The SGMICRO IC is high quality! Constant Current, Constant Voltage (CCCV) Charging with Floating Time-Out Timer
Constant Current Pre-charge
Maximum 2.3A Charging for 4.2V to 4.5V Battery
1.34MHz Switching Frequency
Programmable Charge Voltage and Current
4.15V Input Voltage Regulation
Output Voltage Fold-Back Charge Retaining
Thermal Regulation Options
SGM41524C: +55℃
Typical Peak Efficiency of 92% at 1.5A, VIN = 5V
-40℃ to +85℃ Operating Temperature Range
Available in a Green TDFN-2×3-8BL Package
ABSOLUTE MAXIMUM RATINGS
Voltage Range (with Respect to GND)
VIN (VVBAT = 4V)................................................................6V
VBAT (VIN Open) ................................................................6V
CC, CV, IND, NTC, SW...................................... -0.3V to 6V
Package Thermal Resistance
TDFN-2×3-8BL, θJA.................................................. 90℃/W
Junction Temperature.................................................+150℃
Storage Temperature Range .......................-65℃ to +150℃
Lead Temperature (Soldering, 10s)............................+260℃
ESD Susceptibility
HBM, Any Pin to Ground and Power ...........................4000V
CDM ............................................................................1000V
Surge Test
Input Surge Discharge (1) .................................................11V
Input Over-Voltage Clamp ...................8V or 50mA, 24 hours
NOTE:
1. Peak current in IEC61000-4-5 1.2μs/50μs 2Ω waveform.
RECOMMENDED OPERATING CONDITIONS
Supply Voltage Range ........................................3.5V to 5.5V
CC, CV, IND, NTC ............................................ -0.3V to 5.5V
Charge Current Setting Range ...........................0.3A to 2.3A
Operating Junction Temperature Range ......-40℃ to +125℃
Environmental Temperature Range ...............-40℃ to +85℃