ltc1760 Linear Technology Corporation, ltc1760 Datasheet - Page 3

• Manufacturer Part Number: ltc1760
• Description: Dual Smart Battery System Manager
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
unless otherwise noted.
SYMBOL
I
f
f
DC
I
I
CMSL
CMSH
V
TG t
TG t
BG t
BG t
Trip Points
V
V
I
V
V
V
DACs
I
t
t
I
I
V
TOL
0SC
DO
MAX
SNS
BVT
RES
IP
ILOW
WAKE_UP
LIMIT
CL1
TR
THYS
TSC
FTO
OVSD
RES
MAX
r
f
r
f
PARAMETER
Current Accuracy
Regulator Switching Frequency
Regulator Switching Frequency in Low
Dropout Mode
Regulator Maximum Duty Cycle
Maximum Current Sense Threshold
CA1 Input Bias Current
CA1/I
CA1/I
CL1 Turn-On Threshold
TGATE Transition Time:
TGATE Rise Time
TGATE Fall Time
BGATE Transition Time:
BGATE Rise Time
BGATE Fall Time
DCDIV/LOPWR Threshold
DCDIV/LOPWR Hysteresis Voltage
DCDIV/LOPWR Input Bias Current
Short-Circuit Comparator Threshold
Fast Power Path Turn-Off Threshold
Overvoltage Shutdown Threshold as a
Percent of Programmed Charger Voltage
I
I
Normal Mode
Wake-Up Mode
Charging Current Granularity
Wake-Up Charging Current (Note 5)
Charging Current Limit
V
DAC
DAC
DAC
Resolution
Pulse Period:
1
1
Resolution
Input Common Mode Low
Input Common Mode High
CONDITIONS
With Respect to Current Reported by Battery
4mV/R
(Note 12)
R
R
R
R
Duty Cycle ≥99%
V
V
C
C
C
C
V
V
V
V
V
V
Stop Switching
Guaranteed Monotonic
R
R
R
R
R
R
R
R
Guaranteed Monotonic (5V < V
A
ITH
CSP
LOAD
LOAD
LOAD
LOAD
DCDIV
DCDIV
DCDIV
SCP
DCDIV
SET
ILIMIT
ILIMIT
ILIMIT
ILIMIT
ILIMIT
ILIMIT
ILIMIT
ILIMIT
ILIMIT
ILIMIT
ILIMIT
ILIMIT
= 25°C. V
= 2.2V
– V
Rising from 0.8V until TGATE and BGATE
= V
= 3300pF, 10% to 90%
= 3300pF, 10% to 90%
= 3300pF, 10% to 90%
= 3300pF, 10% to 90%
SENSE
or V
or V
or V
Rising from V
= 0 (Short to GND)
= 10k ±1%
= 33k ±1%
= Open (or Short I
= (Short I
= 10k ±1%
= 33k ±1%
= Open (or Short I
= 0 (Short I
= 10k ±1%
= 33k ±1%
= Open (or Short I
The
SCN
CSN
LOPWR
LOPWR
LOPWR
, V
> 5V
●
< Requested Current < I
DCIN
CC
denotes the specifications which apply over the full operating
LIMIT
≥ 5V
Falling
Rising
= 1.19V
= 20V, V
LIMIT
CC
to GND)
to GND)
LIMIT
LIMIT
LIMIT
BAT1
to V
to V
to V
BAT
= 12V, V
CC2
CC2
< 25V)
CC2
LIMIT
)
)
)
(Min)
BAT2
= 12V, V
●
●
●
●
●
●
●
●
●
●
●
1.166
1960
2490
3920
MIN
255
140
980
–2
–4
–8
–8
20
99
95
94
90
10
60
11
VDDS
0
6
6
= 3.3V, V
1000
2000
3000
4000
99.5
1.19
TYP
300
155
150
100
100
100
107
50
50
50
40
30
25
20
10
50
80
7
1
2
4
4
LTC1760
V
VCC2
DCIN
1.215
1070
2140
3210
4280
MAX
345
190
105
108
200
115
100
7.9
90
90
90
80
15
2
4
8
8
= 5.2V
– 0.2
UNITS
3
1760f
kHz
kHz
Bits
Bits
mA
mA
mA
mA
mV
mV
mV
mV
mV
mA
mA
mA
mA
mA
mA
mA
mA
mA
ms
µA
nA
ns
ns
ns
ns
µs
%
%
V
V
V
V