LTC3787EUFD 查看數據表（PDF） - Linear Technology
零件编号
产品描述 (功能)
生产厂家
LTC3787EUFD Datasheet PDF : 36 Pages
| |||
LTC3787
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at TA = 25°C, VBIAS = 12V, unless otherwise noted (Note 2).
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Main Control Loop
VBIAS
Chip Bias Voltage Operating Range
4.5
38
V
VFB
IFB
VREFLNREG
VLOADREG
gm
IQ
UVLO
VRUN
VRUNHYS
IRUNHYS
IRUN
ISS
VSENSE1,2(MAX)
VSENSE(MATCH)
VSENSE(CM)
ISENSE1,2+
ISENSE1,2–
tr(TG1,2)
tf(TG1,2)
tr(BG1,2)
tr(BG1,2)
RUP(TG1,2)
RDN(TG1,2)
RUP(TG1,2)
RDN(TG1,2)
tD(TG/BG)
tD(BG/TG)
DFBG1,2(MAX)
tON(MIN)
Regulated Feedback Voltage
Feedback Current
Reference Line Voltage Regulation
Output Voltage Load Regulation
(Note 4)
Error Amplifier Transconductance
Input DC Supply Current
Pulse-Skipping or Forced Continuous Mode
Sleep Mode
Shutdown
INTVCC Undervoltage Lockout Thresholds
RUN Pin ON Threshold
RUN Pin Hysteresis
RUN Pin Hysteresis Current
RUN Pin Current
Soft-Start Charge Current
Maximum Current Sense Threshold
Matching Between VSENSE1(MAX) and
VSENSE2(MAX)
SENSE Pins Common Mode Range (BOOST
Converter Input Supply Voltage VIN)
SENSE+ Pin Current
SENSE– Pin Current
Top Gate Rise Time
Top Gate Fall Time
Bottom Gate Rise Time
Bottom Gate Fall Time
Top Gate Pull-Up Resistance
Top Gate Pull-Down Resistance
Bottom Gate Pull-Up Resistance
Bottom Gate Pull-Down Resistance
Top Gate Off to Bottom Gate On Switch-On
Delay Time
Bottom Gate Off to Top Gate On Switch-On
Delay Time
Maximum BG Duty Factor
Minimum BG On-Time
ITH = 1.2V (Note 4)
(Note 4)
VBIAS = 6V to 38V
Measured in Servo Loop;
ΔITH Voltage = 1.2V to 0.7V
Measured in Servo Loop;
ΔITH Voltage = 1.2V to 2V
ITH = 1.2V
(Note 5)
RUN = 5V; VFB = 1.25V (No Load)
RUN = 5V; VFB = 1.25V (No Load)
RUN = 0V
VINTVCC Ramping Up
VINTVCC Ramping Down
VRUN Rising
VRUN > 1.28V
VRUN < 1.28V
VSS = GND
VFB = 1.1V, ILIM = INTVCC
VFB = 1.1V, ILIM = Float
VFB = 1.1V, ILIM = GND
VFB = 1.1V, ILIM = INTVCC
VFB = 1.1V, ILIM = Float
VFB = 1.1V, ILIM = GND
VFB = 1.1V, ILIM = Float
VFB = 1.1V, ILIM = Float
CLOAD = 3300pF (Note 6)
CLOAD = 3300pF (Note 6)
CLOAD = 3300pF (Note 6)
CLOAD = 3300pF (Note 6)
CLOAD = 3300pF (Each Driver)
CLOAD = 3300pF (Each Driver)
(Note 7)
l 1.188 1.200 1.212
V
±5
±50
nA
0.002 0.02
%/V
l
0.01
0.1
%
l
–0.01 –0.1
%
2
mmho
1.2
135
300
8
20
l
4.1
4.3
l 3.6
3.8
l 1.18 1.28 1.38
100
4.5
0.5
7
10
13
l 90
100
110
l 68
75
82
l 42
50
56
l –12
0
12
l –10
0
10
l –9
0
9
2.5
38
200
300
±1
20
20
20
20
1.2
1.2
1.2
1.2
70
70
96
110
mA
μA
μA
V
V
V
mV
μA
μA
μA
mV
mV
mV
mV
mV
mV
V
μA
μA
ns
ns
ns
ns
Ω
Ω
Ω
Ω
ns
ns
%
ns
3787fc
3
Share Link: 