参数资料
型号: LTC3616IUDD#TRPBF
厂商: Linear Technology
文件页数: 3/28页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 6A 24QFN
标准包装: 2,500
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 0.6 V ~ 5.5 V
输入电压: 2.25 V ~ 5.5 V
PWM 型: 电流模式,混合
频率 - 开关: 300kHz ~ 4MHz
电流 - 输出: 6A
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 24-QFN
包装: 带卷 (TR)
供应商设备封装: 24-QFN(3x5)
LTC3616
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T J = 25°C (Note 2). V IN = 3.3V, RT/SYNC = SV IN unless otherwise specified.
SYMBOL
V IN
PARAMETER
Operating Voltage Range
CONDITIONS
l
MIN
2.25
TYP
MAX
5.5
UNITS
V
V UVLO
Undervoltage Lockout Threshold
SV IN Ramping Down
SV IN Ramping Up
l
l
1.7
2.25
V
V
V FB
I FB
? V LINEREG
Feedback Voltage Internal Reference
Feedback Voltage External Reference
(Note 7)
Feedback Input Current
Line Regulation
(Note 3) V TRACK = SV IN , V DDR = 0V
0°C < T J < 85°C
–40°C < T J < 125°C
–55°C < T J < 150°C
(Note 3) V TRACK = 0.3V, V DDR = SV IN
(Note 3) V TRACK = 0.5V, V DDR = SV IN
V FB = 0.6V
SV IN = PV IN = 2.25V to 5.5V
(Notes 3, 4) TRACK/SS = SV IN
–40°C < T J < 125°C
–55°C < T J < 150°C
l
l
l
l
l
0.594
0.591
0.589
0.275
0.475
0.6
0.300
0.500
0.606
0.609
0.609
0.325
0.525
±30
0.2
0.3
V
V
V
V
V
nA
%/V
%/V
? V LOADREG
I S
Load Regulation
Active Mode
ITH from 0.5V to 0.9V (Notes 3, 4)
V ITH = SV IN (Note 5)
V FB = 0.5V, V MODE = SV IN (Note 6)
1100
0.25
2.6
%
%
μA
Sleep Mode
Shutdown
V FB = 0.7V, V MODE = 0V, ITH = SV IN
(Note 5)
V FB = 0.7V, V MODE = 0V (Note 4)
SV IN = PV IN = 5.5V, V RUN = 0V
75
130
0.1
100
175
1
μA
μA
μA
R DS(ON)
Top Switch On-Resistance
Bottom Switch On-Resistance
PV IN = 3.3V (Note 10)
PV IN = 3.3V (Note 10)
35
25
I LIM
g m(EA)
I EAO
t SS
V TRACK/SS
Top Switch Current Limit
Bottom Switch Current Limit
Error Amplifier Transconductance
Error Amplifier Maximum Output
Current
Internal Soft-Start Time
Enable Internal Soft-Start
Sourcing (Note 8), V FB = 0.5V
Duty Cycle <35%
Duty Cycle = 100%
Sinking (Note 8), V FB = 0.7V,
Forced Continuous Mode
–5μA < I ITH < 5μA (Note 4)
(Note 4)
V FB from 0.06V to 0.54V,
TRACK/SS = SV IN
(Note 7 )
10.5
8
–6
0.65
0.62
12
–8
200
±30
1.2
13.5
–11
1.9
A
A
A
μS
μA
ms
V
t TRACK/SS_DIS
Soft-Start Discharge Time at Start-Up
60
μs
R ON(TRACK/SS_DIS) TRACK/SS Pull-Down Resistor at
Start-Up
200
Ω
f OSC
Oscillator Frequency
Internal Oscillator Frequency
RT/SYNC = 370k
V RT/SYNC = SV IN
l
l
0.8
1.8
1
2.25
1.2
2.7
MHz
MHz
f SYNC
V RT/SYNC
Synchronization Frequency Range
SYNC Level High
SYNC Level Low
0.3
1.2
.
4
0.3
MHz
V
V
I SW(LKG)
V DDR
Switch Leakage Current
DDR Option Enable Voltage
SV IN = PV IN = 5.5V, V RUN = 0V
SV IN – 0.3
0.1
1
μA
V
3
For more information www.linear.com/LTC3616
3616fb
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