Datasheet

LTC3375
7
3375fc
For more information www.linear.com/3375
Typical perForMance characTerisTics
V
CC
Supply Current
vs Temperature
V
CC
Supply Current
vs Temperature
RT Programmed Oscillator
Frequency vs Temperature
Default Oscillator Frequency
vs Temperature Oscillator Frequency vs V
CC
Oscillator Frequency vs R
T
V
CC
Undervoltage Threshold
vs Temperature
Buck V
IN
Undervoltage Threshold
vs Temperature
V
CC
Supply Current
vs Temperature
TEMPERATURE (°C)
–50
UV THRESHOLD (V)
2.50
2.60
150
3375 G01
2.40
2.30
0
50
100
–25
25
75
125
2.70
2.45
2.55
2.35
2.65
V
CC
RISING
V
CC
FALLING
TEMPERATURE (°C)
–50
UV THRESHOLD (V)
2.10
2.20
150
3375 G02
2.00
1.90
0
50
100
–25
25
75
125
2.30
2.05
2.15
1.95
2.25
V
IN
RISING
V
IN
FALLING
TEMPERATURE (°C)
–50
I
VCC_ALLOFF
(µA)
30
45
50
150
3375 G03
25
20
0
0
50
100
–25
25
75
125
10
60
55
40
35
15
5
ALL REGULATORS
IN SHUTDOWN
V
CC
= 5.5V
V
CC
= 3.3V
V
CC
= 2.7V
TEMPERATURE (°C)
–50
f
OSC
(MHz)
1.95
2.10
150
3375 G06
1.85
1.80
0
50
100
–25
25
75
125
2.20
1.90
2.00
2.05
2.15
V
CC
= 5.5V
V
CC
= 3.3V
V
CC
= 2.7V
R
RT
= 400k
TEMPERATURE (°C)
–50
f
OSC
(MHz)
1.95
2.10
150
3375 G07
1.85
1.80
0
50
100
–25
25
75
125
2.20
1.90
2.00
2.05
2.15
V
CC
= 5.5V
V
CC
= 3.3V
V
CC
= 2.7V
V
RT
= V
CC
V
CC
(V)
2.7
f
OSC
(MHz)
1.95
2.10
5.5
3375 G08
1.85
1.80
3.5
4.3
5.1
3.1
3.9
4.7
2.20
1.90
2.00
2.05
2.15
V
RT
= V
CC
R
RT
= 400k
R
RT
(kΩ)
250
f
OSC
(MHz)
2.0
2.5
3.0
650 750700
3375 G09
1.5
1.0
0
350
450
550
300
800
400
500
600
0.5
4.0
3.5
V
CC
= 3.3V
TEMPERATURE (°C)
–50
I
VCC
(µA)
100
150
3375 G04
50
0
0
50
100
–25
25
75
125
25
125
75
V
CC
= 5.5V
V
CC
= 3.3V
V
CC
= 2.7V
AT LEAST ONE BUCK ENABLED
SYNC = 0V
FB = 850mV
TEMPERATURE (°C)
–50
I
VCC
(µA)
320
280
150
3375 G05
160
120
0
0
50
100
–25
25
75
125
80
40
400
360
240
200
V
CC
= 5.5V
V
CC
= 3.3V
V
CC
= 2.7V
AT LEAST ONE BUCK ENABLED
SYNC = 2MHz