Datasheet LTC4110 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | Battery Backup System Manager |
| Pages / Page | 52 / 3 — ELECTRICAL CHARACTERISTICS. The. denotes the specifi cations which apply … |
| File Format / Size | PDF / 466 Kb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS. The. denotes the specifi cations which apply over the full operating
Model Line for this Datasheet
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LTC4110
ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. Unless otherwise specifi ed, VDCIN = VDCOUT = VDCDIV = 12V, VBAT = 8.4V, GND = SGND = CLP = CLN = SHDN = 0V and RVREF = 49.9k. All currents into device pins are positive and all currents out of device pins are negative. All voltages are referenced to GND, unless otherwise specifi ed. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Power Input
DCIN Operating Voltage Range Charge or Calibration Modes l 4.5 19 V DCOUT Operating Voltage Range Charge or Calibration Modes l 4.5 19 V Backup Mode l 2.7 19 V VBAT Operating Voltage Range Backup Mode l 2.7 19 V ISPLY Supply Current (IDCIN + IDCOUT) in Idle Mode 2 3 mA (Note 4) IBIDL Battery Current in Idle Mode (Notes 4 and 5) 30 45 μA IBBU Battery Current in Backup Mode (Note 5) VDCIN = 0 2 3 mA IBSD Battery Current in Shutdown (Note 5) VSHDN = VBAT, VDCIN = 0 20 45 μA VUVI Undervoltage Lockout Exit Threshold VDCIN Increasing l 3.7 4 4.45 V VUVD Undervoltage Lockout Entry Threshold VDCIN Decreasing l 3.4 3.7 4.1 V VUVH Undervoltage Lockout Hysteresis 400 mV
VDD Regulator
VDD Output Voltage No Load l 4.5 4.75 5 V VDD(MIN) Output Voltage IDD = –10mA l 4.25 V
Charging Performance
VFTOL Charge Float Voltage Accuracy 4.20V for Li-Ion. 2.35V for Lead Acid (Note 8) –0.5 0.5 % VCHG = GND –5°C < TA < 85°C (Note10) –0.8 0.8 % –40°C < TA < 85°C l –1 1 % VFATOL Charge Float Voltage Adjust Accuracy 0.3V and –0.3V for Li-Ion Batteries, l –2 2 % 0.15V and –0.15V for Lead Acid Batteries (Note 8) IBTOL Bulk Charge Current Accuracy (Note 7) VCSP – VCSN =100mV –3 3 % VBAT ≥ 3.1V –40°C < TA < 85°C l –5 5 % IPTOL Preconditioning and Wake-Up Current VBAT ≥ 3.3V (Note 8), VCSP – VCSN = 10mV; –30 30 % Accuracy (Note 7) Li-Ion and NiMH/NiCd Batteries Only VBAT ≤ 3.3 (Note 8), VCSP – VCSN = 10mV; –40 40 % Li-Ion and NiMH/NiCd Batteries Only ISKVA Voltage Error Amplifi er Sink Current at ITH Pin VITH = 2V 96 μA ISRCA Current Error Amplifi er Source Current at ITH VITH = 2V –24 μA Pin ISKCA Current Error Amplifi er Sink Current at ITH Pin VITH = 2V 24 μA IVCHG VCHG Pin Bias Current VCHG = 1.25V –100 100 nA VBC Bulk Charge Threshold Voltage; Li-Ion, VCHG = GND 2.80 3.00 3.20 V VBAT Increasing (Note 8) NiMH/NiCd 0.84 0.90 0.96 V VBCH Bulk Charge Threshold Voltage Hysteresis; Li-Ion, VCHG = GND 85 mV VBAT Decreasing (Note 8) NiMH/NiCd 40 mV VAR Auto Recharge Threshold Voltage; Standard Li-Ion Only; VBAT Decreasing Specifi ed as Percentage of Float Voltage 93 95 97 % VARH Auto Recharge Threshold Hysteresis Voltage; Standard Li-Ion Only; Specifi ed as 2 % VBAT Increasing Percentage of Float Voltage 4110fb 3
ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. Unless otherwise specifi ed, VDCIN = VDCOUT = VDCDIV = 12V, VBAT = 8.4V, GND = SGND = CLP = CLN = SHDN = 0V and RVREF = 49.9k. All currents into device pins are positive and all currents out of device pins are negative. All voltages are referenced to GND, unless otherwise specifi ed. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Power Input
DCIN Operating Voltage Range Charge or Calibration Modes l 4.5 19 V DCOUT Operating Voltage Range Charge or Calibration Modes l 4.5 19 V Backup Mode l 2.7 19 V VBAT Operating Voltage Range Backup Mode l 2.7 19 V ISPLY Supply Current (IDCIN + IDCOUT) in Idle Mode 2 3 mA (Note 4) IBIDL Battery Current in Idle Mode (Notes 4 and 5) 30 45 μA IBBU Battery Current in Backup Mode (Note 5) VDCIN = 0 2 3 mA IBSD Battery Current in Shutdown (Note 5) VSHDN = VBAT, VDCIN = 0 20 45 μA VUVI Undervoltage Lockout Exit Threshold VDCIN Increasing l 3.7 4 4.45 V VUVD Undervoltage Lockout Entry Threshold VDCIN Decreasing l 3.4 3.7 4.1 V VUVH Undervoltage Lockout Hysteresis 400 mV
VDD Regulator
VDD Output Voltage No Load l 4.5 4.75 5 V VDD(MIN) Output Voltage IDD = –10mA l 4.25 V
Charging Performance
VFTOL Charge Float Voltage Accuracy 4.20V for Li-Ion. 2.35V for Lead Acid (Note 8) –0.5 0.5 % VCHG = GND –5°C < TA < 85°C (Note10) –0.8 0.8 % –40°C < TA < 85°C l –1 1 % VFATOL Charge Float Voltage Adjust Accuracy 0.3V and –0.3V for Li-Ion Batteries, l –2 2 % 0.15V and –0.15V for Lead Acid Batteries (Note 8) IBTOL Bulk Charge Current Accuracy (Note 7) VCSP – VCSN =100mV –3 3 % VBAT ≥ 3.1V –40°C < TA < 85°C l –5 5 % IPTOL Preconditioning and Wake-Up Current VBAT ≥ 3.3V (Note 8), VCSP – VCSN = 10mV; –30 30 % Accuracy (Note 7) Li-Ion and NiMH/NiCd Batteries Only VBAT ≤ 3.3 (Note 8), VCSP – VCSN = 10mV; –40 40 % Li-Ion and NiMH/NiCd Batteries Only ISKVA Voltage Error Amplifi er Sink Current at ITH Pin VITH = 2V 96 μA ISRCA Current Error Amplifi er Source Current at ITH VITH = 2V –24 μA Pin ISKCA Current Error Amplifi er Sink Current at ITH Pin VITH = 2V 24 μA IVCHG VCHG Pin Bias Current VCHG = 1.25V –100 100 nA VBC Bulk Charge Threshold Voltage; Li-Ion, VCHG = GND 2.80 3.00 3.20 V VBAT Increasing (Note 8) NiMH/NiCd 0.84 0.90 0.96 V VBCH Bulk Charge Threshold Voltage Hysteresis; Li-Ion, VCHG = GND 85 mV VBAT Decreasing (Note 8) NiMH/NiCd 40 mV VAR Auto Recharge Threshold Voltage; Standard Li-Ion Only; VBAT Decreasing Specifi ed as Percentage of Float Voltage 93 95 97 % VARH Auto Recharge Threshold Hysteresis Voltage; Standard Li-Ion Only; Specifi ed as 2 % VBAT Increasing Percentage of Float Voltage 4110fb 3
