ZSPM4551KIT V1.0 ZMDI, ZSPM4551KIT V1.0 Datasheet - Page 13

• Manufacturer Part Number: ZSPM4551KIT V1.0
• Description: Power Management IC Development Tools Li/Ion converter Kit
• Manufacturer: ZMDI
• Type: Battery Managementr

Specifications of ZSPM4551KIT V1.0

• Product Category: Power Management IC Development Tools
• Rohs: yes
• Product: Evaluation Kits
• Tool Is For Evaluation Of: ZSPM4551
• Input Voltage: 3.5 V to 7.2 V
• Output Voltage: 3.94 V to 4.18 V
• Interface Type: I2C
• Output Current: 1.5 A

This regulation voltage as well as the 1C charging current can be set to change based on the battery temperature.
There are four temperature ranges for which the regulation voltage can be set independently: 0°C to 10°C, 10°C
to 45°C, 45°C to 50°C, and 50°C to 60°C. The ZSPM4551 will stop charging if the temperature passes the
descending temperature threshold at 0°C or the ascending threshold at 60°C. These thresholds have 10 degrees
of hysteresis. The intermediate points have 1 degree of hysteresis.
2.1.
2.1.1.
The device is held in the off state until the EN pin voltage is HIGH ( 2.2V) and VIN rises to 3.15V (typical). There
is a 200mV hysteresis on this input, which requires the input to fall below 2.95V (typical) before the device will
disable.
2.1.2.
The current through the inductor L
tion 1.4) is reached, the ZSPM4551 will abbreviate the cycle. The current limit is always active when the regulator
is enabled.
2.1.3.
If the junction temperature of the ZSPM4551 exceeds 170°C (typical), the SW output will tri-state to protect the
device from damage. The NFLT and all other protection circuitry will stay active to inform the system of the failure
mode. Once the device cools to 160°C (typical), the device will attempt to start up again. If the device reaches
170°C, the shutdown/restart sequence will repeat.
2.1.4.
The ZSPM4551 has a battery protection circuit designed to shut down the charging profile if the battery voltage is
greater than the termination voltage. The termination voltage can change based on user programming, so the
protection threshold is set to 2% above the termination voltage. Shutting down the charging profile puts the
ZSPM4551 in a fault condition.
Data Sheet
December 4, 2012
ZSPM4551
High-Efficiency Charger for Li-Ion Batteries
Internal Protection
VIN Under-Voltage Lockout
Internal Current Limit
Thermal Shutdown
VBAT Over-Voltage Protection
© 2012 Zentrum Mikroelektronik Dresden AG — Rev. 1.00
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.
OUT
is sensed on a cycle-by-cycle basis and if the current limit (I
OCD
13 of 30
; see sec-