Electronic Components Datasheet Search |
|
PT7M8202B31CE Datasheet(PDF) 7 Page - Pericom Semiconductor Corporation |
|
PT7M8202B31CE Datasheet(HTML) 7 Page - Pericom Semiconductor Corporation |
7 / 11 page ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 12-07-0004 PT0338-1 07/10/12 7 PT7M8202 LDO Regulator Function block diagram Functional Description (Refer to Function Block Diagram) Output Voltage The divided output voltage is compared with the internal reference voltage by the error amplifier with internal phase compensator. The output of the error amplifier then drives the P-channel MOSFET to maintain a stable and constant output voltage. Low ESR Capacitors The internal phase compensator maintains the stable output voltage with low ESR ceramic input and output capacitors. 1F low ESR (X5R/X7R) ceramic capacitor located as close as possible to the IC’s pins is recommended. Current Limit and Thermal Shutdown Protections Current limit protection is used to limit the output current when an overload condition occurs. As a result, the output voltage will drop. Thermal shutdown protection will turn off the output to reduce the power dissipation when the operation junction temperature exceeds 170°C. Bypass Capacitor and Low Noise A 22nF between the BP pin and GND pin significantly reduces noise on the regulator output, it is critical that the capacitor connection between the BP pin and GND pin be direct and PCB traces should be as short as possible. There is a relation ship between the bypass capacitor value and the LDO regulator turn on time. DC leakage on this pin can affect the LDO regulator output noise and voltage regulation performance. EN Pin The output of the regulator in PT7M8202A/B can be controlled with EN pin. The EN pin should be connected to a “VIN” or a “GND” voltage as a floating input applied to inverter input of the enable circuitry will increase the current consumption. NOTE ON USE 1. Please use this IC within the stated absolute maximum ratings. 2. Where wiring impedance is high, operations may become unstable due to noise and/or phase lag depending on output current. Please keep the resistance low between VIN and GND wiring in particular. 3. Please wire the input capacitor (Cin) and the output capacitor (Cout) as close to the IC as possible. Over-current Protectio n Circuit ON/OFF C ircuit R ef erence Volta g e C ircuit EN VIN VOUT GND Q uick Sta rt BP Over-current/Over Temperature Protection Circuit ON/OFF Circuit Quick Start Reference Voltage Circuit |
Similar Part No. - PT7M8202B31CE |
|
Similar Description - PT7M8202B31CE |
|
|
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 |
Family Site : ic2ic.com |
icmetro.com |