ADC 2 Spécifications Page 20
- Page / 34
- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
LTC4261/LTC4261-2
20
42612fd
For more information www.linear.com/LTC4261
Figure 8. Adjustment of Undervoltage Thresholds
for Larger (8a) or Smaller (8b) Hysteresis
present bit A1 and the undervoltage fault bit B1. The
power good signals at PG and PGIO are also reset.
The undervoltage present bit A1 is cleared when the
UVH pin rises above 2.56V and the UVL pin rises above
2.291V + dV
UV
. After a delay of t
D
, the FET will turn on
again unless the undervoltage auto-retry has been dis-
abled by clearing bit D1.
When power is applied to the device, if UVL is below
the 2.291V threshold and UVH is below 2.56V –
d
V
UV
after INTV
CC
crosses its undervoltage lock out threshold
(4.25V), an undervoltage fault will be logged in the fault
register.
Because of the compromises of selecting from a table of
discrete resistor values (1% resistors in 2% increments,
0.1% resistors in 1% increments), best possible OV and
UV accuracy is achieved using separate dividers for each
pin. This increases the total number of resistors from
three or four to as many as six, but maximizes accuracy,
greatly simplifies calculations and facilitates running
changes to accommodate multiple standards or custom
-
ization without any board changes.
T
o improve noise immunity
, put the resistive divider to
the UV and OV pins close to the chip and keep traces to
RTN and V
EE
short. A 0.1µF capacitor from the UVH or
UVL pin (and OV pin through resistor R2) to V
EE
helps
reject supply noise.
FET Short Fault
A FET short fault will be reported if the data converter mea
-
sures a current sense voltage greater than or equal to 2mV
while the FET is turned off. This condition sets the FET
short present bit A5 and the FET short fault bit B5.
Power Bad Fault
After the FET is turned on and the power good outputs
pull PG and PGIO low
, a delay timer with duration of 4t
D
is
started and the level of the PGI pin is checked (Figure 3).
If the PGI pin is pulled below its 1.4V threshold before
the PGI check timer expires, the FET will remain on.
Otherwise, the FET is immediately turned off, the power
good signals are reset and the power bad present bit A3
and the power bad fault bit B3 are set. After the FET is
turned off, the power bad present bit A3 will be cleared.
If the PGI pin is subsequently pulled low, the FET will
remain off unless the power bad auto-retry has been en
-
abled by setting bit D4 or the power bad fault bit B3 is
cleared. In either of those two conditions, the FET will
turn on again following a delay of t
D
and the PGI pin is
checked again as described above.
External Fault Monitors
The FLTIN pin (SSOP only) and the PGIO pin, when con
-
figured as general purpose input, allow monitoring of ex-
ternal fault conditions such as broken fuses. If FLTIN is
pulled below its 1.4V threshold, bit B7 in the F
AUL
T reg-
ister is set. An associated alert bit, C7, is also available
in the ALER
T register
. When the PGIO pin is configured
as general purpose input, if the voltage at PGIO is above
1.25V, both bit A6 in the STATUS register and bit B6 in
the FAULT register are set, though there is no alert bit as
-
sociated with this fault. The external fault conditions do
not directly affect the GA
TE control functions.
Fault Alerts
When any of the fault bits in F
AULT register B is set, an
optional bus alert can be generated by setting the appropri
-
ate bit in the ALERT register C. This allows only selected
faults to generate alerts. At power
-up the default state is not
to alert on faults. If an alert is enabled, the corresponding
APPLICATIONS INFORMATION
R3
453k
1%
UVL
TURN-ON = 46V
TURN-OFF = 38.5V
HYSTERESIS = 7.5V
–48V RTN
(8a)
V
EE
V
EE
R
H
1.91k
1%
UVH
R2
15k
1%
R1
11.8k
1%
0V
R3
453k
1%
UVH
TURN-ON = 43V
TURN-OFF = 41.2V
HYSTERESIS = 1.8V
–48V RTN
(8b)
R
H
1.91k
1%
UVL
R2
15k
1%
R1
11.8k
1%
0V
42612 F08
- C and ADC 1
- Start-Up Behavior 1
- ORDER INFORMATION 2
- ABSOLUTE MAXIMUM RATINGS 2
- PIN CONFIGURATION 2
- ELECTRICAL CHARACTERISTICS 3
- LTC4261/LTC4261-2 10
- PIN FUNCTIONS 10
- BLOCK DIAGRAM 11
- OPERATION 12
- APPLICATIONS INFORMATION 13
- TYPICAL APPLICATION 31
- PACKAGE DESCRIPTION 31
- REVISION HISTORY 33
- TYPICAL APPLICATIONS 34
- RELATED PARTS 34
Produits connexes et manuels pour Mise en réseau ADC 2
Mise en réseau ADC H2TU-C-231 Spécifications
(90 pages)
(90 pages)
Mise en réseau ADC 400F Spécifications
(26 pages)
(26 pages)
Mise en réseau ADC 2 Manuel d'utilisateur
(24 pages)
(24 pages)
Mise en réseau ADC 6 Manuel d'utilisateur
(12 pages)
(12 pages)
Mise en réseau ADC MM701G2 Manuel d'utilisateur
(134 pages)
(134 pages)
Mise en réseau ADC 320F Manuel d'utilisateur
(68 pages)
(68 pages)
Mise en réseau ADC MM701G Manuel d'utilisateur
(108 pages)
(108 pages)
Mise en réseau ADC MM701G Manuel d'utilisateur
(168 pages)
(168 pages)
Mise en réseau ADC 400F Manuel
(74 pages)
(74 pages)
Asus P5E-VM SE manuali
Manuali dei proprietari e guide per l'utente per Scheda madre Asus P5E-VM SE.
We fornisce 2 manuali pdf Asus P5E-VM SE per scaricare gratuitamente in base al tipo di documento: Manuale Utente
Asus P5E-VM SE Manuale Utente (102 pagine)
Marchio: Asus | Categoria: Motherboard | Dimensione: 2.96 MB |
Indice
Informations
13
Green ASUS
16
ASUS EZ DIY
17
AI Booster
18
P5E-VM SE
21
Couvercle
25
1.9 Jumper
39
IE1394_2
45
CHA_FAN1
46
+5VSB_MB
47
(Default)
47
Sous DOS
55
Sous Windows
55
Type [Auto]
64
2.4.7 PCIPnP
77
Support
91
Filelist
98
A.1 Intel
100
Hyper-Threading
102
Asus P5E-VM SE Manuale Utente (102 pagine)
Marchio: Asus | Categoria: Motherboard | Dimensione: 3.68 MB |
Indice
Contents
3
1.1 Welcome!
14
Green ASUS
16
ASUS EZ DIY
17
P5E-VM SE
21
Load plate
25
CPU notch
25
Fastener
26
Narrow end
26
1.9 Jumper
39
IE1394_2
45
CHA_FAN1
46
+5VSB_MB
47
(Default)
47
Type [Auto]
64
2.4.7 PCIPnP
77
Filelist
98
A.1 Intel
100
A.3 Intel
102
Più prodotti e manuali per Scheda madre Asus
| Modelli | Tipo di Documento |
|---|---|
| P4V800-X |
Manuale Utente
   
Asus P4V800-X User Manual,
16 pagine
|
| SK8V |
Manuale Utente
Asus SK8V User Manual,
134 pagine
|
| A8V-E SE |
Manuale Utente
Asus A8V-E SE User Manual,
88 pagine
|
| Maximus IV Extreme-Z |
Manuale Utente
Asus Maximus IV Extreme-Z User Manual,
196 pagine
|
| P5G41T-M LX3 PLUS |
Manuale Utente
Asus P5G41T-M LX3 PLUS User Manual,
60 pagine
|
| M5A78L-M/USB3 |
Manuale Utente
Asus M5A78L-M/USB3 Benutzerhandbuch,
64 pagine
|
| M2N-X |
Manuale Utente
 
Asus M2N-X User Manual,
38 pagine
|
| Motherboard |
Manuale Utente
Asus Motherboard User Manual,
721 pagine
|
| P8H67-M PRO |
Manuale Utente
Asus P8H67-M PRO Benutzerhandbuch,
77 pagine
|
| P5KPL SE |
Manuale Utente
Asus P5KPL SE User Manual,
38 pagine
|
| P5KPL-AM/PS |
Manuale Utente
Asus P5KPL-AM/PS Manuel d'utilisation,
29 pagine
|
| M4A78L-M |
Manuale Utente
Asus M4A78L-M Manuel d'utilisation,
64 pagine
|
| P5P41T LE |
Manuale Utente
Asus P5P41T LE User Manual,
41 pagine
|
| P5K Deluxe/WiFi-AP |
Manuale Utente
Asus P5K Deluxe/WiFi-AP User Manual,
59 pagine
|
| P4GE-VM |
Manuale Utente
Asus P4GE-VM User Manual,
64 pagine
|
| P5QPL-VM |
Manuale Utente
Asus P5QPL-VM User Manual,
102 pagine
|
| P5K-E/WiFi-AP |
Manuale Utente
Asus P5K-E/WiFi-AP User Manual,
172 pagine
|
| P5N32-SLI Premium |
Manuale Utente
Asus P5N32-SLI Premium User Manual,
114 pagine
|
| M3N-HD HDMI |
Manuale Utente
Asus M3N-HD HDMI Benutzerhandbuch,
164 pagine
|
| M4N78 SE |
Manuale Utente
Asus M4N78 SE User Manual,
58 pagine
|
© 2020, manymanuals.fr. Tous droits réservés | 0.032 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Commentaires sur ces manuels