 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
TPS2074DBR Datasheet(PDF) 17 Page - Texas Instruments |
|
||||||||||||||||||||||||||||||
TPS2074DBR Datasheet(HTML) 17 Page - Texas Instruments |
|
|
17 / 25 page  TPS2074, TPS2075 FOUR-PORT USB HUB POWER CONTROLLERS SLVS288A – SEPTEMBER 2000 – REVISED FEBRUARY 2001 17 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TYPICAL CHARACTERISTICS 4.3 4.2 4.1 4 –50 0 50 4.4 4.45 4.5 100 150 4.35 4.25 4.15 4.05 INPUT VOLTAGE (SP UNDERVOLTAGE LOCKOUT) vs JUNCTION TEMPERATURE TJ – Junction Temperature – °C Start Threshold Stop Threshold Figure 32 APPLICATION INFORMATION external capacitor requirements A 0.1- µF ceramic bypass capacitor and a 10-µF bulk capacitor between BP and AGND, close to the device, are recommended. Similarly, a 0.1- µF ceramic and a 68-µF bulk capacitor, from SP to AGND, and from VEXT to AGND if an external 5-V LDO is required, are recommended because of much higher current in the self-powered mode. From each of the outputs (OUTx) to ground, a 33- µF or higher valued bulk capacitor is recommended when the output load is heavy. This precaution reduces power-supply transients. Additionally, bypassing the outputs with a 0.1- µF ceramic capacitor improves the immunity of the device to short-circuit transients. An output capacitor connected between 3.3V_OUT and GND is required to stabilize the internal control loop. The internal LDO is designed for a capacitor range of 4.7 µF to 33 µF with an ESR of 0.2 Ω to 10 Ω. Solid tantalum-electrolytic, aluminum-electrolytic, and multilayer ceramic capacitors are all suitable. Ceramic capacitors have different types of dielectric material, each exhibiting different temperature and voltage variations. The most common types are X5R, X7R, Y5U, Z5U, and NPO. The NPO type ceramic capacitors are generally the most stable over temperature. However, the X5R and X7R are also relatively stable over temperature (with the X7R being the more stable of the two) and are therefore acceptable for use. The Y5U and Z5U types provide high capacitance in a small geometry, but exhibit large variations over temperature. For this reason, the Y5U and Z5U are not generally recommended. |
Similar Part No. - TPS2074DBR |
|
Similar Description - TPS2074DBR |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
