Motore di ricerca datesheet componenti elettronici |
|
TS1581CZ5XXC0 Scheda tecnica(PDF) 3 Page - Taiwan Semiconductor Company, Ltd |
|
TS1581CZ5XXC0 Scheda tecnica(HTML) 3 Page - Taiwan Semiconductor Company, Ltd |
3 / 9 page TS1581 5A Dual Input LDO 3/9 Version: A07 Thermal Performance Condition Package type Typ Unit TO-220-5L 50 Thermal Resistance Junction to Ambient TO-263-5L 60 oC/W Pin Description Pin No. Pin Name Pin Description 1 Sense This pin is the positive side of the reference voltage for this device. With this pin it is possible to Kelvin Sense the output voltage at the load. 2 Adjust / Ground This pin is the negative side of the reference voltage for this device. Transient response can be improved by adding a small bypass capacitor from the adjust pin to ground. 3 Output This pin is power output of the device. 4 Control This pin is the supply pin for the control circuitry for the device. The current flow into this pin will be about 1% of the output current. For the device to regulate, the voltage at this pin must be 1.3V greater than the output voltage. 5 Power This pin is the collector of the power transistor. The output load current is supplied through this pin. The voltage at this pin must be 0.7V greater than the output voltage for the device to regulate. Application Information Application The TS1581 is a low dropout regulator designed to make used of multiple power supplies, present in most systems, to reduce the dropout voltage. One of the advantages of the two supply approach is maximizing the efficiency. The second supply is at least 1V greater than output voltage and is providing the power for the control circuitry and supplies the drive current to the NPN output transistor. This allows the NPN output transistor to be driven into saturation. For the control voltage the current requirement is small equal to about 1% of the output current or approximately 50mA for a 5A load. This drive current becomes part of the output current. The maximum voltage on the Control Pin is 15V. The maximum voltage at the Power in is 7V.By tying the control and power inputs together the TS1581 can also be operated as a single supply device. In single supply operation the dropout will be determined by the minimum control voltage. Both the fixed and adjustable versions have remote sense pins, permitting very accurate regulation of output voltage. As a result, over and output current range of 100mA to 5A, the typical load regulation is less than 1mV. For the fixed voltages the adjust pin is brought out allowing the user to improve transient response by bypassing the internal resistor divider. Optimum transient response is provided using a capacitor in the range of 0.1uF to 1uF for bypassing the adjust pin. The new generation of microprocessors cycle load current from several hundred million amperes to several amperes in tens of nanoseconds. Output voltage tolerances are tighter and include transient response as part of the specification. Designed to meet the fast current load step requirements of these microprocessors, the TS1581 also saves total cost by needing less output capacitance to maintain regulation. Typical applications for the TS1581 include 3.3V to 2.5V conversion with a 5V control supply, 5V to 4.2V conversion with a 12V control supply or 5V to 3.6V conversion with a 12V control supply. It is easy to obtain dropout voltages less than 0.5V at 1.5A along with excellent static and dynamic specifications. It is fully protected against over current and over temperature conditions. |
Codice articolo simile - TS1581CZ5XXC0 |
|
Descrizione simile - TS1581CZ5XXC0 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEETIT.COM |
Lei ha avuto il aiuto da alldatasheet? [ DONATE ] |
Di alldatasheet | Richest di pubblicita | contatti | Privacy Policy | scambio Link | Ricerca produttore 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 |