|Category||Power Management => Regulators => Linear Voltage Regulators => Fixed|
|Description||AnyCAP® 50 ma Low Dropout Linear Regulator|
|Datasheet||Download ADP3308-2.85 datasheet
FEATURES 1.2% Accuracy Over Line and Load Regulations 25 C Ultralow Dropout Voltage: 80 mV Typical 50 mA Requires Only 0.47 F for Stability anyCAP = Stable with All Types of Capacitors (Including MLCC) Current and Thermal Limiting Low Noise Low Shutdown Current: 12 V Supply Range +85 C Ambient Temperature Range Several Fixed Voltage Options Ultrasmall SOT-23-5 Package Excellent Line and Load Regulations APPLICATIONS Cellular Telephones Notebook, Palmtop Computers Battery Powered Systems PCMCIA Regulator Bar Code Scanners Camcorders, Cameras GENERAL DESCRIPTION
The is a member of the ADP330x family of precision low dropout anyCAP voltage regulators. It is pin-for-pin and functionally compatible with National's LP2980, but offers performance advantages. The ADP3308 stands out from the conventional LDOs with a novel architecture and an enhanced process. Its patented design requires only 0.47 µF output capacitor for stability. This device is stable with any type of capacitor regardless of its ESR (Equivalent Serial Resistance) value, including ceramic types for space restricted applications. The ADP3308 achieves ± 1.2% accuracy at room temperature and ± 2.2% overall accuracy over temperature, line and load regulations. The dropout voltage of the ADP3308 is only 80 mV (typical) at 50 mA. This device also includes a current limit and a shutdown feature. In shutdown mode, the ground current is reduced to ~1 µA. The ADP3308 operates with a wide input voltage range from 12 V and delivers a load current in excess of 100 mA. The ADP3308 anyCAP LDO offers a wide range of output voltages. For 100 mA version, refer to the ADP3309 data sheet.anyCAP is a registered trademark of Analog Devices, Inc.
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2000
ADP3308-xxSPECIFICATIONS otherwise noted.) The following specifications apply to all voltage options.
Conditions VIN = VOUTNOM = 25°C VIN = VOUTNOM 50 mA VIN = VOUTNOM 0.1 mA VIN 0.1 mA VOUT 98% of VOUTNOM mA ON OFF 0 < VSD V @ VIN 12 V VSD 0 V, VIN = 25°C VSD 0 V, VIN 25°C @ VIN 85°C @ VIN 12 VLINE REGULATION LOAD REGULATION GROUND CURRENT GROUND CURRENT IN DROPOUT VOLTAGE
OUTPUT CURRENT IN SHUTDOWN MODE ERROR PIN OUTPUT LEAKAGE ERROR PIN OUTPUT "LOW" VOLTAGE PEAK LOAD CURRENT OUTPUT NOISE 5 V OUTPUT
NOTES 1 Ambient temperature 85 °C corresponds to a junction temperature 125 °C under typical full load test conditions. Specifications subject to change without notice.
Input Supply Voltage. +16 V Shutdown Input Voltage. +16 V Power Dissipation. Internally Limited Operating Ambient Temperature Range. to +125°C Operating Junction Temperature Range. to +125°C JA. 165°C/W JC. 92°C/W Storage Temperature Range. to +150°C Lead Temperature Range (Soldering 10 sec). 300°C Vapor Phase (60 sec). 215°C Infrared (15 sec). 220°C
*This is a stress rating only; operation beyond these limits can cause the device to be permanently damaged.
Function Regulator Input. Ground Pin. Active Low Shutdown Pin. Connect to ground to disable the regulator output. When shutdown is not used, this pin should be connected to the input pin. Open Collector. Output that goes low to indicate the output is about to go out of regulation or no connect. Output of the Regulator, fixed or 3.6 volts output voltage. Bypass to ground with µF or larger capacitor.*SOT = Surface Mount. Contact the factory for the availability of other output voltage options.
NOTES 1 See individual data sheet for detailed ordering information. 2 SOT = Surface Mount.
CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the ADP3308 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.
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