Datasheet LTC3526L-2, LTC3526LB-2 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | 550mA 2MHz Synchronous Step-Up DC/DC Converters in 2mm × 2mm DFN |
| 页数 / 页 | 16 / 5 — TA = 25°C, unless otherwise noted. Burst Mode Quiesent Current. VFB vs … |
| 文件格式/大小 | PDF / 346 Kb |
| 文件语言 | 英语 |
TA = 25°C, unless otherwise noted. Burst Mode Quiesent Current. VFB vs Temperature. Start-Up Voltage vs Temperature
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LTC3526L-2/LTC3526LB-2 Typical perForMance characTerisTics
TA = 25°C, unless otherwise noted. Burst Mode Quiesent Current VFB vs Temperature Start-Up Voltage vs Temperature vs VOUT (LTC3526L-2)
0.50 0.80 10.0 NORMALIZED TO 25°C 0.25 0.75 9.5 1mA LOAD 0 0.70 (%) 9.0 FB –0.25 (V) 0.65 (µA) 8.5 V IN NO LOAD I Q –0.50 0.60 CHANGE IN V 8.0 –0.75 0.55 7.5 –1.00 0.50 7.0 –60 –40 –20 0 20 40 60 80 100 –50 25 0 25 50 75 100 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 TEMPERATURE (°C) TEMPERATURE (°C) VOUT (V) 3526lb2 G13 3526lb2 G14 3526lb2 G15
Load Regulation Load Regulation Load Regulation
0.5 0.5 0.5 VOUT = 1.8V VOUT = 3.3V VOUT = 5V 0.4 0.4 0.4 0.3 0.3 0.3 0.2 0.2 0.2 (%) (%) (%) OUT 0.1 OUT 0.1 OUT 0.1 0 0 0 –0.1 –0.1 –0.1 CHANGE IN V –0.2 CHANGE IN V –0.2 CHANGE IN V –0.2 –0.3 VIN = 1.2V V –0.3 –0.3 IN = 0.9V VIN = 1.2V VIN = 2.4V –0.4 VIN = 1.2V –0.4 VIN = 1.8V –0.4 VIN = 3.6V VIN = 1.5V VIN = 2.4V VIN = 4.2V –0.5 –0.5 –0.5 0.01 0.1 1 10 100 1000 0.01 0.1 1 10 100 1000 0.01 0.1 1 10 100 1000 LOAD (mA) LOAD (mA) LOAD (mA) 3526lb2 G23 3526lb2 G24 3526lb2 G25
Fixed Frequency Switching Burst Mode Waveforms Waveform and VOUT Ripple (LTC3526L-2) VOUT and IIN During Soft-Start
VOUT SW PIN SW PIN 1V/DIV 2V/DIV 2V/DIV INPUT V CURRENT V OUT OUT 20mV/DIV 0.2A/DIV 20mV/DIV AC-COUPLED SHDN PIN AC-COUPLED 1V/DIV V 3526lb2 G16 3526lb2 G17 3526lb2 G18 IN = 1.2V 200ns/DIV VIN = 1.2V 20µs/DIV VOUT = 3.3V 200µs/DIV VOUT = 3.3V AT 100mA VOUT = 3.3V AT 5mA COUT = 4.7µF COUT = 4.7µF COUT = 10µF 3526lb2fa Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
TA = 25°C, unless otherwise noted. Burst Mode Quiesent Current VFB vs Temperature Start-Up Voltage vs Temperature vs VOUT (LTC3526L-2)
0.50 0.80 10.0 NORMALIZED TO 25°C 0.25 0.75 9.5 1mA LOAD 0 0.70 (%) 9.0 FB –0.25 (V) 0.65 (µA) 8.5 V IN NO LOAD I Q –0.50 0.60 CHANGE IN V 8.0 –0.75 0.55 7.5 –1.00 0.50 7.0 –60 –40 –20 0 20 40 60 80 100 –50 25 0 25 50 75 100 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 TEMPERATURE (°C) TEMPERATURE (°C) VOUT (V) 3526lb2 G13 3526lb2 G14 3526lb2 G15
Load Regulation Load Regulation Load Regulation
0.5 0.5 0.5 VOUT = 1.8V VOUT = 3.3V VOUT = 5V 0.4 0.4 0.4 0.3 0.3 0.3 0.2 0.2 0.2 (%) (%) (%) OUT 0.1 OUT 0.1 OUT 0.1 0 0 0 –0.1 –0.1 –0.1 CHANGE IN V –0.2 CHANGE IN V –0.2 CHANGE IN V –0.2 –0.3 VIN = 1.2V V –0.3 –0.3 IN = 0.9V VIN = 1.2V VIN = 2.4V –0.4 VIN = 1.2V –0.4 VIN = 1.8V –0.4 VIN = 3.6V VIN = 1.5V VIN = 2.4V VIN = 4.2V –0.5 –0.5 –0.5 0.01 0.1 1 10 100 1000 0.01 0.1 1 10 100 1000 0.01 0.1 1 10 100 1000 LOAD (mA) LOAD (mA) LOAD (mA) 3526lb2 G23 3526lb2 G24 3526lb2 G25
Fixed Frequency Switching Burst Mode Waveforms Waveform and VOUT Ripple (LTC3526L-2) VOUT and IIN During Soft-Start
VOUT SW PIN SW PIN 1V/DIV 2V/DIV 2V/DIV INPUT V CURRENT V OUT OUT 20mV/DIV 0.2A/DIV 20mV/DIV AC-COUPLED SHDN PIN AC-COUPLED 1V/DIV V 3526lb2 G16 3526lb2 G17 3526lb2 G18 IN = 1.2V 200ns/DIV VIN = 1.2V 20µs/DIV VOUT = 3.3V 200µs/DIV VOUT = 3.3V AT 100mA VOUT = 3.3V AT 5mA COUT = 4.7µF COUT = 4.7µF COUT = 10µF 3526lb2fa Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts