Datasheet
2
LTC1759
ABSOLUTE MAXIMUM RATINGS
W
WW
U
(Note 1)
Voltage at V
CC
, UV, BAT1, CLP,CLN, SPIN,
SENSE with respect to AGND ....................–0.3V to 27V
Voltage at DCIN, BAT2 with Respect
to DGND ....................................................–0.3V to 27V
Voltage at INTB, SDA, SCL, DCDIV with Respect
to DGND ..................................................... – 0.3V to 7V
BOOST, BOOSTC Voltage with Respect to V
CC
........ 10V
Voltage at V
DD
with Respect to DGND ........ –0.3V to 7V
SW Voltage with Respect to AGND .............. –2V to V
CC
GBIAS, SYNC ............................................ –0.3V to 10V
V
C
, PROG, V
SET
Voltage with Respect
to AGND ......................................................–0.3V to 7V
TGATE, BGATE Current Continuous ..................±200mA
TGATE, BGATE Output Energy (per Cycle) ................2µJ
PGND, DGND with Respect to AGND .................... ±0.3V
Current into Any Pin .........................................±100mA
Operating Ambient Temperature Range...... 0°C to 70°C
Operating Junction
Temperature Range .............................. –40°C to 125°C
Storage Temperature ........................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
ORDER PART
NUMBER
Consult factory for Industrial and Military grade parts.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
TOP VIEW
G PACKAGE
36-LEAD PLASTIC SSOP
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
PGND
BGATE
GBIAS
BOOSTC
V
CC
BAT1
SPIN
SENSE
PROG
V
C
V
SET
V
LIMIT
I
LIMIT
BAT2
DCIN
DCDIV
RNR
THERM
BOOST
TGATE
SW
SYNC
SDB
AGND
UV
INFET
CLP
CLN
COMP1
CHGEN
INTB
SDA
SCL
V
DD
I
SET
DGND
T
JMAX
= 125°C, θ
JA
= 85°C/ W
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature range (T
J
= 0°C to 100°C), otherwise specifications are
T
A
= 25°C. V
CC
= DCIN = 18V, V
BAT1, 2
= 12.6V, V
DD
= 3.3V unless otherwise specified.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Supply and Reference
DCIN, V
CC
Operating Voltage ● 11 24 V
V
CC
Operating Current V
CC
≤ 24V ● 12 20 mA
DCIN Operating Current V
DCIN
= 24V ● 85 150 µA
UV Lockout Threshold Voltage on UV Pin Rising ● 6.3 6.7 7.25 V
UV Pin Input Current 0V ≤ V
UV
≤ 8V ● –1 5 µA
Battery Discharge Current V
UV
≤ 0.4V, All Connected Pins 40 80 µA
V
DD
Operating Voltage ● 3.0 5.5 V
V
DD
Operating Current Charging, V
DD
= 5.5V, Shorted Thermistor 1.35 2 mA
Not Charging, V
DD
= 5.5V 80 150 µA
V
DD
Undervoltage Lockout ● 1.6 2.2 2.9 V
Switching Regulator
Charging Voltage Accuracy (Notes 3, 5) 2.465V ≤ V
BAT2
≤ V
MAX
● –1 1 %
Charging Current Accuracy (Note 3) R
SET
Tolerance = 1% –5 5 %
PACKAGE/ORDER INFORMATION
W
U
U
LTC1759CG