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| 型号： | LT3782IFE#TRPBF |
| 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-SSOP |
| 标准包装： | 2,000 |
| 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-SOIC（0.173"，4.40mm 宽）裸露焊盘 |
| 包装： | 带卷 (TR) |
LT3782
2-Phase Step-UP
NOT RECOMMENDED FOR NEW DESIGNS
Contact Linear Technology for Potential Replacement
FEATURES
DC/DC Controller
DESCRIPTION
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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.
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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
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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
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3791 | 制造商:LINER 制造商全称:Linear Technology 功能描述:60V 4-Switch Synchronous |
| LT3791-1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:40VIN LED Converter with Internal PWM Generator Wide VIN Range: 4.5V to 40V |
| LT3791EFE#PBF | 功能描述:IC LED DRVR CONTROL 38TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:True Color PWM™ 标准包装:60 系列:- 恒定电流:- 恒定电压:- 拓扑:线性（LDO），PWM，升压（升压） 输出数:8 内部驱动器:是 类型 - 主要:背光 类型 - 次要:RGB，白色 LED 频率:500kHz ~ 1.5MHz 电源电压:4.75 V ~ 26 V 输出电压:45V 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* 工作温度:-40°C ~ 85°C |
| LT3791EFE#TRPBF | 功能描述:IC LED DRVR CONTROL 38TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:True Color PWM™ 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极，PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND |
| LT3791EFE-1#PBF | 制造商:Linear Technology 功能描述:LED DRVR 9V/12V/15V/18V/24V 38-Pin TSSOP EP 制造商:Linear Technology 功能描述:IC REG CTRLR BUCK BST 38TSSOP 制造商:Linear Technology 功能描述:BUCK/BOOST 4.7/60V 700KHZ 3 制造商:Linear Technology 功能描述:BUCK/BOOST, 4.7/60V, 700KHZ, 38TSSOP 制造商:Linear Technology 功能描述:PWM CONTROLLER, BUCK-BOOST, 700KHZ, 60V, TSSOP-38; Input Voltage:60V; Output Current:10A; Digital IC Case Style:TSSOP; No. of Pins:38; Frequency:700kHz; Operating Temperature Min:-40C; Operating Temperature Max:125C ;RoHS Compliant: Yes |
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