Datasheet ADP1822 (Analog Devices) - 4

ADP1822 Data Sheet Parameter Conditions Min Typ Max Unit
TRACKING Tracking Comparator Input Offset –200 +200 mV Tracking Comparator Delay 100 ns Tracking Comparator Common-Mode Input Voltage Range 0 VVCC V TRKP Pull-Up Resistance Pull-up to VCC 200 kΩ TRKN Pull-Down Resistance 200 kΩ LOGIC THRESHOLDS (SHDN, SYNC, FREQ, MAR, MSEL) Input High Voltage VVCC = 3.7 V to 5.5 V 2.0 V Input Low Voltage VVCC = 3.7 V to 5.5 V 0.8 V SYNC, FREQ Input Leakage Current SYNC = FREQ = GND 0.1 1 µA SHDN, MAR, MSEL Pull-Down Resistance 100 kΩ THERMAL SHUTDOWN Thermal Shutdown Threshold 145 °C Thermal Shutdown Hysteresis 10 °C PWGD OUTPUT FB Overvoltage Threshold VFB rising 750 mV FB Overvoltage Hysteresis 35 mV FB Undervoltage Threshold VFB rising 550 mV FB Undervoltage Hysteresis 35 mV PWGD Off Current VPWGD = 5 V 1 µA PWGD Low Voltage IPWGD = 10 mA 150 500 mV Rev. D | Page 4 of 24 Document Outline Features Applications General Description Revision History Specifications Absolute Maximum Ratings ESD Caution Simplified Block Diagram Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Current-Limit Scheme Output Voltage Margining Output Voltage Tracking Soft Start High-Side Driver (BST and DH) Low-Side Driver (DL) Input Voltage Range Setting the Output Voltage Switching Frequency Control Compensation Power-Good Indicator Shutdown Control Application Information Selecting the Input Capacitor Output LC Filter Selecting the MOSFETS Setting the Current Limit Feedback Voltage Divider Setting the Voltage Margin Compensating the Regulator Compensation Using the ESR Zero Compensation Using Feed-Forward Compensation Using Both the ESR and Feed-Forward Zeros Setting the Soft Start Period Synchronizing the Converter Setting the Output Voltage Tracking Application Circuits Outline Dimensions Ordering Guide