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参数资料
| 型号： | LTC3785EUF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC24 |
| 封装： | 4 X 4 MM, PLASTIC, MO-220WGGD, QFN-24 |
| 文件页数： | 1/20页 |
| 文件大小： | 275K |
| 代理商： | LTC3785EUF |
LTC3785
3785fc
Typical applicaTion
DescripTion
10V, High Efficiency,
Synchronous, No RSENSE
Buck-Boost Controller
The LTC3785 is a high power synchronous buck-boost
controller that drives all N-channel power MOSFETs from
input voltages above, below and equal to the output volt-
age. With an input range of 2.7V to 10V, the LTC3785 is
well suited for a wide variety of single or dual cell Li-Ion
or multicell alkaline/NiMH applications.
The operating frequency can be programmed from
100kHz to 1MHz. The soft-start time and current limit are
also programmable. The soft-start capacitor doubles as
the fault timer which can program the IC to latch off or
recycle after a determined off time. Burst Mode opera-
tion is user controlled and can be enabled by driving the
MODE pin high.
Protection features include foldback current limit, short-
circuit and overvoltage protection.
L
, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks
of Linear Technology Corporation. No RSENSE is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Efficiency vs Input Voltage
FeaTures
applicaTions
n
Single Inductor Architecture Allows VIN Above,
Below or Equal to VOUT
n
2.7V to 10V Input and Output Range
n
Up to 96% Efficiency
n
Up to 10A of Output Current
n
All N-channel MOSFETs, No RSENSE
n
True Output Disconnect During Shutdown
n
Programmable Current Limit and Soft-Start
n
Optional Short-Circuit Shutdown Timer
n
Output Overvoltage and Undervoltage Protection
n
Programmable Frequency: 100kHz to 1MHz
n
Selectable Burst Mode Operation
n
Available in 24-Lead (4mm
× 4mm) Exposed Pad
QFN Package
n
Palmtop Computers
n
Handheld Instruments
n
Wireless Modems
n
Cellular Telephones
VCC
ISVIN
TG1
VSENSE
BG1
FB
VC
TG2
BG2
SW2
3785 TA01a
VBST1
SW1
ISSW1
ISVOUT
RT
VDRV
ISSW2
VBST2
CCM
ILSET
MODE
RUN/SS
VIN
VOUT
LTC3785
GND
4.7F
VIN
2.7V
TO 10V
VOUT
3.3V
5A
22F
4.7H
100F
0.22F
270pF
1.3k
205k
121k
12k
42.2k
59k
121k
205k
1nF
VIN (V)
2.5
EFFICIENCY
(%)
95
10
3785 TA01b
90
85
4
5.5
7
8.5
100
ILOAD = 1A
VOUT = 3.3V
FOSC = 500kHz
ILOAD = 2A
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3785EUF#PBF | 功能描述:IC REG CTRLR BST PWM VM 24-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 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 |
| LTC3785EUF#TRPBF | 功能描述:IC REG CTRLR BST PWM VM 24-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) |
| LTC3785EUF-1#PBF | 功能描述:IC REG CTRLR BST PWM VM 24-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) |
| LTC3785EUF-1#TRPBF | 功能描述:IC REG CTRLR BST PWM VM 24-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: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 |
| LTC3785EUFPBF | 制造商:Linear Technology 功能描述:10V Synch Buck-Boost Controller LTC3785 |
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