Datasheet

LTM4601AHV
8
4601ahvfc
For more information www.linear.com/LTM4601AHV
Figure 1. Simplified LTM4601AHV Block Diagram
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
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
cir
cuit) and are used for enhanced solder joint strength.
(See Package Description for Pin Assignment)
pin FuncTions
siMpliFieD block DiagraM
+
INTERNAL
COMP
UVLO
FUNCTION
V
IN
SGND
COMP
PGOOD
RUN
V
OUT_LCL
>1.9V = ON
<1V = OFF
MAX = 5V
MARG1
MARG0
MPGM
PLLIN
C
SS
INTV
CC
DRV
CC
TRACK/SS
V
FB
f
SET
50k
39.2k
R
SET
19.1k
50k
60.4k
V
OUT
1M
5.1V
ZENER
POWER CONTROL
Q1
V
IN
4.5V TO 28V
V
OUT
2.5V
12A
Q2
10k
0.47µH
10k
10k
50k
10k
INTV
CC
+
–
22µF
1.5µF
C
IN
+
C
OUT
PGND
V
OSNS
–
V
OSNS
+
DIFFV
OUT
4601AHV F01
4.7µF
SGND
R1
R2