 |
Moteur de recherche de fiches techniques de composants électroniques |
|
|
Moteur de recherche de fiches techniques de composants électroniques |
|
LM3262 Fiches technique(PDF) 5 Page - Texas Instruments |
|
||||||||||||||||||||||||||||||
LM3262 Fiches technique(HTML) 5 Page - Texas Instruments |
|
|
5 / 27 page  LM3262 www.ti.com SNVS875N – AUGUST 2012 – REVISED MARCH 2013 SYSTEM CHARACTERISTICS The following spec table entries are specified by design and verifications providing the component values in the Typical Application Circuit are used. These parameters are not verified by production testing. Min and Max values apply over the full operating ambient temperature range ( −30°C ≤ TA ≤ 90°C) and over the VIN range = 2.5V to 5.5V unless otherwise specified. L = 0.5 µH, DCR = 50 m Ω, CIN = 10 µF, 6.3V, 0402(1005), COUT = 4.7 µF, 6.3V, 0402 (1005). For bench evaluation, see (1). Symbol Parameter Condition Min Typ Max Units VOUT rise time VIN = 3.7V, VOUT = 1.4V to 3.4V 5 VCON change to 90% 0.1 µs < VCON_TR < 1 µs, RL = 12Ω TVCON_TR µs VOUT fall time VIN = 3.7V, VOUT = 3.4V to 1.4V 5 VCON change to 10% 0.1 µs < VCON_TF < 1 µs, RL = 12Ω D Maximum Duty cycle 100 % 2.5V ≤ VIN ≤ 5.5V 800 2.5 x VCON ≤ VIN – 285 mV Maximum output current IOUT mA capability 2.5V ≤ VIN ≤ 5.5V 1000 2.5 x VCON ≥ VIN – 165 mV, Bypass mode VOUT −3 +3 % VCON range 0.16V to 1.44V 0mA ≤ IOUT ≤ 800 mA (2) Linearity −50 +50 mV Turn-on time (time for output EN = Low to High to reach 95% final value TON VIN = 4.2V, VOUT = 3.4V 50 µs after Enable low-to-high IOUT = < 1mA, COUT = 4.7 µF transition) Auto Bypass Detect TBP, NEG Negative Threshold Delay (3) 10 Time µs TBP, POS Auto Bypass Detect Positive (4) 0.1 Threshold Delay Time VIN = 3.8V, VOUT = 0.8V 71 IOUT = 10 mA, ECO mode VIN = 3.8V, VOUT = 2.5V η Efficiency 92 % IOUT = 200 mA, PWM mode VIN = 3.8V, VOUT = 3.4V 93 IOUT = 500 mA, PWM mode VIN = 3.6V to 4.2V, TR = TF = 10 µs, LINE TR Line transient response 50 IOUT = 100 mA, VOUT = 0.8V mVpk VIN = 3.1/3.6/4.5V, VOUT = 0.8V, LOAD TR Load transient response IOUT = 50 mA to 150 mA 50 TR = TF = 1.0 µs (1) When the LM3262 is being evaluated apart from a normal system design or on a PCB other than the TI LM3262 evaluation module, user should ensure that a 50 to 100 µF ceramic input capacitor is added to the PCB to keep input voltage from sagging during rapid load transitions. (2) Linearity limits are ±3% or ±50 mV, whichever is larger. VOUT is monotonic in nature with respect to VCON input. (3) Entering Bypass Mode, VIN is compared to the programmed output voltage (2.5 x VCON). When VIN−(2.5 x VCON) falls below VBP,NEG longer than TBP,NEG, the Bypass FET turns on, and the switching FET turns on. (4) Bypass Mode is exited when VIN−(2.5 x VCON) exceeds VBP,POS longer than TBP,POS, and PWM mode resumes. The hysteresis for the bypass detection threshold VBP,POS − VBP,NEG will always be positive and will be approximately 50 mV. Copyright © 2012–2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM3262 |
Numéro de pièce similaire - LM3262_15 |
|
Description similaire - LM3262_15 |
|
|
Lien URL |
| Politique de confidentialité |
| ALLDATASHEET.FR |
| ALLDATASHEET vous a-t-il été utile ? [ DONATE ] |
À propos de Alldatasheet | Publicité | Contactez-nous | Politique de confidentialité | Echange de liens | Fabricants 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 |
French ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
