參數(shù)資料
型號： LTC3727IG-1#TR
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： 3 A SWITCHING CONTROLLER, 580 kHz SWITCHING FREQ-MAX, PDSO28
封裝： 5.30 MM, PLASTIC, SSOP-28
文件頁數(shù)： 27/32頁
文件大?。?/td> 366K
代理商： LTC3727IG-1#TR
4
LTC3727/LTC3727-1
3727fc
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 LTC3727E/LTC3727E-1 are guaranteed to meet performance
specifications from 0
°C to 85°C. Specifications over the –40°C to 85°C
operating temperature range are assured by design, characterization and
correlation with statistical process controls. The LTC3727IG-1 is
guaranteed to meet performance specifications over the –40
°C to 85°C
operating temperature range.
Note 3: TJ is calculated from the ambient temperature TA and power
dissipation PD according to the following formulas:
Efficiency vs Output Current
and Mode (Figure 13)
Efficiency vs Output Current
(Figure 13)
Efficiency vs Input Voltage
(Figure 13)
TYPICAL PERFOR A CE CHARACTERISTICS
UW
OUTPUT CURRENT (A)
0.001
0
EFFICIENCY
(%)
10
30
40
50
100
70
0.01
0.1
1
3727 G01
20
80
90
60
10
FORCED
CONTINUOUS
MODE
Burst Mode
OPERATION
VIN = 15V
VOUT = 8.5V
CONSTANT
FREQUENCY
(BURST DISABLE)
OUTPUT CURRENT (A)
0.001
EFFICIENCY
(%)
70
80
10
3727 G02
60
50
0.01
0.1
1
100
90
VIN = 10V
VIN = 15V
VIN = 7V
VIN = 20V
VOUT = 5V
INPUT VOLTAGE (V)
5
EFFICIENCY
(%)
70
80
3727 G03
60
50
15
25
35
100
VOUT = 5V
IOUT = 3A
90
The
● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 15V, VRUN/SS1, 2 = 5V unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
LTC3727EG/LTC3727EG-1/LTC3727IG-1: TJ = TA + (PD 95 °C/W)
LTC3727EUH-1: TJ = TA + (PD 34 °C/W)
Note 4: The LTC3727/LTC3727-1 are tested in a feedback loop that servos
VITH1, 2 to a specified voltage and measures the resultant VOSENSE1, 2.
Note 5: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 6: Rise and fall times are measured using 10% and 90% levels. Delay
times are measured using 50% levels.
Note 7: The minimum on-time condition is specified for an inductor
peak-to-peak ripple current
≥40% of IMAX (see minimum on-time
considerations in the Applications Information section).
RPLLIN
PLLIN Input Resistance
50
k
Ω
IPLLFLTR
Phase Detector Output Current
Sinking Capability
fPLLIN < fOSC
–15
μA
Sourcing Capability
fPLLIN > fOSC
15
μA
3.3V Linear Regulator
V3.3OUT
3.3V Regulator Output Voltage
No Load
●
3.25
3.35
3.45
V
V3.3IL
3.3V Regulator Load Regulation
I3.3 = 0mA to 10mA
0.5
2.5
%
V3.3VL
3.3V Regulator Line Regulation
6V < VIN < 30V (LTC3727)
0.05
0.2
%
6V < VIN < 30V (LTC3727-1)
0.05
0.3
%
PGOOD Output
VPGL
PGOOD Voltage Low
IPGOOD = 2mA
0.1
0.3
V
IPGOOD
PGOOD Leakage Current
VPGOOD = 5V
±1
μA
VPG
PGOOD Trip Level, Either Controller
VOSENSE with Respect to Set Output Voltage
VOSENSE Ramping Negative
– 6
–7.5
– 9.5
%
VOSENSE Ramping Positive
6
7.5
9.5
%
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相關代理商/技術(shù)參數(shù)
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