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参数资料
| 型号： | LT3505EMS8E#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 1.2A 8MSOP |
| 标准包装： | 50 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.78 V ~ 33.8 V |
| 输入电压： | 3.6 V ~ 36 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 200kHz ~ 3.01MHz |
| 电流 - 输出： | 1.2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽）裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 8-MSOP-EP |
| 产品目录页面： | 1331 (CN2011-ZH PDF) |
LT3505
1.2A, Step-Down
Switching Regulator in
3mm × 3mm DFN
Wide Input Range: 3.6V to 36V Operating,
Up to 1.2A Output Current
Resistor-Programmable Fixed-Frequency Operation
Output Adjustable Down to 780mV
Short-Circuit Robust
Uses Tiny Capacitors and Inductors
Soft-Start
Low Shutdown Current: <2μA
Low V CESAT Switch: 350mV at 1A
Thermally Enhanced, Low Pro?le 3mm x 3mm
FEATURES
!
40V Maximum
!
!
from 200kHz to 3MHz
!
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DFN-8 and MSOP-8 Packages
APPLICATIONS
DESCRIPTION
The LT ? 3505 is a current mode PWM step-down DC/DC
converter with an internal 1.4A power switch. The wide
operating input range of 3.6V to 36V (40V maximum)
makes the LT3505 ideal for regulating power from a wide
variety of sources, including unregulated wall transform-
ers, 24V industrial supplies and automotive batteries. The
oscillator can be programmed for high frequency operation
allowing the use of tiny, low cost external components or
it can be programmed for lower frequency operation to
maximize ef?ciency.
Cycle-by-cycle current limit provides protection against
shorted outputs and soft-start eliminates input current
surge during start-up. The low current (<2μA) shutdown
mode provides output disconnect, enabling easy power
management in battery-powered systems.
!
!
!
!
!
Automotive Battery Regulation
Industrial Control Supplies
Wall Transformer Regulation
Distributed Supply Regulation
Battery-Powered Equipment
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
750kHz, 3.3V Step-Down Converter
Ef?ciency
V IN
4.2V TO 36V
ON OFF
V IN
SHDN
R T
LT3505
GND
BOOST
SW
FB
V C
0.1 μ F 10 μ H
36.5k
11.3k
22pF
V OUT
3.3V
1.1A, V IN > 5V
1.2A, V IN > 8V
10 μ F
90
85
80
75
70
65
1 μ F
75.0k
69.8k
68pF
3505 TA01
60 V IN = 12V
V OUT = 3.3V
55 f SW = 750kHz
L = 10 H
50
0 0.2 0.4 0.6 0.8
LOAD CURRENT (A)
1.0
1.2
3505fc
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3505EMS8E-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.2A, Step-Down Switching Regulator in 3mm × 3mm DFN |
| LT3505EMS8E-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.2A, Step-Down Switching Regulator in 3mm × 3mm DFN |
| LT3505IDD | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.2A, Step-Down Switching Regulator in 3mm × 3mm DFN |
| LT3505IDD#PBF | 功能描述:IC REG BUCK ADJ 1.2A 8DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| LT3505IDD#PBF | 制造商:Linear Technology 功能描述:DC-DC CONVERTER BUCK 3MHZ D 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BUCK, 3MHZ, DFN-8 |
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