LT3782 Linear Technology, LT3782 Datasheet - Page 16

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

RELATED PARTS
LT3782
TYPICAL APPLICATIO S
PART NUMBER
LT
LTC1624
LTC1696
LTC1700
LTC1871/LTC1871-7
LT1930
LT1952
LTC3425
LTC3703/LTC3703-5
LTC3728
LTC3729
LTC3731
LTC3803
LTC3806
No R
16
®
1619
SENSE
and PolyPhase are trademarks of Linear Technology Corporation.
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
CS1
CS2
10Ω
10Ω
●
10nF
10nF
DESCRIPTION
Current Mode PWM Controller
Current Mode DC/DC Controller
Overvoltage Protection Controller
No R
Wide Input Range Controller
1.2MHz, SOT-23 Boost Converter
Single Switch Synchronous Forward Controller
5A, 8MHz 4-Phase Monolithic Step-Up DC/DC Converter
100V and 60V, Step-Down and Step-Up DC/DC
Synchronous Controller
Dual, 550kHz, 2-Phase Synchronous Step-Down
Controller
20A to 200A, 550kHz PolyPhase™ Synchronous Controller Expandable from 2-Phase to 12-Phase, Uses all Surface Mount
3- to 12-Phase Step-Down Synchronous Controller
SOT-23 Flyback Controller
Synchronous Flyback Controller
FAX: [phone]
59k
82k
4.7nF
SENSE
10
11
12
13
14
™ Synchronous Step-Up Controller
1
2
3
4
5
6
7
8
9
28V Output Base Station Power Converter with Redundant Input
SGATE1
SGATE2
NC
GND
SYNC
DELAY
DCL
SENSE1
SENSE1
SLOPE
R
SENSE2
SENSE2
SS
SET
U
+
–
–
+
LT3782
●
www.linear.com
BGATE1
BGATE2
GBIAS1
GBIAS2
GBIAS
V
V
RUN
V
EE1
EE2
NC
NC
NC
V
CC
FB
C
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1µF
R
2.2µF
15k
24.9k
825k
274k
261k
C1
100pF
C
C2
4.7nF
C
C1
2R2
BAS516
BAS516
0V TO 28V*
0V TO 28V*
COMMENTS
300kHz Fixed Frequency, Boost, SEPIC, Flyback Topology
SO-8; 300kHz Operating Frequency; Buck, Boost, SEPIC Design;
V
0.8V ≤ V
ThinSOT Package
Up to 95% Efficiency, Operation as Low as 0.9V Input
No R
Up to 34V Output, 2.6V ≤ V
High Efficiency, 25W to 500W, Wide Input Range, Adaptive
Duty Cycle Clamp
0.5V ≤ V
High Efficiency Synchronous Operation, High Voltage Operation,
No Transformer Required
Dual 180° Phased Controllers, V
5x5QFN, SSOP-28 Packages
Components, V
60A to 240A Output Current, 0.6V ≤ V
Adjustable Slope Compensation, Internal Soft-Start, Current
Mode 200kHz Operation
High Efficiency, Improves Cross Regulation in Multiple Output
Designs, Current Mode, 3mm × 4mm 12 Pin DFN Package
IN
V
V
INA
INB
Up to 36V
SENSE
C
22µF
C
22µF
INA
INB
IN
IN
NOTE:
*INPUT VOLTAGE RANGE FOR VINA AND VINB IS 0V TO 28V.
AT LEAST ONE OF THE INPUTS MUST BE 12V OR HIGHER.
L1, L2: PULSE PB2020-103
ALL CERAMIC CAPACITORS ARE X7R, TDK
**OUTPUT CURRENT WITH BOTH INPUTS 12V OR HIGHER
10µH
10µH
L1
L2
, 7V Gate Drive, Current Mode Control
≤ 24V, ±2% Overvoltage Threshold Accuracy,
≤ 4.5V, 2.4V ≤ V
CS1
CS2
0.004Ω
0.004Ω
IN
up to 36V
Q1
PH4840S
Q2
PH4840S
330µF, 35V, 2x
C
OUT2
IN
10µF, 50V, 4x
OUT
© LINEAR TECHNOLOGY CORPORATION 2004
≤ 16V, Miniature Design
C
UPS840
UPS840
OUT1
≤ 5.25V, Very Low Output Ripple
D1
D2
IN
: 3.5V to 35V, 99% Duty Cycle,
LT/LT 0705 REV A • PRINTED IN USA
3782 TA03
OUT
≤ 6V, 4.5V ≤ V
OUTPUT
28V
4A (8A**)
IN
≤ 32V
3782fa