поискавой системы для электроныых деталей |
|
LM3280 датащи(PDF) 4 Page - Texas Instruments |
|
|
LM3280 датащи(HTML) 4 Page - Texas Instruments |
4 / 27 page LM3280 SNOSAU4B – OCTOBER 2006 – REVISED FEBRUARY 2013 www.ti.com General Electrical Characteristics (1) (2) (3) Limits in standard typeface are for TA = TJ = 25°C. Limits in boldface type apply over the full operating ambient temperature range ( −30°C ≤ TA = TJ ≤ +85°C). Unless otherwise noted, specifications apply to the LM3280 with: VIN = ( SVIN = PVIN = ) 3.6V, ENBUCK = 3.6V, ENLDO1 = ENLDO2 = ENLDO3 = BYP = 0V, FB = 2V, VCON = 0.267V. Symbol Parameter Conditions Min. Typ. Max Units IQ Shutdown Supply Current ENBUCK = 0V, 0.1 3 µA FB = SW = VCON = 0V, BYPOUT = 0V No Load Supply Current ENBUCK = 3.6V, 720 800 µA BYPOUT = 0V ENBUCK = 3.6V, 920 1300 µA BYPOUT = 0V, ENLDO1 = 3.6V ENBUCK = BYP = 3.6V 720 800 µA ENBUCK = BYP = 3.6V, 920 1300 µA ENLDO1 = 3.6V VIH Logic High Input Threshold Voltage for FB = 0V 1.2 V ENx, BYP VIL Logic Low Input Threshold Voltage for FB = 0V 0.4 V ENx, BYP IPDWN Logic Input Pull Down Current for ENx, ENx, BYP = 3.6V 5 10 µA BYP THSD Thermal Shutdown Temperature (2) 150 °C Hysteresis Temperature (2) 25 °C (1) All voltages are with respect to the potential at the GND pins. (2) Min and Max limits are guaranteed by design, test, or statistical analysis. Typical numbers are not guaranteed, but do represent the most likely norm. (3) The LM3280 is designed for mobile phone applications where turn-on after power-up is controlled by the system controller and where requirements for a small package size overrule increased die size for internal Under Voltage Lock-Out (UVLO) circuitry. Thus, it should be kept in shutdown by holding the EN pin low until the input voltage exceeds 2.7V. Buck Electrical Characteristics (1) (2) (3) Limits in standard typeface are for TA = TJ = 25°C. Limits in boldface type apply over the full operating ambient temperature range ( −30°C ≤ TA = TJ ≤ +85°C). Unless otherwise noted, specifications apply to the LM3280 with: VIN = ( SVIN = PVIN = ) 3.6V, ENBUCK = 3.6V, ENLDO1 = ENLDO2 = ENLDO3 = BYP = 0V, FB = 2V, VCON = 0.267V. Symbol Parameter Conditions Min. Typ. Max Units VFB_ MIN Feedback Voltage at Minimum Setting VCON = 0.267V 0.75 0.800 0.85 V VFB_ MAX Feedback Voltage at Maximum Setting VCON = 1.20V, VIN = 4.2V 3.528 3.600 3.672 V OVP Over-Voltage Protection Threshold (4) 330 400 mV VBYPASS− Auto Bypass Detection Negative (5) 160 250 320 mV Threshold VBYPASS+ Auto Bypass Detection Positive (5) 350 450 540 mV Threshold RDSON (P) Pin-Pin Resistance for PFET ISW = 500mA, FB = 0V 320 450 m Ω RDSON (N) Pin-Pin Resistance for N-FET ISW = - 200mA 310 450 m Ω RDSON (BYP) Pin-Pin Resistance for Bypass FET IBYPOUT = 500mA 85 120 m Ω (1) All voltages are with respect to the potential at the GND pins. (2) Min and Max limits are guaranteed by design, test, or statistical analysis. Typical numbers are not guaranteed, but do represent the most likely norm. (3) Shutdown current includes leakage current of PFET and Bypass FET. (4) Over-Voltage protection (OVP) threshold is the voltage above the nominal VOUT where the OVP comparator turns off the PFET switch while in PWM mode. (5) SVIN is compared to the programmed output voltage (VOUT). When SVIN – VOUT falls below VBYPASS− for longer than TBYP the Bypass FET turns on and the switching FETs turn off. This is called the Bypass mode. The device comes out of Bypass mode when SVIN – VOUT exceeds VBYPASS + for longer than T BYP, and PWM mode returns. The hysteresis for the bypass detection threshold VBYPASS + – VBYPASS− will always be positive and will be approximately 200mV (typ.). 4 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Product Folder Links: LM3280 |
Аналогичный номер детали - LM3280 |
|
Аналогичное описание - LM3280 |
|
|
ссылки URL |
Конфиденциальность |
ALLDATASHEETRU.COM |
Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | обмен ссыками | поиск по производителю 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 |