Datasheet ADP5300 (Analog Devices) - 5

Data Sheet ADP5300 Parameter Symbol Min Typ Max Unit Test Conditions/Comments
Hysteresis Mode Fixed VID Code Threshold Accuracy VFB_HYS_FIX −0.75 +0.75 % TJ = 25°C from Active Mode to Standby Mode −2.5 +2.5 % −40°C ≤ TJ ≤ +125°C Adjustable VID Code Threshold VFB_HYS_ADJ −3 +3 % −40°C ≤ TJ ≤ +125°C Accuracy from Active Mode to Standby Mode Hysteresis of Threshold Accuracy VFB_HYS (HYS) 1 % from Active Mode to Standby Mode Feedback Bias Current IFB 66 95 nA Output Option 0, VOUT = 2.5 V 25 45 nA Output Option 1, VOUT = 1.3 V SW PIN High-Side Power FET On Resistance RDS (ON) H 386 520 mΩ Pin to pin measurement Low-Side Power FET On Resistance RDS (ON) L 299 470 mΩ Pin to pin measurement Current Limit in PWM Mode ILIM_PWM 800 1000 1200 mA SYNC/MODE = high Peak Current in Hysteresis Mode ILIM_HYS 265 mA SYNC/MODE = low Minimum On Time tMIN_ON 40 70 ns VOUTOK PIN Monitor Threshold VOUTOK (RISE) 87 90 93 % Monitor Hysteresis VOUTOK (HYS) 3 % Monitor Rising Delay tVOUTOK_RISE 40 μs Monitor Falling Delay tVOUTOK_FALL 10 μs Leakage Current IVOUTOK_LEAKAGE 0.1 1 μA Output Low Voltage VOUTOK_LOW 50 80 mV IVOUTOK = 100 μA SOFT START Default Soft Start Time tSS 350 μs Factory trim, 1 bit (350 μs and 2800 μs) Start-Up Delay tSTART_DELAY 2 ms Delay from the EN pin being pulled high COUT DISCHARGE SWITCH ON RESISTANCE RDIS 290 Ω THERMAL SHUTDOWN Threshold TSHDN 142 °C Hysteresis THYS 127 °C Rev. A | Page 5 of 21 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION REVISION HISTORY DETAILED FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION BUCK REGULATOR OPERATIONAL MODES PWM Mode Hysteresis Mode Mode Selection OSILLATOR AND SYNCHRONIZATION ADJUSTABLE AND FIXED OUTPUT VOLTAGES UNDERVOLTAGE LOCKOUT (UVLO) ENABLE/DISABLE CURRENT LIMIT SHORT-CIRCUIT PROTECTION SOFT START STARTUP WITH PRECHARGED OUTPUT 100% DUTY OPERATION ACTIVE DISCHARGE VOUTOK FUNCTION STOP SWITCHING THERMAL SHUTDOWN APPLICATIONS INFORMATION EXTERNAL COMPONENT SELECTION SELECTING THE INDUCTOR OUTPUT CAPACITOR INPUT CAPACITOR EFFICIENCY Power Switch Conduction Losses Inductor Losses Driver Losses Transition Losses CIRCUIT BOARD LAYOUT RECOMMENDATIONS TYPICAL APPLICATION CIRCUITS FACTORY PROGRAMMABLE OPTIONS OUTLINE DIMENSIONS ORDERING GUIDE