LTC3586-2/LTC3586-3
High Efficiency USB Power
Manager with Boost,
Buck-Boost and Dual Bucks
DESCRIPTION FEATURES
Power Manager
n High Efficiency Switching PowerPathв„ў Controller
with Bat-Trackв„ў Adaptive Output Control and
Instant-On Operatio Programmable USB or Wall Current Limit
(100mA/500mA/1A)
n Full Featured Li-Ion/Polymer Battery Charger with
Float Voltage of 4.2V (LTC3586-2) or 4.1V
(LTC3586-3) with 1.5A Maximum Charge Current
n Internal 180mО© Ideal Diode Plus External Ideal Diode
Controller Powers Load in Battery Mode
n VUVLO , IVOUT = 0ВµA
VBUS = 0V, IVOUT = 0ВµA (Ideal Diode Mode)
BAT < VTRKL BAT < VTRKL 1.000 V 0.100 V 358623f 3 LTC3586-2/LTC3586-3
ELECTRICAL
CHARACTERISTICS The
l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25В°C. VBUS = 5V, BAT = 3.8V, VIN1 = VIN2 = VIN3 = VIN4 = VOUT3 = 3.8V,
VOUT4 = 5V, RPROG = 1k, RCLPROG = 3.01k, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX VTRKL Trickle Charge Threshold Voltage BAT Rising 2.7 2.85 3.0 –75 –100 ∆VTRKL Trickle Charge Hysteresis Voltage VRECHRG Recharge Battery Threshold Voltage Threshold Voltage Relative to VFLOAT 130 tTERM Safety Timer Termination Timer Starts When BAT = VFLOAT 3.3 tBADBAT Bad Battery Termination Time BAT < VTRKL 0.42 hC/10 End-of-Charge Indication Current Ratio (Note 6) 0.088 UNITS …