Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
TPS61232DRCT Datasheet(PDF) 10 Page - Texas Instruments |
|
|
TPS61232DRCT Datasheet(HTML) 10 Page - Texas Instruments |
10 / 31 page ÷ ø ö ç è æ + ´ = ÷ ø ö ç è æ + ´ = 2 REN 1 REN 1 V 19 . 1 2 REN 1 REN 1 V V ON _ EN _ TH ON _ IN ÷ ø ö ç è æ + + ´ = ÷ ø ö ç è æ + + ´ = 3 REN 2 REN 1 REN 1 V 14 . 1 3 REN 2 REN 1 REN 1 V V OFF _ EN _ TH OFF _ IN EN Comparator REF ON/ OFF EN Threshold/ Hysteresis EN HYS VIN REN1 REN2 REN3 TPS61230, TPS61231, TPS61232 SLVSAQ2C – JANUARY 2014 – REVISED OCTOBER 2014 www.ti.com Feature Description (continued) 8.3.4 Undervoltage Lockout An under voltage lockout is implemented to avoid mis-operation of the device at low input voltages. It shuts down the device with voltages lower than VUVLO. Use the HYS pin to configure a new undervoltage lockout threshold and hysteresis shown in Figure 10 and Equation 3. The new thresholds must be higher than VUVLO; otherwise it does not work. The devices holds the HYS pin low until the EN voltage rises above VEN_TH_ON. Then, the HYS pin goes high impedance. Figure 10. EN Comparator threshold and hysteresis setting (3) 8.3.5 Output Capacitor Discharge, TPS61231 To make sure the device starts up under defined conditions, the output capacitor of the TPS61231 gets discharged by the VOUT pin with a typical discharge resistor of RDIS in the cases when the device gets disabled by the EN pin, thermal shutdown, and undervoltage lockout. 8.3.6 Power Good Output The PG output is low when the output voltage is below 90% of its nominal value. The PG pin becomes high impedance once the output is higher than 95% of its nominal voltage. The PG pin is an open drain output and is specified to sink up to 500 µA. This PG output requires a pull-up resistor that cannot be connected to any voltage higher than 5.5 V. PG is held low when the device is disabled by the EN pin and thermal shutdown. 8.3.7 Over Voltage Protection The device stops switching as soon as the output voltage exceeds VOVP. When the output voltage falls 0.15V below the OVP threshold, the device resumes normal operation until the output voltage exceeds the OVP threshold again. 8.3.8 Thermal Shutdown The device goes into thermal shutdown and stops switching once the junction temperature exceeds TJSD. Once the junction temperature falls below the threshold, it returns to normal operation automatically. 10 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated Product Folder Links: TPS61230 TPS61231 TPS61232 |
Número de pieza similar - TPS61232DRCT |
|
Descripción similar - TPS61232DRCT |
|
|
Enlace URL |
Política de Privacidad |
ALLDATASHEET.ES |
¿ALLDATASHEET es útil para Ud.? [ DONATE ] |
Todo acerca de Alldatasheet | Publicidad | Contáctenos | Política de Privacidad | Intercambio de Enlaces | Lista de Fabricantes 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 |