LTC3636 Ver la hoja de datos (PDF) - Linear Technology
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LTC3636 Datasheet PDF : 28 Pages
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LTC3636/LTC3636-1
Electrical Characteristics The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at TJ = 25°C (Note 2). VIN1 = VIN2 = 12V unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP MAX UNITS
VIN1
Supply Range
VIN1 Supply Range
VIN2 Supply Range
Output Voltage Range (Note 4)
3.1V < VIN1 < 20V
LTC3636
LTC3636-1
l 3.1
l 3.1
l 1.5
0.6
1.8
20
V
20
V
20
V
5
V
12
V
IQ
Input DC Supply Current (VIN1 + VIN2)
Both Channels Active (Note 5)
MODE = 0V
Sleep Current
Shutdown
MODE = INTVCC, VFB1, VFB2 > 0.6
RUN1 = RUN2 = 0V
1.3
mA
600
µA
13
µA
VFB
∆VLINE_REG
∆VLOAD_REG
IFB
gm(EA)
tON
tOFF
fOSC
Feedback Reference Voltage
Reference Voltage Line Regulation
Output Voltage Load Regulation
Feedback Pin Input Current
Error Amplifier Transconductance
Minimum On Time
Minimum Off Time
Oscillator Frequency
VIN = 3.1V to 20V
ITH = 0.8V to 1.6V
ITH = 1.2V
VRT = INTVCC
RT = 162k
RT = 80.6k
l 0.594
0.6 0.606
V
0.002
%/V
0.05
%
±30
nA
1.8
mS
30
ns
100
ns
1.4
2
2.6
MHz
1.7
2
2.3
MHz
3.4
4
4.6
MHz
ILIM
Valley Switch Current Limit
Negative Valley Switch Current Limit
ITH = 1.8V
6
6.6
7.2
A
–4.2
A
RDS(ON)
Top Switch On-Resistance
Bottom Switch On-Resistance
32
mΩ
18
mΩ
ISW(LKG)
Switch Leakage Current
Internal Temperature Monitor
Internal Temperature Monitor Slope (Note 6)
VIN = 20V, VRUN = 0V
TA = 25°C
0.01 ±1
µA
1.5
V
200
°C/V
VVIN-OV
VIN Overvoltage Lockout Threshold
VIN Rising
VIN Falling
22.5
V
20.3
21.5 22.5
V
INTVCC Voltage
3.6V < VIN < 20V, 0mA Load
3.1
3.3
3.5
V
INTVCC Load Regulation
0mA to 50mA Load, VIN = 4V to 20V
1.3
%
INTVCC Undervoltage Lockout Threshold
INTVCC Rising, VIN = INTVCC
INTVCC Falling, VIN = INTVCC
2.7
2.9
V
2.55
V
RUN Threshold Rising
RUN Threshold Falling
l 1.16
1.22 1.28
V
l 0.96
1.01 1.06
V
RUN Leakage Current
0
±3
µA
PGOOD Good-to-Bad Threshold
PGOOD Bad-to-Good Threshold
VFB Rising
VFB Falling
VFB Rising
VFB Falling
8
10
%
–8
–10
%
–3
–5
%
3
5
%
For more information www.linear.com/LTC3636
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