LTC3824EMSE-PBF LINER [Linear Technology], LTC3824EMSE-PBF Datasheet - Page 3

• Manufacturer Part Number: LTC3824EMSE-PBF
• Description: High Voltage Step-Down Controller With 40?A Quiescent Current
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
otherwise specifi ed.
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.
Note 2: The LTC3824E is guaranteed to meet performance specifi cations
from 0°C to 85°C junction temperature. Specifi cations over the –40°C
to 85°C temperature range are assured by design characterization and
correlation with statistical process controls. The LTC3824I grade is
guaranteed over the full –40°C to 125°C operating junction temperature
range.
PARAMETER
V
Soft-Start Current I
V
V
SENSE Voltage at Burst Mode Operation
Current Limit Threshold (V
FB Overvoltage Threshold
Sense Input Current
OSCILLATOR
Switching Frequency
Synchronization Pulse Threshold
on SYNC Pin
Synchronization Frequency Range
V
Minimum On-Time (Measured at GATE Pin)
Switching Frequency Foldback
GATE DRIVER
GATE Bias Voltage (V
GATE Bias Voltage (V
GATE High Voltage (V
GATE Peak Source Current
GATE Low Voltage (V
GATE Peak Sink Current
C
C
C
RSET
Threshold for Switching Off
Burst Mode Threshold
Burst Mode Threshold Hysteresis
SS
CC
CAP
GATE
CC
–V
–V
–GND)
–V
CAP
GATE
CC
CAP
–V
)
)
)
SENSE
)
CONDITIONS
V
V
V
V
(V
V
V
V
R
R
Rising Edge V
R
R
R
3V Buck Converter Circuit, I
V
9V ≤ V
V
4V ≤ V
6V ≤ V
4V ≤ V
C
8V ≤ V
4V ≤ V
C
SYNC/MODE
SS
CC
CC
CC
C
SENSE
FB
CC
GATE
GATE
SET
SET
SET
SET
SET
CC
= 1.6V
= 0.3V
= 0.1V to 1.5V
≤ 60V, V
≤ 60V
≤ 60V
= 12V, I
–V
= 392k
= 200k
= 392k
= 200k
= 392k
= 10nF
= 10nF
CC
CC
CC
CC
CC
CC
SENSE
= V
A
≤ 60V, I
≤ 8V, I
≤ 8V, I
≤ 60V, I
≤ 60V, I
< 8V, I
CC
= 25°C. V
GATE
= 0V (Note 4)
C
) at 30% Duty Cycle
SYNC
Rising, SYNC/MODE Open
GATE
GATE
GATE
The
70% Duty Cycle
= 15mA
GATE
GATE
GATE
= 10mA
= 15mA, V
= 10mA
l
CC
= 10mA
= –15mA
= 15mA
denotes the specifi cations which apply over the full operating
= 12V, R
LOAD
Note 3: This parameter is tested in a feedback loop that servos V
reference voltage with the V
Note 4: This specifi cation represents the maximum voltage on V
switching (GATE pin) is guaranteed to be off.
CC
> 2A
= 12V
SET
= 392k, C
CAP
= 0.1μF . No load on any outputs, unless
C
pin forced to 1V.
l
l
l
l
l
l
l
l
l
l
MIN
170
320
230
460
7.0
6.8
0.2
80
35
0.84
0.04
0.85
0.05
TYP
100
200
400
350
0.1
1.2
7.9
0.5
2.5
0.1
2.5
30
20
50
5
8
LTC3824
MAX
120
230
460
300
600
0.4
1.3
8.8
1.5
2.8
0.8
0.5
75
2
C
FB
where
to the
UNITS
3824fc
3
kHz
kHz
kHz
kHz
kHz
mV
mV
mV
μA
μA
ns
%
V
V
V
V
V
V
V
V
V
V
A
V
V
A