LT3782 Linear Technology, LT3782 Datasheet - Page 2

• Manufacturer Part Number: LT3782
• Description: 2-Phase Step-Up DC/DC Controller
• Manufacturer: Linear Technology

ABSOLUTE AXI U RATI GS
LT3782
(Note 1)
V
GBIAS, GBIAS1, GBIAS2 Pin (Externally Forced)
SYNC, RUN Pin ........................................................ 30V
Operating Junction Temperature Range (Notes 2, 3)
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
SS ................................................................– 0.3V to 6V
SENSE1
temperature range, otherwise specifications are at T
outputs, unless otherwise noted.
PARAMETER
Overall
Supply Voltage (V
Supply Current (I
Shutdown
RUN Threshold
RUN Threshold Hysteresis
Supply Current in Shutdown
RUN Pin Input Current
Voltage Amplifier gm
Reference Voltage (V
Transconductance
Input Current I
V
V
Source Current I
Sink Current I
V
Soft-Start Current I
2
ELECTRICAL CHARACTERISTICS
C
C
C
CC
High
Low
Threshold for Switching Off (BGATE1, BGATE2 Low)
............................................................................ 14V
.......................................................... –40°C to 125°C
................................................................– 0.3V to 2V
Supply Voltage .................................................. 40V
+
, SENSE2
VC
FB
VC
VCC
CC
SS
)
)
REF
W
)
+
, SENSE1
W W
–
, SENSE2
–
U
A
= 25°C. V
CONDITIONS
V
1V ≤ RUN ≤ V
RUN ≤ 0.3V, V
V
V
V
I
I
V
V
V
VC
VC
C
RUN
VC
FB
VC
VC
SS
≤ 0.5V (Switching Off), V
The
= 0
= 0
= V
= 1V, ∆I
= 0.7V – 1V, V
= 0.7V – 1V, V
= 0.1V – 2.8V
= 2.3V
REF
●
CC
denotes the specifications which apply over the full operating
= 13V, R
VC
REF
CC
= ±2µA
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
, V
≤ 30V
FB
FB
CC
SENSE1
SENSE1
SENSE2
SENSE2
SGATE2
SGATE1
= V
= V
DELAY
SLOPE
SET
SYNC
≤ 30V
R
GND
DCL
T
SET
NC
SS
REF
REF
JMAX
EXPOSED PAD (PIN 29) IS GND
+
–
–
+
MUST BE SOLDERED TO PCB
= 80k, operating maximum V
28-LEAD PLASTIC SSOP
10
11
12
13
14
CC
1
2
3
4
5
6
7
8
9
– 100mV
+ 100mV
= 125°C, θ
≤ 40V
FE PACKAGE
TOP VIEW
29
JA
= 38°C/ W
http://www.linear.com/leadfree/
28
27
26
25
24
23
22
21
20
19
18
17
16
15
GBIAS
V
NC
NC
VEE1
BGATE1
GBIAS1
GBIAS2
BGATE2
VEE2
NC
RUN
FB
V
CC
C
●
●
●
●
●
●
●
2.42
MIN
200
2.3
2.4
0.3
13
6
8
6
U
CC
= 24V, no load on any
2.45
–0.5
2.44
0.35
TYP
260
ORDER PART
0.4
0.2
1.5
11
80
40
11
20
10
LT3782EFE
LT3782EFE
MARKING
NUMBER
FE PART
W
2.464
2.488
MAX
0.65
370
2.6
0.6
0.4
40
16
90
–2
14
28
15
UNITS
µmho
3782fa
U
mA
mV
mA
µA
µA
µA
µA
µA
µA
V
V
V
V
V
V
V