參數(shù)資料
型號(hào)： LTC3880IUJ-1#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： 0.1 A DUAL SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PQCC40
封裝： 6 X 6 MM, LEAD FREE, PLASTIC, WJJD-2, QFN-40
文件頁(yè)數(shù)： 58/112頁(yè)
文件大小： 2182K
代理商： LTC3880IUJ-1#TRPBF
LTC3880/LTC3880-1
5
3880fa
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at TA = 25°C. (Note 2) VIN = 12V, VRUN0,1 = 3.3V, fSYNC = 500kHz (externally
driven) unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Input Voltage
VIN
Input Voltage Range
(Note 12)
l
4.5
24
V
IQ
Input Voltage Supply Current
Normal Operation
(Note 14)
VRUN0,1 = 3.3V, No Caps on TG and BG
VRUN0,1 = 0V
25
20
mA
VUVLO
Undervoltage Lockout Threshold
when VIN > 4.3V
VINTVCC/VEXTVCC Falling
VINTVCC/VEXTVCC Rising
3.7
3.95
V
Control Loop
VOUT1R0
Full-Scale Voltage Range 0
Set Point Accuracy (0.6V to 5V)
Resolution
LSB Step Size
VOUT_COMMAND(1) = 5.500V (Note 9)
l
5.4
–0.5
12
1.375
5.6
0.5
V
%
Bits
mV
VOUT1R1
Full-Scale Voltage Range 1
Set Point Accuracy (0.6V to 2.5V)
Resolution
LSB Step Size
VOUT_COMMAND(1) = 2.75V (Note 9)
l
2.7
–0.5
12
0.6875
2.8
0.5
V
%
Bits
mV
VOUT0R0
Full-Scale Voltage Range 0
Set Point Accuracy (0.6V to 4.096V)
Resolution
LSB Step Size
VOUT_COMMAND(0) = 4.095V (Note 9)
l
4.0
–0.5
12
1.375
4.2
0.5
V
%
Bits
mV
VOUT0R1
Full-Scale Voltage Range 1
Set Point Accuracy (0.6V to 2.5V)
Resolution
LSB Step Size
VOUT_COMMAND(0) = 2.75V (Note 9)
l
2.7
–0.5
12
0.6875
2.8
0.5
V
%
Bits
mV
VLINEREG
Line Regulation
6V < VIN < 24V
l
±0.02
%/V
VLOADREG
Load Regulation
VITH = 1.35V – 0.7V
VITH = 1.35V – 2.0V
l
0.01
–0.01
0.1
–0.1
%
gm0,1
Error Amplifier gm
ITH0,1 =1.22V
3
mmho
IISENSE0,1
Input Current
VISENSE = 5.5V
l
±1
±10
A
VSENSERIN0
VSENSE Input Resistance to Ground
0V ≤ VPIN ≤ 5.5V
41
kΩ
VSENSERIN1
VSENSE Input Resistance to Ground
0V ≤ VPIN ≤ 5.5V
37
kΩ
VIlLIMIT
Resolution
3
bits
VILIMMAX
Hi Range
Lo Range
l
68
44
75
50
82
56
mV
VILMMIN
Hi Range
Lo Range
37.5
25
mV
Gate Drivers
TG0,1
tr
tf
TG Transition Time:
Rise Time
Fall Time
(Note 4)
CLOAD = 3300pF
30
ns
BG0,1
tr
tf
BG Transition Time:
Rise Time
Fall Time
(Note 4)
CLOAD = 3300pF
30
ns
TG/BG t1D
Top Gate Off to Bottom Gate On Delay Time
(Note 4) CLOAD = 3300pF Each Driver
30
ns
BG/TG t2D
Bottom Gate Off to Top Gate On Delay Time
(Note 4) CLOAD = 3300pF Each Driver
30
ns
tON(MIN)
Minimum On-Time
90
ns
OV/UV Output Voltage Supervisor Channel 0
N
Resolution
8
Bits
V0RANGE0
Voltage Monitoring Range
Range Value = 0
1
4.096
V
V0RANGE1
Voltage Monitoring Range
Range Value = 1
0.5
2.7
V
V0OUSTP0
Threshold Programming Step
Range Value = 0
22
mV
V0OUSTP1
Threshold Programming Step
Range Value = 1
11
mV
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