Document
SGM4064 Over-Voltage Protection IC and Li+ Charger
Front-End Protection IC with LDO Mode
GENERAL DESCRIPTION
The SGM4064 is a charger front-end integrated circuit designed to provide protection to Li-Ion batteries from failures of the charging circuitry. The IC continuously monitors the input voltage and the battery voltage. The device operates like a linear regulator, maintaining a 5.1V output with input voltages up to the input over-voltage threshold (VOVP = 6.8V). During input over-voltage conditions, the IC immediately turns off the internal pass FET disconnecting the charging circuitry from the damaging input source. Additionally, if the battery voltage rises to unsafe levels while charging, power is removed from the system. The IC also monitors its die temperature and switches off if it exceeds 145 ℃ . When the IC is controlled by a processor, the IC provides status information about fault conditions to the host.
The SGM4064 is available in Green TDFN-2×2-8L package and is rated over the -40 ℃ to +85 ℃ temperature range.
FEATURES
● Input Over-Voltage Protection ● Accurate Battery Over-Voltage Protection ● Soft-Start to Prevent Inrush Currents ● Soft-Stop to Prevent Voltage Spikes ● 18V Maximum Input Voltage ● Supports up to 1.5A Load Current ● Thermal Shutdown ● Enable Function ● Fault Status Indication ● Available in Green TDFN-2×2-8L Package
APPLICATIONS
Smart Phones, Mobile Phones PDAs MP3 Players Low-Power Handheld Devices
APPLICATION SCHEMATIC
AC
VDC
Adapter
GND
OUT
IN
CIN 2.2μF
SGM4064
VBAT
RILIM
ILIM VSS
Charging Circuit
COUT 2.2μF
SYSTEM
SG Micro Corp www.sg-micro.com
OCTOBER 2017 – REV. A. 2
SGM4064
Over-Voltage Protection IC and Li+ Charger Front-End Protection IC with LDO Mode
PACKAGE/ORDERING INFORMATION
MODEL SGM4064
PACKAGE DESCRIPTION
TDFN-2×2-8L
SPECIFIED TEMPERATURE
RANGE
-40℃ to +85℃
ORDERING NUMBER
SGM4064YDE8G/TR
PACKAGE MARKING
4064 XXXX
PACKING OPTION
Tape and Reel, 3000
NOTE: XXXX = Date Code.
Green (RoHS & HSF): SG Micro Corp defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If you have additional comments or questions, please contact your SGMICRO representative directly.
ABSOLUTE MAXIMUM RATINGS
IN (with respect to VSS)..................................... -0.3V to 28V OUT (with respect to VSS)....... -0.3V to MIN (VIN + 0.3V, 6V) ILIM, FAULT , CE , VBAT (with respect to VSS) ............................................................................. -0.3V to 6V Output Source Current (OUT Pin)...................................... 2A Output Sink Current ( FAULT Pin)................................. 15mA Package Thermal Resistance TDFN-2×2-8L, θJA ...................................................... 75℃/W Junction Temperature.................................................+150℃ Storage Temperature Range ........................ -65℃ to +150℃ Lead Temperature (Soldering 10 sec) ........................+260℃ ESD Susceptibility HBM............................................................................. 4000V MM................................................................................. 200V
RECOMMENDED OPERATING CONDITIONS
Operating Temperature Range ....................... -40℃ to +85℃ IN Voltage Range, VI ...........................................3.3V to 18V Current, OUT Pin, IO ............................................1.5A (MAX) OCP Programming Resistor, RILIM ................. 92kΩ to 640kΩ
OVERSTRESS CAUTION
Stresses beyond those listed may cause permanent damage to the device. Functional operation of the device at these or any other conditions beyond those indicated in the operational section of the specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
ESD SENSITIVITY CAUTION
This integrated circuit can be damaged by ESD if you don’t pay attention to ESD protection. SGMICRO recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
DISCLAIMER
SG Micro Corp reserves the right to make any change in circuit design, specification or other related things if necessary without notice at any time.
SG Micro Corp www.sg-micro.com
OCTOBER 2017 2
SGM4064 PIN CONFIGURATION
Over-Voltage Protection IC and Li+ Charger Front-End Protection IC with LDO Mode
(TOP VIEW)
IN 1 VSS 2 NC 3 FAULT 4
GND
8 OUT 7 ILIM 6 VBAT 5 CE
TDFN-2×2-8L
PIN DESCRIPTION
PIN 1 2 3
4
5
6 7 8 Exposed Pad
NAME IN VSS NC
FAULT
CE VBAT ILIM OUT GND
FUNCTION
Input Power. Connected to external DC supply. Bypass IN to VSS with a ceramic capacitor (1μF MIN).
G.