Datasheet ADP1611 (Analog Devices) - 7

ADP1611 1.4 0.50 F RT = V SW = 700kHz IN VFB = 1.3V 1.2 0.45 1.0 0.40 NT (mA) VIN = 5.5V 0.8 RT = GND 0.35 T CURRE 0.6 N V E IN = 3.3V C S 0.30 0.4 QUIE VIN = 2.5V OSCILLATORY FREQUENCY (MHz) 0.2 0.25 VOUT = 10V 0
04906-010
0.20
04906-013
2.5 3.0 3.5 4.0 4.5 5.0 5.5 –40 –15 10 35 60 85 SUPPLY VOLTAGE (V) AMBIENT TEMPERATURE (
°
C)
Figure 10. Oscillatory Frequency vs. Supply Voltage Figure 13. Quiescent Current vs. Ambient Temperature
350 0.60 FSW = 1.23kHz V V IN = 5.5V FB = 1.3V 0.55 ) 300
Ω
VIN = 3.3V (m 0.50 NT (mA) V 250 IN = 5.5V ANCE T IS S 0.45 VIN = 2.5V T CURRE 200 N E V C IN = 3.3V S ITCH RE 0.40 W S QUIE VIN = 2.5V 150 0.35 100
04906-011
0.30
04906-014
–40 –15 10 35 60 85 –40 –15 10 35 60 85 AMBIENT TEMPERATURE (
°
C) AMBIENT TEMPERATURE (
°
C)
Figure 11. Switch Resistance vs. Ambient Temperature Figure 14. Quiescent Current vs. Ambient Temperature
1.4 VIN = 3.3V FSW = 700kHz 1.3 VFB = 1V 1.242 1.2 1.1 VIN = 5.5V 1.232 NT (mA) 1.0 0.9 CURRE Y L 0.8 V P IN = 3.3V P 1.222 U 0.7 S REGULATION FB VOLTAGE (V) 0.6 VIN = 2.5V 0.5 1.212
04906-012
–40 –15 10 35 60 85 0.4
04906-015
–40 –15 10 35 60 85 AMBIENT TEMPERATURE (
°
C) AMBIENT TEMPERATURE (
°
C)
Figure 12. Regulation FB Voltage vs. Ambient Temperature Figure 15. Supply Current vs. Ambient Temperature Rev. 0 | Page 7 of 20 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CURRENT-MODE PWM OPERATION FREQUENCY SELECTION SOFT START ON/OFF CONTROL SETTING THE OUTPUT VOLTAGE INDUCTOR SELECTION CHOOSING THE INPUT AND OUTPUT CAPACITORS DIODE SELECTION LOOP COMPENSATION SOFT-START CAPACITOR APPLICATION CIRCUITS STEP-UP DC-TO-DC CONVERTER WITH TRUE SHUTDOWN TFT LCD BIAS SUPPLY SEPIC POWER SUPPLY LAYOUT PROCEDURE OUTLINE DIMENSIONS ORDERING GUIDE