link to page 3 ADP3051SPECIFICATIONS1 VIN = 3.6 V @ TA = –40°C to +85°C, unless otherwise noted. Table 1. Parameter ConditionsMinTypMaxUnit SUPPLY Input Voltage Range 2.7 5.5 V Quiescent Supply Current VFB = 1.0 V 180 300 µA Shutdown Supply Current SHDN = 0 V 10 25 µA PWM COMPARATOR Minimum Duty Ratio 0 % Maximum Duty Ratio 100 % OSCILLATOR Oscillator Frequency VCOMP ≥ 1.5 V, VOUT = 0.7 V 410 550 690 kHz Foldback Frequency VOUT < 0.3 V 200 kHz OUTPUT STAGE On Resistance, N Channel ISW = 150 mA 150 mΩ Switch Leakage Current, N Channel VIN = 5.0 V, VSW = 0 V 1 µA On Resistance, P Channel FB = GND 190 mΩ Switch Leakage Current, P Channel VSW = 5.0 V 1 µA Current Limit Threshold 680 1000 1320 mA ERROR AMPLIFIER Feedback Regulation Voltage TA = 25°C 783 800 821 mV 770 830 mV Feedback Input Bias Current 5 nA Current Sense Gain 2.9 Ω Transconductance 0.32 mS Maximum Sink Current 33 µA Maximum Source Current 33 µA UNDERVOLTAGE LOCKOUT Undervoltage Lockout Threshold VIN rising 1.9 2.6 V Undervoltage Lockout Hysteresis 55 mV SHDN INPUT THRESHOLD VOLTAGES Input High Threshold Voltage Referenced to IN −0.5 V Input Low Threshold Voltage 0.4 V 1 All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC). Rev. 0 | Page 3 of 16 Document Outline FEATURES APPLICATIONS GENERAL DESCRIP TYPICAL APPLICATION CIRCUIT TABLE OF CONTENTS SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION PWM CONTROL MODE TRI-MODE OPERATION 100% DUTY CYCLE OPERATION SHUTDOWN UNDERVOLTAGE LOCKOUT (UVLO) SHORT-CIRCUIT PROTECTION AND RECOVERY APPLICATIONS RECOMMENDED COMPONENTS DESIGN PROCEDURE Setting the Output Voltage Inductor Selection OUTPUT CAPACITOR SELECTION Input Capacitor Selection Compensation Design CIRCUIT BOARD LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE
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