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參數(shù)資料
| 型號(hào)： | LTC3412AMPFE#TR |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 6 A SWITCHING REGULATOR, 4000 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 4.40 MM, PLASTIC, TSSOP-16 |
| 文件頁數(shù)： | 14/20頁 |
| 文件大?。?/td> | 316K |
| 代理商： | LTC3412AMPFE#TR |
LTC3412A
3412afe
electricAl chArActeristics
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC3412AE is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the –40°C to 125°C operating
junction temperature range are assured by design, characterization and
correlation with statistical process controls. The LTC3412AI is guaranteed
to meet performance specifications over the –40°C to 125°C operating
junction temperature range. The LTC3412AMP is guaranteed and tested to
meet performance specifications over the full –55°C to 125°C operating
junction temperature range. Note that the maximum ambient temperature
consistent with these specifications is determined by specific operating
conditions in conjunction with board layout, the rated package thermal
resistance and other environmental factors.
The l denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at TA ≈ TJ = 25°C. VIN = 3.3V unless otherwise specified.
Note 3: The LTC3412A is tested in a feedback loop that adjusts VFB to
achieve a specified error amplifier output voltage (ITH).
Note 4: Dynamic supply current is higher due to the internal gate charge
being delivered at the switching frequency.
Note 5: TJ is calculated from the ambient temperature TA and power
dissipation as follows: LTC3412AFE: TJ = TA + PD (38°C/W)
LTC3412AUF: TJ = TA + PD (34°C/W)
Note 6: 4MHz operation is guaranteed by design and not production tested.
Note 7: Switch on resistance is guaranteed by design and test condition in
the UF package and by final test correlation in the FE package.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SVIN
Signal Input Voltage Range
2.25
5.5
V
VFB
Regulated Feedback Voltage
(Note 3)
E-, I-Grades
MP-Grade
l
0.784
0.780
0.800
0.816
V
IFB
Voltage Feedback Leakage Current
0.1
0.2
A
VFB
Reference Voltage Line Regulation
VIN = 2.7V to 5.5V (Note 3)
l
0.04
0.2
%V
VLOADREG
Output Voltage Load Regulation
Measured in Servo Loop, VITH = 0.36V
Measured in Servo Loop, VITH = 0.84V
l
0.02
–0.02
0.2
–0.2
%
VPGOOD
Power Good Range
±7.5
±9
%
RPGOOD
Power Good Pull-Down Resistance
120
200
Ω
IQ
Input DC Bias Current
Active Current
Sleep
Shutdown
(Note 4)
VFB = 0.78V, VITH = 1V
VFB = 1V, VITH = 0V
VRUN = 0V, VMODE = 0V
250
64
0.02
330
80
1
A
fOSC
Switching Frequency
Switching Frequency Range
ROSC = 294kΩ
(Note 6)
0.88
0.3
1
1.1
4
MHz
fSYNC
SYNC Capture Range
(Note 6)
0.3
4
MHz
RPFET
RDS(ON) of P-Channel FET
ISW = 1A (Note 7)
77
110
mΩ
RNFET
RDS(ON) of N-Channel FET
ISW = –1A (Note 7)
65
90
mΩ
ILIMIT
Peak Current Limit
4.5
6
A
VUVLO
Undervoltage Lockout Threshold
1.75
2
2.25
V
ILSW
SW Leakage Current
VRUN = 0V, VIN = 5.5V
0.1
1
A
VRUN
RUN Threshold
0.5
0.65
0.8
V
IRUN
RUN/SS Leakage Current
1
A
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