Datasheet ADM7155 (Analog Devices) - 8

ADM7155 Data Sheet 10 10 9 9 8 8 ) 7 A) 7 (mA (µ T T N 6 N 6 E E RR 5 RR 5 CU CU 4 D N 4 UND U O O R 3 ILOAD = 1mA R 3 ILOAD = 5mA G I G LOAD = 10mA ILOAD = 10mA 2 I 2 LOAD = 100mA ILOAD = 100mA ILOAD = 200mA ILOAD = 200mA 1 I 1 LOAD = 400mA ILOAD = 400mA ILOAD = 600mA ILOAD = 600mA 0 0
1
3.5 4.0 4.5 5.0 5.5
1
3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8
-0 -014
VIN (V) VIN (V)
12325 12325 Figure 11. Ground Current vs. Input Voltage (VIN) at Various Loads, Figure 14. Ground Current vs. Input Voltage (VIN) in Dropout, VOUT = 3.3 V VOUT = 3.3 V
160 1.24 140 1.23 ) V 120 1.22 (m GE 100 1.21 LTA (V) O 80 T 1.20 T V OUV OU 60 1.19 OP R I D 40 LOAD = 1mA 1.18 ILOAD = 10mA ILOAD = 100mA 20 1.17 ILOAD = 200mA ILOAD = 400mA I 0 LOAD = 600mA 1.16 1 10 100 1000 –40 –5 25 85 125
15 0 -012
I
325-
LOAD (mA) JUNCTION TEMPERATURE (°C)
12325 12 Figure 12. Dropout Voltage vs. Load Current (ILOAD), VOUT = 3.3 V Figure 15. Output Voltage (VOUT) vs. Junction Temperature (TJ) at Various Loads, VOUT = 1.2 V
3.40 1.24 3.35 1.23 3.30 1.22 3.25 1.21 ) ) (V (V T 3.20 T 1.20 OU OU V V 3.15 1.19 ILOAD = 5mA 3.10 I 1.18 LOAD = 10mA ILOAD = 100mA 3.05 ILOAD = 200mA 1.17 ILOAD = 400mA ILOAD = 600mA 3.00 1.16 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8
013
1 10 100 1000
016 5- 5-
VIN (V) ILOAD (mA)
1232 1232 Figure 13. Output Voltage (VOUT) vs. Input Voltage (VIN) in Dropout, Figure 16. Output Voltage (VOUT) vs. Load Current (ILOAD), VOUT = 1.2 V VOUT = 3.3 V Rev. C | Page 8 of 24 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL DATA THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION APPLICATIONS INFORMATION ADIsimPOWER DESIGN TOOL CAPACITOR SELECTION Output Capacitor Input and VREG Capacitor REF Capacitor BYP Capacitor Capacitor Properties UNDERVOLTAGE LOCKOUT (UVLO) PROGRAMMABLE PRECISION ENABLE START-UP TIME REF, BYP, AND VREG PINS CURRENT-LIMIT AND THERMAL OVERLOAD PROTECTION THERMAL CONSIDERATIONS Thermal Characterization Parameter (ΨJB) PSRR PERFORMANCE PCB LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE