Datasheet LTM4691 (Analog Devices) - 6
| Fabricante | Analog Devices |
| Descripción | Low VIN, High Efficiency, Dual 2A Step-Down DC/DC µModule Regulator |
| Páginas / Página | 22 / 6 — TYPICAL PERFORMANCE CHARACTERISTICS. Transient Response, Pulse-. … |
| Formato / tamaño de archivo | PDF / 1.2 Mb |
| Idioma del documento | Inglés |
TYPICAL PERFORMANCE CHARACTERISTICS. Transient Response, Pulse-. Transient Response, Forced. Transient Response, Burst Mode
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LTM4691
TYPICAL PERFORMANCE CHARACTERISTICS Transient Response, Pulse- Transient Response, Forced Transient Response, Burst Mode Skipping Mode Continuous Mode Operation
V V OUT OUT 100mV/DIV 100mV/DIV V AC-COUPLED OUT AC-COUPLED 100mV/DIV AC-COUPLED LOAD STEP LOAD STEP CURRENT LOAD STEP CURRENT 1A/DIV CURRENT 1A/DIV 1A/DIV 4691 G08 20µs/DIV 4691 G07 20µs/DIV 20µs/DIV 4691 G09 LOAD STEP: 0.1A TO 1.5A LOAD STEP: 0.1A TO 1.5A LOAD STEP: 0.1A TO 1.5A VIN = 3.3V VIN = 3.3V VIN = 3.3V VOUT = 1.2V VOUT = 1.2V VOUT = 1.2V
Start-Up Transient, No Load Start-Up Transient, Full Load Start-Up with Prebiased Output
VOUT RUN 1V/DIV V 5V/DIV OUT 1V/DIV PGOOD 5V/DIV RUN RUN 2V/DIV 2V/DIV VOUT 1V/DIV IIN IIN 200mA/DIV IIN 200mA/DIV 100mA/DIV 1ms/DIV 4691 G10 1ms/DIV 4691 G11 500μs/DIV 4691 G12 VIN = 3.3V VIN = 3.3V VIN = 3.3V VOUT = 1.2V VOUT = 1.2V VOUT = 1.2V RLOAD = 0.6Ω
Short-Circuit, No Load Short-Circuit, Full Load
VOUT VOUT 1V/DIV 1V/DIV IIN IIN 1A/DIV 200mA/DIV 4691 G14 50μs/DIV 4691 G13 50µs/DIV VIN = 3.3V VIN = 3.3V VOUT = 1.2V VOUT = 1.2V Rev. 0 6 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information VIN to VOUT Step-Down Ratios Output Voltage Programming Input Decoupling Capacitors Output Decoupling Capacitors Mode Selection Operating Frequency and External Synchronization Power GOOD Output Overvoltage Protection Output Voltage Soft-Start Dropout Operation Output Short-Circuit Protection and Recovery Load Sharing Using the Precision RUN Threshold Thermal Considerations and Output Current Derating Safety Considerations Layout Checklist/Example Applications Information Typical Applications Pin Configuration Table LTM4691 Component LGA Pinout Package Description Package Photo Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS Transient Response, Pulse- Transient Response, Forced Transient Response, Burst Mode Skipping Mode Continuous Mode Operation
V V OUT OUT 100mV/DIV 100mV/DIV V AC-COUPLED OUT AC-COUPLED 100mV/DIV AC-COUPLED LOAD STEP LOAD STEP CURRENT LOAD STEP CURRENT 1A/DIV CURRENT 1A/DIV 1A/DIV 4691 G08 20µs/DIV 4691 G07 20µs/DIV 20µs/DIV 4691 G09 LOAD STEP: 0.1A TO 1.5A LOAD STEP: 0.1A TO 1.5A LOAD STEP: 0.1A TO 1.5A VIN = 3.3V VIN = 3.3V VIN = 3.3V VOUT = 1.2V VOUT = 1.2V VOUT = 1.2V
Start-Up Transient, No Load Start-Up Transient, Full Load Start-Up with Prebiased Output
VOUT RUN 1V/DIV V 5V/DIV OUT 1V/DIV PGOOD 5V/DIV RUN RUN 2V/DIV 2V/DIV VOUT 1V/DIV IIN IIN 200mA/DIV IIN 200mA/DIV 100mA/DIV 1ms/DIV 4691 G10 1ms/DIV 4691 G11 500μs/DIV 4691 G12 VIN = 3.3V VIN = 3.3V VIN = 3.3V VOUT = 1.2V VOUT = 1.2V VOUT = 1.2V RLOAD = 0.6Ω
Short-Circuit, No Load Short-Circuit, Full Load
VOUT VOUT 1V/DIV 1V/DIV IIN IIN 1A/DIV 200mA/DIV 4691 G14 50μs/DIV 4691 G13 50µs/DIV VIN = 3.3V VIN = 3.3V VOUT = 1.2V VOUT = 1.2V Rev. 0 6 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information VIN to VOUT Step-Down Ratios Output Voltage Programming Input Decoupling Capacitors Output Decoupling Capacitors Mode Selection Operating Frequency and External Synchronization Power GOOD Output Overvoltage Protection Output Voltage Soft-Start Dropout Operation Output Short-Circuit Protection and Recovery Load Sharing Using the Precision RUN Threshold Thermal Considerations and Output Current Derating Safety Considerations Layout Checklist/Example Applications Information Typical Applications Pin Configuration Table LTM4691 Component LGA Pinout Package Description Package Photo Related Parts