Datasheet ADP5037 (Analog Devices) - 8

ADP5037 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS
VIN1= VIN2 = VIN3= VIN4 = 3.6 V, TA = 25°C, unless otherwise noted.
3.310 140 3.305 120 –40°C A) 3.300 µ ( 100 NT 3.295 +25°C 80 (V) 3.290 CURRE UT O NT V 60 CE 3.285 S E +85°C UI 40 Q 3.280 20 3.275 0 3.270 2.3 2.8 3.3 3.8 4.3 4.8 5.3
039
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
100
INPUT VOLTAGE (V) I
09887-
OUT (A)
09887- Figure 3. System Quiescent Current vs. Input Voltage, VOUT1 = 3.3 V, Figure 6. BUCK1 Load Regulation Across Temperature, VIN = 4.2 V, VOUT2 = 1.8 V, VOUT3 = 1.2 V, VOUT4 = 3.3 V, All Channels Unloaded VOUT1 = 3.3 V, Auto Mode
1.812 T 1.810 SW –40°C 4 1.808 IOUT 2 +25°C 1.806 (V) UT OV 1.804 VOUT 1 EN 1.802 +85°C 1.800 3 1.798 CH1 2.00V BW CH2 50.0mA Ω B M 40.0µs A CH3 2.2V W 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
101 049
CH3 5.00V B CH4 5.00V B W W I T 11.20% OUT (A)
09887- 09887- Figure 4. BUCK1 Startup, V Figure 7. BUCK2 Load Regulation Across Temperature, V OUT1 = 1.8 V, IOUT1 = 5 mA IN = 3.6 V, VOUT2 = 1.8 V, Auto Mode
0.808 T 0.807 SW 4 IOUT 0.806 2 –40°C +25°C (V) 0.805 UT OV VOUT +85°C 1 0.804 EN 0.803 3 0.802 CH1 2.00V BW CH2 50.0mA Ω BW M 40.0µs A CH3 2.2V 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
102 048
CH3 5.00V BW CH4 5.00V BW I T 11.20% OUT (A)
09887- 09887- Figure 5. BUCK2 Startup, V Figure 8. BUCK1 Load Regulation Across Input Voltage, V OUT2 = 3.3 V, IOUT2 = 10 mA IN = 3.6 V, VOUT1 = 0.8 V, PWM Mode Rev. D | Page 8 of 28 Document Outline Features Applications General Description Typical Application Circuit 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 Thermal Protection Undervoltage Lockout Enable/Shutdown BUCK1 and BUCK2 Control Scheme PWM Mode Power Save Mode (PSM) PSM Current Threshold Oscillator/Phasing of Inductor Switching Short-Circuit Protection Soft Start Current Limit 100% Duty Operation Active Pull-Downs LDO1 and LDO2 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 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