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参数资料
| 型号： | LTC3786IMSE#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 900 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | LEAD FREE, PLASTIC, MSOP-16 |
| 文件页数： | 1/34页 |
| 文件大小： | 397K |
| 代理商： | LTC3786IMSE#TRPBF |
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LTC3786
1
3786fa
Typical applicaTion
FeaTures
DescripTion
Low IQ Synchronous
Boost Controller
The LTC3786 is a high performance synchronous boost
converter controller that drives all N-channel power
MOSFETs. Synchronous rectification increases efficiency,
reduces power losses and eases thermal requirements,
allowing the LTC3786 to be used in high power boost
applications.
A 4.5V to 38V input supply range encompasses a wide
range of system architectures and battery chemistries.
When biased from the output of the boost converter or
another auxiliary supply, the LTC3786 can operate from
an input supply as low as 2.5V after start-up. The 55A
no-load quiescent current extends operating run time in
battery-powered systems.
The operating frequency can be set for a 50kHz to 900kHz
range or synchronized to an external clock using the
internal PLL. The LTC3786 also features a precision 1.2V
reference and a power good output indicator. The SS pin
rampstheoutputvoltageduringstart-up.ThePLLIN/MODE
pin selects among Burst Mode operation, pulse-skipping
mode or continuous inductor current mode at light loads.
12V to 24V/5A Synchronous Boost Converter
applicaTions
n
Synchronous Operation For Highest Efficiency and
Reduced Heat Dissipation
n
Wide VIN Range: 4.5V to 38V (40V Abs Max) and
Operates Down to 2.5V After Start-Up
n
Output Voltages Up to 60V
n
±1% 1.2V Reference Voltage
n
RSENSE or Inductor DCR Current Sensing
n
100% Duty Cycle Capability for Synchronous MOSFET
n
Low Quiescent Current: 55A
n
Phase-Lockable Frequency (75kHz to 850kHz)
n
Programmable Fixed Frequency (50kHz to 900kHz)
n
Adjustable Output Voltage Soft-Start
n
Power Good Output Voltage Monitor
n
Low Shutdown Current IQ: <8A
n
Internal 5.4V LDO for Gate Drive Supply
n
Thermally Enhanced 16-Pin 3mm
× 3mm QFN and
MSOP Packages
n
Industrial and Automotive Power Supplies
n
Automotive Start-Stop Systems
n
Medical Devices
n
High Voltage Battery-Powered Systems
L
, LT, LTC, LTM, Burst Mode, OPTI-LOOP, Linear Technology and the Linear logo are
registered trademarks and No RSENSE is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners. Protected by U. S. Patents, including
5408150, 5481178, 5705919, 5929620, 6177787, 6498466, 6580258, 6611131.
SENSE+
VBIAS
SENSE–
TG
0.1F
220pF
LTC3786
0.1F
15nF
220F
3786 TA01a
VOUT
24V
5A
4.7F
VIN 4.5V TO 24V
4m
3.3H
BOOST
SW
BG
GND
INTVCC
VFB
ITH
SS
12.1k
8.66k
232k
FREQ
RUN
PLLIN/MODE
PGOOD
Efficiency and Power Loss
vs Load Current
OUTPUT CURRENT (A)
0.01
0.001
0.0001
0.00001
40
EFFICIENCY
(%)
POWER
LOSS
(mW)
50
60
70
80
0.1
1
10
3786 TA01b
30
20
10
0
90
100
10
100
1000
1
0.1
10000
VIN = 12V
VOUT = 24V
Burst Mode OPERATION
FIGURE 8 CIRCUIT
BURST
EFFICIENCY
BURST
LOSS
相关PDF资料 |
PDF描述 |
|---|---|
| LTC3786EMSE#TRPBF | SWITCHING CONTROLLER, 900 kHz SWITCHING FREQ-MAX, PDSO16 |
| LTC3786EMSE#PBF | SWITCHING CONTROLLER, 900 kHz SWITCHING FREQ-MAX, PDSO16 |
| LTC3786EUD#PBF | SWITCHING CONTROLLER, 900 kHz SWITCHING FREQ-MAX, PQCC16 |
| LTC3787IGN#TRPBF | SWITCHING CONTROLLER, 585 kHz SWITCHING FREQ-MAX, PDSO28 |
| LTC3787EGN#TRPBF | SWITCHING CONTROLLER, 585 kHz SWITCHING FREQ-MAX, PDSO28 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3786IUD#PBF | 功能描述:IC REG CTRLR BST PWM CM 16-QFN 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:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 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:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LTC3786IUD#TRPBF | 功能描述:IC REG CTRLR BST PWM CM 16-QFN 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:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 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:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LTC3787EGN#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:PolyPhase® 特色产品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 标准包装:1 系列:PowerWise® PWM 型:电压模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.5 V ~ 18 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:-5°C ~ 125°C 封装/外壳:32-WFQFN 裸露焊盘 包装:Digi-Reel® 产品目录页面:1303 (CN2011-ZH PDF) 其它名称:LM3754SQDKR |
| LTC3787EGN#PBF | 制造商:Linear Technology 功能描述:IC DC-DC CONV 900kHz SSOP28 制造商:Linear Technology 功能描述:IC, DC-DC CONV, 900kHz, SSOP28 |
| LTC3787EGN#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:PolyPhase® 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 |
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