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)： 23/36頁
文件大?。?/td> 436K
代理商： LTC3860IUH#PBF
LTC3860
3
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
ISS
Soft-Start Pin Output Current
VSS = 0V
2.5
μA
tSS(INTERNAL)
Internal Soft-Start Time
2ms
VFB
Regulated Feedback Voltage
0°C to 85°C
–40°C to 85°C
–40°C to 125°C
l
595.5
594
592.5
600
604.5
606
607.5
mV
ΔVFB/ΔVCC
Regulated Feedback Voltage Line
Dependence
3.0V < VCC < 5.5V
0.05
0.2
%/V
ILIMIT
ILIM Pin Output Current
VILIM = 0.8V
18
20
22
μA
Power Good
VFB(OV)
PGOOD/VFB Overvoltage Threshold
VFB Falling
VFB Rising
650
645
660
670
mV
VFB(UV)
PGOOD/VFB Undervoltage Threshold
VFB Falling
VFB Rising
530
540
555
550
mV
VPGOOD(ON)
PGOOD Pull-Down Resistance
15
60
Ω
Error Amplier
IFB
FB Pin Input Current
VFB = 600mV
–100
100
nA
IOUT
COMP Pin Output Current
Sourcing
Sinking
1
5
mA
AV(OL)
Open-Loop Voltage Gain
75
dB
SR
Slew Rate
45
V/μs
f0dB
COMP Unity-Gain Bandwidth
20
MHz
Differential Amplier
AV
Differential Amplier Voltage Gain
VVSNSN = 0V
l
1.007
1
0.993
V/V
VOS
Input Referred Offset
VVSNSN = 0V
–2
2
mV
SR
Slew Rate
45
V/μs
f0dB
Bandwidth
20
MHz
VOUT(MAX)
Maximum Output Voltage
4V
Current Sense Amplier
VISENSE(MAX)
Maximum Differential Current Sense
Voltage (VISNSP-VISNSN)
50
mV
AV(ISENSE)
Voltage Gain
18.5
V/V
VCM(ISENSE)
Input Common Mode Range
–0.3
VCC + 0.1
V
IISENSE
SENSE Pin Input Current
VCM = 1.5V
100
nA
VOS
Current Sense Input Referred Offset
0°C to 125°C
–40°C to 125°C
l
–2
–2.2
2
2.2
mV
Oscillator and Phase-Locked Loop
fOSC
Oscillator Frequency
VCLKIN = 0V
VFREQ = 0V
VFREQ = 5V
l
360
540
400
600
440
660
kHz
VCLKIN = 5V
RFREQ < 24.9k
RFREQ = 30.1k
RFREQ = 54.9k
RFREQ = 75.0k
200
300
800
1.2
kHz
MHz
Maximum Frequency
Minimum Frequency
1.25
0.25
MHz
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