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參數資料
| 型號： | LTC3785IUF#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | 3 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC24 |
| 封裝： | 4 X 4 MM, LEAD FREE, PLASTIC, MO-220WGGD, QFN-24 |
| 文件頁數： | 1/20頁 |
| 文件大小： | 275K |
| 代理商： | LTC3785IUF#TRPBF |
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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相關代理商/技術參數 |
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| LTC3786EMSE#PBF | 功能描述:IC REG CTRLR BST PWM CM 16-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 切換控制器 系列:- 特色產品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標準包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數:1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 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:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤 包裝:Digi-Reel® 產品目錄頁面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR |
| LTC3786EMSE#PBF | 制造商:Linear Technology 功能描述:IC DC-DC CONV 550kHz MSOP16 制造商:Linear Technology 功能描述:IC, DC-DC CONV, 550kHz, MSOP16 |
| LTC3786EMSE#TRPBF | 功能描述:IC REG CTRLR BST PWM CM 16-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 切換控制器 系列:- 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數:1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 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:24-WQFN 裸露焊盤 包裝:帶卷 (TR) |
| LTC3786EUD#PBF | 功能描述:IC REG CTRLR BST PWM CM 16-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 切換控制器 系列:- 特色產品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標準包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數:1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 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:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤 包裝:Digi-Reel® 產品目錄頁面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR |
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