参数资料
| 型号： | AP7217-33SG-13 |
| 厂商： | Diodes Inc |
| 文件页数： | 7/10页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3.3V .5A 8-SOIC |
| 产品变化通告： | Copper Bond Wire Change 13/Jan/2012 |
| 标准包装： | 2,500 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 3.3V |
| 输入电压： | 最高 5.5V |
| 电压 - 压降（标准）： | 0.1V @ 100mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 500mA（最小值） |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOP |
| 包装： | 带卷 (TR) |
AP7217
500mA CMOS LDO
Timing Diagram
t RP
20mSec-TYP.
1.8V
V IN
VD OUT
EN
VR OUT
Application Note
Input Capacitor
A 1 μ F ceramic capacitor is recommended to connect between IN and GND pins to decouple input power supply
glitch and noise. The amount of the capacitance may be increased without limit. A lower ESR (Equivalent Series
Resistance) capacitor allows the use of less capacitance, while higher ESR type requires more capacitance. This
input capacitor must be located as close as possible to the device to assure input stability and less noise. For
PCB layout, a wide copper trace is required for both IN and GND.
Output Capacitor
The output capacitor is required to stabilize and help the transient response of the LDO. The AP7217 is designed
to have excellent transient response for most applications with a small amount of output capacitance. The AP7217
is stable with any small ceramic output capacitors of 1.0 μ F or higher value, and the temperature coefficients of
X7R or X5R type. Additional capacitance helps to reduce undershoot and overshoot during transient. For PCB
layout, the output capacitor must be placed as close as possible to OUT and GND pins, and keep the leads as
short as possible.
ENABLE/SHUTDOWN Operation
The AP7217 is turned on by setting the EN pin high, and is turned off by pulling it low. If this feature is not used,
the EN pin should be tied to IN pin to keep the regulator output on at all time. To ensure proper operation, the
signal source used to drive the EN pin must be able to swing above and below the specified turn-on/off voltage
thresholds listed in the Electrical Characteristics section under V IL and V IH .
VR OUT
VD OUT
EN=0
EN=1
0V
3.3V
Φ
Φ
Current Limit Protection
When output current at OUT pin is higher than current limit threshold, the current limit protection will be triggered
and clamp the output current to approximately 600mA to prevent over-current and to protect the regulator from
damage due to overheating.
AP7217
Document number: DS31292 Rev. 4 - 2
7 of 10
April 2010
? Diodes Incorporated
相关PDF资料 |
PDF描述 |
|---|---|
| AP7217A-33SG-13 | IC REG LDO 3.3V .6A 8-SOIC |
| AP7217C-13SPG-13 | IC REG LDO 1.25V .6A 8-SOIC |
| AP7217D-12YG-13 | IC REG LDO 1.2V .6A SOT89-3 |
| AP7311-33WG-7 | IC REG LDO 3.3V .15A SOT25-5 |
| AP7312-1533W6-7 | IC REG LDO 1.5V/3.3V .15A SOT26 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AP7217-33SG-U | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:500mA CMOS LDO |
| AP7217A | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:3.3V 600mA CMOS LDO |
| AP7217A_09 | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:3.3V 600mA CMOS LDO |
| AP7217A-33SG-13 | 功能描述:低压差稳压器 - LDO LDO 350MV 3.3V-5.5V 550mA RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| AP7217A-33SG-U | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:3.3V 600mA CMOS LDO |
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