Linear Technology LTC2955IDDB-1 PB On/Off Controller with Automatic Turn On (EN output) DC1836A-A DC1836A-A Fiche De Données
Codes de produits
DC1836A-A
LTC2955
4
2955f
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Timing
t
DB(ON)
PB, ON Turn-On Debounce Time
PB, ON Falling
→ Enable Asserted
l
19
32
45
ms
t
DB(OFF)
PB Interrupt Debounce Time
PB Falling
→ INT Falling
l
19
32
45
ms
t
TMR
Additional Turn-Off Debounce Time
C
TMR
= 2200pF
l
5.8
11.5
17.2
ms
t
INT(MIN)
Minimum INT Pulse Width
INT Falling
→ TMR Rising
l
19
32
45
ms
t
ON(PD)
ON Interrupt Delay
ON Falling
→ INT Falling, V
SEL
> 0.8V
l
200
μs
t
PGD(PD)
PGD Propagation Delay
ON Falling
→ PGD Falling
l
200
μs
t
KILL(PD)
KILL Propagation Delay
KILL Falling
→ Enable Released
l
60
μs
t
KILL(PW)
KILL Minimum Pulse Width
l
60
μs
t
KILL(ON BLANK)
KILL Turn-On Blanking (Note 4)
KILL Low, Enable Asserted
→ Enable
Released
l
304
512
720
ms
t
EN(LOCK OUT)
EN/EN Lockout Time (Note 5)
Enable Released
→ Enable Asserted
l
0.6
1
1.4
s
ELECTRICAL CHARACTERISTICS
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 7V unless otherwise noted. (Note 2)
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All currents into pins are positive; all voltages are referenced to
GND unless otherwise noted.
GND unless otherwise noted.
Note 3: Guaranteed by design, not subject to test.
Note 4: The KILL turn-on blanking time is the waiting period immediately
after the enable output is asserted. This blanking time allows sufficient
time for the regulator and the μP to perform power-up tasks. The KILL, PB,
and ON inputs are ignored during this period.
after the enable output is asserted. This blanking time allows sufficient
time for the regulator and the μP to perform power-up tasks. The KILL, PB,
and ON inputs are ignored during this period.
Note 5: The enable lockout time is the waiting period immediately after the
enable output is released. It allows an application to properly power-down
such that the next power-up sequence starts from a consistent powered
down configuration. PB and ON are ignored during this period.
enable output is released. It allows an application to properly power-down
such that the next power-up sequence starts from a consistent powered
down configuration. PB and ON are ignored during this period.
TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current vs Temperature
Supply Current vs Supply Voltage
Undervoltage Lockout vs
Temperature
Temperature
V
IN
= 7V, T
A
= 25°C, unless otherwise noted.
TEMPERATURE (°C)
–50
V
UVL
(V)
1.10
1.12
1.14
1.20
1.16
0
50
75
2955 G03
1.18
–25
25
100
125
TEMPERATURE (°C)
–50
I
VIN
(μA)
0.8
1.0
1.1
1.2
1.6
1.3
0
50
75
2955 G01
0.9
1.4
1.5
–25
25
100
125
V
IN
(V)
0
I
VIN
(μA)
0.6
0.8
1.0
1.2
10
20
25
2955 G02
1.4
1.6
5
15
30
40
35
T
A
= –40°C
T
A
= 25°C
T
A
= 85°C