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LP875484YFQR Datasheet(PDF) 6 Page - Texas Instruments

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Part # LP875484YFQR
Description  LP8754 Multi-Phase Six-Core Step-Down Converter
Download  53 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LP875484YFQR Datasheet(HTML) 6 Page - Texas Instruments

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LP8754
SNVS861A – FEBRUARY 2014 – REVISED AUGUST 2014
www.ti.com
6.4 Thermal Information
LP8754
THERMAL METRIC(1)
YFQ
UNIT
49 PINS
RθJA
Junction-to-ambient thermal resistance
49.2
RθJCtop
Junction-to-case (top) thermal resistance
0.2
RθJB
Junction-to-board thermal resistance
6.6
°C/W
ψJT
Junction-to-top characterization parameter
2.9
ψJB
Junction-to-board characterization parameter
6.5
RθJCbot
Junction-to-case (bottom) thermal resistance
n/a
(1)
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
6.5 General Electrical Characteristics
(1) (2)
Limits apply over the full ambient temperature range -40°C
≤ TA ≤ 85°C, VVDDA5V = VVINBXX = 3.7 V, VVIOSYS = VNRST = 1.8 V,
VOUT = 1.1 V, (unless otherwise noted).
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
CURRENTS
Shutdown supply current.
Total current into power
ISHDN
VVIOSYS = 0 V, VNRST = 0 V
0.1
2
connections VDDA5V and
VINBXX
µA
Standby mode supply current.
Total current into power
ISTBY
VVIOSYS = 1.8 V, VNRST = 0 V
50
connections VDDA5V and
VINBXX
Low-power PFM Mode, no load, one core
130
µA
Active mode current
active
consumption. Total current
IActive
PFM Mode, no load, one core active
400
µA
into power connections
Forced PWM Mode, no load, one core
VDDA5V and VINBXX
14.5
mA
active
LOGIC AND CONTROL INPUTS SCLSYS, SDASYS, ADDR
0.3 x
VIL
Input low level
VVIOSYS = 1.8 V to 3.3 V
VVIOSYS
VIH
Input high level
VVIOSYS = 1.8 V to 3.3 V
0.7 x VVIOSYS
V
Hysteresis of Schmitt trigger
Vhys
0.1 x VVIOSYS
inputs (SCLSYS, SDASYS)
Ci
Capacitance of pins
See (3)
4
pF
(1)
All voltage values are with respect to network ground pin.
(2)
Minimum (Min) and Maximum (Max) limits are specified by design, test, or statistical analysis. Typical (Typ.) numbers are not ensured,
but do represent the most likely norm.
(3)
Maximum capacitance of SCLSYS or SDASYS line is 8 pF, if ADDR pin is connected to line for serial bus address selection.
6
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Copyright © 2014, Texas Instruments Incorporated
Product Folder Links: LP8754


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