Datasheet

LTC4361-1/LTC4361-2
4
436112fb
Typical perFormance characTerisTics
PWRGD Voltage
vs PWRGD Current
GATE Off Propagation Delay
vs Overdrive
Normal Start-Up Sequence GATE Slow Ramp-Up Entering Sleep Mode
Input Supply Current
vs Input Voltage GATE Drive vs GATE Current
GATE Fast Pull-Down Current
vs Temperature
V
IN
(V)
1
0.1
I
IN
(µA)
1
100
1000
10000
100
436112 G01
10
10
V
ON
= 0V
V
ON
= 2.5V
I
GATE
(µA)
0
0
∆V
GATE
(V)
4
3
2
1
6
7
8
4
8
10 12
436112 G02
5
2 6
V
IN
= 5V
V
IN
= 3V
V
IN
= 2.5V
TEMPERATURE (°C)
–50
20
I
GATE(FST)
(mA)
25
30
35
40
–25 0 25
V
IN
= 6V
V
GATE
= 9V
50
436112 G03
75 125100
I
PWRGD
(mA)
0
0
V
PWRGD(OL)
(mV)
200
100
300
400
500
1 2 3 4
436112 G04
5
V
OVDRV
(V)
0
0
t
OFF
(µs)
2
1
4
0.5
1 1.5
436112 G05
2
6
8
3
5
7
2.5
V
IN
= STEP 5V TO (V
IN(OV)
+ V
OVDRV
)
V
IN
5V/DIV
V
GATE
10V/DIV
V
OUT
5V/DIV
I
CABLE
0.5A/DIV
20ms/DIV
436112 G07
FIGURE 5 CIRCUIT
R
IN
= 150mΩ, L
IN
= 0.7µH
R
SENSE
= 25mΩ
LOAD = 10Ω, C
OUT
= 10µF
V
IN
5V/DIV
V
GATE
10V/DIV
V
OUT
5V/DIV
I
CABLE
0.5A/DIV
1ms/DIV
436112 G08
FIGURE 5 CIRCUIT
R
IN
= 150mΩ, L
IN
= 0.7µH
R
SENSE
= 25mΩ
LOAD = 10Ω, C
OUT
= 10µF
V
ON
5V/DIV
V
GATE
10V/DIV
V
OUT
5V/DIV
I
CABLE
0.5A/DIV
50µs/DIV
436112 G09
FIGURE 5 CIRCUIT
R
IN
= 150mΩ, L
IN
= 0.7µH
R
SENSE
= 25mΩ
LOAD = 10Ω, C
OUT
= 10µF
T
A
= 25°C, V
IN
= 5V, V
ON
= 0V, unless otherwise noted.
V
IN
(V)
2.5
4
V
GATE
/VG
GATE(TH)
(V)
6
5
8
3.5
4
3
54.5
436112 G06
5.5
10
12
7
9
11
6
V
GATE
V
GATE(TH)
V
IN
= V
OUT
GATE Voltage and GATE High
Threshold (for PWRGD Status)
vs Input Voltage