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LTM4618
ELECTRICAL CHARACTERISTICS
The l denotes the speci?cations which apply over the full internal
operating temperature range, otherwise speci?cations are at T A = 25°C (Note 2), V IN = 12V, per typical application in Figure 21.
SYMBOL
f HIGH
PARAMETER
Highest Frequency
CONDITIONS
V FREQ ≥ 2.4V, INTV CC
MIN
700
TYP
780
MAX
860
UNITS
kHz
V IH(MODE/PLLIN)
V IL(MODE/PLLIN)
R MODE/PLLIN
I FREQ
Synchronous Clock High Level
Synchronous Clock Low Level
MODE/PLLIN Input Resistance
FREQ Pin
2.0
250
0.8
V
V
kΩ
Sinking Current
Sourcing Current
f MODE/PLLIN > f OSC
f MODE/PLLIN < f OSC
–13
13
μA
μA
V RUN
RUN Pin On Threshold
RUN Rising
1.1
1.22
1.35
V
V RUN Hysteresis
RUN Pin Hysteresis
120
mV
R FBHI
Resistor Between V OUT and V FB Pins
60.1
60.4
60.7
kΩ
PGOOD Output
V PGL
I PGOOD
PGOOD Voltage Low
PGOOD Leakage Current
I PGOOD = 2mA
V PGOOD = 5V
0.1
0.3
±2
V
μA
V PG
PGOOD Trip Level
V FB with Respect to Set Regulated Voltage
V FB Ramping Negative
V FB Ramping Positive
–5
5
–7.5
7.5
–10
10
%
%
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 LTM4618 is tested under pulsed load conditions such that
T J ≈ T A . The LTM4618E is guaranteed to meet performance speci?cations
over the 0°C to 125°C internal operating temperature range. Speci?cations
over the full –40°C to 125°C internal operating temperature range are
assured by design, characterization and correlation with statistical process
controls. The LTM4618I is guaranteed to meet speci?cations over the full
internal operating temperature range. Note that the maximum ambient
temperature consistent with these speci?cations is determined by speci?c
operating conditions in conjunction with board layout, the rated package
thermal resistance and other environmental factors.
Note 3: 100% tested at wafer level only.
Note 4: See Output Current Derating curves for different V IN , V OUT and T A .
Note 5: For input voltages less than 6V, tie the V IN , INTV CC and EXTV CC
together. The LTM4618 will operate from 5V inputs, but V IN , INTV CC and
EXTV CC need to be tied together.
4618fa
4
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