Datasheet LTC4020 (Analog Devices) - 37

LTC4020
Typical applicaTions 5V to 30V to 6-cell lead-acid PowerPath charger/system supply. 6A inductor current limit with 2.5A battery charge current limit. Instant-on functionality incorporated for battery voltages below 12.25V, 14.4V absorption voltage, 13.3V float voltage,and 15.6V maximum output voltage (Instant-On and NTC fault only). Status pins light LEDs for visible charge-state monitoring.
VIN 5V TO 30V RSENSEA 1µF 0.008 CMSH3-40MA VOUT Si7272DP + 56µF Si7272DP 0.1µF ×2 15µH XAL1010-153MEB 4.7µF Si7272DP Si7272DP + 56µF ×3 RSENSEB 0.008 4.7µF SBR0560S1 PGND INTVCC SBR0560S1 PVIN BG2 BG1 SW2 SW1 TG2 TG1 BZX84C6V2L 1µF 1µF BST2 LTC4020 BST1 SGND SGND 33k 680pF VC SENSGND 0.033µF SENSBOT ITH 95.3k SENSTOP VFBMAX 2nF SENSVIN I 2nF LIMIT RT, 130k 284k RT CSOUT 20k 100Ω CSP SHDN RCS 0.33µF 100Ω 0.02Ω VIN_REG CSN 100k MODE 2.7k BGATE Si7135DP STAT1 BAT 2.7k 95.3k STAT2 VFBMIN 20k FBG TIMER RNG_SS VFB SGND NTC BACK RNTC 10k 6-CELL LEAD-ACID (12V) 4020 TA02 4020fd For more information www.linear.com/LTC4020 37 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