Datasheet LTC1980 (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | Combination Battery Charger and DC/DC Converter |
| Pages / Page | 16 / 2 — ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). ELECTRICAL … |
| File Format / Size | PDF / 245 Kb |
| Document Language | English |
ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). ELECTRICAL CHARACTERISTICS The
Model Line for this Datasheet
Text Version of Document
LTC1980
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
VREG to GND ... –0.5V to 12V ORDER PART TOP VIEW V NUMBER BAT to GND ... –0.5V to 12V PROG 1 24 SS PROG, ISENSE .. –0.5V to 5V PROGT 2 23 OVP PROGT, REGFB, V LTC1980EGN C, BATT1, BATT2 REGFB 3 22 CAOUT TIMER, SS .. –0.5V to VBIAS2 V 4 C 21 ISENSE LDOFB, LDODRV .. –0.5V to VREG LDOFB 5 20 GND WA, VBIAS1, REG ... –0.5V to 12V LDODRV 6 19 VBIAS2 MODE ... –0.5V to VBIAS1 V 7 REG 18 VBAT VBIAS2 ... –0.5V to 5V WA 8 17 TIMER OVP .. –0.5V to 5V BATT1 9 16 MODE PGND to GND .. Connect Together BATT2 10 15 REG Operating Ambient Temperature Range RGTDR 11 14 BGTDR (Note 2) ... – 40°C to 85°C PGND 12 13 VBIAS1 Storage Temperature Range ... – 65°C to 125°C GN PACKAGE 24-LEAD NARROW PLASTIC SSOP Lead Temperature (Soldering, 10 sec).. 300°C TJMAX = 125°C, θJA = 85°C/W Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VBAT = 2.4V, VREG = 5V, VBAT unloaded. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VBAT Positive Supply Voltage, VBAT 2.85 10 V VREG Positive Supply Voltage, VREG 2.85 10 V VFB Feedback Voltage REGFB Tied to VC ● 1.194 1.225 1.256 V VPROGT Voltage on PROGT Pin PROGT Tied to VC 1.194 1.225 1.256 V IBURST Burst Mode Operation Regulator Mode, REGFB = 1.5V 0.75 mA Supply Current, Quiescent, VREG IHIGH Supply Current, Quiescent, VREG Regulator Mode, REGFB = 0V ● 2 4.3 mA ISHDN Supply Current in Shutdown Mode, VREG Mode = 0V 15 µA VUVL Positive-Going Undervoltage Lockout Voltage From Either VBAT or VREG 2.45 2.7 2.85 V VUVHYS Undervoltage Lockout Hysteresis From Either VBAT or VREG 100 mV ISS Soft-Start Ramp Current BATT1 = 0, BATT2 = 0, Charger Mode 10 µA VFLOAT0 Output Float Voltage in Constant Voltage Mode BATT1 = 0, BATT2 = 0 ● 4.059 4.1 4.141 V VFLOAT1 Output Float Voltage in Constant Voltage Mode BATT1 = 1, BATT2 = 0 ● 4.158 4.2 4.242 V VFLOAT2 Output Float Voltage in Constant Voltage Mode BATT1 = 0, BATT2 = 1 (Note 3) ● 8.118 8.2 8.282 V VFLOAT3 Output Float Voltage in Constant Voltage Mode BATT1 = 1, BATT2 = 1 (Note 3) ● 8.316 8.4 8.484 V VFLOAT4 Output Float Voltage in Constant Voltage Mode BATT1 = Open, BATT2 = Don’t Care ● 1.207 1.225 1.243 V Measured from OVP Input VRCHG0 Recharge Threshold, Delta Voltage with Respect BATT2 = 0, BATT1 = 0 or 1 200 mV to Float Voltage VRCHG1 Recharge Threshold, Delta Voltage with Respect BATT2 = 1, BATT1 = 0 or 1 400 mV to Float Voltage 1980f 2
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
VREG to GND ... –0.5V to 12V ORDER PART TOP VIEW V NUMBER BAT to GND ... –0.5V to 12V PROG 1 24 SS PROG, ISENSE .. –0.5V to 5V PROGT 2 23 OVP PROGT, REGFB, V LTC1980EGN C, BATT1, BATT2 REGFB 3 22 CAOUT TIMER, SS .. –0.5V to VBIAS2 V 4 C 21 ISENSE LDOFB, LDODRV .. –0.5V to VREG LDOFB 5 20 GND WA, VBIAS1, REG ... –0.5V to 12V LDODRV 6 19 VBIAS2 MODE ... –0.5V to VBIAS1 V 7 REG 18 VBAT VBIAS2 ... –0.5V to 5V WA 8 17 TIMER OVP .. –0.5V to 5V BATT1 9 16 MODE PGND to GND .. Connect Together BATT2 10 15 REG Operating Ambient Temperature Range RGTDR 11 14 BGTDR (Note 2) ... – 40°C to 85°C PGND 12 13 VBIAS1 Storage Temperature Range ... – 65°C to 125°C GN PACKAGE 24-LEAD NARROW PLASTIC SSOP Lead Temperature (Soldering, 10 sec).. 300°C TJMAX = 125°C, θJA = 85°C/W Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VBAT = 2.4V, VREG = 5V, VBAT unloaded. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VBAT Positive Supply Voltage, VBAT 2.85 10 V VREG Positive Supply Voltage, VREG 2.85 10 V VFB Feedback Voltage REGFB Tied to VC ● 1.194 1.225 1.256 V VPROGT Voltage on PROGT Pin PROGT Tied to VC 1.194 1.225 1.256 V IBURST Burst Mode Operation Regulator Mode, REGFB = 1.5V 0.75 mA Supply Current, Quiescent, VREG IHIGH Supply Current, Quiescent, VREG Regulator Mode, REGFB = 0V ● 2 4.3 mA ISHDN Supply Current in Shutdown Mode, VREG Mode = 0V 15 µA VUVL Positive-Going Undervoltage Lockout Voltage From Either VBAT or VREG 2.45 2.7 2.85 V VUVHYS Undervoltage Lockout Hysteresis From Either VBAT or VREG 100 mV ISS Soft-Start Ramp Current BATT1 = 0, BATT2 = 0, Charger Mode 10 µA VFLOAT0 Output Float Voltage in Constant Voltage Mode BATT1 = 0, BATT2 = 0 ● 4.059 4.1 4.141 V VFLOAT1 Output Float Voltage in Constant Voltage Mode BATT1 = 1, BATT2 = 0 ● 4.158 4.2 4.242 V VFLOAT2 Output Float Voltage in Constant Voltage Mode BATT1 = 0, BATT2 = 1 (Note 3) ● 8.118 8.2 8.282 V VFLOAT3 Output Float Voltage in Constant Voltage Mode BATT1 = 1, BATT2 = 1 (Note 3) ● 8.316 8.4 8.484 V VFLOAT4 Output Float Voltage in Constant Voltage Mode BATT1 = Open, BATT2 = Don’t Care ● 1.207 1.225 1.243 V Measured from OVP Input VRCHG0 Recharge Threshold, Delta Voltage with Respect BATT2 = 0, BATT1 = 0 or 1 200 mV to Float Voltage VRCHG1 Recharge Threshold, Delta Voltage with Respect BATT2 = 1, BATT1 = 0 or 1 400 mV to Float Voltage 1980f 2
