LTC3706IGN(RevB) 데이터 시트보기 (PDF) - Linear Technology
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LTC3706IGN
(Rev.:RevB)
(Rev.:RevB)
Linear Technology
LTC3706IGN Datasheet PDF : 20 Pages
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LTC3706
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
Oscillator and Phase-Locked Loop
IFS
fLOW
fHIGH
Δf (RFS)
fPLL(MAX)
fPLL(MIN)
PGOOD Output
FS/SYNC Pin Sourcing Current
Oscillator Low Frequency Set Point
Oscillator High Frequency Set Point
Oscillator Resistor Set Accuracy
Maximum PLL Sync Frequency
Minimum PLL Sync Frequency
VFBH/0.6
Power Good Upper Threshold
VFBL1/0.6
Power Good Lower Threshold
VFBL2/0.6
Power Good Lower Threshold
Differential Amplifier (VSENSE AMP)
ADA
Gain
CMRR DA
Common Mode Rejection Ratio
RIN
Input Resistance
fBW
–3dB Bandwidth
CONDITIONS
VFS/SYNC = GND
VFS/SYNC = VCC
75kΩ < RFS/SYNC < 175kΩ
VFB Rising
VFB Rising
VFB Falling
VS– = GND, 1V ≤ VS+ ≤ 5V
MIN TYP MAX UNITS
20
μA
170
200
230
kHz
255
300
345
kHz
–20
20
%
500
kHz
75
kHz
115
117
119
%
91.5
93
94.5
%
89.5
91
92.5
%
0.994
1
1.006
V/V
75
dB
80
kΩ
3
MHz
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 LTC3706E is guaranteed to meet the performance specifica-
tions over the 0°C to 85°C operating temperature range. Specifications
over the –40°C to 85°C operating temperature range are assured by
design, characterization and correlation with statistical process controls.
The LTC3706I is guaranteed and tested over the full –40°C to 85°C
operating temperature range.
Note 3: Junction temperature TJ (in °C) is calculated from the ambient tem-
perature TA and the average power dissipation PD (in Watts) by the formula:
TJ = TA + θJA • PD
Refer to the Applications Information section for details.
Note 4: The LTC3706 is tested in a feedback loop that servos VFB to a
voltage near the internal 0.6V reference voltage to obtain the specified ITH
voltage (VITH = 1.2V).
Note 5: Operating supply current is measured in test mode. Dynamic
supply current is higher due to the internal gate charge being delivered at
the switching frequency. See Typical Performance Characteristics.
3706fb
4
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