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參數(shù)資料
| 型號： | LTC3860IUH#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, 1250 kHz SWITCHING FREQ-MAX, PQCC32 |
| 封裝： | 5 X 5 MM, LEAD FREE, PLASTIC, MO-220WHHD, QFN-32 |
| 文件頁數(shù)： | 31/36頁 |
| 文件大?。?/td> | 436K |
| 代理商： | LTC3860IUH#PBF |
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LTC3860
4
3860fc
ELECTRICAL CHARACTERISTICS The l denotes the specications which apply over the full operating
junction temperature range, otherwise specications are at TA = 25°C (Note 3). VCC = 5V, VRUN1,2 = 5V, VFREQ = VCLKIN = 0V, VFB = 0.6V,
fOSC = 0.6MHz unless otherwise specied.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IFREQ
FREQ Pin Output Current
VFREQ = 0.8V
19
21
23
μA
tCLKIN(HI)
CLKIN Pulse Width High
VCLKIN = 0V to 5V
100
ns
tCLKIN(LO)
CLKIN Pulse Width Low
VCLKIN = 0V to 5V
100
ns
RCLKIN
CLKIN Pull-Up Resistance
13
kΩ
VCLKIN
CLKIN Input Threshold
VCLKIN Falling
VCLKIN Rising
1.2
2
V
VFREQ
FREQ Input Threshold
VCLKIN = 0V
VFREQ Falling
VFREQ Rising
1.5
2.5
V
VOL(CLKOUT)
CLKOUT Low Output Voltage
ILOAD = –500μA
0.2
V
VOH(CLKOUT)
CLKOUT High Output Voltage
ILOAD = 500μA
VCC – 0.2
V
θ2-θ1
Channel 1-to-Channel 2 Phase Relationship VPHSMD = 0V
VPHSMD = Float
VPHSMD = VCC
180
120
Deg
θCLKOUT-θ1
CLKOUT-to-Channel 1 Phase Relationship
VPHSMD = 0V
VPHSMD = Float
VPHSMD = VCC
60
90
240
Deg
PWM/PWMEN Outputs
PWM
PWM Output High Voltage
ILOAD = 500μA
l
4.5
V
PWM Output Low Voltage
ILOAD = –500μA
l
0.5
V
PWM Output Current in Hi-Z State
±5
μA
PWM Maximum Duty Cycle
91.5
%
PWMEN
PWMEN Output High Voltage
ILOAD = 1mA
l
4.5
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 according to the following formula:
TJ = TA + (PD θJA)
Note 3: The LTC3860 is tested under pulsed load conditions such that
TJ ≈ TA. The LTC3860E is guaranteed to meet performance specications
from 0°C to 85°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
LTC3860I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The maximum ambient temperature consistent with
these specications is determined by specic operating conditions in
conjunction with board layout, the rated package thermal resistors and
other environmental factors.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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