LT3469
3
3469f
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Switch Leakage Current
VSW = 5V
0.01
1
A
Diode VF
740
1100
mV
Diode Reverse Leakage Current
VR = 5V
0.1
1
A
The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 2) VIN = 5V, VCC = 35V, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LT3469E is guaranteed to meet performance specifications
from 0
°C to 85°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: Current limit is guaranteed by design and/or correlation to static
test. Slope compensation reduces current limit at higher duty cycles.
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Schottky Forward Voltage
Schottky Reverse Leakage
FORWARD VOLTAGE (mV)
200
SCHOTTKY
CURRENT
(mA)
150
200
250
500
700
1000
3469 G07
100
50
0
300 400
600
800 900
100
°C
–50
°C
25
°C
TEMPERATURE (
°C)
–50
0
LEAKAGE
CURRENT
(
A)
5
10
15
20
25
–25
025
50
3469 G09
75
100
VR = 5V
Switching Frequency
FB Pin Voltage and Bias Current
TEMPERATURE (
°C)
–50
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
25
75
3469 G10
–25
0
50
100
SWITCHING
FREQUENCY
(MHz)
TEMPERATURE (
°C)
–50
1.175
FB
VOLTAGE
(V)
FB
BIAS
CURRENT
(nA)
1.195
1.215
1.235
1.255
1.275
0
10
20
30
40
50
–25
025
50
3469 G11
75
100
CURRENT
VOLTAGE
(Switching Regulator)
VIN (V)
0
I Q
(mA)
1.2
1.8
2.0
16
3469 G05
1.0
0.8
0
4
8
12
14
2
6
10
0.4
2.4
2.2
1.6
1.4
0.6
0.2
–50
°C
100
°C
25
°C
DUTY CYCLE (%)
0
CURRENT
LIMIT
(mA)
150
200
250
80
3469 G06
100
50
0
20
40
60
100
TA = 25°C
VIN Quiescent Current
Current Limit vs Duty Cycle