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,
RS2 = RS3 = 200Ω (see Block Diagram), VCLN = VCC. No load on any outputs unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX
Overall
Boost Pin Current
Switch
VCC = 20V, VBOOST = 0V
VCC = 28V, VBOOST = 0V
2V ≤ VBOOST – VCC < 8V (Switch ON)
8V ≤ VBOOST – VCC ≤ 25V (Switch ON)
0.1
10
0.25 20
6
9
8
12
Switch ON Resistance
∆IBOOST/∆ISW During Switch ON
Switch OFF Leakage Current
Minimum IPROG for Switch ON
Minimum IPROG for Switch OFF at VPROG ≤ 1V
Maximum VBAT for Switch ON
Current Sense Amplifier CA1 Inputs (Sense, BAT)
8V ≤ VCC ≤ VMAX, ISW = 3A,
VBOOST – VSW ≥ 2V
VBOOST = 24V, ISW ≤ 3A
VSW = 0V, VCC ≤ 20V
20V < VCC ≤ 28V
q
0.15 0.25
25
35
q
2
100
q
4
200
q
2
4
20
q
1
2.4
q
VCC – 2
Input Bias Current
q
– 50 – 125
Input Common Mode Low
q – 0.25
Input Common Mode High
SPIN Input Current
q
VCC – 2
– 100 – 200
Reference
Reference Voltage (Note 3)
Reference Voltage
Oscillator
RPROG = 4.93k, Measured at OVP with
VA Supplying IPROG and Switch OFF
All Conditions of VCC, TJ > 0°C
TJ < 0°C (Note 4)
2.453 2.465 2.477
q 2.441
q 2.43
2.489
2.489
Switching Frequency
180 200 220
Switching Frequency
Maximum Duty Cycle
Current Amplifier CA2
All Conditions of VCC, TJ > 0°C
TJ < 0°C
TA = 25°C
q
170
200
230
q
160
230
q
85
90
93
Transconductance
Maximum VC for Switch OFF
IVC Current (Out of Pin)
VC = 1V, IVC = ±1µA
VC ≥ 0.6V
VC < 0.45V
150 250 550
q
0.6
100
3
UNITS
µA
µA
mA
mA
Ω
mA/A
µA
µA
µA
mA
V
µA
V
V
µA
V
V
V
kHz
kHz
kHz
%
%
µmho
V
µA
mA
3
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