Datasheet ADP5134 (Analog Devices) - 4

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ADP5134 Data Sheet BUCK1 AND BUCK2 SPECIFICATIONS
VAVIN = VVIN1 = VVIN2 = 2.5 V to 5.5 V, TJ = −40°C to +125°C for minimum/maximum specifications, and TA = 25°C for typical specifications, unless otherwise noted. All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC).
Table 3. Parameter Symbol Test Conditions/Comments Min Typ Max Unit
OUTPUT CHARACTERISTICS Output Voltage Accuracy ΔVVOUT1/VVOUT1, PWM mode, ILOAD1 = ILOAD2 = 0 mA −1.8 +1.8 % ΔVVOUT2/VVOUT2 Line Regulation (ΔVVOUT1/VVOUT1)/ΔVVIN1, PWM mode −0.05 %/V (ΔVVOUT2/VVOUT2)/ΔVVIN2 Load Regulation (ΔVVOUT1/VVOUT1)/ΔIVOUT1, ILOAD = 0 mA to 1200 mA, PWM mode −0.1 %/A (ΔVVOUT2/VVOUT2)/ΔIVOUT2 VOLTAGE FEEDBACK VFB1, VFB2 Models with adjustable outputs 0.491 0.5 0.509 V OPERATING SUPPLY CURRENT IIN MODE = ground BUCK1 Only ILOAD1 = 0 mA, device not switching, all 44 μA other channels disabled BUCK2 Only ILOAD2 = 0 mA, device not switching, all 55 μA other channels disabled BUCK1 and BUCK2 ILOAD1 = ILOAD2 = 0 mA, device not 67 μA switching, LDO channels disabled PSM CURRENT THRESHOLD IPSM PSM to PWM operation 100 mA SWx CHARACTERISTICS SWx On Resistance RNFET VVIN1 = VVIN2 = 3.6 V 155 240 mΩ RPFET VVIN1 = VVIN2 = 3.6 V 205 310 mΩ RNFET VVIN1 = VVIN2 = 5.5 V 137 204 mΩ RPFET VVIN1 = VVIN2 = 5.5 V 162 243 mΩ Current Limit ILIMIT1, ILIMIT2 PFET switch peak current limit 1600 1950 2300 mA ACTIVE PULL-DOWN RPDWN-B VVIN1 = VVIN2 = 3.6 V, channels disabled 75 Ω OSCILLATOR FREQUENCY fSW 2.5 3.0 3.5 MHz
LDO1 AND LDO2 SPECIFICATIONS
VVIN3 = (VVOUT3 + 0.5 V) or 1.7 V (whichever is greater) to 5.5 V, VVIN4 = (VVOUT4 + 0.5 V) or 1.7 V (whichever is greater) to 5.5 V, CIN = COUT = 1 µF, TJ = −40°C to +125°C for minimum/maximum specifications, and TA = 25°C for typical specifications, unless otherwise noted. All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC).
Table 4. Parameter Symbol Test Conditions/Comments Min Typ Max Unit
INPUT VOLTAGE RANGE VVIN3, VVIN4 1.7 5.5 V OPERATING SUPPLY CURRENT Bias Current per LDO1 IVIN3BIAS/IVIN4BIAS IVOUT3 = IVOUT4 = 0 µA 10 30 µA IVOUT3 = IVOUT4 = 10 mA 60 100 µA IVOUT3 = IVOUT4 = 300 mA 165 245 µA Total System Input Current IIN Includes all current into AVIN, VIN1, VIN2, VIN3, and VIN4 LDO1 or LDO2 Only IVOUT3 = IVOUT4 = 0 µA, all other channels 63 µA disabled LDO1 and LDO2 IVOUT3 = IVOUT4 = 0 µA, buck channels disabled 84 µA Rev. A | Page 4 of 28 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS GENERAL SPECIFICATIONS BUCK1 AND BUCK2 SPECIFICATIONS LDO1 AND 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 Power-Good Output Thermal Protection Undervoltage Lockout Precision Enable and Shutdown Control BUCK1 AND BUCK2 Control Scheme PWM Mode Power Save Mode (PSM) PSM Current Threshold Oscillator and Phasing of Inductor Switching Short-Circuit Protection Buck Regulator Soft Start Current Limit 100% Duty Operation Active Pull-Down Resistors LDO1 AND LDO2 LDO Regulator Soft Start APPLICATIONS INFORMATION BUCK REGULATOR EXTERNAL COMPONENT SELECTION Feedback Resistors Inductor Output Capacitor Input Capacitor LDO REGULATOR EXTERNAL COMPONENT SELECTION Feedback Resistors Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties POWER DISSIPATION AND THERMAL CONSIDERATIONS BUCK REGULATOR POWER DISSIPATION LDO Regulator Power Dissipation JUNCTION TEMPERATURE PCB LAYOUT GUIDELINES TYPICAL APPLICATION SCHEMATICS BILL OF MATERIALS OUTLINE DIMENSIONS ORDERING GUIDE