Datasheet ADP1740, ADP1741 (Analog Devices) - 8

ADP1740/ADP1741 Data Sheet 100 4500 1.9V LOAD = 10mA 90 2.0V 4000 LOAD = 100mA 2.4V LOAD = 400mA 80 2.6V LOAD = 800mA 3500 A) 3.0V LOAD = 1.2A µ A) ( 70 3.6V µ LOAD = 2A ( 3000 NT 60 NT 2500 50 N CURRE 2000 W 40 DO UND CURRE 1500 30 RO HUT G S 1000 20 10 500 0 0 –40 –15 10 35 60 85
011
2.3 2.4 2.5 2.6 2.7 2.8
014
TEMPERATURE (°C) INPUT VOLTAGE (V)
07081- 07081- Figure 11. Shutdown Current vs. Temperature at Various Input Voltages Figure 14. Ground Current vs. Input Voltage (in Dropout), VOUT = 2.5 V
0.25 T ILOAD 0.20 ) V ( GE 0.15 1 1mA TO 2A LOAD STEP, 2.5A/µs, 1A/DIV OLTA 1.6V T V 0.10 V OU OUT 2 OP R D 2.5V 0.05 50mV/DIV VIN = 3.6V VOUT = 1.5V 0 1 10 100 1k 10k
012
CH1 1.0 A Ω B
015
W CH2 50mV BW M10µs A CH1 380mA LOAD CURRENT (mA) T 10.40%
07081- 07081- Figure 12. Dropout Voltage vs. Load Current, VOUT = 1.6 V, 2.5 V Figure 15. Load Transient Response, CIN = 4.7 µF, COUT = 4.7 µF
2.50 T I 2.45 LOAD 2.40 ) V ( 2.35 GE 1 1mA TO 2A LOAD STEP, 2.5A/µs, 1A/DIV OLTA 2.30 T V U V 2.25 OUT TP 2 LOAD = 10mA OU 2.20 LOAD = 100mA LOAD = 400mA 50mV/DIV LOAD = 800mA 2.15 LOAD = 1.2A VIN = 3.6V LOAD = 2A VOUT = 1.5V 2.10 2.3 2.4 2.5 2.6 2.7 2.8
013
CH1 1.0 A Ω B
016
W CH2 50mV BW M10µs A CH1 880mA INPUT VOLTAGE (V)
07081-
T 10.20%
07081- Figure 13. Output Voltage vs. Input Voltage (in Dropout), VOUT = 2.5 V Figure 16. Load Transient Response, CIN = 22 µF, COUT = 22 µF Rev. H | Page 8 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 ADJUSTABLE OUTPUT VOLTAGE (ADP1741) 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