LT3782A LINER [Linear Technology], LT3782A Datasheet - Page 3

• Manufacturer Part Number: LT3782A
• Description: 2-Phase Step-Up DC/DC Controller
• Manufacturer: LINER [Linear Technology]

temperature range, otherwise specifi cations are at T
PARAMETER
Overall
Supply Voltage (V
Supply Current (I
Shutdown
RUN Threshold
RUN Threshold Hysteresis
Supply Current in Shutdown
RUN Pin Input Current
Voltage Amplifi er g
Reference Voltage (V
Transconductance
Input Current I
V
V
Source Current I
Sink Current I
V
Soft-Start Current I
Current Amplifi er CA1, CA2
Voltage Gain ΔV
Current Limit (V
Current Limit Mismatch
Input Current (I
Oscillator
Switching Frequency
Synchronization Pulse Threshold on SYNC Pin
Synchronization Frequency Range
(Note: Operation Switching Frequency Equals
Half of the Synchronization Frequency)
V
Maximum Duty Cycle
Duty Cycle Limit
DCL Pin Input Current
ELECTRICAL CHARACTERISTICS
C
C
C
RSET
High
Low
Threshold for Switching Off (BGATE1, BGATE2 Low)
VC
FB
SENSE1
C
SENSE1
VC
VCC
/ΔV
CC
SS
m
)
)
REF
SENSE
+
+
, I
)
– V
SENSE1
SENSE1
–
, I
–
SENSE2
) (V
SENSE2
+
, I
SENSE2
+
– V
SENSE2
–
)
–
)
A
= 25°C. V
CONDITIONS
V
1V ≤ RUN ≤ V
RUN ≤ 0.3V, V
V
V
V
I
I
V
V
V
V
(ΔV
ΔV
R
R
R
Rising Edge V
R
R
R
R
R
V
V
VC
VC
VC
VC
VC
C
RUN
FB
SS
FB
DCL
SET
SET
SET
SET
SET
SET
SET
SET
FB
SENSE
≤ 0.5V (Switching Off), V
SENSE1
= 0
= 0
= 1V, ΔI
= V
= 0.7V – 1V, V
= 0.7V – 1V, V
= 2.3V
= 0.1V – 2.8V
= V
The
= 130k
= 80k
= 40k
= 130k
= 80k
= 40k
= 80k
= 80k, V
≤ 0.3V
= 2.3V
REF
REF
= 0V
●
CC
– ΔV
– 25mV, R
VC
denotes the specifi cations which apply over the full operating junction
V
V
DCL
= 13V, R
REF
SYNC
DCL
DCL
CC
= ±2μA
SENSE2
, V
≤ 30V
≤ 0.3V
= 1.2V
= V
FB
FB
CC
R
= V
= V
RSET
), V
SET
SET
≤ 30V
SET
REF
REF
FB
> 80k
= 40k
= 80k, no load on any outputs, unless otherwise noted.
= 2.3V
CC
– 100mV
+ 100mV
≤ 40V
l
l
l
l
l
l
l
l
l
l
l
l
l
MIN
2.42
200
–10
130
212
386
180
290
550
2.3
2.4
0.3
0.8
13
55
90
83
6
8
6
Max Duty Cycle
2.45
–0.5
2.44
0.35
–0.1
TYP
260
154
250
465
0.4
0.2
1.5
1.2
2.3
11
80
40
11
20
10
63
60
94
90
50
75
4
LT3782A
2.464
2.488
MAX
0.65
–0.3
240
392
715
370
177
288
533
2.6
0.6
0.4
40
16
90
–2
14
28
15
70
10
2
UNITS
μmho
3782af
3
kHz
kHz
kHz
kHz
kHz
kHz
mA
mV
mA
mV
mV
μA
μA
μA
μA
μA
μA
μA
μA
%
%
%
%
V
V
V
V
V
V
V
V
V