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| 型号： | ADP1715-3.3-EVALZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 11/20页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR ADP1715-3.3 |
| 标准包装： | 1 |
| 每 IC 通道数： | 1 - 单 |
| 输出电压： | 3.3V |
| 电流 - 输出： | 500mA |
| 输入电压： | 2.5 ~ 5.5V |
| 稳压器类型： | 正，固定式 |
| 工作温度： | -40°C ~ 125°C |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | ADP1715 |
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ADP1715/ADP1716
ADJUSTABLE OUTPUT VOLTAGE
(ADP1715 ADJUSTABLE)
The ADP1715 adjustable version can have its output voltage
set over a 0.8 V to 5.0 V range. The output voltage is set by
connecting a resistive voltage divider from OUT to ADJ. The
output voltage is calculated using the equation
ENABLE FEATURE
The ADP1715/ADP1716 use the EN pin to enable and disable
the OUT pin under normal operating conditions. As shown in
threshold, OUT turns on. When a falling voltage on EN crosses
the inactive threshold, OUT turns off.
V OUT = 0.8 V (1 + R1 / R2 )
(2)
where:
R1 is the resistor from OUT to ADJ.
R2 is the resistor from ADJ to GND.
EN
The maximum bias current into ADJ is 100 nA, so for less
than 0.5% error due to the bias current, use values less than
60 kΩ for R2.
1
OUT
TRACK MODE (ADP1716)
The ADP1716 includes a tracking mode feature. As shown in
nominal output voltage, OUT is equal to the voltage at TRK.
Otherwise, OUT regulates to its nominal output value.
4
3
2
1
V IN = 5V
V OUT = 1.6V
C OUT = 2.2μF
I LOAD = 10mA
TIME (1ms/DIV)
Figure 30. ADP1715 Adjustable Typical EN Pin Operation
As can be seen, the EN pin has hysteresis built in. This prevents
on/off oscillations that can occur due to noise on the EN pin as
it passes through the threshold points.
The EN pin active/inactive thresholds are derived from the IN
voltage. Therefore, these thresholds vary with changing input
voltage. Figure 31 shows typical EN active/inactive thresholds
when the input voltage varies from 2.5 V to 5.5 V.
1.4
1.3
0
1.2
EN ACTIVE
0
1
2
3
4
5
1.1
V TRK (V)
Figure 29. ADP1716 Output Voltage vs. Tracking Voltage
with Nominal Output Voltage Set to 3 V
For example, consider an ADP1716 with a nominal output
voltage of 3 V. If the voltage applied to its TRK pin is greater
1.0
0.9
0.8
0.7
EN INACTIVE
HYSTERESIS
than 3 V, OUT maintains a nominal output voltage of 3 V. If
the voltage applied to TRK is reduced below 3 V, OUT tracks
this voltage. OUT can track the TRK pin voltage from the
nominal value all the way down to 0 V. A voltage divider is
present from TRK to the error amplifier input with a divider
ratio equal to the divider from OUT to the error amplifier.
This sets the output voltage equal to the tracking voltage. Both
divider ratios are set by post-package trim, depending on the
desired output voltage.
Rev. 0 | Page 11 of 20
0.6
0.5
2.50 2.75 3.00 3.25 3.50 3.75 4.00 4.25 4.50 4.75 5.00 5.25 5.50
V IN (V)
Figure 31. Typical EN Pin Thresholds vs. Input Voltage
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADP1715ARMZ | 制造商:Analog Devices 功能描述:IC V REG LDO 0.5A ADJ SMD MSOP8 制造商:Analog Devices 功能描述:IC, V REG, LDO 0.5A ADJ, SMD, MSOP8 |
| ADP1715ARMZ-0.75R7 | 功能描述:IC REG LDO 0.75V .5A 8-MSOP 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:2.7V 输入电压:最高 5.5V 电压 - 压降（标准）:0.21V @ 150mA 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:SOT-23-5 细型，TSOT-23-5 供应商设备封装:TSOT-23-5 包装:剪切带 (CT) 产品目录页面:1100 (CN2011-ZH PDF) 其它名称:576-1852-1 |
| ADP1715ARMZ-0.85R7 | 功能描述:IC REG LDO 0.85V .5A 8-MSOP 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:2.7V 输入电压:最高 5.5V 电压 - 压降（标准）:0.21V @ 150mA 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:SOT-23-5 细型，TSOT-23-5 供应商设备封装:TSOT-23-5 包装:剪切带 (CT) 产品目录页面:1100 (CN2011-ZH PDF) 其它名称:576-1852-1 |
| ADP1715ARMZ-0.8-R7 | 功能描述:IC REG LDO 0.8V .5A 8-MSOP 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:2.7V 输入电压:最高 5.5V 电压 - 压降（标准）:0.21V @ 150mA 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:SOT-23-5 细型，TSOT-23-5 供应商设备封装:TSOT-23-5 包装:剪切带 (CT) 产品目录页面:1100 (CN2011-ZH PDF) 其它名称:576-1852-1 |
| ADP1715ARMZ-0.95R7 | 功能描述:IC REG LDO 0.95V .5A 8-MSOP 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:2.7V 输入电压:最高 5.5V 电压 - 压降（标准）:0.21V @ 150mA 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:SOT-23-5 细型，TSOT-23-5 供应商设备封装:TSOT-23-5 包装:剪切带 (CT) 产品目录页面:1100 (CN2011-ZH PDF) 其它名称:576-1852-1 |
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