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参数资料
| 型号： | LTC3634EFE#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 5.5 A DUAL SWITCHING CONTROLLER, 4600 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封装： | 4.40 MM, LEAD FREE, PLASTIC, TSSOP-28 |
| 文件页数： | 22/28页 |
| 文件大小： | 359K |
| 代理商： | LTC3634EFE#PBF |
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LTC3634
3
3634f
elecTrical characTerisTics The
l
denotes the specifications which apply over the full junction
temperature range, otherwise specifications are at TA = 25°C (Note 4). VIN = 12V, INTVCC = 3.3V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN
VIN1, Operating Supply Range
VIN2, Operating Supply Range
VIN1 > 3.6V
l
3.6
1.4
15
V
Output Voltage Range
VON = VOUT (Note 6)
0.6
3
V
IQ
Input DC Supply Current (VIN1 + VIN2)
Active (Note 7)
Shutdown
RUN1 = RUN2 = VIN
RUN1 = RUN2 = 0V
1.3
15
mA
A
VFBREG1
Feedback Reference Voltage
3.6V < VIN < 15V, 0.5V < ITH < 1.8V
0°C < TA < 85°C
–40°C < TA < 125°C
l
0.594
0.592
0.6
0.606
V
VFBREG2
Feedback Reference Voltage
3.6V < VIN < 15V, 0.5V < ITH < 1.8V
l
VTTR – 6
VTTR
VTTR + 6
mV
VTTR
VTTR Voltage Reference
1.5V < VDDQIN < 2.6V
ILOAD = ±10mA, CLOAD < 10nF
l
0.492
VDDQIN
0.50
VDDQIN
0.508
VDDQIN
V
IFB
Feedback Pin Input Current
±30
nA
gm(EA)
Error Amplifier Transconductance
ITH = 1.2V
1.0
mS
tON
Minimum On-Time
VON = 0.5V, VIN = 4V
20
ns
tOFF
Minimum Off-Time
VIN = 6V
40
60
ns
fOSC
Oscillator Frequency
VRT = INTVCC
RT = 162k
RT = 80.6k
1.4
1.7
3.4
2
4
2.6
2.3
4.6
MHz
ILIM1
Channel 1 Valley Switch Current Limit
Positive Limit
Negative Limit
3.3
4.4
8
5.5
A
ILIM2
Channel 2 Valley Switch Current Limit
Positive Limit
Negative Limit
3.3
4.4
8
5.5
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
Switch Leakage Current
VIN = 15V, VRUN = 0V
0.01
±1
A
VIN Overvoltage Lockout Threshold
VIN Rising
VIN Falling
16.8
15.8
17.5
16.5
18
17
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
1.18
0.98
1.22
1.01
1.26
1.04
V
RUN Leakage Current
0
±1
A
PGOOD Good-to-Bad Threshold
VFB Rising
VFB Falling
8
–8
10
–10
%
PGOOD Hysteresis
VFB from Bad-to-Good
15
mV
RPGOOD
PGOOD Pull-Down Resistance
10mA Load
15
Ω
Power Good Filter Time
20
40
s
tSS1
Channel 1 Internal Soft-Start Ramp Rate
0.7
1.2
V/ms
tSS2
Channel 2 Internal Soft-Start Ramp Rate
1.5
2.2
V/ms
VFB1 During Tracking
TRACKSS = 0.3V
0.28
0.3
0.315
V
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