PDF《36VIN, 5A CVCC Step-Down》

1 For more information www.

linear.com/LTM8026 TYPICAL APPLICATION FEATURES DESCRIPTION 36VIN, 5A CVCC Step-Down ?Module Regulator The LTM?

8026 is a 36VIN, 5A constant-voltage, constant- current(CVCC)step-down?Module? regulator.Includedin the package are the switching controller, power switches, inductor and support components. Operating over an input voltage range of 6V to 36V, the LTM8026 supports an output voltage range of 1.2V to 24V. CVCC operation allows the LTM8026 to accurately regulate its output current up to 5A over the entire output range. The output current can be set by a control voltage, a single resistor or a thermistor. Only resistors to set the output voltage and frequency and the bulk input and output filter capacitors are needed to finish the design. The LTM8026 is packaged in a thermally-enhanced, compact (11.25mm * 15mm) overmolded land grid ar- ray (LGA) and ball grid array (BGA) packages suitable for automated assembly by standard surface mount equip- ment. The LTM8026 is available in SnPb (BGA) or RoHS compliant terminal finish. Typical Application APPLICATIONS n Complete Step-Down Switch Mode Power Supply n Constant-Voltage Constant-Current Operation n Selectable Output Current Up to 5A n Parallelable for Increased Output Current, Even from Different Voltage Sources n Wide Input Voltage Range: 6V to 36V n 1.2V to 24V Output Voltage n Selectable Switching Frequency: 100kHz to 1MHz n SnPb or RoHS Compliant Finish n Programmable Soft-Start n (11.25mm * 15mm * 2.82mm) LGA and (11.25mm * 15mm * 3.42mm BGA Packages n SuperCap Charging n General Purpose Industrial n Extreme Short-Circuit Protection or Accurate Output Current Limit n ?Controller-Based Battery Charging n High Power LED Drive n Multiple Input, Single Output Voltage Conversion L, LT, LTC, LTM, ?Module, Linear Technology and the Linear logo are registered trademarks of Analog Devices Inc. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 7199560,

7321203 and others pending. VIN RUN 510k SS LTM8026 SYNC 330?F 100?F

8026 TA01a 10?F VIN 6V TO 36V VOUT 2.5V 5A COMP VOUT VREF CTL_I CTL_T RT GND 90.9k 9.09k ADJ + VOUT vs IOUT, 12VIN OUTPUT CURRENT (A)

0 0 OUTPUT VOLTAGE (V) 0.5 1.0 1.5 2.0 2.5 3.0

1 2

3 6

4 5

8026 TA01b

2 For more information www.linear.com/LTM8026 PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS VIN.40V ADJ, RT, COMP, CTL_I, CTL_T, VREF.3V VOUT.25V RUN, SYNC, SS.6V (Note 1) BANK

3 SYNC RUN CLT_T CLT_I V REF RT COMP SS ADJ BANK

1 A B C D E F LGA PACKAGE 81-LEAD (15mm * 11.25mm * 2.82mm) G H J K L BANK

2 GND TOP VIEW VOUT

8 7

6 5

4 3

2 1 VIN TJMAX = 125°C, θJA = 18.6°C/W, θJC(bottom) = 5.4°C/W, θJB = 5.6°C/W, θJC(top) = 10.8°C/W WEIGHT = 1.4g, θ VALUES DERIVED FROM A 4-LAYER 7.62cm * 7.62cm BANK

3 SYNC RUN CLT_T CLT_I V REF RT COMP SS ADJ BANK

1 A B C D E F BGA PACKAGE 81-LEAD (15mm * 11.25mm * 3.42mm) G H J K L BANK

2 GND TOP VIEW VOUT

8 7

6 5

4 3

2 1 VIN TJMAX = 125°C, θJA = 18.6°C/W, θJC(bottom) = 5.4°C/W, θJB = 5.6°C/W, θJC(top) = 10.8°C/W WEIGHT = 1.4g, θ VALUES DERIVED FROM A 4-LAYER 7.62cm * 7.62cm Current Into RUN Pin.100?A Internal Operating Temperature Range... C40°C to 125°C Peak Solder Reflow Body Temperature.245°C Storage Temperature.55°C to 125°C PART NUMBER PAD OR BALL FINISH PART MARKING* PACKAGE TYPE MSL RATING TEMPERATURE RANGE (Note 2) DEVICE FINISH CODE LTM8026EV#PBF Au (RoHS) LTM8026V e4 LGA

3 C40°C to 125°C LTM8026IV#PBF Au (RoHS) LTM8026V e4 LGA

3 C40°C to 125°C LTM8026MPV#PBF Au (RoHS) LTM8026V e4 LGA