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LTM4653

更新时间: 2023-12-20 18:44:10
品牌 Logo 应用领域
亚德诺 - ADI 稳压器
页数 文件大小 规格书
34页 3470K
描述
符合 EN55022B 标准的 58V 4A 降压直流/直流 μModule 稳压器

LTM4653 数据手册

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LTM4653  
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified internal  
operating temperature range (Note 2). TA = 25°C, Test Circuit, VIN = SVIN = 48V, EXTVCC = 24V, RUN = 3.3V, RISET = 480k,  
RfSET = 57.6k, fSW = 1.5MHz (CLKIN driven with 1.2MHz clock signal), unless otherwise noted.  
SYMBOL  
PARAMETER  
CONDITIONS  
MIN  
TYP MAX UNITS  
l
l
V
RUN Turn-On/-Off Thresholds  
RUN Input Turn-On Threshold, RUN Rising  
RUN Hysteresis  
1.08  
1.2  
1.32  
V
RUN  
130  
mV  
I
RUN Leakage Current  
RUN = 3.3V  
0.1  
50  
nA  
RUN  
Oscillator and Phase-Locked Loop (PLL)  
f
Oscillator Frequency Accuracy  
V
IN  
= 12V, ISETa = 5V, and:  
OSC  
f
Open Circuit  
l
360  
400  
1.95  
440  
kHz  
MHz  
SET  
R
fSET  
= 57.6k (See f Specification)  
s
f
PLL Synchronization Capture Range  
V
= 12V, ISETa = 5V, CLKIN Driven with a GND-  
SYNC  
IN  
Referred Clock Toggling from 0.4V to 1.2V and Having  
a Clock Duty Cycle:  
From 10% to 90%; f Open Circuit  
250  
1.3  
550  
3
kHz  
MHz  
SET  
fSET  
From 40% to 60%; R  
= 57.6k  
V
CLKIN Input Threshold  
CLKIN Input Current  
V
V
Rising  
Falling  
1.2  
V
V
CLKIN  
CLKIN  
CLKIN  
0.4  
I
V
CLKIN  
V
CLKIN  
= 5V  
= 0V  
230  
–5  
500  
μA  
μA  
CLKIN  
–20  
Power Good Feedback Input and Power Good Output  
l
l
OV  
UV  
∆V  
Output Overvoltage PGOOD Upper  
Threshold  
PGDFB Rising  
PGDFB Falling  
PGDFB Returning  
620  
525  
645  
555  
8
675  
580  
mV  
mV  
PGDFB  
Output Undervoltage PGOOD Lower  
Threshold  
PGDFB  
PGOOD Hysteresis  
mV  
kΩ  
Ω
PGDFB  
PGDFB  
R
R
Resistor Between PGDFB and SGND  
PGOOD Pull-Down Resistance  
4.94 4.99 5.04  
700 1500  
V
V
= 0.1V, V  
< UV  
or  
PGOOD  
PGOOD  
PGDFB  
PGDFB  
PGDFB  
PGDFB  
> OV  
I
t
PGOOD Leakage Current  
PGOOD Delay  
V
= 3.3V, UV  
< V  
< OV  
PGDFB  
0.1  
1
μA  
PGOOD(LEAK)  
PGOOD(DELAY)  
PGOOD  
PGDFB  
PGDFB  
PGOOD Low to High (Note 4)  
PGOOD High to Low (Note 4)  
16/f  
s
s
SW(Hz)  
SW(Hz)  
64/f  
Current Monitor and Input Voltage Regulation Pins  
l
h
I
I
/I  
Ratio of V  
Output Current to I  
= 0A  
Current, I = 4A  
OUT  
36  
–5  
40  
10  
44  
5
k
µA  
kΩ  
V
IMONa  
OUT IMONa  
OUT  
IMONa  
I
I
Offset Current  
I
at I  
IMONa OUT  
OS(IMON)  
MONa  
Resistor  
Resistor Between I  
and SGND  
9.8  
1.9  
1.8  
10.2  
2.1  
2.2  
MONb  
MONb  
l
l
V
V
I
Servo Voltage  
MONa  
IMONa Voltage During Output Current Regulation  
VINREG Voltage During Output Current Regulation  
VINREG = 2V  
2.0  
2.0  
1
IMONa  
VINREG  
VINREG  
VINREG Servo Voltage  
V
I
VINREG Leakage Current  
nA  
INTV Regulator  
CC  
V
Channel Internal V Voltage, No  
3.6V ≤ SV ≤ 58V, EXTV = Open Circuit  
3.15  
2.85  
3.4  
3.0  
3.65  
3.15  
V
V
INTVCC  
CC  
IN  
CC  
INTV Loading (I  
= 0mA)  
5V ≤ SV ≤ 58V, 3.2V ≤ EXTV ≤ 26.5V  
CC  
INTVCC  
IN CC  
V
EXTV Switchover Voltage  
(Note 4)  
0mA ≤ I ≤ 30mA  
INTVCC  
3.15  
0.5  
V
EXTVCC(TH)  
CC  
∆V  
V
/
INTV Load Regulation  
–2  
2
%
INTVCC(LOAD)  
INTVCC  
CC  
Rev. B  
4
For more information LTM4653  

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