參數資料
型號： LT3782IFE
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： 4 A SWITCHING CONTROLLER, 533 kHz SWITCHING FREQ-MAX, PDSO28
封裝： 4.40 MM, PLASTIC, TSSOP-28
文件頁數： 1/20頁
文件大?。?/td> 223K
代理商： LT3782IFE
LT3782
1
3782fg
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
2-Phase Step-UP
DC/DC Controller
The LT3782 is a current mode two phase step-up DC/DC
converter controller. Its high switching frequency (up to
500kHz) and 2-phase operation reduce system ltering
capacitance and inductance requirements.
With 10V gate drive (VCC ≥13V) and 4A peak drive current,
the LT3782 can drive most industrial grade high power
MOSFETs with high efciency. For synchronous applica-
tions, the LT3782 provides synchronous gate signals with
programmable falling edge delay to avoid cross conduc-
tion when using external MOSFET drivers. Other features
include programmable undervoltage lockout, soft-start,
current limit, duty cycle clamp (50% or higher) and slope
compensation.
The LT3782 is available in thermally enhanced 28-lead
TSSOP and 4mm
× 5mm QFN packages.
For new designs use the LT3782A which has improved
phase matching
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 6144194.
n Industrial Equipment
n Telecom Infrastructure
n Interleaved Isolated Power Supply
n 2-Phase Operation Reduces Required Input and
Output Capacitance
n Programmable Switching Frequency:
150kHz to 500kHz
n 6V to 40V Input Range
n 10V Gate Drive with VCC ≥13V
n High Current Gate Drive (4A)
n Programmable Soft-Start and Current Limit
n Programmable Slope Compensation for
High Noise Immunity
n MOSFET Gate Signals with Programmable
Falling Edge Delay for External Synchronous
Drivers
n Programmable Undervoltage Lockout
n Programmable Duty Cycle Clamp (50% or Higher)
n Thermally Enhanced 28-Lead TSSOP and 4mm
× 5mm
QFN Packages
50V 4A Boost Converter
3782 TA01
6.8nF
13k
0.1μF
10nF
CIN
10μF
50V
2x
RFREQ
80k
RSLOPE
59k
RS1
0.004Ω
M1
Si7852dp
2x
1μF
R8
274k
R6
825k
COUT2
220μF
VOUT
50V, 4A
VIN
10V TO 36V
+
C3
2μF
+
RS2
0.004Ω
LT3782
VCC
RUN
SLOPE
DELAY
DCL
RSET
SS
VC
GBIAS2
GBIAS
BGATE1
VEE1
BGATE2
VEE2
SENSE1+
SENSE1–
SENSE2+
SENSE2–
FB
GND
M2
Si7852dp
2x
GBIAS1
10Ω
10nF
10Ω
RF1
475k
L1
D1
30BQ060
D2
30BQ060
L2
100pF
RF2
24.9k
COUT1
10μF
50V
2x
L1, L2: PB2020.223
CIN, COUT1: X7R, TDK
Efciency and Power Loss
vs Load Current
IOUT (A)
0
EFFICIENCY
(%)
4
3782 TA01b
POWER
LOSS
(W)
18
15
12
9
6
3
0
1
2
3
5
VIN = 12V
VIN = 24V
EFFICIENCY
POWER LOSS
97
93
95
91
89
87
85
NOT RECOMMENDED FOR NEW DESIGNS
Contact Linear Technology for Potential Replacement
相關PDF資料
PDF描述
LT3837IFE#PBF SWITCHING CONTROLLER, 110 kHz SWITCHING FREQ-MAX, PDSO16
LT3837IFE#TRPBF SWITCHING CONTROLLER, 110 kHz SWITCHING FREQ-MAX, PDSO16
LT3845AMPFE#TRPBF SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
LT3845AIFE#TRPBF SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
LT3845AMPFE#PBF SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO16
相關代理商/技術參數
參數描述
LT3782IFE#PBF 功能描述:IC REG CTRLR BST PWM CM 28-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數:1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
LT3782IFE#TRPBF 功能描述:IC REG CTRLR BST PWM CM 28-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數:1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
LT3782IFE-PBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:2-Phase Step-UP DC/DC Controller
LT3782IFE-TR 制造商:LINER 制造商全稱:Linear Technology 功能描述:2-Phase Step-UP DC/DC Controller
LT3782IFE-TRPBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:2-Phase Step-UP DC/DC Controller
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