Datasheet ADP2105, ADP2106, ADP2107 (Analog Devices) - 5

制造商Analog Devices
描述2 Amp Synchronous, Step-Down DC-to-DC Converter
页数 / 页36 / 5 — Data Sheet. ADP2105/ADP2106/ADP2107. SPECIFICATIONS. Table 1. Parameter. …
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Data Sheet. ADP2105/ADP2106/ADP2107. SPECIFICATIONS. Table 1. Parameter. Min. Typ. Max. Unit. Test Conditions/Comments

Data Sheet ADP2105/ADP2106/ADP2107 SPECIFICATIONS Table 1 Parameter Min Typ Max Unit Test Conditions/Comments

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Data Sheet ADP2105/ADP2106/ADP2107 SPECIFICATIONS
VIN
=
3.6 V at TA = 25°C, unless otherwise noted.1
Table 1. Parameter Min Typ Max Unit Test Conditions/Comments
INPUT CHARACTERISTICS Input Voltage Range 2.7 5.5 V −40°C ≤ TJ ≤ +125°C Undervoltage Lockout Threshold 2.4 V VIN rising 2.2 2.6 V VIN rising, −40°C ≤ TJ ≤ +125°C 2.2 V VIN falling 2.0 2.5 V VIN falling, −40°C ≤ TJ ≤ +125°C Undervoltage Lockout Hysteresis2 200 mV VIN falling OUTPUT CHARACTERISTICS Output Regulation Voltage 3.267 3.3 3.333 V 3.3 V, load = 10 mA 3.3 V 3.3 V, VIN = 3.6 V to 5.5 V, no load to full load 3.201 3.399 V 3.3 V, VIN = 3.6 V to 5.5 V, no load to full load, −40°C ≤ TJ ≤ +125°C 1.782 1.8 1.818 V 1.8 V, load = 10 mA 1.8 V 1.8 V, VIN = 2.7 V to 5.5 V, no load to full load 1.746 1.854 V 1.8 V, VIN = 2.7 V to 5.5 V, no load to full load, −40°C ≤ TJ ≤ +125°C 1.485 1.5 1.515 V 1.5, load = 10 mA 1.5 V ADP210x-1.5 V, VIN = 2.7 V to 5.5 V, no load to full load 1.455 1.545 V ADP210x-1.5 V, VIN = 2.7 V to 5.5 V, no load to full load, −40°C ≤ TJ ≤ +125°C 1.188 1.2 1.212 V 1.2 V, load = 10 mA 1.2 V 1.2 V, VIN = 2.7 V to 5.5 V, no load to full load 1.164 1.236 V 1.2 V, VIN = 2.7 V to 5.5 V, no load to full load, −40°C ≤ TJ ≤ +125°C Load Regulation 0.4 %/A ADP2105 0.5 %/A ADP2106 0.6 %/A ADP2107 Line Regulation3 0.1 0.33 %/V ADP2105, measured in servo loop 0.1 0.3 %/V ADP2106 and ADP2107, measured in servo loop Output Voltage Range 0.8 VIN V ADJ FEEDBACK CHARACTERISTICS FB Regulation Voltage 0.8 V ADJ 0.784 0.816 V ADJ, −40°C ≤ TJ ≤ +125°C FB Bias Current −0.1 +0.1 µA ADJ, −40°C ≤ TJ ≤ +125°C 3 µA 1.2 V output voltage 6 µA 1.2 V output voltage, −40°C ≤ TJ ≤ +125°C 4 µA 1.5 V output voltage 8 µA 1.5 V output voltage, −40°C ≤ TJ ≤ +125°C 5 µA 1.8 V output voltage 10 µA 1.8 V output voltage, −40°C ≤ TJ ≤ +125°C 10 µA 3.3 V output voltage 20 µA 3.3 V output voltage, −40°C ≤ TJ ≤ +125°C Rev. E | Page 5 of 36 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL OPERATING CIRCUIT REVISION HISTORY FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE BOUNDARY CONDITION ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CONTROL SCHEME PWM MODE OPERATION PFM MODE OPERATION PULSE-SKIPPING THRESHOLD 100% DUTY CYCLE OPERATION (LDO MODE) DESIGN FEATURES Enable/Shutdown Synchronous Rectification Current Limit Short-Circuit Protection Undervoltage Lockout (UVLO) Thermal Protection Soft Start APPLICATIONS INFORMATION ADIsimPower DESIGN TOOL EXTERNAL COMPONENT SELECTION SETTING THE OUTPUT VOLTAGE INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION INPUT CAPACITOR SELECTION INPUT FILTER SOFT START PERIOD LOOP COMPENSATION BODE PLOTS LOAD TRANSIENT RESPONSE EFFICIENCY CONSIDERATIONS Power Switch Conduction Losses Inductor Losses Switching Losses Transition Losses THERMAL CONSIDERATIONS DESIGN EXAMPLE EXTERNAL COMPONENT RECOMMENDATIONS CIRCUIT BOARD LAYOUT RECOMMENDATIONS EVALUATION BOARD EVALUATION BOARD SCHEMATIC FOR ADP2107 (1.8 V) RECOMMENDED PCB LAYOUT (EVALUATION BOARD LAYOUT) APPLICATION CIRCUITS OUTLINE DIMENSIONS ORDERING GUIDE