Datasheet ADP1754, ADP1755 (Analog Devices) - 9

Data Sheet ADP1754/ADP1755 0 T V 1.2A IN –10 800mA 400mA –20 100mA 10mA 3V TO 3.5V INPUT VOLTAGE STEP, 2V/µs –30 –40 B) d –50 R ( VOUT R S P –60 2 5mV/DIV –70 –80 VOUT = 1.5V –90 CIN = COUT = 4.7µF 1
7
–100 CH1 500mV B
01
W CH2 5mV BW M10µs A CH4 800mV
20 2-
10 100 1k 10k 100k 1M 10M
0
T 9.60%
72 2- 07
FREQUENCY (Hz)
72 07 Figure 17. Line Transient Response, Load Current = 1200 mA Figure 20. Power Supply Rejection Ratio vs. Frequency, VOUT = 0.75 V, VIN = 1.75 V
70 0 1.2A 2.5V –10 800mA 60 400mA –20 100mA 50 10mA –30 ) s m –40 40 1.5V B) d R ( –50 E (µV r R 30 IS S P O –60 N 20 0.75V –70 –80 10 –90 0 –100
21
0.0001 0.001 0.01 0.1 1 10
18 0
10 100 1k 10k 100k 1M 10M
1 2- 2-
LOAD CURRENT (A)
72
FREQUENCY (Hz)
72 07 07 Figure 18. Noise vs. Load Current and Output Voltage Figure 21. Power Supply Rejection Ratio vs. Frequency, VOUT = 1.5 V, VIN = 2.5 V
10 0 1.2A –10 ) 800mA z 400mA H –20 100mA 10mA –30 Y (µV/ 1 T SI N –40 B) E d D L –50 1.5V R ( A R R S T 2.5V P –60 EC 0.1 –70 E SP IS –80 O 0.75V N –90 0.01 –100 10 100 1k 10k 100k
19 22 0
10 100 1k 10k 100k 1M 10M
1 1- 2-
FREQUENCY (Hz)
08
FREQUENCY (Hz)
72 07 07 Figure 19. Noise Spectral Density vs. Output Voltage, ILOAD = 10 mA Figure 22. Power Supply Rejection Ratio vs. Frequency, VOUT = 2.5 V, VIN = 3.5 V Rev. G | Page 9 of 20 Document Outline Features Applications Typical Application Circuits General Description Table of Contents Revision History Specifications Input and Output Capacitor, Recommended Specifications Absolute Maximum Ratings Thermal Data Thermal Resistance ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Theory of Operation Soft Start Function (ADP1754/ADP1755) Adjustable Output Voltage (ADP1755) Enable Feature Power-Good Feature Reverse Current Protection Feature Applications Information Capacitor Selection Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties Undervoltage Lockout Current-Limit and Thermal Overload Protection Thermal Considerations PCB Layout Considerations Outline Dimensions Ordering Guide