lt3782aeufd Linear Technology Corporation, lt3782aeufd Datasheet - Page 4

• Manufacturer Part Number: lt3782aeufd
• Description: 2-phase Step-up Dc/dc Controller
• Manufacturer: Linear Technology Corporation

temperature range, otherwise specifi cations are at T
LT3782A
ELECTRICAL CHARACTERISTICS
PARAMETER
Gate Driver
V
BGATE1, BGATE2 High Voltage
BGATE1, BGATE2 Source Current (Peak)
BGATE1, BGATE2 Low Voltage
BGATE1, BGATE2 Sink Current (Peak)
SGATE1, SGATE2 High Voltage
SGATE1, SGATE2 Low Voltage
SGATE1, SGATE2 Peak Current
Delay of BGATE High
Delay Pin Input Current
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 LT3782AE is guaranteed to meet performance specifi cations
from 0°C to 85°C. Specifi cations over the –40°C to 125°C operating
junction temperature range are assured by design, characterization and
correlation with statistical process controls. The LT3782AI is guaranteed
TYPICAL PERFORMANCE CHARACTERISTICS
4
11.0
10.9
10.8
10.7
10.6
10.5
10.4
10.3
10.2
10.1
10.0
GBIAS
0
V
GBIAS
vs I
GBIAS
I
GBIAS
50
(mA)
3782A G01
100
20
18
16
14
12
10
8
6
4
2
0
6
I
CC
8
A
vs V
10
= 25°C. V
CONDITIONS
I
13V ≤ V
V
Capacitive Load >22μF
Capacitive Load >50μF
8V ≤ V
Capacitive Load >22μF
Capacitive Load >50μF
8V ≤ V
8V ≤ V
500pF Load
DELAY Pin and R
V
V
V
V
GBIAS
CC
DELAY
DELAY
DELAY
DELAY
12
CC
= 8V, I
The
14
< 70mA
CC
CC
CC
= 1V
= 0.5V
= 0.25V
= 0.25V
CC
16
≤ 24V, I
≤ 24V, I
≤ 24V, I
●
V
CC
BGATE
≤ 24V, I
CC
18
denotes the specifi cations which apply over the full operating junction
= 13V, R
(V)
20
= –100mA
SET
BGATE
SGATE
SGATE
to meet performance specifi cations over the full –40°C to 125°C operating
junction temperature range.
Note 3: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specifi ed maximum operating junction
temperature may impair device reliability.
BGATE
22
Pin Shorted
24
SET
= 100mA
= –20mA
= 20mA
= –100mA
26
= 80k, no load on any outputs, unless otherwise noted.
3782A G02
28
30
T
A
= 25°C unless otherwise noted.
–1
–2
–3
–4
–5
3
2
1
0
6
ΔV
(R
SET
REF
l
l
l
l
l
l
9
= 80k)
vs V
12
MIN
10.2
7.8
3.8
4.5
CC
ΔV
15
, ΔFrequency vs V
REF
ΔFREQUENCY
V
CC
18
(V)
–0.1
TYP
100
100
150
250
500
9.2
0.5
5.5
0.5
11
5
3
4
3
4
21
24
MAX
11.7
10.5
–0.3
0.7
6.7
0.7
27
3782A G03
CC
30
12
10
8
4
2
0
–2
–4
6
UNITS
3782af
mA
μA
ns
ns
ns
ns
V
V
V
A
A
V
A
A
V
V