High Accuracy, Ultralow I , 1.5 A, anyCAP ... - Analog Devices

1 High Accuracy, Ultralow IQ, A, anyCAP Low Dropout Regulator Data Sheet ADP3339. FEATURES FUNCTIONAL BLOCK DIAGRAM. High accuracy over line and load: at 25 C, Q1 OUT. IN. over temperature ADP3339. THERMAL R1. Ultralow dropout voltage: 230 mV (typical) at A PROTECTION CC. Requires only COUT = F for stability anyCAP = stable with any type of capacitor (including MLCC) DRIVER gm current and thermal limiting R2. Low noise BANDGAP. REF. 02191-0-001. V to 6 V input voltage range 40 C to +85 C ambient temperature range SOT-223 package GND. APPLICATIONS Figure 1. Notebooks, palmtop computers SCSI terminators Battery-powered systems ADP3339. VIN IN OUT VOUT. PCMCIA regulators 1 F 1 F. 02191-0-002. GND. Bar code scanners Camcorders, cameras Figure 2. Typical Application Circuit GENERAL DESCRIPTION. The ADP3339 is a member of the ADP33xx family of precision, (ESR), and is stable with any good quality capacitor, including low dropout, anyCAP voltage regulators.

2 The ADP3339 ceramic (MLCC) types for space-restricted applications. The operates with an input voltage range of V to 6 V and delivers ADP3339 achieves exceptional accuracy of at room a load current up to A. The ADP3339 stands out from the temperature and over temperature, line, and load conventional LDOs with a novel architecture and an enhanced variations. The dropout voltage of the ADP3339 is only 230 mV. process that enables it to offer performance advantages and (typical) at A. The device also includes a safety current limit higher output current than its competition. Its patented design and thermal overload protection. The ADP3339 has Ultralow requires only a F output capacitor for stability. This device quiescent current : 130 A (typical) in light load situations. is insensitive to output capacitor equivalent series resistance Rev. C. Information furnished by Analog Devices is believed to be accurate and reliable.

3 However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No One Technology Way, Box 9106, Norwood, MA 02062-9106, license is granted by implication or otherwise under any patent or patent rights of Analog Devices . Tel: Trademarks and registered trademarks are the property of their respective owners. Fax: 2001 2011 Analog Devices , Inc. All rights reserved. ADP3339 Data Sheet TABLE OF CONTENTS. Features .. 1 Theory of Operation ..9. 1 Applications Information .. 10. Functional Block Diagram .. 1 Capacitor Selection .. 10. General Description .. 1 output current Limit .. 10. Revision History .. 2 Thermal Overload Protection .. 10. 3 Calculating Power Dissipation .. 10. Absolute Maximum 4 Printed Circuit Board Layout Considerations .. 10. ESD 4 Outline Dimensions.

4 11. Pin Configuration and Function 5 Ordering Guide .. 11. Typical Performance Characteristics .. 6. REVISION HISTORY. 8/11 Rev. B to Rev. C. Changes to Ordering Guide .. 11. 4/11 Rev. A to Rev. B. Change to Features Section .. 1. Changed IL to ILOAD Throughout .. 3. Updated Outline Dimensions .. 11. Changes to Ordering Guide .. 11. 6/04 Rev. 0 to Rev. A. Updated Changes to Table 3. Changes to Thermal Overload Protection Section .. 10. Updated Outline Dimensions .. 12. Changes to Ordering Guide .. 12. 10/01 Revision 0: Initial Version Rev. C | Page 2 of 12. Data Sheet ADP3339. SPECIFICATIONS. VIN = V, CIN = COUT = 1 F, TJ = 40 C to +125 C, unless otherwise noted. Table 1. Parameter 1, 2 Symbol Conditions Min Typ Max Unit output . Voltage Accuracy 3 VOUT VIN = VOUTNOM + V to 6 V, ILOAD = mA to A, TJ = 25 C + %. VIN = VOUTNOM + V to 6 V, ILOAD = mA to A, TJ = 40 C to +125 C + %. VIN = VOUTNOM + V to 6 V, ILOAD = 100 mA to A, TJ = 150 C + %.

5 Line Regulation3 VIN = VOUTNOM + V to 6 V, TJ = 25 C mV/V. Load Regulation ILOAD = mA to A, TJ = 25 C mV/mA. Dropout Voltage VDROP VOUT = 98% of VOUTNOM. ILOAD = A 230 480 mV. ILOAD = 1 A 180 380 mV. ILOAD = 500 mA 150 300 mV. ILOAD = 100 mA 100 mV. Peak Load current ILDPK VIN = VOUTNOM + 1 V A. output Noise VNOISE f = 10 Hz to 100 kHz, CL = 10 F, ILOAD = A 95 V rms GROUND current . In Regulation IGND ILOAD = A 13 40 mA. ILOAD = 1 A 9 25 mA. ILOAD = 500 mA 5 15 mA. ILOAD = 100 mA 1 3 mA. ILOAD = mA 130 200 A. In Dropout IGND VIN = VOUTNOM 100 mV, ILOAD = mA 100 300 A. 1. All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC) methods. 2. Application stable with no load. 3. VIN = V for models with VOUTNOM V. Rev. C | Page 3 of 12. ADP3339 Data Sheet ABSOLUTE MAXIMUM RATINGS. Unless otherwise specified, all voltages are referenced to GND. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device.

6 This is a stress Table 2. rating only; functional operation of the device at these or any Parameter Rating other conditions above those listed in the operational sections Input Supply Voltage V to + V of this specification is not implied. Exposure to absolute Power Dissipation Internally limited maximum rating conditions for extended periods may affect Operating Ambient Temperature Range 40 C to +85 C device reliability. Only one absolute maximum rating may be Operating Junction Temperature Range 40 C to +150 C applied at any one time. JA, 4-Layer Board C/W. JC C/W. Storage Temperature Range 65 C to +150 C ESD CAUTION. Lead Temperature (Soldering 10 sec) 300 C. Vapor Phase (60 sec) 215 C. Infrared (15 sec) 220 C. Rev. C | Page 4 of 12. Data Sheet ADP3339. PIN CONFIGURATION AND FUNCTION DESCRIPTIONS. 3 IN. ADP3339. OUT 2 OUT. TOP VIEW. (Not to Scale) 1 GND. 02191-0-003. NOTES. 1. PIN 2 AND OUT TAB ARE. INTERNALLY CONNECTED.

7 Figure 3. 3-Lead SOT-223 Pin Configuration Table 3. Pin Function Descriptions Pin No. Mnemonic Description 1 GND Ground Pin. 2 OUT output of the Regulator. Bypass to ground with a 1 F or larger capacitor. 3 IN Regulator Input. Bypass to ground with a 1 F or larger capacitor. Rev. C | Page 5 of 12. ADP3339 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS. TA = 25 C, unless otherwise noted. 14. ILOAD = 0A VIN = 6V. VOUT = 12. VOUT = GROUND current (mA). 10. output VOLTAGE (V). ILOAD = 500mA 8. 6. ILOAD = 1A. 4. ILOAD = 2. 02191-0-007. 02191-0-004 0. 3 4 5 6 0 INPUT VOLTAGE (V) LOAD current (A). Figure 4. output Voltage vs. Input Voltage Figure 7. Ground current vs. Load current VIN = 6V VIN = 6V. VOUT = ILOAD = 1A. output VOLTAGE (%). output VOLTAGE (V). ILOAD = 10mA. ILOAD = 500mA. 0. ILOAD = 02191-0-008. 02191-0-005. 40 20 0 20 40 60 80 100 120 140. 0 JUNCTION TEMPERATURE ( C). LOAD current (A). Figure 5. output Voltage vs.

8 Load current Figure 8. output Voltage Variation Percentage vs. Junction Temperature 180 25. VOUT = VOUT = 160 ILOAD = 0A. 140 20. ILOAD = GROUND current ( A). GROUND current (mA). 120. 15. 100. ILOAD = 1A. 80 ILOAD = 10. 60. 40. 5. 20. ILOAD = 1mA. 02191-0-009. 02191-0-006. 0 0. 0 2 4 6 40 10 60 110 160. INPUT VOLTAGE (V) JUNCTION TEMPERATURE ( C). Figure 6. Ground current vs. Supply Voltage Figure 9. Ground current vs. Junction Temperature Rev. C | Page 6 of 12. Data Sheet ADP3339. 250. VOUT = VOUT = COUT = 10 F. ILOAD = 200. DROPOUT (mV). 150. VOLTS. 100. 5. 50. 4. 02191-0-013. 02191-0-010. 0. 0 40 80 120 140 180 220. LOAD current (mA) TIME ( s). Figure 10. Dropout Voltage vs. Load current Figure 13. Line Transient Response VOUT = VIN = 6V. ILOAD = COUT = 10 F. VOLTS. INPUT/ output VOLTAGE (V). 3 2 . 1 A. 0. 0. 02191-0-011. 02191-0-014. 0 1 2 3 4 5 6 7 8 9 10 0 200 400 600 800 1000. TIME ( s) TIME ( s). Figure 11.

9 Power-Up/Power-Down Figure 14. Load Transient Response VOUT = VIN = 6V. COUT = 1 F. COUT = 1 F ILOAD = VOLTS. VOLTS. A. 5 4 0. 02191-0-012. 02191-0-015. 40 80 120 140 180 220 0 200 400 600 800 1000. TIME ( s) TIME ( s). Figure 12. Line Transient Response Figure 15. Load Transient Response Rev. C | Page 7 of 12. ADP3339 Data Sheet 600. VIN = 6V. VOLTS. 500. 0. 400. RMS NOISE ( V). 3 300. 2 ILOAD = 200. A. 1. 0 100. ILOAD = 0A. 02191-0-016. 02191-0-018. 0 200 400 600 800 1000 0. 0 10 20 30 40 50. TIME ( s). CL ( F). Figure 16. Short-Circuit current Figure 18. RMS Noise vs. CL (10 Hz to 100 kHz). 0 100. VOLTAGE NOISE SPECTRAL DENSITY ( V/ Hz). VOUT = 10. 20 10. RIPPLE REJECTION (dB). 30. CL = 1 F. 40 ILOAD = 1. CL = 10 F. 50 ILOAD = CL = 1 F. 60 CL = 10 F. 70. 80 CL = 10 F ILOAD = 0 C = 1 F. L. 90 ILOAD = 0. 02191-0-017. 02191-0-019. 100 10 100 1k 10k 100k 1M 10 100 1k 10k 100k 1M. FREQUENCY (Hz) FREQUENCY (Hz). Figure 17.

10 Power Supply Ripple Rejection Figure 19. output Noise Density Rev. C | Page 8 of 12. Data Sheet ADP3339. THEORY OF OPERATION. The ADP3339 anyCAP LDO uses a single control loop for Most LDOs place very strict requirements on the range of ESR. regulation and reference functions. The output voltage is sensed values for the output capacitor because they are difficult to by a resistive voltage divider, consisting of R1 and R2, which is stabilize due to the uncertainty of load capacitance and resis- varied to provide the available output voltage option. Feedback tance. Moreover, the ESR value required to keep conventional is taken from this network by way of a series diode (D1) and a LDOs stable changes depending on load and temperature. second resistor divider (R3 and R4) to the input of an amplifier. These ESR limitations make designing with LDOs more A very high gain error amplifier is used to control this loop. The difficult because of their unclear specifications and extreme amplifier is constructed in such a way that equilibrium produces a variations over temperature.