參數(shù)資料
型號(hào)： LTC3869IUFD#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, PQCC28
封裝： 5 X 4 MM, LEAD FREE, PLASTIC, MO-220WXXX-X, QFN-28
文件頁(yè)數(shù)： 23/40頁(yè)
文件大?。?/td> 2705K
代理商： LTC3869IUFD#TRPBF
LTC3869/LTC3869-2
3
3869f
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
Main Control Loops
VIN
Input Voltage Range
4
38
V
VOUT
Output Voltage Range
0.6
12.5
V
VFB1,2
Regulated Feedback Voltage
(Notes 2, 4)
ITH1,2 Voltage = 1.2V, 0°C to 85°C
ITH1,2 Voltage = 1.2V, –40°C to 125°C
l
0.5955
0.5940
0.600
0.6045
0.6060
V
IFB1,2
Feedback Current
(Note 4)
–15
–50
nA
VREFLNREG
Reference Voltage Line Regulation
VIN = 4.0V to 38V (Note 4)
0.002
0.01
%/V
VLOADREG
Output Voltage Load Regulation
(Note 4)
Measured in Servo Loop; ITH Voltage = 1.2V to 0.7V
Measured in Servo Loop; ITH Voltage = 1.2V to 1.6V
l
0.01
–0.01
0.1
–0.1
%
gm1,2
Transconductance Amplifier gm
ITH1,2 = 1.2V; Sink/Source 5A; (Note 4)
2
mmho
IQ
Input DC Supply Current
Normal Mode
Shutdown
(Note 5)
VIN = 15V
VRUN1,2 = 0V
3
30
50
mA
A
DFMAX
Maximum Duty Factor
In Dropout
94
95
%
UVLO
Undervoltage Lockout
VINTVCC Ramping Down
l
3.0
3.2
3.4
V
UVLOHYS
UVLO Hysteresis
0.6
V
VOVL
Feedback Overvoltage Lockout
Measured at VFB1,2
l
0.64
0.66
0.68
V
ISENSE
Sense Pins Bias Current
(Each Channel); VSENSE1,2 = 3.3V
l
±1
±2
A
ITK/SS1,2
Soft-Start Charge Current
VTK/SS1,2 = 0V
l
1.0
1.25
1.5
A
VRUN1,2
RUN Pin On Threshold
VRUN1, VRUN2 Rising
l
1.1
1.22
1.35
V
VRUN1,2(HYS) RUN Pin On Hysteresis
80
mV
VSENSE(MAX) Maximum Current Sense Threshold,
0°C to 85°C (Note 2)
VFB1,2 = 0.5V, VSENSE1,2 = 3.3V, ILIM = 0V
VFB1,2 = 0.5V, VSENSE1,2 = 3.3V, ILIM = Float
VFB1,2 = 0.5V, VSENSE1,2 = 3.3V, ILIM = INTVCC
l
25
45
68
30
50
75
35
55
82
mV
Maximum Current Sense Threshold,
–40°C to 125°C (Note 2)
VFB1,2 = 0.5V, VSENSE1,2 = 3.3V, ILIM = 0V
VFB1,2 = 0.5V, VSENSE1,2 = 3.3V, ILIM = Float
VFB1,2 = 0.5V, VSENSE1,2 = 3.3V, ILIM = INTVCC
VFB1,2 = 0.5V, VSENSE1,2 = 3.3V, LTC3869IGN-2
l
23
43
68
40
30
50
75
50
37
57
82
60
mV
VMISMATCH Channel to Channel Current Sense
Mismatch Voltage of VSENSE(MAX)
ILIM = Float
2
mV
TG1, 2 tr
TG1, 2 tf
TG Transition Time:
Rise Time
Fall Time
(Note 8)
CLOAD = 3300pF
25
ns
BG1, 2 tr
BG1, 2 tf
BG Transition Time:
Rise Time
Fall Time
(Note 8)
CLOAD = 3300pF
25
ns
TG/BG t1D
Top Gate Off to Bottom Gate On Delay
Synchronous Switch-On Delay Time
CLOAD = 3300pF Each Driver (Note 6)
30
ns
BG/TG t2D
Bottom Gate Off to Top Gate On Delay
Top Switch-On Delay Time
CLOAD = 3300pF Each Driver (Note 6)
30
ns
tON(MIN)
Minimum On-Time
(Note 7)
90
ns
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating
junction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = 15V, VRUN1,2 = 5V unless otherwise noted.
相關(guān)PDF資料
PDF描述
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LTC3869EUFD#PBF SWITCHING CONTROLLER, PQCC28
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