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LCVT Datasheet(PDF) 3 Page - Linear Technology

No. de pieza LCVT
Descripción Electrónicos  36V, 2A, 2.8MHz Step-Down Switching Regulator
PDF  24 Pages
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Fabricante Electrónico  LINER [Linear Technology]
Página de inicio  http://www.linear.com
Logo LINER - Linear Technology

LCVT Datasheet(HTML) 3 Page - Linear Technology

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LT3684
3
3684f
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Minimum Bias Voltage
2.7
3
V
Feedback Voltage
●
1.25
1.24
1.265
1.265
1.28
1.29
V
V
FB Pin Bias Current (Note 3)
●
30
100
nA
FB Voltage Line Regulation
4V < VIN < 34V
0.002
0.02
%/V
Error Amp gm
330
µMho
Error Amp Gain
1000
VC Source Current
75
µA
VC Sink Current
100
µA
VC Pin to Switch Current Gain
3.5
A/V
VC Clamp Voltage
2V
Switching Frequency
RT = 8.66k
RT = 29.4k
RT = 187k
2.7
1.25
250
3.0
1.4
300
3.3
1.55
350
MHz
MHz
kHz
Minimum Switch Off-Time
●
100
150
nS
Switch Current Limit
Duty Cycle = 5%
3.1
3.6
4.0
A
Switch VCESAT
ISW = 2A
360
mV
Boost Schottky Reverse Leakage
VSW = 10V, VBIAS = 0V
0.02
2
µA
Minimum Boost Voltage (Note 4)
●
1.6
2.1
V
BOOST Pin Current
ISW = 1A
18
30
mA
RUN/SS Pin Current
VRUN/SS = 2.5V
5
10
µA
RUN/SS Input Voltage High
2.5
V
RUN/SS Input Voltage Low
0.2
V
PG Threshold Offset from Feedback Voltage
VFB Rising
100
mV
PG Hysteresis
10
mV
PG Leakage
VPG = 5V
0.1
1
µA
PG Sink Current
VPG = 0.4V
●
100
300
µA
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 LT3684E is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls. The LT3684I specifications are
guaranteed over the –40°C to 125°C temperature range.
Note 3: Bias current measured in regulation. Bias current flows into the FB
pin.
Note 4: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the switch.
The
● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 10V, VRUNS/SS = 10V VBOOST = 15V, VBIAS = 3.3V unless otherwise
noted. (Note 2)
ELECTRICAL CHARACTERISTICS



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