參數(shù)資料
型號(hào)： LTC3616IUDD#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： 13.5 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PQCC24
封裝： 3 X 5 MM, LEAD FREE, PLASTIC, QFN-24
文件頁數(shù)： 22/28頁
文件大小： 490K
代理商： LTC3616IUDD#TRPBF
LTC3616
3
3616fa
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating junction
temperature range, otherwise specifications are at TJ = 25°C. VIN = 3.3V, RT/SYNC = SVIN unless otherwise specified (Notes 1, 2, 11).
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN
Operating Voltage Range
l
2.25
5.5
V
VUVLO
Undervoltage Lockout Threshold
SVIN Ramping Down
SVIN Ramping Up
l
1.7
2.25
V
VFB
Feedback Voltage Internal Reference
(Note 3) VTRACK = SVIN, VDDR = 0V
0°C < TJ < 85°C
–40°C < TJ < 125°C
l
0.594
0.591
0.6
0.606
0.609
V
Feedback Voltage External Reference
(Note 7)
(Note 3) VTRACK = 0.3V, VDDR = SVIN
0.275
0.300
0.325
V
(Note 3) VTRACK = 0.5V, VDDR = SVIN
0.475
0.500
0.525
V
IFB
Feedback Input Current
VFB = 0.6V
l
±30
nA
VLINEREG
Line Regulation
SVIN = PVIN = 2.25V to 5.5V
(Notes 3, 4) TRACK/SS = SVIN
l
0.2
%/V
VLOADREG
Load Regulation
ITH from 0.5V to 0.9V (Notes 3, 4)
VITH = SVIN (Note 5)
0.25
2.6
%
IS
Active Mode
VFB = 0.5V, VMODE = SVIN (Note 6)
1100
A
Sleep Mode
VFB = 0.7V, VMODE = 0V, ITH = SVIN
(Note 5)
75
100
A
VFB = 0.7V, VMODE = 0V (Note 4)
130
175
A
Shutdown
SVIN = PVIN = 5.5V, VRUN = 0V
0.1
1
A
RDS(ON)
Top Switch On-Resistance
PVIN = 3.3V (Note 10)
35
mΩ
Bottom Switch On-Resistance
PVIN = 3.3V (Note 10)
25
mΩ
ILIM
Top Switch Current Limit
Sourcing (Note 8), VFB = 0.5V
Duty Cycle <35%
Duty Cycle = 100%
10.5
8
12
13.5
A
Bottom Switch Current Limit
Sinking (Note 8), VFB = 0.7V,
Forced Continuous Mode
–6
–8
–11
A
gm(EA)
Error Amplifier Transconductance
–5A < IITH < 5A (Note 4)
200
S
IEAO
Error Amplifier Maximum Output
Current
(Note 4)
±30
A
tSS
Internal Soft-Start Time
VFB from 0.06V to 0.54V,
TRACK/SS = SVIN
0.65
1.2
1.9
ms
VTRACK/SS
Enable Internal Soft-Start
(Note 7 )
0.62
V
tTRACK/SS_DIS
Soft-Start Discharge Time at Start-Up
60
s
RON(TRACK/SS_DIS) TRACK/SS Pull-Down Resistor at
Start-Up
200
Ω
fOSC
Oscillator Frequency
RT/SYNC = 370k
l
0.8
1
1.2
MHz
Internal Oscillator Frequency
VRT/SYNC = SVIN
l
1.8
2.25
2.7
MHz
fSYNC
Synchronization Frequency Range
0.3
4
MHz
VRT/SYNC
SYNC Level High
1.2
V
SYNC Level Low
.
0.3
V
ISW(LKG)
Switch Leakage Current
SVIN = PVIN = 5.5V, VRUN = 0V
0.1
1
A
VDDR
DDR Option Enable Voltage
SVIN – 0.3
V
VMODE
(Note 9)
Internal Burst Mode Operation
0.3
V
Pulse-Skipping Mode
SVIN – 0.3
V
Forced Continuous Mode
1.1
SVIN 0.58
V
External Burst Mode Operation
0.45
0.8
V
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