Motore di ricerca datesheet componenti elettronici |
|
L7987L Scheda tecnica(PDF) 9 Page - STMicroelectronics |
|
L7987L Scheda tecnica(HTML) 9 Page - STMicroelectronics |
9 / 41 page DocID026362 Rev 3 9/41 L7987L Electrical characteristics 41 Enable VEN Device OFF level 0.06 0.30 V Device ON level 0.35 0.90 V Soft-start TSSSETUP Soft start setup time Delay from UVLO rising to switching activity (3) 640 µs ISS CH CSS charging current VSS = GND 4.3 5.0 5.7 µA Error amplifier VFB Voltage feedback 0.792 0.800 0.808 V VFB Voltage feedback (1) 0.788 0.800 0.812 V VCOMPH VFB = GND; VSS = 3.2 V 3.2 3.35 3.5 V VCOMPL VFB = 1 V; VSS = 3.2 V 0.1 V IFB FB biasing current VFB = 3.6 V 5 50 nA IOSOURCE VFB = GND; SS pin floating; VCOMP = 2 V (3) 3.1 mA IOSINK Output stage sinking capability Unity gain buffer configuration (FB connected to COMP).COMP voltage variation due to IOSINK injection lower than ± 0.1 · VFB. (3) 5mA AV0 Error amplifier gain (3) 100 dB GBWP Unity gain buffer configuration (FB connected to COMP). No load on COMP pin. (3) 23 MHz Synchronization (fan out: 5 slave devices max.) fSYN MIN Synchronization frequency FSW floating 280 kHz VSYNOUT Master output amplitude ILOAD = 4 mA 2.45 V ILOAD = 0 A; pin SYNCH floating 3.8 VSYNOW Output pulse width ILOAD = 0 A; pin SYNCH floating 155 225 275 ns VSYNIH SYNCH slave high level input threshold 2.0 V VSYNIL SYNCH slave low level input threshold 1.0 V ISYN Slave SYNCH pull-down current VSYNCH = 5 V 400 650 900 µA VSYNIW Input pulse width 200 ns PGOOD VPGDTH PGOOD rising threshold VFB rising 0.67 0.70 0.73 V VPGDHYST PGOOD hysteresis VFB falling (3) 30 mV Table 5. Electrical characteristics (continued) Symbol Parameter Test condition Min. Typ. Max. Unit |
Codice articolo simile - L7987L |
|
Descrizione simile - L7987L |
|
|
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 |