Datasheet Linear Technology LTC4091 — Datenblatt

LTC4091
36V Battery Charger and
Power Backup Manager
FEATURES DESCRIPTION Seamless Transition Between Primary Power
Source and Li-Ion Battery
n 2A High Voltage Step-Down Regulator with
Adaptive Output Control
n Internal 75mО© Ideal Diode Plus Optional External
Ideal Diode Controller Provides Low Loss
PowerPathв„ў When Primary Supply Not Present
n Wide Input Voltage Range: 6V to 36V (60V Abs Max)
n 4.45V Max Output Voltage
n Full Featured Li-Ion Battery Charger
n Pin Selectable 4.1V and 4.2V Charge Voltage Options
n Thermally Enhanced Low Profile (0.75mm)
6mm Г— 3mm 22-Lead DFN Package The LTCВ®4091 is a 36V Li-Ion battery charger and power
backup manager. The integrated step-down switching
regulator charges a battery from a primary power source
while providing power to the load. If primary power is lost,
the load is seamlessly transitioned to the backup Li-ion/
polymer battery. To protect sensitive downstream loads,
the maximum output voltage is 4.45V. APPLICATIONS During backup, an internal 75mО© ideal diode connects the
battery to the load. An optional external ideal diode FET …