参数资料
型号: LTC3604IUD#PBF
厂商: Linear Technology
文件页数: 3/24页
文件大小: 0K
描述: IC REG BUCK SYNC 2.5A 16QFN
标准包装: 121
类型: 降压(降压)
输出数: 1
输入电压: 3.6 V ~ 15 V
PWM 型: 电流模式,混合
频率 - 开关: 800kHz ~ 4MHz
电流 - 输出: 2.5A
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: 16-WFQFN 裸露焊盘
包装: 管件
供应商设备封装: 16-QFN-EP(3x3)
LTC3604
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
junction temperature range, otherwise speci?cations are at T J = 25°C. V VIN = 12V, unless otherwise speci?ed.
SYMBOL
V VIN
PARAMETER
Input Supply Range
CONDITIONS
l
MIN
3.6
TYP
MAX
15
UNITS
V
I Q
Input DC Supply Current
Forced Continuous Operation
Sleep Current
Shutdown
MODE = 0V
MODE = INTV CC , V FB > 0.6V
RUN = 0V
700
300
14
1000
500
25
μA
μA
μA
V FB
Feedback Reference Voltage
l
0.594
0.600
0.606
V
Δ V LINEREG
Δ V LOADREG
I FB
g m(EA)
t ON(MIN)
Reference Voltage Line Regulation
Output Voltage Load Regulation
Feedback Pin Input Current
Error Ampli?er Transconductance
Minimum On-Time
V VIN = 3.6V to 15V
ITH = 0.6V to 1.6V
V FB = 0.6V
ITH = 1.2V
V ON = 1V, V IN = 4V
0.01
0.1
2.0
20
±30
%/V
%
nA
mS
ns
t OFF(MIN)
I LIM
Minimum Off-Time
Valley Switch Current Limit
V IN = 6V
2.6
40
3.4
60
4.3
ns
A
f OSC
Oscillator Frequency
V RT = INTV CC
R RT = 160k
R RT = 80k
1.4
1.7
3.4
2
2
4
2.6
2.3
4.6
MHz
MHz
MHz
R DS(ON)
Top Switch On-Resistance
Bottom Switch On-Resistance
130
100
V VIN(OV)
V INTVCC
V IN Overvoltage Lockout Threshold
INTV CC Voltage
V IN Rising
V IN Falling
3.6V < V IN < 15V
l
l
16.8
15.8
3.13
17.5
16.5
3.3
18
17
3.45
V
V
V
Δ INTV CC
INTV CC Load Regulation (Note 4)
I INTVCC = 0mA to 20mA
0.6
%
V UVLO
INTV CC Undervoltage Lockout
Threshold
INTV CC Rising, V IN = INTV CC
INTV CC Falling, V IN = INTV CC
2.75
2.45
2.9
V
V
V RUN
I RUN(LKG)
V FB_GB
RUN Threshold
RUN Leakage Current
PGOOD Good-to-Bad Threshold
RUN Rising
RUN Falling
V VIN = 15V
FB Rising
l
l
1.21
0.97
1.25
1.0
0
8
1.29
1.03
±3
10
V
V
μA
%
FB Falling
–8
–10
%
V FB_BG
PGOOD Bad-to-Good Threshold
FB Rising
FB Falling
–3
3
–5
5
%
%
t PGOOD
R PGOOD
Power Good Filter Time
PGOOD Pull-Down Resistance
10mA Load
20
40
15
μs
Ω
I SW(LKG)
t SS
Switch Leakage Current
Internal Soft-Start Time
V RUN = 0V
V FB from 10% to 90% Full Scale
0.01
400
1
700
μA
μs
V FB_TRACK
TRACK Pin
TRACK = 0.3V
0.28
0.3
0.315
mV
I TRACK
TRACK Pull-Up Current
1.4
μA
V MODE/SYNC
I MODE
MODE Threshold Voltage
SYNC Threshold Voltage
MODE Input Current
MODE V IH
MODE V IL
SYNC V IH
MODE = 0V
l
l
l
1.0
0.95
–1.5
0.4
V
V
V
μA
MODE = INTV CC
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC3604E is guaranteed to meet performance speci?cations
from 0°C to 85°C. Speci?cations over the –40°C to 125°C operating
1.5
junction temperature range are assured by design, characterization, and
correlation with statistical process controls. The LTC3604I is guaranteed
over the full –40°C to 125°C operating junction temperature range. The
maximum ambient temperature is determined by speci?c operating
conditions in conjunction with board layout, the rated package thermal
resistance and other environmental factors.
μA
3604f
3
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