LT3782A LINER [Linear Technology], LT3782A Datasheet - Page 20

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

LT3782A
TYPICAL APPLICATION
RELATED PARTS
PART NUMBER
LT
LTC1624
LTC1696
LTC1700
LTC1871/LTC1871-7
LT1930
LT1952
LTC3425
LTC3703/LTC3703-5
LTC3729L-6
LTC3731
LT3782
LTC3803
LTC3806
LTC3850
LTC3862/LTC3862-1
PolyPhase is a registered trademark of Linear Technology Corporation. ThinSOT and No R
20
®
1619
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
CS1
CS2
10Ω
10Ω
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
20A to 200A, 250kHz to 550kHz PolyPhase
Synchronous Controller
3-Phase to 12-Phase Synchronous Controller
2-Phase Step-Up DC/DC Controller
SOT-23 Flyback Controller
Synchronous Flyback Controller
Dual, 250kHz to 750kHz, 2-Phase Synchronous
Step-Down Controller
Multiphase High Power Current Mode Step-Up
Controller
10nF
10nF
●
59k
82k
SENSE
FAX: [phone]
4.7nF
™ Synchronous Step-Up Controller
10
11
12
13
14
1
2
3
4
5
6
7
8
9
28V Output Base Station Power Converter with Redundant Input
SGATE2
SGATE1
NC
GND
SYNC
DELAY
DCL
SENSE1
SENSE1
SLOPE
R
SENSE2
SENSE2
SS
SET
+
–
–
+
LT3782A
●
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
SENSE
100pF
C
C2
COMMENTS
300kHz Fixed Frequency, Boost, SEPIC, Flyback Topology
SO-8; 300kHz Operating Frequency; Buck, Boost, SEPIC Design; V
0.8V ≤ V
Up to 95% Effi ciency, Operation as Low as 0.9V Input
No R
Up to 34V Output, 2.6V ≤ V
High Effi ciency, 25W to 500W, Wide Input Range, Adaptive Duty Cycle Clamp
0.5V ≤ V
High Effi ciency Synchronous Operation, High Voltage Operation,
No Transformer Required
Expandable from 2-Phase to 12-Phase, Uses All Surface Mount Components,
V
60A to 240A Output Current, 0.6V ≤ V
Pin Compatible with LT3782A
Adjustable Slope Compensation, Internal Soft-Start
High Effi ciency, Improves Cross Regulation in Multiple Output Designs,
Current Mode, 3mm × 4mm 12-Pin DFN Package
V
SSOP-28 Packages
4V ≤ V
are trademarks of Linear Technology Corporation.
IN
IN
4.7nF
C
: 4V to 30V, 99% Duty Cycle, 4mm × 4mm QFN, 4mm × 5mm QFN and
Up to 30V
C1
2R2
SENSE
IN
IN
IN
≤ 36V Expandable from 2-Phase to 12-Phase
, 7V Gate Drive, Current Mode Control
BAS516
BAS516
≤ 24V, ±2% Overvoltage Threshold Accuracy, ThinSOT™ Package
≤ 4.5V, 2.4V ≤ V
0V TO 28V*
0V TO 28V*
V
V
INA
INB
C
22μF
C
22μF
INA
INB
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
CS1
CS2
0.004Ω
0.004Ω
IN
OUT
≤ 16V, Miniature Design
≤ 5.25V, Very Low Output Ripple
Q1
PH4840S
Q2
PH4840S
330μF, 35V, ×2
OUT
C
OUT2
10μF, 50V, ×4
≤ 6V, 4.5V ≤ V
© LINEAR TECHNOLOGY CORPORATION 2008
C
UPS840
UPS840
OUT1
D1
D2
3782A TA03
IN
OUTPUT
28V
4A (8A**)
≤ 32V
LT 1208 • PRINTED IN USA
IN
Up to 36V
3782af