LTC1960 データシートの表示（PDF） - Linear Technology
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LTC1960 Datasheet PDF : 28 Pages
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LTC1960
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range (Note 7), otherwise specifications are at TA = 25°C. VDCIN = 20V, VBAT1 = 12V, VBAT2 = 12V, unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP
MAX UNITS
Supply and Reference
DCIN Operating Range
DCIN Selected
6
28
V
ICH
DCIN Operating Current
Not Charging (DCIN Selected)
Charging (DCIN Selected)
1
1.5
mA
1.3
2
mA
Battery Operating Voltage Range
Battery Selected, PowerPath Function (Note 2)
6
28
V
VFDC
VFB1
VFB2
VFSCN
UVLO
Battery Drain Current
VPLUS Diodes Forward Voltage:
DCIN to VPLUS
BAT1 to VPLUS
BAT2 to VPLUS
SCN to VPLUS
Undervoltage Lockout Threshold
Battery Selected, Not Charging, VDCIN = 0V
175
µA
IVCC = 10mA
IVCC = 0mA
IVCC = 0mA
IVCC = 0mA
0.8
V
0.7
V
0.7
V
0.7
V
VPLUS Ramping Down, Measured at VPLUS l 3
3.5
3.9
V
to GND
UVHYS UV Lockout Hysteresis
VVCC
VCC Regulator Output Voltage
VLDR
VCC Load Regulation
Switching Regulator
VPLUS Rising, Measured at VPLUS to GND
IVCC = 0mA to 10mA
60
mV
5
5.2
5.4
V
0.2
1
%
VTOL
Overall Voltage Accuracy
5V ≤ VOUT < 25V, (Note 3)
–0.8
l –1
0.8
%
1
%
ITOL
Overall Current Accuracy
fOSC
Regulator Switching Frequency
fDO
Regulator Switching Frequency in Low
Dropout Mode
IDAC Value = 3FFHEX
VCSP , VCSN = 12V
Duty Cycle ≥ 99%
–5
l –6
5
%
6
%
255
300
345
kHz
20
25
kHz
DCMAX
IMAX
ISNS
CMSL
Regulator Maximum Duty Cycle
Maximum Current Sense Threshold
CA1 Input Bias Current
CAI Input Common Mode Low
VITH = 2.2V
VCSP = VCSN > 5V
99
99.5
%
140
155
190
mV
150
µA
0
V
CMSH CAI Input Common Mode High
VCL1
CL1 Turn-On Threshold
TGATE Transition Time:
TG tr
TGATE Rise Time
TG tf
TGATE Fall Time
BGATE Transition Time:
BG tr
BGATE Rise Time
BG tf
BGATE Fall Time
Trip Points
CLOAD = 3300pF, 10% to 90%
CLOAD = 3300pF, 10% to 90%
CLOAD = 3300pF, 10% to 90%
CLOAD = 3300pF, 10% to 90%
VDCIN–0.2
V
95
100
105
mV
50
90
ns
50
90
ns
50
90
ns
40
80
ns
VTR
DCDIV/LOPWR Threshold
VDCDIV or VLOPWR Falling
l 1.166 1.19
1.215
V
VTHYS DCDIV/LOPWR Hysteresis Voltage
VDCDIV or VLOPWR Rising
30
mV
IBVT
DCDIV/LOPWR Input Bias Current
VDCDIV or VLOPWR = 1.19V
20
200
nA
VTSC
Short-Circuit Comparator Threshold
VSCP – VSCN, VCC ≥ 5V
l 90
100
115
mV
VFTO
Fast PowerPath Turn-Off Threshold
VDCDIV Rising from VCC
6
7
7.9
V
VOVSD
Overvoltage Shutdown Threshold as a Percent VSET Rising from 0.8V Until TGATE and
of Programmed Charger Voltage
BGATE Stop Switching
107
%
1960fb
3
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