Features: • 1.1µA Quiescent Current
• Low Dropout: 200mV (typical)
• Guaranteed 150mA Output
• High Accuracy: ±2%
• Current Limit Protection
• Over-Temperature Protection
• Extremely Low Power Shutdown Mode
• Low Temperature Coefficient
• Factory-Programmed Output Voltages
- 1.6V to 3.5V
• Stable Operation With Virtually Any Output
Capacitor Type
• Active High or Low Enable Pin
• 4kV ESD
• 5-Pin SOT23 or 8-Pin SC70JW Package
• -40°C to +85°C Temperature RangeApplication• Cellular Phones
• Digital Cameras
• Handheld Electronics
• Notebook Computers
• PDAs
• Portable Communication Devices
• Remote Controls
Pinout
Specifications
|
Symbol |
Description
|
Value
|
Units |
|
VIN |
Input Voltage, <30ms, 10% DC (continuous max = 6.0V) |
-0.3 to 7 |
V
|
|
VEN |
EN (EN) to GND Voltage |
-0.3 to 6 |
V |
|
V ENIN(MAX) |
Maximum EN (EN) to Input Voltage |
0.3 |
V |
|
IOUT |
Maximum DC Output Current |
PD/(VIN-VO) |
mA |
|
TJ |
Operating Junction Temperature Range |
-40 to 150 |
°C |
- 1.1A quiescent current
- VIN 5.5V (max)*
- Low dropout: 200 mV (typical)
- Guaranteed 150 mA output
- High accuracy: 2%
- Current limit protection
- Over-temperature protection
- Extremely low power shutdown mode
- Low temperature coefficient
- Factory-programmed output voltages: 1.6V to 3.5V
- Stable operation with virtually any output capacitor type
- Active high or low Enable pin
- 4kV ESD
- 5-pin SOT23 or 8-pin SC70JW packages
* The AAT3221 can withstand transients up to 7V. Please refer to the product datasheet for more information.
DescriptionThe AAT3221 and AAT3222 PowerLinear NanoPower low dropout (LDO) linear regulators are ideal for portable applications where extended battery life is critical. These devices feature extremely low quiescent current, typically 1.1µA. Dropout voltage is also very low, typically less than 200mV at the maximum output current of 150mA.
The AAT3221/2 have an enable pin feature which, when asserted, will enter the LDO regulator into shutdown mode, removing power from its load and offering extended power conservation capabilities for portable battery-powered applications. The AAT3221/2 have output short-circuit and overcurrent protection. In addition, the devices also have an over-temperature protection circuit, which will shut down the LDO regulator during extended over-current events. The devices are available with active high or active low enable input.
The AAT3221 and AAT3222 are available in Pb-free, space-saving 5-pin SOT23 packages. The AAT3221 is also available in a Pb-free, 8-pin SC70JW package. The device is rated over the -40°C to +85°C temperature range. Since only a small, 1µF ceramic output capacitor is recommended, often the only space used is that occupied by the AAT3221/2 itself. The AAT3221/2 provide a compact and cost-effective voltage conversion solution.
The AAT3221 and AAT3122 are similar to the AAT3220, with the exception that they offer further power savings with an enable pin.
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The AAT3221 and AAT3222 PowerLinear NanoPower Low Dropout Linear Regulators are ideal for portable applications where extended battery life is critical. This device features extremely low quiescent current which is typically 1.1A. Dropout voltage is also very low, typically less than 200mV at the maximum output current of 150mA. The AAT3221/2 has an Enable pin feature, which when asserted will enter the LDO regulator into a shutdown mode, removing power from its load and offering extended power conservation capabilities for portable battery-powered applications. The AAT3221/2 has output short-circuit and over-current protection. In addition, the device has an over-temperature protection circuit that will shutdown the LDO regulator during extended over-current events. It is available with active high or active low enable input. Since only a small, 1F ceramic output capacitor is recommended, often the only space used is that occupied by the AAT3221/2 itself. The AAT3221/2 is truly a compact and cost-effective voltage conversion solution. The AAT3221 is available in the 8-pin SC70JW package. The AAT3221/2 is also available in a space-saving 5-pin SOT23 package. The device is rated over the -40C to +85C temperature range.
AAT3221 Data Sheet
