Electronic Components Datasheet Search |
|
TPS7425D Datasheet(PDF) 11 Page - Texas Instruments |
|
|
TPS7425D Datasheet(HTML) 11 Page - Texas Instruments |
11 / 19 page TPS7415, TPS7418, TPS7425, TPS7430, TPS7433 FAST-TRANSIENT-RESPONSE USING SMALL OUTPUT CAPACITOR 200-mA LOW-DROPOUT VOLTAGE REGULATORS SLVS212 – DECEMBER 1999 11 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 APPLICATION INFORMATION The TPS74xx family includes five voltage regulators (1.5 V, 1.8 V, 2.5 V, 3 V, and 3.3 V). minimum load requirements The TPS74xx family is stable even at zero load; no minimum load is required for operation. SENSE terminal connection The SENSE terminal must be connected to the regulator output for proper functioning of the regulator. Normally, this connection should be as short as possible; however, the connection can be made near a critical circuit (remote sense) to improve performance at that point. Internally, SENSE connects to a high-impedance wide-bandwidth amplifier through a resistor-divider network and noise pickup feeds through to the regulator output. Routing the SENSE connection to minimize/avoid noise pickup is essential. Adding an RC network between SENSE and OUT to filter noise is not recommended because it can cause the regulator to oscillate. external capacitor requirements An input capacitor is not usually required; however, a ceramic bypass capacitor (1 µF or larger) improves load transient response and noise rejection if the TPS74xx is located more than a few inches from the power supply. A higher-capacitance electrolytic capacitor may be necessary if large (hundreds of milliamps) load transients with fast rise times are anticipated. Like all low dropout regulators, the TPS74xx requires an output capacitor connected between OUT and GND to stabilize the internal control loop. The minimum recommended capacitance value is 1 µF and the ESR (equivalent series resistance) must be at least 300 m Ω. Solid tantalum electrolytic and aluminum electrolytic are all suitable, provided they meet the requirements described previously. OUT 4 1 IN EN GND 6 8 7 VI 1 µF ESR VO 1 µF + TPS74xx CO IN 5 SENSE SENSE Figure 20. Typical Application Circuit regulator protection The TPS74xx PMOS-pass transistor has a built-in back diode that conducts reverse currents when the input voltage drops below the output voltage (e.g., during power down). Current is conducted from the output to the input and is not internally limited. When extended reverse voltage is anticipated, external limiting may be appropriate. TPS7430: Not Recommended For New Designs |
Similar Part No. - TPS7425D |
|
Similar Description - TPS7425D |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | 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 |
Family Site : ic2ic.com |
icmetro.com |