参数资料
| 型号： | LT3782EUFD#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST PWM CM 28-QFN |
| 标准包装： | 73 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 533kHz |
| 占空比： | 94% |
| 电源电压： | 6 V ~ 40 V |
| 降压： | 无 |
| 升压： | 是 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 包装： | 管件 |
| 产品目录页面： | 1332 (CN2011-ZH PDF) |
LT3782
2-Phase Step-UP
NOT RECOMMENDED FOR NEW DESIGNS
Contact Linear Technology for Potential Replacement
FEATURES
DC/DC Controller
DESCRIPTION
n
n
n
n
n
n
n
n
n
n
n
2-Phase Operation Reduces Required Input and
Output Capacitance
Programmable Switching Frequency:
150kHz to 500kHz
6V to 40V Input Range
10V Gate Drive with V CC ≥13V
High Current Gate Drive (4A)
Programmable Soft-Start and Current Limit
Programmable Slope Compensation for
High Noise Immunity
MOSFET Gate Signals with Programmable
Falling Edge Delay for External Synchronous
Drivers
Programmable Undervoltage Lockout
Programmable Duty Cycle Clamp (50% or Higher)
Thermally Enhanced 28-Lead TSSOP and 4mm × 5mm
The LT ? 3782 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 (V CC ≥13V) and 4A peak drive current,
the LT3782 can drive most industrial grade high power
MOSFETs with high ef?ciency. 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.
QFN Packages
APPLICATIONS
For new designs use the LT3782A which has improved
phase matching
L , LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
n
n
n
Industrial Equipment
Telecom Infrastructure
Interleaved Isolated Power Supply
All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 6144194.
TYPICAL APPLICATION
50V 4A Boost Converter
V IN
10V TO 36V
V CC
GBIAS1
L1
D1
30BQ060
C OUT1
10μF
V OUT
50V, 4A
Ef?ciency and Power Loss
C IN
10μF
50V
2x
R6
825k
R8
274k
1μF
RUN
GBIAS2
GBIAS
BGATE1
LT3782
+
C3
2μF
L2
R S1
0.004Ω
M1
Si7852dp
2x
D2
30BQ060
50V
2x
+
C OUT2
220μF
97
95
93
vs Load Current
EFFICIENCY V IN = 24V
V IN = 12V
18
15
12
R SLOPE
59k
SLOPE
V EE1
BGATE2
M2
Si7852dp
91
V IN = 12V
9
R FREQ
80k
DELAY
DCL
R SET
V EE2
2x
R S2
0.004Ω
L1, L2: PB2020.223
C IN , C OUT1 : X7R, TDK
89
87
V IN = 24V
POWER LOSS
6
3
100pF
0.1μF
13k
6.8nF
SS
V C
GND
SENSE1 +
SENSE1 –
SENSE2 +
SENSE2 –
FB
10Ω
10nF
10Ω
10nF
3782 TA01
R F1
475k
R F2
24.9k
85
0
1
2
3
I OUT (A)
4
5
3782 TA01b
0
3782fg
1
相关PDF资料 |
PDF描述 |
|---|---|
| LT3800IFE#PBF | IC REG CTRLR INV PWM CM 16-TSSOP |
| LT3804EFE#PBF | IC REG CTRLR ISO PWM 28-TSSOP |
| LT3825EFE#PBF | IC REG CTRLR FLYBK ISO 16-TSSOP |
| LT3837EFE#PBF | IC REG CTRLR FLYBK ISO 16-TSSOP |
| LT3844EFE#PBF | IC REG CTRLR BST INV PWM 16TSSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3782EUFD-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:2-Phase Step-UP DC/DC Controller |
| LT3782EUFD-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:2-Phase Step-UP DC/DC Controller |
| LT3782IFE | 制造商:LINER 制造商全称:Linear Technology 功能描述:2-Phase Step-UP DC/DC Controller |
| LT3782IFE#PBF | 功能描述:IC REG CTRLR BST PWM CM 28-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
| LT3782IFE#TRPBF | 功能描述:IC REG CTRLR BST PWM CM 28-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
发布紧急采购，3分钟左右您将得到回复。