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LTC1759 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC1759
Description  Smart Battery Charger
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1759 Datasheet(HTML) 4 Page - Linear Technology

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LTC1759
ELECTRICAL CHARACTERISTICS
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%
q
80
100
120
k
Ω
Thermistor Trip (IDEAL/COLD)
RNR = 10k ±1%
q
26.4
30
33.6
k
Ω
Thermistor Trip (HOT/IDEAL)
RNR = 10k ±1%
q
2.64
3
3.36
k
Ω
Thermistor Trip (UR/HOT)
RUR = 1k ±1%
q
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
q
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
q
8.33
8.432
8.485
V
RVLIMIT = 10k ±1%
q
12.50
12.64
12.72
V
RVLIMIT = 33k ±1%
q
16.67
16.864
16.97
V
RVLIMIT = 100k ±1%
q
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)
q
0.6
V
SCL/SDA Input High Voltage (VIH)
q
1.4
V
SDA Output Low Voltage (VOL)IPULLUP = 350µA
q
0.4
V
SCL/SDA Input Current (IIL)VSDA, VSCL = VIL
q
1
µA
SCL/SDA Input Current (IIH)VSDA, VSCL = VIH
q
1
µA
INTB Output Low Voltage (VOL)IPULLUP = 500µA
q
0.4
V
INTB Output Pull-Up Current
VINTB = VOL
q
3.5
10
17.5
µA
CHGEN Output Low Voltage (VOL)IOL = 200µA
q
0.4
V
CHGEN Output High Voltage (VOH)IOH = – 200µA
q
VDD – 0.4
V
SDB Shutdown Threshold
q
12
V
SDB Pin Current
0V
≤ VSDB ≤ 3V
8
µA
Power-On Reset Duration
VDD Ramp from 0V to > 3V in < 5µs
100
µs
The q 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.



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