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LM25066PSQE データシート(PDF) 3 Page - Texas Instruments

部品番号 LM25066PSQE
部品情報  System Power Management and Protection IC With PMBus
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
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LM25066PSQE データシート(HTML) 3 Page - Texas Instruments

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5x4 mm WQFN 24L
1
24
OUT
PGD
TIMER
VAUX
SCL
SMBA
VREF
DIODE
PWR
RETRY
Exposed
Pad
LM25066
www.ti.com
SNVS654J – FEBRUARY 2010 – REVISED DECEMBER 2015
5 Description (continued)
The LM25066 monitoring block computes both the real-time and average values of subsystem operating
parameters (VIN, IIN, PIN, VOUT) as well as the peak power. Accurate power averaging is accomplished by
averaging the product of the input voltage and current. A black box (Telemetry/Fault Snapshot) function captures
and stores telemetry data and device status in the event of a warning or a fault.
6 Pin Configuration and Functions
NHZ Package
24-Pin WQFN
Top View
NOTE: Solder exposed pad to ground.
Pin Functions
PIN
TYPE
DESCRIPTION
NO.
NAME
3 - state address line. Should be left floating, or else direct connection (either trace or 0-
Ω
1
ADR2
SMBUS address line 2
resistor) to VDD or GND.
3 - state address line. Should be left floating, or else direct connection (either trace or 0-
Ω
2
ADR1
SMBUS address line 1
resistor) to VDD or GND.
3 - state address line. Should be left floating, or else direct connection (either trace or 0-
Ω
3
ADR0
SMBUS address line 0
resistor) to VDD or GND.
Internal sub-regulator
Internally sub-regulated 4.5 V bias supply. Connect a 1 µF capacitor on this pin to ground
4
VDD
output
for bypassing.
Connect this pin to GND to set the nominal overcurrent threshold at 25 mV. Connecting
5
CL
Current limit range
CL to VDD will set the overcurrent threshold to be 46 mV.
This pin sets the circuit breaker protection point in relation to the overcurrent trip point.
When connected to GND, this pin will set the circuit breaker point to be 1.8 times the
6
CB
Circuit breaker range
overcurrent threshold. Connecting this pin to VDD sets the circuit breaker trip point to be
3.6 times the overcurrent threshold.
An external resistor divider from OUT sets the output voltage at which the PGD pin
7
FB
POWER GOOD feedback
switches. The threshold at the pin is 1.167 V. An internal 24 µA current source provides
hysteresis.
This pin configures the power up fault retry behavior. When this pin is grounded, the
8
RETRY
Fault retry input
device will continually try to engage power during a fault. If the pin is connected to VDD,
the device will latch off during a fault.
Copyright © 2010–2015, Texas Instruments Incorporated
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Product Folder Links: LM25066


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