Texas Instruments AN-1870 LM26420 User Manual Download Page 8 | Manualshive

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Texas Instruments AN-1870 LM26420 User Manual Download Page 8

WQFN-16 PCB Layout

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WQFN-16 PCB Layout

WQFN - Top Layer

WQFN - Layer 2

WQFN - Layer 3

WQFN - Bottom Layer

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AN-1870 LM26420 Evaluation Board

SNVA353B – February 2009 – Revised April 2013

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Copyright © 2009–2013, Texas Instruments Incorporated

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Summary of Contents for AN-1870 LM26420

Page 1: ...inimum load current 0A Size 1 35 in 1 6 in Peak Current Limit 3 2A at 25 C Nominal Switching Frequency 550 kHz or 2 2MHz 2 Powering Up the Board Since the EN pins are directly tied to the input voltag...

Page 2: ...ti com 3 Typical Application Circuit Figure 1 LM26420 Demo Board Schematic 2 AN 1870 LM26420 Evaluation Board SNVA353B February 2009 Revised April 2013 Submit Documentation Feedback Copyright 2009 201...

Page 3: ...rnal supply open collector output 5 FB1 Feedback pin for Buck 1 Connect to external resistor divider to set output voltage 8 FB2 Feedback pin for Buck 2 Connect to external resistor divider to set out...

Page 4: ...pply open drain output 8 FB1 Feedback pin for Buck 1 Connect to external resistor divider to set output voltage 13 FB2 Feedback pin for Buck 2 Connect to external resistor divider to set output voltag...

Page 5: ...6035K10F 1 5 R2 21 3k 1 603 Vishay CRCW060321K3F 1 6 R7 R8 49 9k 1 603 Vishay CRCW060349K9F 2 R3 R4 R5 7 10k 1 603 Vishay CRCW060310K0F 4 R6 8 R9 5 1 Ohm 1 805 Vishay CRCW06035R10F 1 9 J1 J2 Jumper fo...

Page 6: ...RCW06035K10F 1 5 R2 21 3k 1 603 Vishay CRCW060321K3F 1 6 R7 R8 49 9k 1 603 Vishay CRCW060349K9F 2 R3 R4 R5 7 10k 1 603 Vishay CRCW060310K0F 4 R6 8 R9 5 1 Ohm 1 805 Vishay CRCW06035R10F 1 9 J1 J2 Jumpe...

Page 7: ...20 PCB Layout HTSSOP Top Layer HTSSOP Layer 2 HTSSOP Layer 3 HTSSOP Bottom Layer 7 SNVA353B February 2009 Revised April 2013 AN 1870 LM26420 Evaluation Board Submit Documentation Feedback Copyright 2...

Page 8: ...FN 16 PCB Layout WQFN Top Layer WQFN Layer 2 WQFN Layer 3 WQFN Bottom Layer 8 AN 1870 LM26420 Evaluation Board SNVA353B February 2009 Revised April 2013 Submit Documentation Feedback Copyright 2009 20...

Page 9: ...rsion Efficiency 2 5VOUT X Version Efficiency 1 2VOUT Y Version Efficiency 2 5VOUT Y Version Load Step Response X Version Load Step Response Y Version 9 SNVA353B February 2009 Revised April 2013 AN 18...

Page 10: ...cs www ti com Steady State Operation Y Version Enable Start up VIN Applied 10 AN 1870 LM26420 Evaluation Board SNVA353B February 2009 Revised April 2013 Submit Documentation Feedback Copyright 2009 20...

Page 11: ...sponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related inf...

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