Datasheet ADP2360 (Analog Devices) - 7

Data Sheet ADP2360 TYPICAL PERFORMANCE CHARACTERISTICS 100 100 90 90 80 80 70 70 (%) 60 (%) 60 ENCY 50 ENCY 50 40 40 EFFICI EFFICI 30 30 20 V 20 IN = 9V +125°C VIN = 12V +85°C 10 VIN = 24V 10 +25°C VIN = 48V –40°C 0 0 0 0.01 0.02 0.03 0.04 0.05 0.06 0.07
003
0 0.01 0.02 0.03 0.04 0.05 0.06 0.07
006
LOAD (A)
13944-
LOAD (A)
13944- Figure 3. Efficiency vs. Load, VOUT = 3.3 V Fixed, RITH = 0 Ω, TA = 25°C Figure 6. Efficiency vs. Load over Temperature, VIN = 9 V, VOUT = 3.3 V Fixed, RITH = 0 Ω
100 100 90 90 80 80 70 70 (%) 60 (%) 60 ENCY 50 ENCY 50 40 40 EFFICI EFFICI 30 30 20 V 20 IN = 9V VIN = 12V 47µH 220µH 10 VIN = 24V 10 100µH 330µH VIN = 48V 150µH 470µH 0 0 0 0.01 0.02 0.03 0.04 0.05 0.06
004
0 0.01 0.02 0.03 0.04 0.05 0.06 0.07
007
LOAD (A)
13944-
LOAD (A)
13944- Figure 4. Efficiency vs. Load, VOUT = 5 V Fixed, RITH = 0 Ω, TA = 25°C Figure 7. Efficiency vs. Load over Inductor Size, VIN = 9 V, VOUT = 3.3 V Fixed, RITH = 0 Ω, TA = 25°C
100 T VFB 90 3 80 70 VSW (%) 60 4 ENCY 50 40 EFFICI 30 ISW 1 20 VIN = 9V VOUT VIN = 12V 10 VIN = 24V 2 VIN = 48V 0 0 0.005 0.010 0.015 0.020 0.025 0.030 0.035 0.040
005
CH1 100mA Ω BW CH2 50.0mV B M 200µs 25.0MS/s
008
CH3 50mV W B CH4 5.0V A CH1 40.0mA LOAD (A) W BW
13944-
40.0ns/pt
13944- Figure 5. Efficiency vs. Load, VOUT = 3.3 V Fixed, RITH = Open, TA = 25°C Figure 8. Switching Waveforms, VIN = 9 V, VOUT = 3.3 V Fixed, RITH = 0 Ω, Load = 1 mA Rev. A | Page 7 of 15 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION OVERVIEW CONTROL SCHEME 100% Duty Cycle Adjustable Peak Current Threshold (ITH) DEVICE FEATURES Fixed and Adjustable Output Models Shutdown/Precision Enable Soft Start Thermal Shutdown (TSD) Undervoltage Lockout (UVLO) Power Good APPLICATIONS INFORMATION SETTING THE OUTPUT VOLTAGE INPUT CAPACITOR SELECTION ESTIMATING THE SWITCHING FREQUENCY SETTING THE PEAK INDUCTOR CURRENT INDUCTOR SELECTION OUTPUT CAPACITOR SELECTION DESIGN OPTIMIZATION RECOMMENDED COMPONENTS PCB LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE