Datasheet

LTC2954
5
2954fb
PB Power-Down Debounce Time
(t
PD,MIN
+ t
PDT
) vs PDT External
Capacitance
PDT Pull-Up Current
vs Temperature
PB Current vs PB Voltage
PB Voltage vs External PB
Resistance to Ground
EN/EN V
OL
vs Current Load
EN (LTC2954-2) Voltage vs V
IN
EN (LTC2954-1) Voltage vs V
IN
Internal Default PB Power-Down
Debounce Time (t
PD,MIN
) vs V
IN
TYPICAL PERFORMANCE CHARACTERISTICS
2954 G07
V
IN
(V)
0
5
10 15 20 25 30
t
PD, MIN
(ms)
70
60
40
50
30
20
10
0
T
A
= 25°C
2954 G08
1
t
PD, MIN
+ t
PDT
(ms)
100
1000
1000
10
10
100
10000
T
A
= 25°C
V
IN
= 3.3V
PDT EXTERNAL CAPACITANCE (nF)
2954 G09
TEMPERATURE (°C)
–50
–25
0 25 50 75 100
PDT PULL-UP CURRENT (μA)
–3.4
–3.2
–3.0
–2.8
–2.6
V
IN
= 26.4V
V
IN
= 2.7V
2954 G10
PB CURRENT (μA)
–10010
20
30–5 5
15
25
–250
–200
–150
–100
–50
0
PB VOLTAGE (V)
T
A
= 25°C
V
IN
= 3.3V
2954 G11
0
0
50
100
150
200
250
300
5101520
V
IN
= 3.3V
T
A
= 25°C
PB VOLTAGE (mV)
EXTERNAL PB RESISTANCE TO GROUND (kΩ)
T
A
= –45°C
T
A
= 100°C
2954 G13
V
IN
(V)
0
EN (V)
4
1
2
3
T
A
= 25°C
100k PULL-UP FROM EN TO V
IN
1.0
0.8
0.6
0.4
0.2
0
2954 G14
EN (V)
V
IN
(V)
04
1
2
3
4
3
2
1
0
T
A
= 25°C
100k PULL-UP FROM EN TO V
IN
2954 G12
EN/EN CURRENT LOAD (mA)
0.0
EN/EN VOLTAGE (mV)
600
500
400
300
200
100
0
2.0
0.5
1.0
1.5
2.5
T
A
= 25°C
V
IN
= 3.3V