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LM25066PSQX データシート(PDF) 1 Page - Texas Instruments

部品番号 LM25066PSQX
部品情報  System Power Management and Protection IC With PMBus
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ホームページ  http://www.ti.com
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LM25066PSQX データシート(HTML) 1 Page - Texas Instruments

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OUT
UVLO/EN
VIN
GATE
DIODE
R1
FB
OVLO
SDA
SCL
PGD
SENSE
VDD
SMBus
Interface
SMBA
CL
RETRY
VAUX
VDD
VREF
TIMER
PWR
LM25066/I
Auxillary ADC Input
(0V " 1.16V)
VOUT
COUT
10k
Ÿ
VIN
1 PF
1 PF
RPWR
ADR2
ADR1
ADR0
GND
RSNS
R2
R3
CTIMER
RFB1
RFB2
CIN
Z1
Q2
Q1
D1
1k
Ÿ
Cdv/dt
Only required when
using dv/dt start-up
Q3
R4
D2
Only required when FET
Vgs rating is < +/-20V
D3
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
LM25066
SNVS654J – FEBRUARY 2010 – REVISED DECEMBER 2015
LM25066 System Power Management and Protection IC With PMBus™
1 Features
2 Applications
1
Input Voltage Range: 2.9 V to 17 V
Server Backplane Systems
I2C/SMBus Interface and PMBus™ Compliant
Basestation Power Distribution Systems
Command Structure
Solid-State Circuit Breaker
Programmable 25-mV or 46-mV Current Limit
3 Description
Threshold
The LM25066 combines a high-performance hot-
Configurable Circuit Breaker Protection for Hard
swap controller with a PMBus™ compliant SMBus/I2C
Shorts
interface to accurately measure, protect and control
Configurable Undervoltage and Overvoltage
the electrical operating conditions of computing and
Lockouts With Hysteresis
storage blades connected to a backplane power bus.
Remote Temperature Sensing With
The LM25066 continuously supplies real-time power,
Programmable Warning and Shutdown
voltage, current, temperature and fault data to the
system management host via the SMBus interface.
Thresholds
Detection and Notification of Damaged MOSFET
The LM25066 control block includes a unique hot-
Condition
swap architecture that provides current and power
limiting to protect sensitive circuitry during insertion of
Real-Time Monitoring of VIN, VOUT, IIN, PIN, VAUX
boards into a live system backplane, or any other hot
With 12-bit Resolution and 1-kHz Sampling Rate
power source. A fast acting circuit breaker prevents
Current Measurement Accuracy: ±2.4% Over
damage in the event of a short circuit on the output.
Temperature
The input undervoltage and overvoltage levels and
Power Measurement Accuracy: ±3% Over
hysteresis are configurable, as well as the insertion
delay time and fault detection time. A temperature
Temperature
monitoring block on the LM25066 interfaces with a
True Input Power Measurement Using
low-cost
external
diode
for
monitoring
the
Simultaneous Sampling of VIN and IIN Accurately
temperature of the external MOSFET or other
Averages Dynamic Power Readings
thermally sensitive components. The POWER GOOD
Averaging of VIN, IIN, PIN, and VOUT Over
output provides a fast indicator when the input and/or
Programmable Interval Ranging from 0.001 to
output voltages are outside their programmed range.
4 Seconds
LM25066 current measurement accuracy is ±2.4%
over temperature.
Programmable WARN and FAULT Thresholds
With SMBA Notification
Device Information(1)
Blackbox Capture of Telemetry Measurements
PART NUMBER
PACKAGE
BODY SIZE (NOM)
and Device Status Triggered by WARN or FAULT
LN25066
WQFN (24)
5.00 mm × 4.00 mm
Condition
(1) For all available packages, see the orderable addendum at
Full-Featured Application Design and
the end of the data sheet.
Development GUI
24-Lead WQFN Package
Typical Application Schematic
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.


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