Pin settings
Table 1. Pin description
N°
Pin
Function
L6713A
18
LTB
Load Transient Boost Pin.
Internally fixed at 1V, connecting a R
LTB
- C
LTB
vs. VOUT allows to enable the
Load Transient Boost Technology
™
: as soon as the device detects a transient
load it turns on all the PHASEs at the same time. Short to SGND to disable the
function.
All the internal references are referred to this pin. Connect to the PCB Signal
Ground.
It manages OVP and UVP protections and PGOOD (when applicable).
100µA constant current
(I
OFFSET
,
See Table 4
)
is sunk by VSEN pin in order to
generate a positive offset in according to the R
OFFSET
resistor between VSEN
pin and VOUT.
for details.
A current proportional to the total current read is sourced from this pin
according to the Current Reading Gain.
Short to FB to implement Droop Function or Short to SGND to disable the
function.Connecting to SGND through a resistor and filtering with a capacitor,
the current info can be used for other purposes.
Error Amplifier Inverting Input. Connect with a resistor R
FB
vs. VSEN and with
an R
F
- C
F
vs. COMP.
Error Amplifier Output. Connect with an R
F
- C
F
vs. FB.
The device cannot be disabled by pulling down this pin.
Not internally connected.
Not internally connected.
Channel 2 Current Sense Positive Input.
Connect through an R-C filter to the phase-side of the channel 2 inductor.
Short to SGND or to V
OUT
when using 2 Phase operation.
for proper layout of this connection.
Channel 2 Current Sense Negative Input.
Connect through a Rg resistor to the output-side of the channel 2 inductor.
Leave floating when using 2 Phase operation.
for proper layout of this connection.
Channel 3 Current Sense Positive Input.
Connect through an R-C filter to the phase-side of the channel 3 inductor.
for proper layout of this connection.
Channel 3 Current Sense Negative Input.
Connect through a Rg resistor to the output-side of the channel 3 inductor.
for proper layout of this connection.
Channel 1 Current Sense Positive Input.
Connect through an R-C filter to the phase-side of the channel 1 inductor.
for proper layout of this connection.
Channel 1 Current Sense Negative Input.
Connect through a Rg resistor to the output-side of the channel 1 inductor.
for proper layout of this connection.
19
SGND
20
VSEN
21
DROOP
22
23
24
25
FB
COMP
N.C.
N.C.
26
CS2+
27
CS2-
28
CS3+
29
CS3-
30
CS1+
31
CS1-
8/64
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
