Datasheet LTC4020 (Analog Devices) - 42
| Manufacturer | Analog Devices |
| Description | 55V Buck-Boost Multi-Chemistry Battery Charger |
| Pages / Page | 42 / 42 — Typical applicaTion |
| File Format / Size | PDF / 425 Kb |
| Document Language | English |
Typical applicaTion
Model Line for this Datasheet
Text Version of Document
LTC4020
Typical applicaTion Remote 24V to 55V (48V system) input to 12-cell Li-Ion (48V) PowerPath charger/system supply. 5A inductor current limit with 2.5A battery charge current limit. Minimum VIN is 24V as input regulation limits voltage loss due to line impedance. Battery termination voltage is 48V with maximum output voltage of 52.8V. Instant-on functionality limits minimum regulated output voltage to 40.8V.
VIN 24V TO 55V RSENSEA 1µF 0.01 VOUT Si7850DP + MBRS360 Si7850DP 56µF ×2 0.1µF IHLP-5050FD-5A 22µH Si7850DP Si7850DP 4.7µF + 56µF RSENSEB ×2 0.01 4.7µF SBR0560S1 PGND INTVCC SBR0560S1 PVIN BG2 BG1 SW2 SW1 TG2 TG1 BZX84C6V2L 1µF 1µF LTC4020 BST1 BST2 SGND SGND 33k 680pF SENSGND VC 0.033µF SENSBOT ITH 365k SENSTOP VFBMAX SENSVIN 1.5nF I 2nF R LIMIT T, 100k 191k RT CSOUT 20k 100Ω SHDN CSP RCS 10k 0.33µF 0.02Ω 100Ω CSN VIN_REG 12k MODE BGATE Si7465DP STAT1 BAT STAT2 VFBMIN 356k TIMER 20k FBG RNTC RNG_SS 10k VFB NTC SGNDBACK 12-CELL Li-ION (48V) 4020 TA05
relaTeD parTs PART NUMBER DESCRIPTION COMMENTS
LTC3789 High Efficiency, Synchronous, 4 Switch Buck-Boost Controller Improved LTC3780 with More Features LT3845 High Voltage Synchronous Current Mode Step-Down Controller For Medium/High Power, High Efficiency Supplies LT3650 High Voltage 2A Monolithic Li-Ion Battery Charger 3mm × 3mm DFN-12 and MSOP-12 Packages LT3651 High Voltage 4A Monolithic Li-Ion Battery Charger 4A Synchronous Version of LT3650 Family LT3652/LT3652HV Power Tracking 2A Battery Chargers Multi-Chemistry, Onboard Termination LTC4009 High Efficiency, Multi-Chemistry Battery Charger Low Cost Version of LTC4008, 4mm × 4mm QFN-20 LTC4012 High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control Similar to LTC4009 Adding PowerPath Control LT3741 High Power, Constant Current, Constant Voltage, Step-Down Controller Thermally Enhanced 4mm × 4mm QFN and 20-Pin TSSOP LT8705 80VIN/VOUT Sync Buck-Boost 4-SW Controller Single Inductor, TSSOP-38 and 5mm × 7mm QFN-38 4020fd 42 LT 0416 REV D • PRINTED IN USA Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95Fo 0 r3 m 5- o7re 4 in 17formation www.linear.com/LTC4020 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com/LTC4020 © LINEAR TECHNOLOGY CORPORATION 2013 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Electrical Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts
Typical applicaTion Remote 24V to 55V (48V system) input to 12-cell Li-Ion (48V) PowerPath charger/system supply. 5A inductor current limit with 2.5A battery charge current limit. Minimum VIN is 24V as input regulation limits voltage loss due to line impedance. Battery termination voltage is 48V with maximum output voltage of 52.8V. Instant-on functionality limits minimum regulated output voltage to 40.8V.
VIN 24V TO 55V RSENSEA 1µF 0.01 VOUT Si7850DP + MBRS360 Si7850DP 56µF ×2 0.1µF IHLP-5050FD-5A 22µH Si7850DP Si7850DP 4.7µF + 56µF RSENSEB ×2 0.01 4.7µF SBR0560S1 PGND INTVCC SBR0560S1 PVIN BG2 BG1 SW2 SW1 TG2 TG1 BZX84C6V2L 1µF 1µF LTC4020 BST1 BST2 SGND SGND 33k 680pF SENSGND VC 0.033µF SENSBOT ITH 365k SENSTOP VFBMAX SENSVIN 1.5nF I 2nF R LIMIT T, 100k 191k RT CSOUT 20k 100Ω SHDN CSP RCS 10k 0.33µF 0.02Ω 100Ω CSN VIN_REG 12k MODE BGATE Si7465DP STAT1 BAT STAT2 VFBMIN 356k TIMER 20k FBG RNTC RNG_SS 10k VFB NTC SGNDBACK 12-CELL Li-ION (48V) 4020 TA05
relaTeD parTs PART NUMBER DESCRIPTION COMMENTS
LTC3789 High Efficiency, Synchronous, 4 Switch Buck-Boost Controller Improved LTC3780 with More Features LT3845 High Voltage Synchronous Current Mode Step-Down Controller For Medium/High Power, High Efficiency Supplies LT3650 High Voltage 2A Monolithic Li-Ion Battery Charger 3mm × 3mm DFN-12 and MSOP-12 Packages LT3651 High Voltage 4A Monolithic Li-Ion Battery Charger 4A Synchronous Version of LT3650 Family LT3652/LT3652HV Power Tracking 2A Battery Chargers Multi-Chemistry, Onboard Termination LTC4009 High Efficiency, Multi-Chemistry Battery Charger Low Cost Version of LTC4008, 4mm × 4mm QFN-20 LTC4012 High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control Similar to LTC4009 Adding PowerPath Control LT3741 High Power, Constant Current, Constant Voltage, Step-Down Controller Thermally Enhanced 4mm × 4mm QFN and 20-Pin TSSOP LT8705 80VIN/VOUT Sync Buck-Boost 4-SW Controller Single Inductor, TSSOP-38 and 5mm × 7mm QFN-38 4020fd 42 LT 0416 REV D • PRINTED IN USA Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95Fo 0 r3 m 5- o7re 4 in 17formation www.linear.com/LTC4020 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com/LTC4020 © LINEAR TECHNOLOGY CORPORATION 2013 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Electrical Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts
