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L6758A Datasheet(PDF) 8 Page - STMicroelectronics

No. de pieza L6758A
Descripción Electrónicos  DPM - dynamic phase management
Download  42 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6758A Datasheet(HTML) 8 Page - STMicroelectronics

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Pin description and connection diagrams
L6758A
8/42
DocID023298 Rev 2
22
SCOMP /
TMAX
Error amplifier output.
Connect with an (R
SF
- C
SF
)// C
SP
to SFB. The device cannot be disabled
by pulling low this pin. Connect proper resistor R
TMAX
to GND to define
TMAX register.
23
SREF
The reference used for the regulation of the single-phase section is
available on this pin with -100 mV offset. Connect through an R
SREF
-
C
SREF
to SRGND to optimize DVID transitions. Connect through an R
SOS
resistor to the SFB pin to implement small positive offset to the regulation.
24
VCC5
Main IC power supply.
Operative voltage is 5 V ±5%. Filter with 1
μF MLCC to GND (typ.).
25
SOSC
Oscillator pin.
It allows the programming of the switching frequency F
SSW
for the single-
phase section. The pin is internally set to 1.0 V, frequency for single-phase
is programmed according to the resistor connected to GND or VCC with a
gain of 10 kHz/μA. Leaving the pin floating programs a switching
frequency of 200 kHz. See
Section 10 for details.
26
IMAX /
SIMAX
Connect a resistor divider to GND/VCC5 in order to define the IMAX
register for both single-phase and multi-phase sections. See
Table 8,
Table 10 and Section 6 for details.
27
BOOT /
ADDR
Connect a resistor divider to GND/VCC5 in order to define BOOT register
and SVI address. See
Table 8 and Section 6 for details.
28
STM
Thermal monitor sensor.
Connect with proper network embedding NTC to the single-phase power
section. The IC senses the power section temperature and uses the
information to define the VR_HOT signal and temperature zone register.
By programming proper STCOMP gain, the IC also implements load-line
thermal compensation for the single-phase section. Short to GND if not
used. See
Section 8 for details.
29
STCOMP
Thermal monitor sensor gain.
Connect proper resistor divider between VCC5 and GND to define the
gain to apply to the signal sensed by ST to implement thermal
compensation for the single-phase section. Short to GND to disable
thermal compensation for single-phase. See
Section 8 for details.
30
TCOMP
Thermal monitor sensor gain.
Connect proper resistor divider between VCC5 and GND to define the
gain to apply to the signal sensed by TM to implement thermal
compensation for the multi-phase section. Short to GND to disable
thermal compensation for multi-phase. See
Section 8 for details.
31
TM
Thermal monitor sensor.
Connect with proper network embedding NTC to the multi-phase power
section. The IC senses the power section temperature and uses the
information to define the VR_HOT signal and temperature zone register.
By programming proper TCOMP gain, the IC also implements load-line
thermal compensation for the multi-phase section. Short to GND if not
used. See
Section 8 for details.
Table 2. Pin description (continued)
Pin#
Name
Function


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