参数资料
| 型号： | LT3029IDE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 11/20页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .5A 16DFN |
| 产品培训模块： | LT3029 - 500mA, Dual Output, 1.2 ~ 19.5V, Linear Regulator |
| 标准包装： | 91 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 1.215 V ~ 19.5 V |
| 输入电压： | 1.8 V ~ 20 V |
| 电压 - 压降（标准）： | 0.3V @ 500mA |
| 稳压器数量： | 2 |
| 电流 - 输出： | 500mA |
| 电流 - 限制（最小）： | 520mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFDFN 裸露焊盘 |
| 供应商设备封装： | 16-DFN（4x3） |
| 包装： | 管件 |
LT3029
PIN FUNCTIONS
BYP1/BYP2 (Pin 1/Pin 8): Bypass. Use the BYP1/BYP2
pins to bypass the reference of the LT3029 regulator and
achieve low output noise performance. Internal circuitry
clamps the BYP1/BYP2 pins to ±0.6V (one V BE ) from
ground. A small capacitor from the corresponding output
to this pin bypasses the reference to lower the output
voltage noise. Using a maximum value of 10nF reduces
the output voltage noise to a typical 20μV RMS over a 10Hz
to 100kHz bandwidth. If not used, this pin must be left
unconnected.
NC (Pin 2): No Connect. This pin is not connected to
any internal circuitry. It may be ?oated, tied to V IN or tied
to GND.
OUT1/OUT2 (Pins 3, 4/Pins 6, 7): Output. The outputs
supply power to the loads. A minimum 3.3μF output ca-
pacitor prevents oscillations on each output. Applications
with large output load transients require larger values of
output capacitance to limit peak voltage transients. See
the Applications Information section for more on output
capacitance and reverse output characteristics.
GND (Pin 5, 17): Ground. The exposed pad (Pin 17) of
the DFN and MSOP packages is an electrical connection
to GND. To ensure proper electrical and thermal perfor-
mance, solder Pin 17 to the PCB ground and tie directly
to Pin 5. Connect the bottom of the output voltage setting
resistor divider directly to GND (Pin 5) for optimum load
regulation performance.
IN1/IN2 (Pins 13, 14/Pins 11, 12): Inputs. The IN1/IN2
pins supply power to each channel. The LT3029 requires
a bypass capacitor at the IN1/IN2 pins if located more
Include a bypass capacitor in battery-powered circuits,
as a battery’s output impedance rises with frequency. A
bypass capacitor in the range of 1μF to 10μF suf?ces. The
LT3029’s design withstands reverse voltages on the IN pins
with respect to ground and the OUT pins. In the case of
a reversed input, which occurs if a battery is plugged in
backwards, the LT3029 acts as if a diode is in series with
its input. No reverse current ?ows into the LT3029 and no
reverse voltage appears at the load. The device protects
itself and the load.
SHDN1 / SHDN2 (Pin 15/Pin 10): Shutdown. Pulling the
SHDN1 or SHDN2 pin low puts its corresponding LT3029
channel into a low power state and turns its output off. The
SHDN1 and SHDN2 pins are completely independent of
each other, and each SHDN pin only affects operation on
its corresponding channel. Drive the SHDN1 and SHDN2
pins with either logic or an open collector/drain with pull-up
resistors. The resistors supply the pull-up current to the
open collectors/drains and the SHDN1 or SHDN2 current,
typically less than 1μA. If unused, connect the SHDN1 and
SHDN2 to their corresponding IN pins. Each channel will
be in its low power shutdown state if its corresponding
SHDN pin is not connected.
ADJ1/ADJ2: (Pin 16/Pin 9) Adjust Pin. These are the error
ampli?er inputs. These pins are internally clamped to ±9V.
A typical input bias current of 30nA ?ows into the pins
(see curve of ADJ1/ADJ2 Pin Bias Current vs Temperature
in the Typical Performance Characteristics section). The
ADJ1 and ADJ2 pin voltage is 1.215V referenced to ground
and the output voltage range is 1.215V to 19.5V.
than six inches away from the main input ?lter capacitor.
3029fa
11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3029IDETR | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 500mA/500mA Low Dropout, Low Noise, Micropower Linear Regulator |
| LT3029IDETRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 500mA/500mA Low Dropout, Low Noise, Micropower Linear Regulator |
| LT3029IMSE | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 500mA/500mA Low Dropout, Low Noise, Micropower Linear Regulator |
| LT3029IMSE#PBF | 功能描述:IC REG LDO ADJ .5A 16MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:1 系列:- 稳压器拓扑结构:正，固定式 输出电压:3V 输入电压:2.3 V ~ 5.5 V 电压 - 压降（标准）:0.035V @ 150mA 稳压器数量:2 电流 - 输出:150mA 电流 - 限制（最小）:300mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-UFDFN 裸露焊盘，6-TMLF? 供应商设备封装:6-TMLF?（1.6x1.6） 包装:Digi-Reel® 产品目录页面:1104 (CN2011-ZH PDF) 其它名称:576-3018-6 |
| LT3029IMSE#TRPBF | 功能描述:IC REG LDO ADJ .5A 16MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:1 系列:- 稳压器拓扑结构:正，固定式 输出电压:3V 输入电压:2.3 V ~ 5.5 V 电压 - 压降（标准）:0.035V @ 150mA 稳压器数量:2 电流 - 输出:150mA 电流 - 限制（最小）:300mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-UFDFN 裸露焊盘，6-TMLF? 供应商设备封装:6-TMLF?（1.6x1.6） 包装:Digi-Reel® 产品目录页面:1104 (CN2011-ZH PDF) 其它名称:576-3018-6 |
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