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LTC3636 Datasheet(PDF) 3 Page - Linear Technology

Part # LTC3636
Description  Dual Channel 6A, 20V Monolithic Synchronous Step-Down Regulator
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3636 Datasheet(HTML) 3 Page - Linear Technology

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LTC3636/LTC3636-1
3
3636fb
For more information www.linear.com/LTC3636
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
l
3.1
20
V
VIN1 Supply Range
VIN2 Supply Range
3.1V < VIN1 < 20V
l
l
3.1
1.5
20
20
V
V
Output Voltage Range (Note 4)
LTC3636
LTC3636-1
0.6
1.8
5
12
V
V
IQ
Input DC Supply Current (VIN1 + VIN2)
Both Channels Active (Note 5)
Sleep Current
Shutdown
MODE = 0V
MODE = INTVCC, VFB1, VFB2 > 0.6
RUN1 = RUN2 = 0V
1.3
600
13
mA
µA
µA
VFB
Feedback Reference Voltage
l
0.594
0.6
0.606
V
∆VLINE_REG
Reference Voltage Line Regulation
VIN = 3.1V to 20V
0.002
%/V
∆VLOAD_REG Output Voltage Load Regulation
ITH = 0.8V to 1.6V
0.05
%
IFB
Feedback Pin Input Current
±30
nA
gm(EA)
Error Amplifier Transconductance
ITH = 1.2V
1.8
mS
tON
Minimum On Time
LTC3636
LTC3636-1
30
30
35
ns
tOFF
Minimum Off Time
100
ns
fOSC
Oscillator Frequency
VRT = INTVCC
RT = 162k
RT = 80.6k
1.4
1.7
3.4
2
2
4
2.6
2.3
4.6
MHz
MHz
MHz
ILIM
Valley Switch Current Limit
ITH = 1.8V
6
6.6
7.2
A
Negative Valley Switch Current Limit
–4.2
A
RDS(ON)
Top Switch On-Resistance
Bottom Switch On-Resistance
32
18
mΩ
mΩ
ISW(LKG)
Switch Leakage Current
VIN = 20V, VRUN = 0V
0.01
±1
µA
Internal Temperature Monitor
TA = 25°C
1.5
V
Internal Temperature Monitor Slope (Note 6)
200
°C/V
VVIN-OV
VIN Overvoltage Lockout Threshold
VIN Rising
VIN Falling
20.3
22.5
21.5
22.5
V
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
2.55
2.9
V
V
RUN Threshold Rising
RUN Threshold Falling
l
l
1.16
0.96
1.22
1.01
1.28
1.06
V
V
RUN Leakage Current
0
±3
µA
PGOOD Good-to-Bad Threshold
VFB Rising
VFB Falling
8
–8
10
–10
%
%
PGOOD Bad-to-Good Threshold
VFB Rising
VFB Falling
–3
3
–5
5
%
%



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