Datasheet ADP1611 (Analog Devices) - 3
| 制造商 | Analog Devices |
| 描述 | 20 V,1.2 MHz Step-Up DC-to-DC Switching Converter |
| 页数 / 页 | 20 / 3 — ADP1611. SPECIFICATIONS. Table 1. Parameter. Symbol. Conditions. Min. … |
| 文件格式/大小 | PDF / 763 Kb |
| 文件语言 | 英语 |
ADP1611. SPECIFICATIONS. Table 1. Parameter. Symbol. Conditions. Min. Typ. Max. Unit
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ADP1611 SPECIFICATIONS
VIN = 3.3 V, TA = −40°C to +85°C, unless otherwise noted. All limits at temperature extremes are guaranteed by correlation and characterization using standard statistical quality control (SQC), unless otherwise noted.
Table 1. Parameter Symbol Conditions Min Typ Max Unit
SUPPLY Input Voltage VIN 2.5 5.5 V Quiescent Current Nonswitching State IQ VFB = 1.3 V, RT = VIN 390 600 µA Shutdown I V = 0 V 0.01 10 µA QSD SD Switching State1 IQSW fSW = 1.23 MHz, no load 1 2 mA OUTPUT Output Voltage VOUT VIN 20 V Load Regulation ILOAD = 10 mA to 150 mA, VOUT = 10 V 0.05 mV/mA Overall Regulation Line, load, temperature ±3 % REFERENCE Feedback Voltage VFB 1.212 1.230 1.248 V Line Regulation VIN = 2.5 V to 5.5 V −0.15 +0.15 %/V ERROR AMPLIFIER Transconductance gm ∆I = 1 µA 100 µA/V Voltage Gain AV 60 dB FB Input Bias Current VFB = 1.23 V 10 nA SWITCH SW On Resistance RON ISW = 1.0 A 230 600 mΩ SW Leakage Current VSW = 20 V 0.01 20 µA Peak Current Limit2 ICLSET 2.0 A OSCILLATOR Oscillator Frequency fOSC RT = GND 0.49 0.7 0.885 MHz RT = IN 0.89 1.23 1.6 MHz Maximum Duty Cycle DMAX COMP = open, VFB = 1 V, RT = GND 78 83 90 % SHUTDOWN Shutdown Input Voltage Low VIL 0.6 V Shutdown Input Voltage High VIH 2.2 V Shutdown Input Bias Current I V = 3.3 V 0.01 1 µA SD SD SOFT START SS Charging Current VSS = 0 V 3 µA UNDERVOLTAGE LOCKOUT3 UVLO Threshold VIN rising 2.2 2.4 2.5 V UVLO Hysteresis 220 mV 1 This parameter specifies the average current while switching internally and with SW (Pin 5) floating. 2 Guaranteed by design and not fully production tested. 3 Guaranteed by characterization. Rev. 0 | Page 3 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
ADP1611 SPECIFICATIONS
VIN = 3.3 V, TA = −40°C to +85°C, unless otherwise noted. All limits at temperature extremes are guaranteed by correlation and characterization using standard statistical quality control (SQC), unless otherwise noted.
Table 1. Parameter Symbol Conditions Min Typ Max Unit
SUPPLY Input Voltage VIN 2.5 5.5 V Quiescent Current Nonswitching State IQ VFB = 1.3 V, RT = VIN 390 600 µA Shutdown I V = 0 V 0.01 10 µA QSD SD Switching State1 IQSW fSW = 1.23 MHz, no load 1 2 mA OUTPUT Output Voltage VOUT VIN 20 V Load Regulation ILOAD = 10 mA to 150 mA, VOUT = 10 V 0.05 mV/mA Overall Regulation Line, load, temperature ±3 % REFERENCE Feedback Voltage VFB 1.212 1.230 1.248 V Line Regulation VIN = 2.5 V to 5.5 V −0.15 +0.15 %/V ERROR AMPLIFIER Transconductance gm ∆I = 1 µA 100 µA/V Voltage Gain AV 60 dB FB Input Bias Current VFB = 1.23 V 10 nA SWITCH SW On Resistance RON ISW = 1.0 A 230 600 mΩ SW Leakage Current VSW = 20 V 0.01 20 µA Peak Current Limit2 ICLSET 2.0 A OSCILLATOR Oscillator Frequency fOSC RT = GND 0.49 0.7 0.885 MHz RT = IN 0.89 1.23 1.6 MHz Maximum Duty Cycle DMAX COMP = open, VFB = 1 V, RT = GND 78 83 90 % SHUTDOWN Shutdown Input Voltage Low VIL 0.6 V Shutdown Input Voltage High VIH 2.2 V Shutdown Input Bias Current I V = 3.3 V 0.01 1 µA SD SD SOFT START SS Charging Current VSS = 0 V 3 µA UNDERVOLTAGE LOCKOUT3 UVLO Threshold VIN rising 2.2 2.4 2.5 V UVLO Hysteresis 220 mV 1 This parameter specifies the average current while switching internally and with SW (Pin 5) floating. 2 Guaranteed by design and not fully production tested. 3 Guaranteed by characterization. Rev. 0 | Page 3 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