Datasheet ADP5022 (Analog Devices) - 7

ADP5022 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS BALL A1 INDICATOR 1 2 3 4 VOUT3 AGND VIN3 VDDA A VIN1 EN1 EN2 VIN2 B SW1 EN3 MODE SW2 C PGND1 VOUT1 VOUT2 PGND2 D TOP VIEW
02 0
(BALL SIDE DOWN)
3- 25
Not to Scale
08 Figure 3. Pin Configuration
Table 6. Pin Function Descriptions Pin No. Mnemonic Description
A1 VOUT3 LDO Output Voltage and Sensing Input. A2 AGND Analog Ground. A3 VIN3 LDO Input Supply (VIN3 ≤ VIN1 = VIN2 = VDDA). A4 VDDA Supply Input for the Housekeeping Block and UVLO Sensing. B1 VIN1 Buck1 Input Supply (VIN1 = VIN2 = VDDA). B2 EN1 Buck1 Activation. Set EN1 = high: turn on Buck1. Set EN1 = low: turn off Buck1. B3 EN2 Buck2 Activation. Set EN2 = high: turn on Buck2. Set EN2 = low: turn off Buck2. B4 VIN2 Buck2 Input Supply (VIN2 = VIN1 = VDDA). C1 SW1 Buck1 Switching Node. C2 EN3 LDO Activation. Set EN3 = high: turn on LDO. EN3 = low: turn off LDO. C3 MODE Buck1/Buck2 Operating Mode: MODE = high: forced PWM operation. MODE = low: auto PWM/PSM operation. C4 SW2 Buck2 Switching Node. D1 PGND1 Dedicated Power Ground for Buck1. D2 VOUT1 Buck1 Output Voltage Sensing Input. D3 VOUT2 Buck2 Output Voltage Sensing Input. D4 PGND2 Dedicated Power Ground for Buck2. Rev. C | Page 7 of 28 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS BUCK1 AND BUCK2 SPECIFICATIONS LDO SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL DATA THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION POWER MANAGEMENT UNIT Thermal Protection Undervoltage Lockout Enable/Shutdown BUCK SECTION Control Scheme PWM Mode Power Save Mode (PSM) PSM Current Threshold Oscillator/Phasing of Inductor Switching Enable/Shutdown Short-Circuit Protection Soft Start Current Limit 100% Duty Operation LDO SECTION LDO Undervoltage Lockout APPLICATIONS INFORMATION BUCK EXTERNAL COMPONENT SELECTION Inductor Output Capacitor Input Capacitor LDO CAPACITOR SELECTION Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties PCB LAYOUT GUIDELINES EVALUATION BOARD SCHEMATICS AND ARTWORK SUGGESTED LAYOUT OUTLINE DIMENSIONS ORDERING GUIDE