Datasheet LTC4015 (Analog Devices) - 7

LTC4015
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at TA = 25°C. (Note 2), DVCC = 3.3V, UVCLFB = 1.5; CELLS1 = INTVCC; EQ, MPPT, CELLS0, CELLS2, CHEM0, CHEM1 = 0; RT = 95.3k; RCCREF = 301k, RNTCBIAS = RNTC = 10k; BATSENS = CSN = CSP; DRVCC = INTVCC; SYS = CLP = CLN. Conditions: Charging; VIN = 12V, SYS = 12V, BATSENS = 7.4V …..Battery Only; VIN = 0V, SYS = 8.4V, BATSENS = 8.4V SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Oscillator
fOSC Switching Frequency RT = 95.3k l 475 500 525 kHz fMAX Maximum Programmable Frequency RT = 47.5k 1 MHz fMIN Minimum Programmable Frequency RT = 237k 200 kHz
Gate Drivers
RUP-TG TG Pull-Up On-Resistance 2.0 Ω RDOWN-TG TG Pull-Down On-Resistance 0.5 Ω RUP-BG BG Pull-Up On-Resistance 2.0 Ω RDOWN-BG TG Pull-Down On-Resistance 0.5 Ω tR-TG TG 10% to 90% Rise Time CLOAD = 3.3nF 20 ns tF-TG TG 90% to 10% Fall Time CLOAD = 3.3nF 10 ns tR-BG BG 10% to 90% Rise Time CLOAD = 3.3nF 20 ns tF-BG BG 90% to 10% Fall Time CLOAD = 3.3nF 10 ns tNO Non-Overlap Time 60 ns tON(MIN) Minimum On-Time 140 ns DCMAX Maximum Duty Cycle 98.4 %
VC Error Amplifier
gm Transconductance to VC pin gm (VCSP–CSM) (Constant-Current) 4.10 mmho gm (VBATSENS) (Constant-Voltage Lithium) 2 Cell; (gm = 1.06 –3 • 2/(7 • Cell Count) 0.15 mmho gm (VBATSENS) (Constant-Voltage LA) 6 Cell; (gm = 1.06 –3 • 3/(7 • Cell Count) 0.08 mmho gm (VUVCLFB) (Input Voltage Regulation) 1.06 mmho gm (VCLP–CLM) (Input Current Limiting) 4.10 mmho
Telemetry A/D Measurement Subsystem, Battery Only Mode
VERR Measurement Error (Note 6) VIN = 1V ±100 mV VIN = 35V ±1.5 % VSYS = 2.5V ±100 mV VSYS = 35V ±1.5 % VBAT = 1.75V, 1 Cell Li-Ion ±50 mV VBAT = 35V, 9 Cell Li-Ion ±1.5 % VCLP–CLN = 0mV ±200 µV VCLP–CLN = 32mV ±2.5 % VCSP–CSN = 0mV ±200 µV VCSP–CSN = 32mV ±2.5 % NTC/NTCBIAS = 50%, 75% ±2 % NTC/NTCBIAS = 5% ±3.5 % 4015fb For more information www.linear.com/LTC4015 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Data Sheet Conventions Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram I2C Timing Diagram Operation Applications Information Register Description DETAILED Register Descriptions Typical Applications Package Description Revision History Typical Application Related Parts