TS52001 Datasheet, PDF (1/22 Pages) List of Unclassifed Manufacturers – High Efficiency Li-Ion Battery Charger for Photovoltaic Sources

TS52001
Version 1.3
High Efficiency Li-Ion Battery Charger for Photovoltaic Sources
DESCRIPTION
The TS52001 is a DC/DC synchronous switching Li-
ion Battery Charger with fully integrated power
switches, internal compensation, and full fault
protection. The TS52001 utilizes a temperature-
independent photovoltaic Maximum Power Point
Tracking (MPPT-Lite™) calculator to optimize power
output from the source during Full Charge Constant-
Current (CC) mode. The switching frequency of
1MHz enables the use of small filter components,
resulting in smaller board space and reduced BOM
costs.
In Full Charge Constant-Current mode the duty cycle is
controlled by the MPPT-Lite™ regulator. Once
termination voltage is reached, the regulator operates in
voltage mode. When the regulator is disabled (EN is
low), the device draws 10uA quiescent current.
The TS52001 includes supervisory reporting through
the nFLT (Inverted Fault) open drain output to interface
other components in the system. Device programming
is achieved by an I²C interface through SCL and SDA
pins.
APPLICATIONS
 Portable solar chargers
 Off-grid systems
 Wireless sensor networks
 Smoke detectors
 HVAC controls
FEATURES
 Utilizes a temperature-independent
PV MPPT-Lite™ regulation scheme
 V_BAT reverse current blocking
 Programmable temperature-compensated
termination voltage with +/- 1% tolerance
 Up to 1.5A of continuous output current in Full
Charge Constant-Current (CC) mode
 User programmable charging current
 High efficiency – up to 92% at typical load
 Current mode PWM control in constant voltage
 Supervisor for V_BAT reported at the nFLT pin
 Input supply under-voltage lockout
 Full protection for V_BAT over-current, over-temp,
over-voltage, and charging timeout
 Charge status indication
 I2C program interface with EEPROM registers
SUMMARY SPECIFICATIONS
 Wide input voltage range: 4.0V to 8.1V
 Packaged in a 16pin QFN (4x4)
TYPICAL APPLICATION
Photovoltaic Cells
CIN
CVdd
VDD
RPULLUP
(optional)
VIN
VTH_REF
GND
VTHERM
VDD
SCL
SW
TS52001
VSENSE
SDA
VBAT
EN
nF_PLT_G
PGND
LOUT
RSENSE
VDD
RPULLUP
(optional)
RREF
COUT
Battery
RTHM
Specifications subject to change
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