参数资料
| 型号： | LT3032MPDE#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .15A 14-DFN |
| 标准包装： | 2,500 |
| 稳压器拓扑结构： | 正可调式和负可调式 |
| 输出电压： | ±1.22 V ~ ±20 V |
| 输入电压： | ±2.3 V ~ ±20 V |
| 电压 - 压降（标准）： | 0.27V @ 150mA，0.3V @ -150mA |
| 稳压器数量： | 2 |
| 电流 - 输出： | 150mA |
| 电流 - 限制（最小）： | 170mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-WFDFN 裸露焊盘 |
| 供应商设备封装： | 14-DFN（4x3） |
| 包装： | 带卷 (TR) |
LT3032 Series
Dual 150mA
Positive/Negative Low Noise
Low Dropout Linear Regulator
FEATURES
DESCRIPTION
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Low Noise: 20μV RMS (Positive) and
30μV RMS (Negative)
Low Quiescent Current: 30μA/Channel
Wide Input Voltage Range: ±2.3V to ±20V
Output Current: ±150mA
Low Shutdown Current: <3μA Total (Typical)
Low Dropout Voltage: 300mV/Channel
Fixed Output Voltages: ±5V, ±12V, ±15V
Adjustable Outputs from ±1.22V to ±20V
No Protection Diodes Needed
Stable with 2.2μF Output Capacitors
Stable with Ceramic, Tantalum or Aluminum Capacitors
Starts into Reverse Output Voltage
Current Limit and Thermal Limit
Low Pro?le 14-Lead 4mm × 3mm × 0.75mm
DFN Package
The LT ? 3032 is a dual, low noise, positive and negative low
dropout voltage linear regulator. Each regulator delivers
up to 150mA with a typical 300mV dropout voltage. Each
regulator’s quiescent current is low (30μA operating and
<3μA in shutdown) and well-controlled in dropout, making
it an excellent choice for battery-powered circuits.
Another key feature of the LT3032 is low output noise.
Adding an external 10nF bypass capacitor to each regulator
reduces output noise to 20μV RMS/ 30μV RMS over a 10Hz to
100kHz bandwidth. The LT3032 is stable with minimum
output capacitors of 2.2μF. The regulators do not require
the addition of ESR as is common with other regulators.
The regulators are offered as adjustable output devices
with an output voltage down to the ±1.22V reference volt-
age or in ?xed voltages of ±5V, ±12V and ±15V. Internal
protection circuitry includes reverse-output protection,
Battery-Powered Instruments
Bipolar Power Supplies
Low Noise Power Supplies
APPLICATIONS
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current limiting and thermal limiting.
The LT3032 is available in a unique low pro?le 14-lead
4mm × 3mm × 0.75mm DFN package with exposed back-
side pads for each regulator, allowing optimum thermal
performance.
L , LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
TYPICAL APPLICATION
Dual Polarity Low Noise 150mA Power Supply
10Hz to 100kHz Output Noise
INP
OUTP
5V OUT AT 150mA
20μV RMS NOISE
5.4V TO
20V
10μF
LT3032-5
0.01μF
10μF
OUTP
100μV/DIV
20μV RMS
<0.25V = OFF
>2V = ON
SHDNP
SHDNN
BYPP
GND
–5.4V TO
–20V
10μF
INN
BYPN
OUTN
3032 TA01
0.01μF
10μF
–5V OUT AT –150mA
30μV RMS NOISE
OUTN
100μV/DIV
30μV RMS
1mS/DIV
3032 TA02a
3032fd
1
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