LT1511 Ver la hoja de datos (PDF) - Linear Technology
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LT1511
Linear Technology
LT1511 Datasheet PDF : 16 Pages
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LT1511
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 16V, VBAT = 8V, VMAX (maximum operating VCC) = 28V.
No load on any outputs unless otherwise noted.
PARAMETER
CONDITIONS
Voltage Amplifier VA
Transconductance (Note 3)
Output Current from 50µA to 500µA
Output Source Current
VOVP = VREF + 10mV, VPROG = VREF + 10mV
OVP Input Bias Current
At 0.75mA VA Output Current
At 0.75mA VA Output Current, TJ > 90°C
Current Limit Amplifier CL1, 8V ≤ Input Common Mode
Turn-On Threshold
0.75mA Output Current
Transconductance
Output Current from 50µA to 500µA
CLP Input Current
CLN Input Current
0.75mA Output Current, VUV ≥ 0.4V
0.75mA Output Current VUV ≥ 0.4V
MIN TYP MAX
0.25
0.6
1.3
1.1
±3
±10
– 15
25
93
100
107
0.5
1
2
0.3
1
0.8
2
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Tested with Test Circuit 1.
Note 3: Tested with Test Circuit 2.
Note 4: A linear interpolation can be used for reference voltage
specification between 0°C and – 40°C.
UNITS
mho
mA
nA
nA
mV
mho
µA
mA
TYPICAL PERFORMANCE CHARACTERISTICS
Thermally Limited Maximum
Charging Current
3.0
12.6V BATTERY
2.8
8.4V BATTERY
VIN ≥ 11V
2.6
4.2V BATTERY
VIN ≥ 8V
16.8V BATTERY
2.4
2.2 (θJA=30°C/W)
TAMAX= 60°C
TJMAX = 125°C
2.0
5
10
15
20
25
30
INPUT VOLTAGE (V)
1511 • TPC01
NOTE: FOR 4.2V AND 8.4V BATTERIES MAXIMUM
CHARGING CURRENT IS 3A FOR VIN – VBAT ≥ 3V
Efficiency of Figure 1 Circuit
100
98 VIN = 16.5
VBAT = 8.4V
96
94
92
90
CHARGER EFFICIENCY
88
86
INCLUDES LOSS
84
IN DIODE D3
82
80
0.2 0.6 1.0 1.4 1.8 2.2 2.6 3.0
IBAT (A)
1511 • TPC02
ICC vs Duty Cycle
8
VCC = 16V
7
6
5
0°C
4
3
25°C
125°C
2
1
0
0 10 20 30 40 50 60 70 80
DUTY CYCLE (%)
1511 • TPC03
4
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