High Accuracy anyCAP* a 100 mA Low Dropout Linear Regulator ADP3301 FEATURES FUNCTIONAL BLOCK DIAGRAM High Accuracy (Over Line and Load Regulations at +258C): 60.8% ADP3301 Q1 Ultralow Dropout Voltage: 100 mV Typical 100 mA IN OUT Requires Only C = 0.47 mF for Stability O THERMAL R1 CC anyCAP* = Stable with All Types of Capacitors PROTECTION ERR Current and Thermal Limiting Q2 DRIVER Gm Low Noise SD Dropout Detector R2 BANDGAP Low Shutdown Current: 1 mA REF Several Fixed Voltage Options GND 3.0 V to 12 V Supply Range 208C to +858C Ambient Temperature Range Thermally Enhanced SO-8 Package Excellent Line and Load Regulations APPLICATIONS Cellular Telephones Notebook, Palmtop Computers The ADP3301 operates with a wide input voltage range from Battery Powered Systems 3 V to 12 V and delivers a load current in excess of 100 mA. It Portable Instruments features an error flag that signals when the device is about to Post Regulator for Switching Supplies lose regulation or when the short circuit or thermal overload Bar Code Scanners protection is activated. Other features include shutdown and optional noise reduction capabilities. The ADP330x anyCAP* LDO family offers a wide range of output voltages and output GENERAL DESCRIPTION 200 current levels from 50 mA to mA: The ADP3301 is a member of the ADP330x family of precision low dropout anyCAP* voltage regulators. The ADP3301 ADP3300 (50 mA, SOT-23) stands out from the conventional LDOs with a novel architec- ADP3303 (200 mA) ture, an enhanced process and a new package. Its patented design includes a noninverting wideband driver and a stage that permits the use of an internal pole splitting capacitor to stabilize the feedback loop with a single output capacitor as small as 0.47 F. This device is stable with any type of capacitor NR 3 regardless of its ESR (Equivalent Serial Resistance) value, ADP3301-5.0 including ceramic types (MLCC) for space restricted applica- 7 1 V IN tions. The ADP3301 achieves exceptional accuracy of 0.8% at IN OUT V = +5V OUT 8 2 R1 room temperature and 1.4% overall accuracy over tempera- C1 C2 330k 0.47F 0.47F ture, line and load regulations. The dropout voltage of the 6 ERR E OUT ADP3301 is only 100 mV (typical) at 100 mA. 5 4 In addition to the new architecture and process, ADIs new ON OFF proprietary thermally enhanced package (Thermal Coastline) can handle 1 W of power dissipation without external heat sink GND or large copper surface on the PC board. This keeps PC board real estate to a minimum and makes the ADP3301 very Figure 1. Typical Application Circuit attractive for use in portable equipment. *anyCAP is a trademark of Analog Devices Inc. REV. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. use, nor for any infringements of patents or other rights of third parties Tel: 781.329.4700 World Wide Web Site: ADP3301xxSPECIFICATIONS 1 ( T = 208C to +858C, V = 7 V, C = 0.47 mF, C = 0.47 mF, unless otherwise noted) ELECTRICAL CHARACTERISTICS A IN IN OUT Parameter Symbol Conditions Min Typ Max Units OUTPUT VOLTAGE V V = Nom V +0.3 V to 12 V OUT IN OUT ACCURACY I = 0.1 mA to 100 mA L T = +25C 0.8 +0.8 % A V = Nom V +0.3 V to 12 V IN OUT I = 0.1 mA to 100 mA 1.4 +1.4 % L LINE REGULATION V V = Nom V +0.3 V to 12 V O IN OUT V T = +25C 0.024 mV/V IN A LOAD REGULATION V I = 0.1 mA to 100 mA O L I T = +25C 0.014 mV/mA L A GROUND CURRENT I I = 100 mA 0.85 2 mA GND L I = 0.1 mA 0.18 0.3 mA L GROUND CURRENT I V = 2.5 V GND IN IN DROPOUT I = 0.1 mA 0.6 1.2 mA L DROPOUT VOLTAGE V V = 98% of V Nominal DROP OUT O I = 100 mA 0.1 0.2 V L I = 10 mA 0.02 0.07 V L I = 1 mA 0.003 0.03 V L SHUTDOWN THRESHOLD V ON 2.0 0.9 V THSD OFF 0.9 0.3 V SHUTDOWN PIN I 0 < V < 5 V 1 A SDIN SD INPUT CURRENT 5 V 12 V V = 12 V 22 A SD IN GROUND CURRENT IN I V = 0, V = 12 V Q SD IN SHUTDOWN MODE T = +25C1A A V = 0, V = 12 V SD IN T = +85C5A A OUTPUT CURRENT IN I T = +25C V = 12 V 2 A OSD A IN SHUTDOWN MODE T = +85C V = 12 V 4 A A IN ERROR PIN OUTPUT LEAKAGE I V = 5 V 13 A EL EO ERROR PIN OUTPUT LOW VOLTAGE V I = 400 A 0.13 0.3 V EOL SINK PEAK LOAD CURRENT I V = Nom V + 1 V 200 mA LDPK IN OUT THERMAL REGULATION V V = 12 V, I = 100 mA O IN L V T = 10 ms 0.015 %/W O OUTPUT NOISE V f = 10 Hz100 kHz NOISE 5 V OUTPUT C = 0 100 V rms NR C = 10 nF, C = 10 F30 V rms NR L NOTES 1 Ambient temperature of +85C corresponds to a typical junction temperature of +125C under typical full load test conditions. Specifications subject to change without notice. REV. A 2