Datasheet LTC1759 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | Smart Battery Charger |
| Pages / Page | 28 / 4 — ELECTRICAL CHARACTERISTICS The. denotes specifications which apply over … |
| File Format / Size | PDF / 302 Kb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS The. denotes specifications which apply over the full operating temperature range (TJ = 0
Model Line for this Datasheet
Text Version of Document
LTC1759
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range (TJ = 0
°
C to 100
°
C), otherwise specifications are TA = 25
°
C. VCC = DCIN = 18V, VBAT1, 2 = 12.6V, VDD = 3.3V unless otherwise specified. PARAMETER CONDITIONS MIN TYP MAX UNITS Thermistor Decoder (Note 11)
Combined Input Leakage on RNR and THERM 200 nA Thermistor Trip (COLD/OR) RWEAK = 475k ±1% ● 80 100 120 kΩ Thermistor Trip (IDEAL/COLD) RNR = 10k ±1 % ● 26.4 30 33.6 kΩ Thermistor Trip (HOT/IDEAL) RNR = 10k ±1 % ● 2.64 3 3.36 kΩ Thermistor Trip (UR/HOT) RUR = 1k ±1 % ● 440 500 560 Ω
DACs
Charging Current Resolution Guaranteed Monotonic Above IMAX/16 10 bits Charging Current Granularity RILIMIT = 0 1 mA RILIMIT = 10k ±1 % 2 mA RILIMIT = 33k ±1 % 4 mA RILIMIT = Open (or Short to VDD) 8 mA Wake-Up Charging Current (IWAKE-UP) (Note 8) 80 mA Charging Current Limit (IMAX) RILIMIT = 0 1023 mA RILIMIT = 10k ±1 % 2046 mA RILIMIT = 33k ±1 % 4092 mA RILIMIT = Open (or Short to VDD) 8184 mA ISET RDS(ON) 25 Ω ISET IOFF VISET = 2.7V ● 1 µA Charging Voltage Resolution Guaranteed Monotonic (2.5V ≤ VBAT ≤ 21V) 10 bits Charging Voltage Granularity RVLIMIT = 0 16 mV RVLIMIT = 10k ±1 % 16 mV RVLIMIT = 33k ±1 % 32 mV RVLIMIT = 100k ±1 % 32 mV RVLIMIT = Open (or Short to VDD) 32 mV Charging Voltage Limit RVLIMIT = 0 ● 8.33 8.432 8.485 V RVLIMIT = 10k ±1 % ● 12.50 12.64 12.72 V RVLIMIT = 33k ±1 % ● 16.67 16.864 16.97 V RVLIMIT = 100k ±1 % ● 20.82 21.056 21.18 V RVLIMIT = Open (or Short to VDD) (Note 2) 32.736 V
Logic Levels (Note 12)
SCL/SDA Input Low Voltage (VIL) ● 0.6 V SCL/SDA Input High Voltage (VIH) ● 1.4 V SDA Output Low Voltage (VOL) IPULLUP = 350µA ● 0.4 V SCL/SDA Input Current (IIL) VSDA, VSCL = VIL ● 1 µA SCL/SDA Input Current (IIH) VSDA, VSCL = VIH ● 1 µA INTB Output Low Voltage (VOL) IPULLUP = 500µA ● 0.4 V INTB Output Pull-Up Current VINTB = VOL ● 3.5 10 17.5 µA CHGEN Output Low Voltage (VOL) IOL = 200µA ● 0.4 V CHGEN Output High Voltage (VOH) IOH = – 200µA ● VDD – 0.4 V SDB Shutdown Threshold ● 1 2 V SDB Pin Current 0V ≤ VSDB ≤ 3V 8 µA Power-On Reset Duration VDD Ramp from 0V to > 3V in < 5µs 100 µs 4
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range (TJ = 0
°
C to 100
°
C), otherwise specifications are TA = 25
°
C. VCC = DCIN = 18V, VBAT1, 2 = 12.6V, VDD = 3.3V unless otherwise specified. PARAMETER CONDITIONS MIN TYP MAX UNITS Thermistor Decoder (Note 11)
Combined Input Leakage on RNR and THERM 200 nA Thermistor Trip (COLD/OR) RWEAK = 475k ±1% ● 80 100 120 kΩ Thermistor Trip (IDEAL/COLD) RNR = 10k ±1 % ● 26.4 30 33.6 kΩ Thermistor Trip (HOT/IDEAL) RNR = 10k ±1 % ● 2.64 3 3.36 kΩ Thermistor Trip (UR/HOT) RUR = 1k ±1 % ● 440 500 560 Ω
DACs
Charging Current Resolution Guaranteed Monotonic Above IMAX/16 10 bits Charging Current Granularity RILIMIT = 0 1 mA RILIMIT = 10k ±1 % 2 mA RILIMIT = 33k ±1 % 4 mA RILIMIT = Open (or Short to VDD) 8 mA Wake-Up Charging Current (IWAKE-UP) (Note 8) 80 mA Charging Current Limit (IMAX) RILIMIT = 0 1023 mA RILIMIT = 10k ±1 % 2046 mA RILIMIT = 33k ±1 % 4092 mA RILIMIT = Open (or Short to VDD) 8184 mA ISET RDS(ON) 25 Ω ISET IOFF VISET = 2.7V ● 1 µA Charging Voltage Resolution Guaranteed Monotonic (2.5V ≤ VBAT ≤ 21V) 10 bits Charging Voltage Granularity RVLIMIT = 0 16 mV RVLIMIT = 10k ±1 % 16 mV RVLIMIT = 33k ±1 % 32 mV RVLIMIT = 100k ±1 % 32 mV RVLIMIT = Open (or Short to VDD) 32 mV Charging Voltage Limit RVLIMIT = 0 ● 8.33 8.432 8.485 V RVLIMIT = 10k ±1 % ● 12.50 12.64 12.72 V RVLIMIT = 33k ±1 % ● 16.67 16.864 16.97 V RVLIMIT = 100k ±1 % ● 20.82 21.056 21.18 V RVLIMIT = Open (or Short to VDD) (Note 2) 32.736 V
Logic Levels (Note 12)
SCL/SDA Input Low Voltage (VIL) ● 0.6 V SCL/SDA Input High Voltage (VIH) ● 1.4 V SDA Output Low Voltage (VOL) IPULLUP = 350µA ● 0.4 V SCL/SDA Input Current (IIL) VSDA, VSCL = VIL ● 1 µA SCL/SDA Input Current (IIH) VSDA, VSCL = VIH ● 1 µA INTB Output Low Voltage (VOL) IPULLUP = 500µA ● 0.4 V INTB Output Pull-Up Current VINTB = VOL ● 3.5 10 17.5 µA CHGEN Output Low Voltage (VOL) IOL = 200µA ● 0.4 V CHGEN Output High Voltage (VOH) IOH = – 200µA ● VDD – 0.4 V SDB Shutdown Threshold ● 1 2 V SDB Pin Current 0V ≤ VSDB ≤ 3V 8 µA Power-On Reset Duration VDD Ramp from 0V to > 3V in < 5µs 100 µs 4
