參數(shù)資料
型號: LTC3611IWP
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 10 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PQCC64
封裝: 9 X 9 MM, PLASTIC, QFN-64
文件頁數(shù): 21/26頁
文件大小: 411K
代理商: LTC3611IWP
LTC3611
3611fd
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Internal VCC Regulator
VINTVCC
Internal VCC Voltage
6V < VIN < 30V, VEXTVCC = 4V
l
4.7
5
5.6
V
ΔVLDO(LOADREG)
Internal VCC Load Regulation
ICC = 0mA to 20mA, VEXTVCC = 4V
–0.1
±2
%
VEXTVCC
EXTVCC Switchover Voltage
ICC = 20mA, VEXTVCC Rising
l
4.5
4.7
V
ΔVEXTVCC
EXTVCC Switch Drop Voltage
ICC = 20mA, VEXTVCC = 5V
150
300
m/V
ΔVEXTVCC(HYS)
EXTVCC Switchover Hysteresis
500
m/V
PGOOD Output
ΔVFBH
PGOOD Upper Threshold
VFB Rising
7
10
13
%
ΔVFBL
PGOOD Lower Threshold
VFB Falling
–7
–10
–13
%
ΔVFB(HYS)
PGOOD Hysteresis
VFB Returning
1
2.5
%
VPGL
PGOOD Low Voltage
IPGOOD = 5mA
0.15
0.4
V
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: TJ is calculated from the ambient temperature TA and power
dissipation PD as follows:
TJ = TA + (PD 28°C/W) (θJA is simulated per JESD51-7 high
effective thermal conductivity test board)
θJC = 1°C/W (θJC is simulated when heatsink is applied at the
bottom of the package)
Note 3: The LTC3611 is tested in a feedback loop that adjusts VFB to
achieve a specied error amplier output voltage (ITH). The specication at
85°C is not tested in production. This specication is assured by design,
characterization, and correlation to testing at 125°C.
Note 4: The LTC3611 is tested under pulsed load conditions such that
TJ ≈ TA. The LTC3611E is guaranteed to meet specications from
0°C to 125°C junction temperature. Specications over the –40°C to
125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LTC3611I is guaranteed over the full –40°C to 125°C operating junction
temperature range. Note that the maximum ambient temperature
consistent with these specications is determined by specic operating
conditions in conjunction with board layout, the rated package thermal
impedance and other environmental factors.
typicAl perForMAnce chArActeristics
Transient Response
(Discontinuous Mode)
Start-Up
VIN = 25V
VOUT = 2.5V
RLOAD = 0.5
FIGURE 6 CIRCUIT
3611 G03
40ms/DIV
RUN/SS
2V/DIV
VOUT
1V/DIV
IL
5A/DIV
LOAD = 1A TO 10A
VIN = 25V
VOUT = 2.5V
FCB = INTVCC
FIGURE 6 CIRCUIT
3611 G02
VOUT
200mV/DIV
IL
5A/DIV
ILOAD
5A/DIV
40s/DIV
LOAD STEP 0A TO 8A
VIN = 25V
VOUT = 2.5V
FCB = 0
FIGURE 6 CIRCUIT
3611 G01
40s/DIV
VOUT
200mV/DIV
IL
5A/DIV
ILOAD
5A/DIV
electricAl chArActeristics The
l
denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VIN = 15V unless otherwise noted.
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