LT1505CG Linear Technology, LT1505CG Datasheet - Page 3

• Manufacturer Part Number: LT1505CG
• Description: IC BATT CHARGER CONST I/V 28SSOP
• Manufacturer: Linear Technology

Specifications of LT1505CG

• Function: Charge Management
• Battery Type: Li-Ion, NiCd, NiMH
• Voltage - Supply: 11 V ~ 24 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP (0.200", 5.30mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

temperature range, otherwise specifications are at T
outputs unless otherwise noted.
PARAMETER
Preset Battery Voltage (12.3V, 16.4V, 12.6V, 16.8V)
All Preset Battery Voltages
Preset Battery Voltage Tolerance
BAT2 Pin Input Current
Voltage Setting Resistors Tolerance (R4, R5, R6, R7)
Shutdown
Undervoltage Lockout (TGATE and BGATE “Off”)
Threshold (Note 9)
UV Pin Input Current
Reverse Current from Battery in Micropower
Shutdown (Note 10)
Shutdown Threshold at SHDN Pin When V
is Connected
SHDN Pin Current
Supply Current in Shutdown
(V
Minimum I
Minimum I
Current Sense Amplifier CA1 Inputs (SENSE, BAT)
Input Bias Current (SENSE, BAT)
Input Common Mode Low
Input Common Mode High
SPIN Input Current
Oscillator
Switching Frequency (f
Switching Frequency Tolerance
SYNC Pin Input Current
Synchronization Pulse Threshold on SYNC Pin
Synchronization Frequency
Maximum Duty Cycle
V
(Comparator A2) (Note 4)
Maximum Duty Cycle of Natural Frequency 200kHz
(Note 5)
Current Amplifier CA2
Transconductance
Maximum V
I
V
ELECTRICAL CHARACTERISTICS
VC
BOOST
C
SHDN
at Shutdown
Current (Out of Pin)
is Low, V
Threshold to Turn TGATE Off
PROG
PROG
C
for Switch Off
for Switching “On”
for Switching “Off” at V
CC
is Connected)
NOM
)
PROG
CC
1V
CONDITIONS
Measured at BAT2 Pin
(V
V
Measured at UV Pin
0V V
V
V
0V V
V
V
V
V
V
V
V
Measured at (V
V
V
V
V
BAT2
BAT
CC
CC
SHDN
SHDN
SHDN
SHDN
SYNC
SYNC
C
C
C
SHDN
BAT
Low to High
Hysteresis
= 1V, I
< 0.45V
A
= V
= 25 C. V
0.6V
+ 0.3V) V
= V
24V
= 0V
= 2V
UV
SHDN
= High
= Low (Shutdown)
= High, V
= Low (Shutdown)
= Low (Shutdown)
20V, V
SW
PRESET
VC
The
= Battery Voltage
8V
= 1 A
UV
3V
BOOST
CC
SPIN
– 1V
CC
denotes specifications which apply over the full operating
0.4V,
= 18V, V
– V
24V
2V (Note 8)
SW
)
BAT
= 12.6V, V
CLN
= V
CC
(LT1505), no load on any
– 0.25
MIN
– 40
180
170
240
150
6.3
0.9
6.8
–1
– 1
– 1
– 1
85
1
– 2.4
0.25
TYP
– 50
200
200
200
0.5
6.7
1.2
7.3
– 4
10
15
90
V
CC
– 120
MAX
– 0.5
7.25
0.35
– 22
– 10
– 30
220
230
280
300
2.0
7.6
0.6
40
50
20
10
50
1
6
5
2
8
2
3
– 0.3
LT1505
UNITS
1505fc
3
mho
kHz
kHz
kHz
mA
mA
mA
mA
mA
%
%
%
%
A
V
A
A
V
A
A
A
A
V
V
A
A
V
V
V
V
A
V