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LTM4653 датащи(PDF) 4 Page - Linear Technology

номер детали LTM4653
подробное описание детали  EN55022B Compliant 58V, 4A Step-Down DC/DC 關Module Regulator
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производитель  LINER [Linear Technology]
домашняя страница  http://www.linear.com
Logo LINER - Linear Technology

LTM4653 датащи(HTML) 4 Page - Linear Technology

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LTM4653
4
Rev 0
For more information www.analog.com
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 = 57.6kΩ, fSW = 1.5MHz (CLKIN driven with 1.2MHz clock signal) unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
VRUN
RUN Turn-On/-Off Thresholds
RUN Input Turn-On Threshold, RUN Rising
RUN Hysteresis
l
1.08
1.2
130
1.32
V
mV
IRUN
RUN Leakage Current
RUN = 3.3V
l
0.1
50
nA
Oscillator and Phase-Locked Loop (PLL)
fOSC
Oscillator Frequency Accuracy
VIN = 12V, ISETa = 5V, and:
fSET Open Circuit
RfSET = 57.6kΩ (See fs Specification)
l
360
400
1.95
440
kHz
MHz
fSYNC
PLL Synchronization Capture Range
VIN = 12V, ISETa = 5V, CLKIN Driven with a GND-
Referred Clock Toggling from 0.4V to 1.2V and Having
a Clock Duty Cycle:
From 10% to 90%; fSET Open Circuit
From 40% to 60%; RfSET = 57.6kΩ
250
1.3
550
3
kHz
MHz
VCLKIN
CLKIN Input Threshold
VCLKIN Rising
VCLKIN Falling
1.2
0.4
V
V
ICLKIN
CLKIN Input Current
VCLKIN = 5V
VCLKIN = 0V
–20
230
–5
500
μA
μA
Power Good Feedback Input and Power Good Output
OVPGDFB
Output Overvoltage PGOOD Upper
Threshold
PGDFB Rising
l
620
645
675
mV
UVPGDFB
Output Undervoltage PGOOD Lower
Threshold
PGDFB Falling
l
525
555
580
mV
∆VPGDFB
PGOOD Hysteresis
PGDFB Returning
8
mV
RPGDFB
Resistor Between PGDFB and SGND
4.94
4.99
5.04
RPGOOD
PGOOD Pull-Down Resistance
VPGOOD = 0.1V, VPGDFB < UVPGDFB or
VPGDFB > OVPGDFB
700
1500
Ω
IPGOOD(LEAK)
PGOOD Leakage Current
VPGOOD = 3.3V, UVPGDFB < VPGDFB < OVPGDFB
0.1
1
μA
tPGOOD(DELAY)
PGOOD Delay
PGOOD Low to High (Note 4)
PGOOD High to Low (Note 4)
16/fSW(HZ)
64/fSW(HZ)
s
s
Current Monitor and Input Voltage Regulation Pins
hIMONa
IOUT/IIMONa
Ratio of VOUT Output Current to IIMONa Current, IOUT = 4A l
36
40
44
k
IOS(IMON)
IMONa Offset Current
IIMONa at IOUT = 0A
–5
5
µA
IMONb Resistor
Resistor Between IMONb and SGND
9.8
10
10.2
VIMONa
IMONa Servo Voltage
IMONa Voltage During Output Current Regulation
l
1.9
2.0
2.1
V
VVINREG
VINREG Servo Voltage
VINREG Voltage During Output Current Regulation
l
1.8
2.0
2.2
V
IVINREG
VINREG Leakage Current
VINREG = 2V
1
nA
INTVCC Regulator
VINTVCC
Channel Internal VCC Voltage, No
INTVCC Loading (IINTVCC = 0mA)
3.6V ≤ SVIN ≤ 58V, EXTVCC = Open Circuit
5V ≤ SVIN ≤ 58V, 3.2V ≤ EXTVCC ≤ 26.5V
3.15
2.85
3.4
3.0
3.65
3.15
V
V
VEXTVCC(TH)
EXTVCC Switchover Voltage
(Note 4)
3.15
V
∆VINTVCC(LOAD)/
VINTVCC
INTVCC Load Regulation
0mA ≤ IINTVCC ≤ 30mA
–2
0.5
2
%
ELECTRICAL CHARACTERISTICS


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