Datasheet LTC4001 (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | 2A Synchronous Buck Li-Ion Charger |
| Pages / Page | 20 / 2 — ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). Order … |
| File Format / Size | PDF / 241 Kb |
| Document Language | English |
ABSOLUTE AXI U RATI GS. PACKAGE/ORDER I FOR ATIO. (Note 1). Order Options. ELECTRICAL CHARACTERISTICS. The
Model Line for this Datasheet
Text Version of Document
LTC4001
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
TOP VIEW PVIN, VINSENSE t < 1ms, DC < 1% .. –0.3V to 7V Steady State .. –0.3V to 6V BATSENS TIMER SS IDET 16 15 14 13 SW, SENSE, BAT, BATSENS, SS, FAULT, CHRG, EN, BAT 1 12 PROG NTC, PROG, IDET, TIMER Voltage .. – 0.3V to 6V SENSE 2 11 NTC 17 Operating Temperature Range (Note 3) .. – 40°C to 85°C PGND 3 10 FAULT Operating Junction Temperature GNDSENS 4 9 VINSENSE (Note 5) ... – 40°C to 125°C 5 6 7 8 IN Storage Temperature Range .. – 65°C to 125°C SW EN PV CHRG UF PACKAGE 16-LEAD (4mm × 4mm) PLASTIC QFN TJMAX = 125°C, θJA = 37°C/W EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB ORDER PART NUMBER UF PART MARKING LTC4001EUF 4001
Order Options
Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25
°
C. VIN = 5V, VEN = 0V, RPROG = 549
Ω
, RIDET = 549
Ω
, unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Supply Voltage (Note 2) 4 5.5 V IIN PVIN Connected to VINSENSE, PROG and IDET 2 mA Pins Open, Charger On Shutdown, EN = VIN 50 µA VFLOAT VBAT Regulated Float Voltage Measured from BATSENS to GNDSENS ● 4.158 4.2 4.242 V 4.179 4.2 4.221 V IBAT Current Mode Charge Current RPROG = 549Ω, VBAT = 3.5V 1.8 2 2.2 A RPROG = 1.10k, VBAT = 3.5V 0.9 1 1.1 A Shutdown, EN = VIN ±5 µA ITRIKL Trickle Charge Current VBAT = 2V 35 50 65 mA VTRIKL Trickle Charge Threshold VBAT Rising 3.05 3.1 3.20 V VBAT Falling 2.85 3.0 3.05 V VUVL VIN Undervoltage Lockout Voltage VIN Rising, Measured from VINSENSE to GNDSENS 2.7 2.82 V ∆VUVL VIN Undervoltage Lockout Hysteresis Measured from VINSENSE to GNDSENS 100 mV VASD Automatic Shutdown Threshold VINSENSE – VBATSENS Rising (Turn-On), VBATSENSE = 4V 200 250 300 mV Voltage VINSENSE – VBATSENS Falling (Turn-Off), VBATSENSE = 4V 15 30 60 mV fOSC Oscillator Frequency 1.3 1.5 1.7 MHz D Maximum Duty Factor 100 % RPFET RDS(ON) of P-Channel MOSFET Measured from PVIN to SW 127 mΩ RNFET RDS(ON) of N-Channel MOSFET Measured from SW to PGND 121 mΩ 4001f 2
W W W U U W U ABSOLUTE AXI U RATI GS PACKAGE/ORDER I FOR ATIO (Note 1)
TOP VIEW PVIN, VINSENSE t < 1ms, DC < 1% .. –0.3V to 7V Steady State .. –0.3V to 6V BATSENS TIMER SS IDET 16 15 14 13 SW, SENSE, BAT, BATSENS, SS, FAULT, CHRG, EN, BAT 1 12 PROG NTC, PROG, IDET, TIMER Voltage .. – 0.3V to 6V SENSE 2 11 NTC 17 Operating Temperature Range (Note 3) .. – 40°C to 85°C PGND 3 10 FAULT Operating Junction Temperature GNDSENS 4 9 VINSENSE (Note 5) ... – 40°C to 125°C 5 6 7 8 IN Storage Temperature Range .. – 65°C to 125°C SW EN PV CHRG UF PACKAGE 16-LEAD (4mm × 4mm) PLASTIC QFN TJMAX = 125°C, θJA = 37°C/W EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB ORDER PART NUMBER UF PART MARKING LTC4001EUF 4001
Order Options
Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25
°
C. VIN = 5V, VEN = 0V, RPROG = 549
Ω
, RIDET = 549
Ω
, unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Supply Voltage (Note 2) 4 5.5 V IIN PVIN Connected to VINSENSE, PROG and IDET 2 mA Pins Open, Charger On Shutdown, EN = VIN 50 µA VFLOAT VBAT Regulated Float Voltage Measured from BATSENS to GNDSENS ● 4.158 4.2 4.242 V 4.179 4.2 4.221 V IBAT Current Mode Charge Current RPROG = 549Ω, VBAT = 3.5V 1.8 2 2.2 A RPROG = 1.10k, VBAT = 3.5V 0.9 1 1.1 A Shutdown, EN = VIN ±5 µA ITRIKL Trickle Charge Current VBAT = 2V 35 50 65 mA VTRIKL Trickle Charge Threshold VBAT Rising 3.05 3.1 3.20 V VBAT Falling 2.85 3.0 3.05 V VUVL VIN Undervoltage Lockout Voltage VIN Rising, Measured from VINSENSE to GNDSENS 2.7 2.82 V ∆VUVL VIN Undervoltage Lockout Hysteresis Measured from VINSENSE to GNDSENS 100 mV VASD Automatic Shutdown Threshold VINSENSE – VBATSENS Rising (Turn-On), VBATSENSE = 4V 200 250 300 mV Voltage VINSENSE – VBATSENS Falling (Turn-Off), VBATSENSE = 4V 15 30 60 mV fOSC Oscillator Frequency 1.3 1.5 1.7 MHz D Maximum Duty Factor 100 % RPFET RDS(ON) of P-Channel MOSFET Measured from PVIN to SW 127 mΩ RNFET RDS(ON) of N-Channel MOSFET Measured from SW to PGND 121 mΩ 4001f 2
