Datasheet ADP1872, ADP1873 (Analog Devices) - 9

Data Sheet ADP1872/ADP1873 1.801 1.810 1.800 1.809 1.799 1.808 1.798 1.807 ) ) V V ( 1.806 1.797 ( E E G G 1.805 A 1.796 A LT LT 1.804 O 1.795 O V V 1.803 T 1.794 T U U 1.802 TP 1.793 TP 1.801 OU OU 1.792 1.800 1.791 VIN = 5.5V VIN = 13V VIN = 16.5V V V V 1.799 IN = 5.5V IN = 13V IN = 16.5V +125°C +125°C +125°C +125°C +125°C +125°C 1.790 +25°C +25°C +25°C 1.798 +25°C +25°C +25°C –40°C –40°C –40°C –40°C –40°C –40°C 1.789 1.797 0 1500 3000 4500 6000 7500 9000 10,500 12,000 13,500 15,000
16 19 0
0 1500 3000 4500 6000 7500 9000 10,500 12,000 13,500 15,000
0 7- 7-
LOAD CURRENT (mA)
29
LOAD CURRENT (mA)
29 08 08 Figure 16. Output Voltage Accuracy—600 kHz, VOUT = 1.8 V Figure 19. Output Voltage Accuracy—1.0 MHz, VOUT = 1.8 V
5.044 4.050 4.045 5.042 4.040 5.040 4.035 5.038 4.030 ) ) V V ( 4.025 5.036 ( E E G 4.020 G A 5.034 A 4.015 LT LT O 5.032 O 4.010 V V T T 4.005 5.030 U U 4.000 TP 5.028 TP 3.995 OU OU 5.026 3.990 3.985 5.024 VIN = 13V VIN = 16.5V +125°C V 3.980 +125°C +125°C DD = 5.5V, VIN = 13V 5.022 +25°C +25°C +25°C VDD = 5.5V, VIN = 16.5V 3.975 –40°C –40°C –40°C 5.020 3.970 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10,000
17 20 0
0 800 1600 2400 3200 4000 4800 5600 6400 7200 8000
0 7- 7-
LOAD CURRENT (mA)
29
LOAD CURRENT (mA)
29 08 08 Figure 17. Output Voltage Accuracy—600 kHz, VOUT = 5 V Figure 20. Output Voltage Accuracy—1.0 MHz, VOUT = 4 V
0.807 0.6030 VIN = 5.5V +125°C 0.6025 0.806 +25°C –40°C 0.6020 0.805 ) ) V 0.6015 V ( ( 0.804 E E 0.6010 G AG A T 0.803 L LT 0.6005 O O V 0.802 K V 0.6000 T U TP 0.5995 0.801 DBAC E OU E 0.5990 F 0.800 V 0.5985 IN = 13V VIN = 16.5V VDD = 2.7V, VIN = 2.7V, 3.6V 0.799 +125°C +125°C V +25°C +25°C 0.5980 DD = 3.6V, VIN = 3.6V TO 16.5V –40°C –40°C VDD = 5.5V, VIN = 5.5V, 13V, 16.5V 0.798 0.5975 0 2000 4000 6000 8000 10,000 12,000 14,000 16,000
18 21 0
–40.0 –7.5 25.0 57.5 90.0 122.5
0 7- 7-
LOAD CURRENT (mA)
29
TEMPERATURE (°C)
29 08 08 Figure 18. Output Voltage Accuracy—1 MHz, VOUT = 0.8 V Figure 21. Feedback Voltage vs. Temperature Rev. B | Page 9 of 40 Document Outline Features Applications Typical Applications Circuit General Description Revision History Specifications Absolute Maximum Ratings Thermal Resistance Boundary Condition ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics ADP1872/ADP1873 Block Digram Theory of Operation Startup Soft Start Precision Enable Circuitry Undervoltage Lockout Thermal Shutdown Programming Resistor (RES) Detect Circuit Valley Current-Limit Setting Hiccup Mode During Short Circuit Synchronous Rectifier Power Saving Mode (PSM) Version (ADP1873) Timer Operation Pseudo-Fixed Frequency Applications Information Feedback Resistor Divider Inductor Selection Output Ripple Voltage (ΔVRR) Output Capacitor Selection Compensation Network Output Filter Impedance (ZFILT) Error Amplifier Output Impedance (ZCOMP) Error Amplifier Gain (GM) Current-Sense Loop Gain (GCS) Crossover Frequency Efficiency Consideration Channel Conduction Loss MOSFET Driver Loss MOSFET Switching Loss Body Diode Conduction Loss Inductor Loss Input Capacitor Selection Thermal Considerations Design Example Input Capacitor Inductor Current Limit Programming Output Capacitor Feedback Resistor Network Setup Compensation Network Loss Calculations External Component Recommendations Layout Considerations IC Section (Left Side of Evaluation Board) Power Section Differential Sensing Typical Application Circuits Dual-Input, 300 kHz High Current Application Circuit Single-Input, 600 kHz Application Circuit Dual-Input, 300 kHz High Current Application Circuit Outline Dimensions Ordering Guide