Features

Constant voltage MPPT algorithm, maximizing solar panel efficiency
7V~30V wide solar panel input voltage
Various charging mode: solar/AC adapter/USB charger (2A max charge current)
Three individual ON/OFF controllable regulated power supply for low-power applications
All multi-layer ceramic capacitors (MLCC), safe, stable and high-efficiency
Various protection functions
USB connector with ESD shell

Applications

Smart solar environment monitor system
Solar powered robot
Small solar street lamp
Solar power bank

Specification

Solar power management IC: LTC3652
Solar input voltage (SOLAR IN): 7V~30V
Battery input (BAT IN): 3.7V single cell Li-polymer/Li-ion battery
Charge current(USB/SOLAR IN): 2A Max
Charging cutoff voltage(USB/SOLAR IN): 4.2V±1%
MPPT setting voltages：OFF/9V/12V/18V
USB IN voltage: 5V
Regulated power supply: OUT1=5V 1.5A; OUT2=3.3V 1A; OUT3=9V/12V 0.5A
Regulated power supply efficiency (3.7V battery IN)
 OUT1: 86%@50%Load
 OUT2: 92%@50%Load
 OUT3 (9V OUT): 89%@50%Load
USB charge efficiency: 84%@1A
Solar charge efficiency (18V SOLAR IN)：78%@1A
Maximum quiescent current: <3 mA
Protections
 BAT IN: over charge /over discharge /over current /reverse connection protection
 OUT1-OUT3/USB OUT: short circuit/over current/over heat protection
 SOLAR IN: reverse connection protection
Operation temperature：-40℃～85℃
Dimension：78.0mm*68.0mm