参数资料
| 型号： | LTC3025IDC#TRMPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .3A 6-DFN |
| 产品培训模块： | More Information on LDOs |
| 标准包装： | 500 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 0.4 V ~ 3.6 V |
| 输入电压： | 0.9 V ~ 5.5 V |
| 电压 - 压降（标准）： | 0.045V @ 300mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 300mA（最小） |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-WFDFN 裸露焊盘 |
| 供应商设备封装： | 6-DFN-EP（2x2） |
| 包装： | 带卷 (TR) |
LTC3025
300mA Micropower
VLDO Linear Regulator
FEATURES
DESCRIPTION
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Wide Input Voltage Range: 0.9V to 5.5V
Stable with Ceramic Capacitors
Very Low Dropout: 45mV at 300mA
Adjustable Output Range: 0.4V to 3.6V
± 2% Voltage Accuracy over Temperature
Supply Load
Low Noise: 80μV RMS (10Hz to 100kHz)
BIAS Voltage Range: 2.5V to 5.5V
Fast Transient Recovery
Shutdown Disconnects Load from V IN and V BIAS
Low Operating Current: I IN = 4μA, I BIAS = 50μA Typ
Low Shutdown Current: I IN = 1μA, I BIAS = 0.01μA Typ
Output Current Limit
Thermal Overload Protection
Available in 6-Lead (2mm × 2mm) DFN Package
The LTC ? 3025 is a micropower, VLDO TM (very low drop-
out) linear regulator which operates from input voltages as
low as 0.9V. The device is capable of supplying 300mA of
output current with a typical dropout voltage of only 45mV.
A BIAS supply is required to run the internal reference and
LDO circuitry while output current comes directly from
the IN supply for high ef?ciency regulation. The low 0.4V
internal reference voltage allows the LTC3025 output to
be programmed to much lower voltages than available in
common LDOs (range of 0.4V to 3.6V). The output voltage
is programmed via two ultrasmall SMD resistors.
The LTC3025’s low quiescent current makes it an ideal
choice for use in battery-powered systems. For 3-cell
NiMH and single cell Li-Ion applications, the BIAS voltage
can be supplied directly from the battery while the input
APPLICATIONS
can come from a high ef?ciency buck regulator, providing
a high ef?ciency, low noise output.
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Low Power Handheld Devices
Low Voltage Logic Supplies
DSP Power Supplies
Cellular Phones
Portable Electronic Equipment
Handheld Medical Instruments
Post Regulator for Switching Supply Noise Rejection
Other features include high output voltage accuracy,
excellent transient response, stability with ultralow ESR
ceramic capacitors as small as 1μF, short-circuit and
thermal overload protection and output current limiting.
The LTC3025 is available in a tiny, low pro?le (0.75mm)
6-lead DFN (2mm × 2mm) package.
L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and VLDO
and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
TYPICAL APPLICATION
1.2V Output Voltage from 1.5V Input Supply
50
1MHz V IN Supply Rejection
Li-Ion
OR
3-CELL
NiMH
1.5V HIGH
EFFICIENCY 1.5V
DC/DC
BUCK
0.1μF
0.1μF
BIAS
IN
LTC3025
OUT
ADJ
80.6k
40.2k
1μF
V OUT = 1.2V
I OUT ≤ 300mA
45
40
35
30
C OUT = 10μF
C OUT = 1μF
OFF ON
SHDN
GND
3025 TA01
25
20
15
10
5 BIAS = 3.6V
I OUT = 100mA
0
V OUT = 1.2V
1.2 1.4 1.6
1.8
2.0
I OUT = 300mA
2.2 2.4 2.6
V IN (V)
3025 TA01b
3025fd
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3025IDC-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:300mA Micropower VLDO Linear Regulator |
| LTC3026 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Adjustable 3A Single Resistor Low Dropout Regulator |
| LTC3026_1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.5A Low Input Voltage VLDO Linear Regulator |
| LTC3026_1208 | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.5A Low Input Voltage VLDO Linear Regulator |
| LTC3026EDD | 制造商:Linear Technology 功能描述:LDO Regulator Pos 0.4V to 2.6V 1.5A 10-Pin DFN EP |
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