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LTC3633 数据表(PDF) 3 Page - Linear Technology

部件名 LTC3633
功能描述  Dual Channel 3A, 15V Monolithic Synchronous Step-Down Regulator
PDF  28 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC3633 数据表(HTML) 3 Page - Linear Technology

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LTC3633
3
3633f
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN
Supply Range
l
3.6
15
V
IQ
Input DC Supply Current (VIN1 + VIN2)
Both Channels Active (Note 5)
Sleep Current
Shutdown
MODE = 0V
MODE = INTVCC, VFB1, VFB2 > 0.6
RUN = 0V
1.3
500
13
mA
μA
μA
VFB
Feedback Reference Voltage
l
0.594
0.6
0.606
V
ΔVLINE_REG
Reference Voltage Line Regulation
VIN = 3.6V to 15V
0.02
%/V
ΔVLOAD_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
VON = 1V, VIN = 4V
20
ns
tOFF
Minimum Off Time
VIN = 6V
40
60
ns
fOSC
Oscillator Frequency
VRT = INTVCC
RT = 160k
RT = 80k
1.4
1.7
3.4
2
2
4
2.6
2.3
4.6
MHz
MHz
MHz
ILIM
Valley Switch Current Limit
Channel 1 (3A)
Channel 2 (3A)
2.6
2.6
3.5
3.5
4.5
4.5
A
A
RDS(ON)
Channel 1
Top Switch On-Resistance
Bottom Switch On-Resistance
Channel 2
Top Switch On-Resistance
Bottom Switch On-Resistance
130
65
130
65
mΩ
mΩ
mΩ
mΩ
ISW(LKG)
Switch Leakage Current
VIN = 15V, VRUN = 0V
0.01
±1
μA
VVIN-OV
VIN Overvoltage Lockout Threshold
VIN Rising
VIN Falling
16.8
15.8
17.5
16.5
18
17
V
V
INTVCC Voltage
3.6V < VIN < 15V, 0mA Load
3.1
3.3
3.5
V
INTVCC Load Regulation
0mA to 50mA Load, VIN = 4V to 15V
0.7
%
RUN Threshold Rising
RUN Threshold Falling
l
l
1.18
0.98
1.22
1.01
1.26
1.04
V
V
RUN Leakage Current
VIN = 15V
0
±3
μA
V2P5 Voltage
ILOAD = 0mA to 10mA
l
2.46
2.5
2.54
V
PGOOD Good-to-Bad Threshold
VFB Rising
VFB Falling
8
–8
10
–10
%
%
PGOOD Bad-to-Good Threshold
VFB Falling
VFB Rising
–3
3
–5
5
%
%
RPGOOD
PGOOD Pull-Down Resistance
10mA Load
15
Ω
tPGOOD
Power Good Filter Time
20
40
μs
tSS
Internal Soft-Start Time
400
700
μs
VFB During Tracking
TRACKSS = 0.3V
0.28
0.3
0.315
V
ITRACKSS
TRACKSS Pull-Up Current
1.4
μA
VPHMODE
PHMODE Threshold Voltage
PHMODE VIH
PHMODE VIL
1
0.3
V
V
The
l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at TJ = 25°C. VIN = 12V, INTVCC = 3.3V, unless otherwise noted.



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