参数资料
| 型号： | ADP172ACBZ-2.9-R7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 11/20页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 2.9V .3A 4WLCSP |
| 产品变化通告： | 8mm Carrier Tape Changes 28/Feb/2012 |
| 标准包装： | 3,000 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 2.9V |
| 输入电压： | 最高 3.6V |
| 电压 - 压降（标准）： | 0.05V @ 300mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 300mA（最小值） |
| 电流 - 限制（最小）： | 400mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 4-UFBGA，WLCSP |
| 供应商设备封装： | 4-WLCSP |
| 包装： | 带卷 (TR) |
Data Sheet
THEORY OF OPERATION
The ADP172 is a low quiescent current, low-dropout linear
regulator that operates from 1.6 V to 3.6 V and can provide up to
300 mA of output current. Drawing a low 170 μA of quiescent
current (typical) at full load makes the ADP172 ideal for battery-
operated portable equipment. Shutdown current consumption is
typically 100 nA.
Optimized for use with small 1 μF ceramic capacitors, the
ADP172 provides excellent transient performance.
ADP172
VIN VOUT
ADP172
Internally, the ADP172 consists of a reference, an error
amplifier, a feedback voltage divider, and a PMOS pass transistor.
Output current is delivered via the PMOS pass device, which is
controlled by the error amplifier. The error amplifier compares
the reference voltage with the feedback voltage from the output
and amplifies the difference. If the feedback voltage is lower than
the reference voltage, the gate of the PMOS device is pulled lower,
allowing more current to pass and increasing the output voltage.
If the feedback voltage is higher than the reference voltage, the
gate of the PMOS device is pulled higher, allowing less current
to pass and decreasing the output voltage.
SHORT CIRCUIT,
R1
The ADP172 uses the EN pin to enable and disable the VOUT
pin under normal operating conditions. When EN is high, VOUT
GND
UVLO AND
THERMAL
PROTECT
turns on; when EN is low, VOUT turns off. For automatic
startup, EN can be tied to VIN.
EN
SHUTDOWN
0.5V REFERENCE
R2
Figure 23. ADP172 Internal Block Diagram
Rev. D | Page 11 of 20
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADP172ACBZ-3.0-R7 | 功能描述:IC REG LDO 3V .3A 4WLCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 其它有关文件:LD39015JXX12 View All Specifications 标准包装:1 系列:- 稳压器拓扑结构:正，固定式 输出电压:1.2V 输入电压:1.5 V ~ 5.5 V 电压 - 压降（标准）:- 稳压器数量:1 电流 - 输出:150mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:4-WFBGA，FCBGA 供应商设备封装:4-覆晶（1.07x1.07） 包装:Digi-Reel® 其它名称:497-11958-6 |
| ADP172CB1.26-EVALZ | 制造商:Analog Devices 功能描述:EVAL BRD SINGLE 300MA LDO W/A LOW VIN - Boxed Product (Development Kits) 制造商:Analog Devices 功能描述:EVAL BOARD FOR ADP172 制造商:Analog Devices 功能描述:Eval brd Single 300mA LDO w/a low VIN |
| ADP172CB-1.2-EVALZ | 制造商:Analog Devices 功能描述:EVAL BRD SINGLE 300MA LDO W/A LOW VIN - Boxed Product (Development Kits) 制造商:Analog Devices 功能描述:EVAL BOARD FOR ADP172 制造商:Analog Devices 功能描述:Eval brd Single 300mA LDO w/a low VIN |
| ADP172CB-1.5-EVALZ | 制造商:Analog Devices 功能描述:EVAL BRD SINGLE 300MA LDO W/A LOW VIN 制造商:Analog Devices 功能描述:Eval brd Single 300mA LDO w/a low VIN |
| ADP172CB-1.8-EVALZ | 制造商:Analog Devices 功能描述:EVAL BRD SINGLE 300MA LDO W/A LOW VIN 制造商:Analog Devices 功能描述:Eval brd Single 300mA LDO w/a low VIN |
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