Datasheet LTM8026 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | 36VIN, 5A CVCC Step-Down µModule Regulator |
| Páginas / Página | 28 / 1 — FEATURES. DESCRIPTION. Complete Step-Down Switch Mode Power Supply. … |
| Formato / tamaño de archivo | PDF / 432 Kb |
| Idioma del documento | Inglés |
FEATURES. DESCRIPTION. Complete Step-Down Switch Mode Power Supply. Constant-Voltage Constant-Current Operation
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LTM8026 36VIN, 5A CVCC Step-Down µModule Regulator
FEATURES DESCRIPTION
n
Complete Step-Down Switch Mode Power Supply
The LTM®8026 is a 36VIN, 5A constant-voltage, constant- n
Constant-Voltage Constant-Current Operation
current (CVCC) step-down µModule® regulator. Included in n
Selectable Output Current Up to 5A
the package are the switching controller, power switches, n
Parallelable for Increased Output Current, Even
inductor and support components. Operating over an
from Different Voltage Sources
input voltage range of 6V to 36V, the LTM8026 supports n
Wide Input Voltage Range: 6V to 36V
an output voltage range of 1.2V to 24V. CVCC operation n
1.2V to 24V Output Voltage
allows the LTM8026 to accurately regulate its output n Selectable Switching Frequency: 100kHz to 1MHz current up to 5A over the entire output range. The output n SnPb or RoHS Compliant Finish current can be set by a control voltage, a single resistor or n Programmable Soft-Start a thermistor. Only resistors to set the output voltage and n (11.25mm × 15mm × 2.82mm) LGA and (11.25mm frequency and the bulk input and output filter capacitors × 15mm × 3.42mm BGA Packages are needed to finish the design. The LTM8026 is packaged in a thermally-enhanced,
APPLICATIONS
compact (11.25mm × 15mm) overmolded land grid ar- ray (LGA) and ball grid array (BGA) packages suitable for n SuperCap Charging automated assembly by standard surface mount equip- n General Purpose Industrial ment. The LTM8026 is available in SnPb (BGA) or RoHS n Extreme Short-Circuit Protection or Accurate Output compliant terminal finish. Current Limit L, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are registered trademarks of n µController-Based Battery Charging Analog Devices Inc. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 7199560, 7321203 and others pending. n High Power LED Drive n Multiple Input, Single Output Voltage Conversion
TYPICAL APPLICATION Typical Application VOUT vs IOUT, 12VIN
3.0 LTM8026 V VOUT IN VIN 6V TO 36V VOUT 2.5V 510k 10µF 5A 2.5 RUN SS VREF + 2.0 SYNC CTL_I 100µF 330µF COMP CTL_T 1.5 RT GND ADJ 1.0 90.9k 9.09k OUTPUT VOLTAGE (V) 0.5 8026 TA01a 0 0 1 2 3 4 5 6 OUTPUT CURRENT (A) 8026 TA01b 8026fd For more information www.linear.com/LTM8026 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Package Photo Package Description Revision History Typical Application Design Resources Related Parts
FEATURES DESCRIPTION
n
Complete Step-Down Switch Mode Power Supply
The LTM®8026 is a 36VIN, 5A constant-voltage, constant- n
Constant-Voltage Constant-Current Operation
current (CVCC) step-down µModule® regulator. Included in n
Selectable Output Current Up to 5A
the package are the switching controller, power switches, n
Parallelable for Increased Output Current, Even
inductor and support components. Operating over an
from Different Voltage Sources
input voltage range of 6V to 36V, the LTM8026 supports n
Wide Input Voltage Range: 6V to 36V
an output voltage range of 1.2V to 24V. CVCC operation n
1.2V to 24V Output Voltage
allows the LTM8026 to accurately regulate its output n Selectable Switching Frequency: 100kHz to 1MHz current up to 5A over the entire output range. The output n SnPb or RoHS Compliant Finish current can be set by a control voltage, a single resistor or n Programmable Soft-Start a thermistor. Only resistors to set the output voltage and n (11.25mm × 15mm × 2.82mm) LGA and (11.25mm frequency and the bulk input and output filter capacitors × 15mm × 3.42mm BGA Packages are needed to finish the design. The LTM8026 is packaged in a thermally-enhanced,
APPLICATIONS
compact (11.25mm × 15mm) overmolded land grid ar- ray (LGA) and ball grid array (BGA) packages suitable for n SuperCap Charging automated assembly by standard surface mount equip- n General Purpose Industrial ment. The LTM8026 is available in SnPb (BGA) or RoHS n Extreme Short-Circuit Protection or Accurate Output compliant terminal finish. Current Limit L, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are registered trademarks of n µController-Based Battery Charging Analog Devices Inc. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 7199560, 7321203 and others pending. n High Power LED Drive n Multiple Input, Single Output Voltage Conversion
TYPICAL APPLICATION Typical Application VOUT vs IOUT, 12VIN
3.0 LTM8026 V VOUT IN VIN 6V TO 36V VOUT 2.5V 510k 10µF 5A 2.5 RUN SS VREF + 2.0 SYNC CTL_I 100µF 330µF COMP CTL_T 1.5 RT GND ADJ 1.0 90.9k 9.09k OUTPUT VOLTAGE (V) 0.5 8026 TA01a 0 0 1 2 3 4 5 6 OUTPUT CURRENT (A) 8026 TA01b 8026fd For more information www.linear.com/LTM8026 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Package Photo Package Description Revision History Typical Application Design Resources Related Parts