参数资料
| 型号： | LT1765EFE-1.8 |
| 厂商： | Linear Technology |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK 1.8V 3A 16TSSOP |
| 标准包装： | 95 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 1.8V |
| 输入电压： | 3 V ~ 25 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.25MHz |
| 电流 - 输出： | 3A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 16-TSSOP-EP |
| 产品目录页面： | 1329 (CN2011-ZH PDF) |
LT1765/LT1765-1.8/LT1765-2.5/
LT1765-3.3/LT1765-5
Monolithic 3A, 1.25MHz
Step-Down Switching Regulator
FEATURES
DESCRIPTION
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3A Switch in a Thermally Enhanced 16-Lead
TSSOP or 8-Lead SO Package
Constant 1.25MHz Switching Frequency
Wide Operating Voltage Range: 3V to 25V
High Ef?ciency 0.09Ω Switch
1.2V Feedback Reference Voltage
Uses Low Pro?le Surface Mount Components
Low Shutdown Current: 15μA
Synchronizable to 2MHz
Current Mode Loop Control
Constant Maximum Switch Current Rating at
All Duty Cycles*
Available in 8-Lead SO and 16-Lead Thermally
Enhanced TSSOP Packages
The LT ? 1765 is a 1.25MHz monolithic buck switching
regulator. A high ef?ciency 3A, 0.09Ω switch is included
on the die together with all the control circuitry required
to construct a high frequency, current mode switching
regulator. Current mode control provides fast transient
response and excellent loop stability.
New design techniques achieve high ef?ciency at high
switching frequencies over a wide operating voltage
range. A low dropout internal regulator maintains con-
sistent performance over a wide range of inputs from
24V systems to Li-Ion batteries. An operating supply
current of 1mA improves ef?ciency, especially at lower
output currents. Shutdown reduces quiescent current to
15μA. Maximum switch current remains constant at all
duty cycles. Synchronization allows an external logic level
DSL Modems
Portable Computers
Regulated Wall Adapters
Battery-Powered Systems
Distributed Power
APPLICATIONS
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signal to increase the internal oscillator into the range of
1.6MHz to 2MHz.
Full cycle-by-cycle current control and thermal shutdown
are provided. High frequency operation allows the reduc-
tion of input and output ?ltering components and permits
the use of chip inductors.
L , LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
*Patent Pending
TYPICAL APPLICATION
5V to 3.3V Step-Down Converter
Ef?ciency vs Load Current
CMDSH-3
90
V IN = 10V
V OUT = 5V
0.18μF
85
INPUT
BOOST
1.5μH
OUTPUT
5V
2.2μF
CERAMIC
OFF ON
V IN
SHDN
LT1765-3.3
V SW
FB
3.3V
2.5A
80
SYNC
GND
V C
2.2nF
UPS120
4.7μF
CERAMIC
75
1765 TA01
70
0
0.5
1.0
1.5
2.0
SWITCH CURRENT (A)
1765 ? TAO1a
1765fd
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1765EFE-2.5 | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 3V to 25V 16-Pin TSSOP EP |
| LT1765EFE-2.5#PBF | 功能描述:IC REG BUCK 2.5V 3A 16TSSOP 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 |
| LT1765EFE-2.5#TR | 功能描述:IC REG BUCK 2.5V 3A 16TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 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:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LT1765EFE-2.5#TRPBF | 功能描述:IC REG BUCK 2.5V 3A 16TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 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:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LT1765EFE-2.5PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Monolithic 3A, 1.25MHz Step-Down Switching Regulator |
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