参数资料
| 型号： | LT3022IMSE#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ 1A 16MSOP |
| 产品培训模块： | LT3022 - 1A, 0.9V to 10V, Very Low Dropout Linear Regulator |
| 标准包装： | 2,500 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 0.2 V ~ 9.5 V |
| 输入电压： | 0.9 V ~ 10 V |
| 电压 - 压降（标准）： | 0.145V @ 1A |
| 稳压器数量： | 1 |
| 电流 - 输出： | 1A |
| 电流 - 限制（最小）： | 1.1A |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TFSOP（0.118"，3.00mm 宽）裸露焊盘 |
| 供应商设备封装： | 16-MSOP，裸露焊盘 |
| 包装： | 带卷 (TR) |
LT3022/LT3022-1.2
LT3022-1.5/LT3022-1.8
1A, 0.9V to 10V,
Very Low Dropout
Linear Regulator
V IN Range: 0.9V to 10V
Dropout Voltage: 145mV Typical
Output Current: 1A
Adjustable Output (V REF = V OUT(MIN) = 200mV)
Fixed Output Voltages: 1.2V, 1.5V, 1.8V
Stable with Low ESR, Ceramic Output Capacitors
0.05% Typical Load Regulation from 1mA to 1A
Quiescent Current: 400μA Typical
7.5μA Typical Quiescent Current in Shutdown
Current Limit Protection
Reverse-Battery Protection with No Reverse Current
Thermal Limiting with Hysteresis
16-Lead (5mm × 3mm) DFN and MSOP Packages
High Efficiency Linear Regulators
Battery-Powered Systems
Logic Supplies
Post Regulator for Switching Supplies
Wireless Modems
FPGA Core Supplies
FEATURES
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(10μF Minimum)
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APPLICATIONS
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DESCRIPTION
The LT ? 3022 is a very low dropout voltage (VLDO?) linear
regulator that operates from single input supplies down to
0.9V. The device supplies 1A output current with 145mV
typical dropout voltage. The LT3022 is ideal for low input
voltage to low output voltage applications, providing
comparable electrical efficiency to a switching regulator.
The regulator optimizes stability and transient response
with low ESR ceramic output capacitors as small as 10μF.
Other LT3022 features include 0.05% typical line regulation
and 0.05% typical load regulation. In shutdown, quiescent
current typically drops to 7.5μA. Internal protection circuitry
includes reverse-battery protection, current limiting, ther-
mal limiting with hysteresis and reverse-current protection.
The LT3022 is available as an adjustable device with
an output voltage range down to the 200mV reference.
Three fixed output voltages, 1.2V, 1.5V and 1.8V are also
offered. The LT3022 regulator is available in the thermally
enhanced low profile (0.75mm) 16-lead (5mm × 3mm)
DFN and MSOP packages.
L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. VLDO is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
Minimum Input Voltage
1.2V to 0.9V, 1A VLDO Regulator
1.1
1.0
0.9
I L = 1A
V IN
1.2V
10μF
IN OUT
LT3022
SHDN ADJ
GND
698
1%
200
1%
3022 TA01a
V OUT
0.9V
10μF 1A
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–50
–25
0
25
50
75
100
125
TEMPERATURE (°C)
3022 TA01b
3022fb
1
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