO hysteresis 75 mV VOLTAGE FEEDBACK LOOP: VREF AND ERROR AMPLIFIER VVREF VREF Internal precision reference voltage 0.6 V 0°C ≤ TA ≤ 85°C –1% 1% TOLVREF VREF Tolerance –40°C ≤ TA ≤ 85°C –1.25% 1.25% UGBW(1) Unity gain bandwidth 14 MHz AOL (1) Open loop gain 80 dB IFBINT FB input leakage current Sourced from FB pin 30 nA Output sinking and sourcing IEAMAX (1) CCOMP = 20 pF 5 mA current SR(1) Slew rate 5 V/µs OCP: OVERCURRENT AND ZERO CROSSING When IOUT exceeds this threshold for 4 IOCPL Overcurrent limit on upper FET consecutive cycles. VIN=3.3 V, 6.0 6.5 7.0 A VOUT=1.5 V with 1-µH inductor, TA = 25°C Immediately shut down when sensed current One time overcurrent latch off IOCPH reach this value. VIN=3.3 V, 6.25 6.80 7.35 A on the lower FET VOUT=1.5 V with 1-µH inductor, TA = 25°C tHICCUP Hiccup time interval 12.5 14.5 16.5 ms Zero crossing comparator VZXOFF (1) PGND – SW, skip mode –4.5 –3.0 –1.5 mV internal offset PROTECTION: OVP, UVP, PGD, AND INTERNAL THERMAL SHUTDOWN Overvoltage protection VOVP Measured at FB w/r/t VREF 114% 117% 120% threshold voltage Undervoltage protection VUVP Measured at FB w/r/t VREF 80% 83% 86% threshold voltage VPGDL PGD low threshold Measured at FB w/r/t VREF 80% 83% 86% VPGDU PGD upper threshold Measured at FB w/r/t VREF. 114% 117% 120% Minimum Vin voltage for valid Measured at VIN with 1-mA (or 2-mA) sink VINMINPG 1 V PGD at start up. current on PGD pin at start up THSD(1) Thermal shutdown Latch off controller, attempt soft-stop 130 140 150 °C THSDHYS (1) Thermal Shutdown hysteresis Controller restarts after temperature has dropped 40 °C (1) Ensured by design. Not production tested. 4 Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated Product Folder Link(s) :TPS53321 |
Numéro de pièce similaire - TPS53321 |
|
Description similaire - TPS53321 |
|
|
Lien URL |
| Politique de confidentialité |
| ALLDATASHEET.FR |
| ALLDATASHEET vous a-t-il été utile ? [ DONATE ] |
À propos de Alldatasheet | Publicité | Contactez-nous | Politique de confidentialité | Echange de liens | Fabricants All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
French ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
