Datasheet Linear Technology LTC3128IUFD#PBF

LTC3128
3A Monolithic Buck-Boost
Supercapacitor Charger and
Balancer with Accurate Input Current Limit
FEATURES DESCRIPTION В±2% Accurate Average Input Current Limit
Programmable Up to 3A
n Programmable Maximum Capacitor Voltage Limit
n Active Charge Balancing for Fast Charging of
Unmatched Capacitors
n Charges Single or Stacked Capacitors
n V Range: 1.73V to 5.5V
IN
n V
OUT Range: 1.8V to 5.5V
n 0.590V
VRUN = 3.3V, Balancing, VFB > 0.590V 1.9
100 ВµA
µA VIN Quiescent Current – Shutdown VRUN = 0V, Not Including SW Leakage 0.6 1 µA VOUT Quiescent Current – Shutdown VRUN = 0V, Not Including SW Leakage 0.4 1 µA 1 VOUT Quiescent Current – Shutdown VRUN = 0V, VIN = 0V, Not Including SW Leakage 0.4 VIN Quiescent Current – Active VRUN = 3.3V (Note 3) 600 µA VIN Quiescent Current – UVLO VRUN = 1.5V, VIN = 1.5V, Not Including SW Leakage 25 µA VOUT Quiescent Current – UVLO VRUN = 1.5V, VIN = 1.5V, Not Including SW Leakage Input Current Limit RPROG = 22.1k (Notes 3, 7)
RPROG = 22.1k (Notes 3, 7)
RPROG = 11k (Notes 3, 7)
RPROG = 11k (Notes 3, 7)
RPROG = 5.49k (Notes 3, 7)
RPROG = 5.49k (Notes 3, 7) …