参数资料
| 型号： | AP7332-3333W6-7 |
| 厂商： | Diodes Inc |
| 文件页数： | 12/18页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3.3V .3A SOT26 |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 3.3V |
| 输入电压： | 2 V ~ 6 V |
| 电压 - 压降（标准）： | 0.25V @ 300mA |
| 稳压器数量： | 2 |
| 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： | SOT-23-6 |
| 供应商设备封装： | SOT-26 |
| 包装： | 标准包装 |
| 其它名称： | AP7332-3333W6-7DIDKR |
AP7332
DUAL 300mA LOW QUIESCENT CURRENT FAST
TRANSIENT LOW DROPOUT LINEAR REGULATOR
Application Note
Input Capacitor
A 1 μ F ceramic capacitor is recommended between IN and GND pins to decouple input power supply glitch and noise. The
amount of the capacitance may be increased without limit. This input capacitor must be located as close as possible to the
device to assure input stability and reduce noise. For PCB layout, a wide copper trace is required for both IN and GND pins.
A lower ESR capacitor type allows the use of less capacitance, while higher ESR type requires more capacitance.
Output Capacitor
The output capacitor is required to stabilize and improve the transient response of the LDO. The AP7332 is stable with very
small ceramic output capacitors. Using a ceramic capacitor value that is at least 1 μ F with ESR ≧ 10m ? on the output ensures
stability. Higher capacitance values help to improve line and load transient response. The output capacitance may be
increased to keep low undershoot and overshoot. Output capacitor must be placed as close as possible to OUT and GND
pins.
Region of Stable C OUT ESR vs. Load Current
100
Unstable Range
10
1
Stable Range
=
C IN =C OUT1 0.1 C OUT2 =1 μ F
0.01
Unstable Range
0.001
0
20
50
100
150
200
250
300
Load Current (mA)
No Load Stability
Other than external resistor divider, no minimum load is required to keep the device stable. The device will remain stable and
regulated in no load condition.
ON/OFF Input Operation
The AP7332 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 .
AP7332
Document number: DS35132 Rev. 3 - 2
12 of 18
August 2011
? Diodes Incorporated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AP7333 | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:300mA, Low Quiescent Current, Fast Transient Low Dropout Linear Regulator |
| AP7333-10SAG-7 | 功能描述:低压差稳压器 - LDO LDO SOT-23 1.0V/300MA 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 |
| AP7333-10SRG-7 | 功能描述:低压差稳压器 - LDO LDO SOT-23R 1.0V/300MA 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 |
| AP7333-12SAG-7 | 功能描述:低压差稳压器 - LDO LDO SOT-23 1.2V/300MA 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 |
| AP7333-12SRG-7 | 功能描述:低压差稳压器 - LDO LDO SOT-23R 1.2V/300MA 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 |
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