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LP8754 Datasheet(PDF) 24 Page - Texas Instruments

Part # LP8754
Description  LP8754 Multi-Phase Six-Core Step-Down Converter
PDF  52 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

LP8754 Datasheet(HTML) 24 Page - Texas Instruments

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Yes
INT Requested
If THSD low then enable
power outputs
TEMP[1:0] = 0b11
Power Outputs Disabled
TEMP[1:0] = 0b10
TEMP[1:0] = 0b01
TEMP[1:0] = 0b00
Tj > 85°C
Yes
INT Requested
No
Tj < 75°C
No
Tj > 120°C
No
Tj > 150°C
Tj < 110°C
No
Tj < 125°C
No
Read FLAGS_0
INT Released
Read FLAGS_0
INT Released
Read FLAGS_0
Yes
INT Requested
T_WARNING Asserted
Yes
INT Requested
THSD Asserted
Yes
INT Requested
Clear THSD
E\ZULWLQJ¶0'
Read FLAGS_0
INT Released
THSD De-asserted
Clear T_WARNING
E\ZULWLQJ¶0'
INT by T_WARNING
released
Yes
INT Requested
INT by change in
TEMP released
No
LP8754
SNVS861A – FEBRUARY 2014 – REVISED AUGUST 2014
www.ti.com
Note that INT is asserted whenever any of the thermal thresholds is crossed, if unmasked. Note also the 10°C
Hysteresis on the TJ Thresholds.
Figure 17. Thermal Warnings and Thermal Shutdown Flow
7.4 Device Functional Modes
SHUTDOWN: All switch, reference, control and bias circuitry of the LP8754 are turned off. The main battery
supply voltage is high enough to start the buck power-up sequence but VVIOSYS and NRST are
LOW.
STANDBY: Setting VVIOSYS HIGH enables standby-operation. All registers can be read or written by the system
master via the system serial interface. Recovery from UVLO, TSD, or OVP event also leads to
standby.
ACTIVE:
Regulated DC/DC converters are on or can be enabled with full current capability. In this mode, all
features and control registers are available via the system serial bus and via DVS interface.
LOW-POWER: At light loads (less than ~30 mA), and when the load does not require highest level of transient
performance, the device enters automatically Low-Power mode. In this mode the part operates at
low Iq. Conditions entering and exiting Low-Power mode are shown in Figure 18.
24
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Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: LP8754



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