Datasheet ADP5041 (Analog Devices) - 7
| 制造商 | Analog Devices |
| 描述 | Micro PMU with 1.2 A Buck, Two 300 mA LDOs, Supervisory, Watchdog, and Manual Reset |
| 页数 / 页 | 40 / 7 — Data Sheet. ADP5041. ABSOLUTE MAXIMUM RATINGS. Table 6. THERMAL … |
| 修订版 | B |
| 文件格式/大小 | PDF / 4.2 Mb |
| 文件语言 | 英语 |
Data Sheet. ADP5041. ABSOLUTE MAXIMUM RATINGS. Table 6. THERMAL RESISTANCE. Parameter Rating. Table 7. Thermal Resistance
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Data Sheet ADP5041 ABSOLUTE MAXIMUM RATINGS Table 6. THERMAL RESISTANCE Parameter Rating
Thermal performance is directly linked to printed circuit board AVIN to AGND −0.3 V to +6 V (PCB) design and operating environment. Careful attention to VIN1 to AVIN −0.3 V to +0.3 V PCB thermal design is required. PGND to AGDN −0.3 V to +0.3 V VIN2, VIN3, VOUTx, ENx, MODE, MR, WDI, −0.3 V to (AVIN + 0.3 V)
Table 7. Thermal Resistance
nRSTO, FBx, VTHR, SW to AGND
Package Type θJA θJC Unit
SW to PGND −0.3 V to (VIN1 + 0.3 V) 20-Lead, 0.5 mm pitch LFCSP 38 4.2 °C/W Storage Temperature Range −65°C to +150°C Operating Junction Temperature Range −40°C to +125°C Soldering Conditions JEDEC J-STD-020
ESD CAUTION
ESD Human Body Model 3000 V ESD Charged Device Model 1500 V ESD Machine Model 200 V Stresses at or above those listed under Absolute Maximum Ratings may cause permanent damage to the product. This is a stress rating only; functional operation of the product at these or any other conditions above those indicated in the operational section of this specification is not implied. Operation beyond the maximum operating conditions for extended periods may affect product reliability. Rev. B | Page 7 of 40 Document Outline FEATURES FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS GENERAL SPECIFICATIONS SUPERVISORY SPECIFICATIONS BUCK SPECIFICATIONS LDO1, LDO2 SPECIFICATIONS INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION POWER MANAGEMENT UNIT Thermal Protection Undervoltage Lockout Enable/Shutdown Active Pull-Down BUCK SECTION Control Scheme PWM Mode Power Save Mode (PSM) PSM Current Threshold Short-Circuit Protection Soft Start Current Limit 100% Duty Operation LDO SECTION SUPERVISORY SECTION Reset Output Manual Reset Input Watchdog Input APPLICATIONS INFORMATION BUCK EXTERNAL COMPONENT SELECTION Feedback Resistors Inductor Output Capacitor Input Capacitor LDO EXTERNAL COMPONENT SELECTION Feedback Resistors OUTPUT CAPACITOR Input Bypass Capacitor Input and Output Capacitor Properties SUPERVISORY SECTION Threshold Setting Resistors Watchdog Input Current Negative-Going Transients at the Monitored Rail Watchdog Software Considerations POWER DISSIPATION/THERMAL CONSIDERATIONS Buck Regulator Power Dissipation LDO Regulator Power Dissipation Junction Temperature APPLICATION DIAGRAM PCB LAYOUT GUIDELINES SUGGESTED LAYOUT BILL OF MATERIALS FACTORY PROGRAMMABLE OPTIONS OUTLINE DIMENSIONS ORDERING GUIDE
Thermal performance is directly linked to printed circuit board AVIN to AGND −0.3 V to +6 V (PCB) design and operating environment. Careful attention to VIN1 to AVIN −0.3 V to +0.3 V PCB thermal design is required. PGND to AGDN −0.3 V to +0.3 V VIN2, VIN3, VOUTx, ENx, MODE, MR, WDI, −0.3 V to (AVIN + 0.3 V)
Table 7. Thermal Resistance
nRSTO, FBx, VTHR, SW to AGND
Package Type θJA θJC Unit
SW to PGND −0.3 V to (VIN1 + 0.3 V) 20-Lead, 0.5 mm pitch LFCSP 38 4.2 °C/W Storage Temperature Range −65°C to +150°C Operating Junction Temperature Range −40°C to +125°C Soldering Conditions JEDEC J-STD-020
ESD CAUTION
ESD Human Body Model 3000 V ESD Charged Device Model 1500 V ESD Machine Model 200 V Stresses at or above those listed under Absolute Maximum Ratings may cause permanent damage to the product. This is a stress rating only; functional operation of the product at these or any other conditions above those indicated in the operational section of this specification is not implied. Operation beyond the maximum operating conditions for extended periods may affect product reliability. Rev. B | Page 7 of 40 Document Outline FEATURES FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS GENERAL SPECIFICATIONS SUPERVISORY SPECIFICATIONS BUCK SPECIFICATIONS LDO1, LDO2 SPECIFICATIONS INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION POWER MANAGEMENT UNIT Thermal Protection Undervoltage Lockout Enable/Shutdown Active Pull-Down BUCK SECTION Control Scheme PWM Mode Power Save Mode (PSM) PSM Current Threshold Short-Circuit Protection Soft Start Current Limit 100% Duty Operation LDO SECTION SUPERVISORY SECTION Reset Output Manual Reset Input Watchdog Input APPLICATIONS INFORMATION BUCK EXTERNAL COMPONENT SELECTION Feedback Resistors Inductor Output Capacitor Input Capacitor LDO EXTERNAL COMPONENT SELECTION Feedback Resistors OUTPUT CAPACITOR Input Bypass Capacitor Input and Output Capacitor Properties SUPERVISORY SECTION Threshold Setting Resistors Watchdog Input Current Negative-Going Transients at the Monitored Rail Watchdog Software Considerations POWER DISSIPATION/THERMAL CONSIDERATIONS Buck Regulator Power Dissipation LDO Regulator Power Dissipation Junction Temperature APPLICATION DIAGRAM PCB LAYOUT GUIDELINES SUGGESTED LAYOUT BILL OF MATERIALS FACTORY PROGRAMMABLE OPTIONS OUTLINE DIMENSIONS ORDERING GUIDE