ZSPM4523 Datasheet, PDF (1/3 Pages) List of Unclassifed Manufacturers – High-Efficiency Solar PV MPPT Regulator for Super Cap Systems

ZSPM4523
High-Efficiency Solar PV MPPT Regulator for Super Cap Systems
Brief Description
The ZSPM4523 is a DC/DC synchronous switching
super capacitor charger with fully integrated power
switches, internal compensation, and full fault pro-
tection. It uses a temperature-independent photo-
voltaic maximum power point tracking (MPPT) calcu-
lator to optimize power output from the source during
Full-Charge Mode. Its 1MHz switching frequency
allows using small filter components, which results in
smaller board space and reduced bill-of-material
costs.
In Full-Charge Mode, the duty cycle is controlled by
the MPPT function. Once the termination voltage is
reached, the regulator operates in Constant Voltage
Mode. When the regulator is disabled (the EN pin is
low), the device draws 10µA (typical) quiescent
current from V_OUT.
The ZSPM4523 integrates a wide range of protec-
tion circuitry, including input supply under-voltage
lockout, output over-voltage protection, current
limiting, and thermal shutdown.
The ZSPM4523 includes supervisory reporting via
the NFLT (Inverted Fault) open-drain output to
interface other components in the system. Device
programming is achieved by the I²C™* interface
through the SCL and SDA pins.
Benefits
 Up to 1.5A continuous output current
 High efficiency – up to 92% at typical load
Features
 Temperature-independent MPPT regulation
 V_OUT reverse-current blocking
 Programmable temperature-compensated
termination voltage: 2.48 to 2.74 V ± 1%
 User programmable maximum charge current:
50mA to 1500mA
 Input supply under-voltage lockout
 Full protection for V_OUT over-voltage
 I²C™ program interface with EEPROM registers
 Charge status indication
Related ZMDI Smart Power Products
 ZSPM4521 High-Efficiency Charger for Li-Ion
Batteries with MPPT Regulator
 ZSPM4551 High-Efficiency Charger for Li-Ion
Batteries
 ZSPM4121 Ultra-low Power Under-Voltage Switch
 ZSPM4141 Ultra-Low-Power Linear Regulator
Available Support
 Evaluation Kit
 Support Documentation
Physical Characteristics
 Wide input voltage range: 3.2V to 7.2V
 Junction operating temperature -40°C to 125°C
 Packaged in a 16-pin PQFN (4mm x 4mm)
Photovoltaic Cells
CIN
CVdd
VDD
RPULLUP
(optional)
VIN
ZSPM4523
GND
VDD
SW
SCL
VSENSE
SDA
VOUT
EN
NFLT
PGND
ZSPM4523 Application Circuit
LOUT
RSENSE
Super Cap
COUT
VDD
RPULLUP
(optional)
* I²C™ is a trademark of NXP.
For more information, contact ZMDI via [e-mail].
© 2013 Zentrum Mikroelektronik Dresden AG — Rev.1.00 — February 14, 2013. All rights reserved. The material contained herein may not be reproduced, adapted, merged,
translated, stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.