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LTM4601AHV
PIN FUNCTIONS
(See Package Description for Pin Assignment)
COMP (Pin A11): Current Control Threshold and Error
Amplifier Compensation Point. The current comparator
threshold increases with this control voltage. The voltage
ranges from 0V to 2.4V with 0.7V corresponding to zero
sense voltage (zero current).
PGOOD (Pins G12, F11): Output Voltage Power Good
Indicator. Open-drain logic output that is pulled to ground
when the output voltage is not within ±10% of the regula-
tion point, after a 25μs power bad mask timer expires.
RUN (Pin A10): Run Control Pin. A voltage above 1.9V
will turn on the module, and when below 1V, will turn
SIMPLIFIED BLOCK DIAGRAM
off the module. A programmable UVLO function can be
accomplished by connecting to a resistor divider from
V IN to ground. See Figure 1. This pin has a 5.1V Zener to
ground. Maximum pin voltage is 5V. Limit current into the
RUN pin to less than 1mA.
V OUT_LCL (Pin L12): V OUT connects directly to this pin to
bypass the remote sense amplifier, or DIFFV OUT connects
to this pin when the remote sense amplifier is used.
MTP1, MTP2, MPT3 (Pins C10, D10, D11 ): Extra Mount-
ing Pads. These pads must be left floating (electrical open
circuit) and are used for enhanced solder joint strength.
UVLO
FUNCTION
V IN
R1
R2
V OUT_LCL
>1.9V = ON
<1V = OFF
MAX = 5V RUN
PGOOD
COMP
1M
V OUT
5.1V
ZENER
1.5μF
+
C IN
V IN
4.5V TO 28V
60.4k
INTERNAL
COMP
SGND
MARG1
MARG0
SGND
POWER CONTROL
Q1
0.47μH
22μF
V OUT
2.5V
12A
R SET
19.1k
V FB
f SET
50k
50k
Q2
C OUT
+
39.2k
PGND
C SS
MPGM
TRACK/SS
PLLIN
4.7μF
50k
10k
INTV CC
10k
10k
V OSNS–
V OSNS+
INTV CC
DRV CC
Figure 1. Simplified LTM4601AHV Block Diagram
10k
DIFFV OUT
4601AHV F01
8
For more information www.linear.com/LTM4601AHV
4601ahvfc
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