LTC1731-4.1 Просмотр технического описания (PDF) - Linear Technology
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LTC1731-4.1 Datasheet PDF : 12 Pages
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LTC1731-4.1/LTC1731-4.2
ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Supply Voltage (VCC) ................................... 13.2V
Input Voltage (SENSE, DRV, BAT,
TIMER, PROG) .................................. – 0.3V to 13.2V
Output Voltage (CHRG) ......................... – 0.3V to 13.2V
Operating Temperature Range (Note 2) .....– 40° to 85°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
TOP VIEW
BAT 1
CHRG 2
TIMER 3
GND 4
8 SENSE
7 VCC
6 DRV
5 PROG
MS8 PACKAGE
8-LEAD PLASTIC MSOP
TJMAX = 150°C, θJA = 200°C/W
ORDER PART
NUMBER
LTC1731EMS8-4.1
LTC1731EMS8-4.2
MS8 PART MARKING
LTJK
LTKQ
Consult factory for parts specified with wider operating temperature ranges.
TOP VIEW
BAT 1
CHRG 2
TIMER 3
GND 4
8 SENSE
7 VCC
6 DRV
5 PROG
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 125°C/W
ORDER PART
NUMBER
LTC1731ES8-4.1
LTC1731ES8-4.2
S8 PART MARKING
173141
173142
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 6V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VCC
Input Supply Voltage
q 4.5
12
V
ICC
Input Supply Current
Charger On, Current Mode
Shutdown Mode
Sleep Mode (Battery Drain Current)
q
1
3
mA
q
1
2
mA
7
20
µA
VBAT
Regulated Output Voltage
LTC1731-4.1 (5V ≤ VCC ≤ 12V)
LTC1731-4.2 (5V ≤ VCC ≤ 12V)
q 4.059 4.1 4.141
V
q 4.158 4.2 4.242
V
IBAT
Current Mode Charge Current
RPROG = 19.6k, RSENSE = 0.2Ω
RPROG = 19.6k, RSENSE = 0.2Ω
RPROG = 97.6k, RSENSE = 0.2Ω
465 500 535
mA
q 415
585
mA
70 100 130
mA
ITRIKL Trickle Charge Current
VBAT = 2V, RPROG = 19.6k, ITRIKL = (VCC – VSENSE)/0.2Ω q 30
50 100
mA
VTRIKL
VUV
Trickle Charge Threshold Voltage
VCC Undervoltage Lockout Voltage
From Low to High
From Low to High
q 2.35 2.457 2.55
V
q
4.1 4.5
V
∆VUV
VCC Undervoltage Lockout Hysteresis
200
mV
VMSD
Manual Shutdown Threshold Voltage
PROG Pin Low to High
PROG Pin High to Low
2.457
V
2.446
V
2
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