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參數(shù)資料
| 型號： | LTC3773EUHF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PQCC38 |
| 封裝： | 5 X 7 MM, PLASTIC, MO-220WHKD, QFN-38 |
| 文件頁數(shù)： | 27/32頁 |
| 文件大小： | 461K |
| 代理商： | LTC3773EUHF |
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LTC3773
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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 LTC3773 is guaranteed to meet performance specications
from 0°C to 85°C. Specications over the – 40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls. TJ is calculated from the ambient
temperature TA and power dissipation PD according to the following
formula.
LTC3773EG: TJ = TA + (PD x 95°C/W)
LTC3773EUHF: TJ = TA + (PD x 34°C/W)
Note 3: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to ground unless otherwise
specied.
Note 4: The IC is tested in a feedback loop that adjusts VFB to achieve a
specied error amplier output voltage (VITH).
Note 5: Guaranteed by design, not subject to test.
Note 6: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 7: RDS(ON) limit is guaranteed by design and/or correlation to static
test.
Note 8: The minimum on-time condition corresponds to an inductor
peak-to-peak ripple current of ≥40% of IMAX (see minimum on-time
considerations in the Applications Information section).
(Note 3) The
● denotes the specications which apply over the full
operating temperature range, otherwise specications are at TA = 25°C. VCC = VDR = VBOOST = VSDB = 5V, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Oscillator and Phase-Locked Loop
PLLIN/FC, PHASEMD, PLLFLTR
Logic Input
VLO
Low Level Input Voltage
1.0
V
VFLOAT
Floating Voltage
1.6
V
VHI
High Level Input Voltage
3.0
V
VPLLIN
PLLIN Synchronization Input Threshold
1
V
IPLLFLTR
Phase Detector Output Current
VPLLFLTR = 1.5V
Sinking Capability
fPLLIN < fOSC
25
A
Sourcing Capability
fPLLIN > fOSC
–25
A
PRELPHS
Controller 2 - Controller 1 Phase
PHASEMD Floats or VPHASEMD = 0V
120
Deg
Controller 3 - Controller 1 Phase
240
Deg
Controller 2 - Controller 1 Phase
VPHASEMD = 5V
90
Deg
Controller 3 - Controller 1 Phase
270
Deg
CLKOUT
Controller 1 TG to CLKOUT Phase
PHASEMD Floats
0
Deg
VPHASEMD = 0V
60
Deg
VPHASEMD = 5V
180
Deg
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