參數(shù)資料
型號(hào)： LM25066APSQE
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 電源管理
英文描述： POWER SUPPLY SUPPORT CKT, QCC24
封裝： LLP-24
文件頁數(shù)： 22/48頁
文件大?。?/td> 1658K
代理商： LM25066APSQE
STANDARD PMBus COMMANDS
OPERATION (01h)
The OPERATION command is a standard PMBus com-
mand that controls the MOSFET switch. This command may
be used to switch the MOSFET ON and OFF under host con-
trol. It is also used to re-enable the MOSFET after a fault
triggered shutdown. It is also used to re-enable the MOSFET
after a fault triggered shutdown. Writing only an ON command
after a fault triggered shutdown will not clear the fault regis-
ters. The host must clear the fault condition prior to re-en-
abling the MOSFET in this situation. The OPERATION
command is issued with the write byte protocol.
TABLE 2. Recognized OPERATION Command Values
Value
Meaning
Default
80h
Switch ON
80h
00h
Switch OFF
n/a
CLEAR FAULTS (03h)
The CLEAR_FAULTS command is a standard PMBus
command that resets all stored warning and fault flags and
the SMBA signal. If a fault or warning condition still exists
when the CLEAR_FAULTS command is issued, the SMBA
signal may not clear or will re-assert almost immediately. Is-
suing a CLEAR_FAULTS command will not cause the MOS-
FET to switch back on in the event of a fault turn-off: that must
be done by issuing an OPERATION command after the fault
condition is cleared. This command uses the PMBus send
byte protocol.
CAPABILITY (19h)
The CAPABILITY command is a standard PMBus com-
mand that returns information about the PMBus functions
supported by the LM25066A. This command is read with the
PMBus read byte protocol.
TABLE 3. CAPABILITY Register
Value Meaning
Default
B0h
Supports Packet Error Check, 400Kbits/
sec, Supports SMBus Alert
B0h
VOUT_UV_WARN_LIMIT (58h)
The VOUT_UV_WARN_LIMIT command is a standard PM-
Bus command that allows configuring or reading the thresh-
old for the VOUT Under-voltage Warning detection. Reading
and writing to this register should use the coefficients shown
in the Telemetry and Warning Conversion Coefficients Table.
Accesses to this command should use the PMBus read or
write word protocol. If the measured value of VOUT falls be-
low the value in this register, VOUT UV Warn flags are set in
the respective registers, and the SMBA signal is asserted.
TABLE 4. VOUT_UV_WARN_LIMIT Register
Value
Meaning
Default
1h – 0FFFh
VOUT Under-
voltage Warning
detection
threshold
0000h (disabled)
0000h
VOUT Under-
voltage Warning
disabled
n/a
OT_FAULT_LIMIT (4Fh)
The OT_FAULT_LIMIT command is a standard PMBus
command that allows configuring or reading the threshold for
the over-temperature fault detection. Reading and writing to
this register should use the coefficients shown in the Teleme-
try and Warning Conversion Coefficients Table. Accesses to
this command should use the PMBus read or write word
protocol. If the measured temperature exceeds this value, an
over-temperature fault is triggered, the MOSFET is switched
off, OT Fault flags are set in the respective registers, and the
SMBA signal is asserted. After the measured temperature
falls below the value in this register, the MOSFET may be
switched back on with the OPERATION command. A single
temperature measurement is an average of 16 round-robin
cycles. Therefore, the minimum temperature fault detection
time is 16 ms.
TABLE 5. OT_FAULT_LIMIT Register
Value
Meaning
Default
0h – 0FFEh
Over-temperature
Fault threshold
value
0960h (150°C)
0FFFh
Over-temperature
Fault detection
disabled
n/a
OT_WARN_LIMIT (51h)
The OT_WARN_LIMIT command is a standard PMBus
command that allows configuring or reading the threshold for
the over-temperature warning detection. Reading and writing
to this register should use the coefficients shown in the
Telemetry and Warning Conversion Coefficients Table. Ac-
cesses to this command should use the PMBus read or
write word protocol. If the measured temperature exceeds this
value, an over-temperature warning is triggered, the OT
Warning flags set in the respective registers, and the SMBA
signal is asserted. A single temperature measurement is an
average of 16 round-robin cycles. Therefore, the minimum
temperature fault detection time is 16 ms.
TABLE 6. OT_WARN_LIMIT Register
Value
Meaning
Default
0h – 0FFEh
Over-temperature
Warn Threshold
Value
07D0h (125°C)
0FFFh
Over-temperature
Warn detection
disabled
n/a
VIN_OV_WARN_LIMIT (57h)
The VIN_OV_WARN_LIMIT command is a standard PM-
Bus command that allows configuring or reading the thresh-
old for the VIN over-voltage warning detection. Reading and
writing to this register should use the coefficients shown in the
Telemetry and Warning Conversion Coefficients Table. Ac-
cesses to this command should use the PMBus read or
write word protocol. If the measured value of VIN rises above
the value in this register, VIN OV Warn flags are set in the
respective registers, and the SMBA signal is asserted.
29
www.national.com
LM25066A
相關(guān)PDF資料
PDF描述
LM2575T-012G 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, SFM5
LM2577K-12/883 6 A SWITCHING REGULATOR, 62 kHz SWITCHING FREQ-MAX, MBFM2
LM2577KADJ/883 6 A SWITCHING REGULATOR, 62 kHz SWITCHING FREQ-MAX, MBCY4
LM2577K-15/883 6 A SWITCHING REGULATOR, 62 kHz SWITCHING FREQ-MAX, MBFM2
LM2633MTDX/NOPB SWITCHING CONTROLLER, 275 kHz SWITCHING FREQ-MAX, PDSO48
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM25066APSQE/NOPB 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
LM25066APSQX 制造商:TI 制造商全稱:Texas Instruments 功能描述:System Power Management and Protection IC with PMBusa?￠
LM25066APSQX/NOPB 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
LM25066EVK/NOPB 功能描述:電源管理IC開發(fā)工具 LM25066 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
LM25066IAPSQ/NOPB 制造商:Texas Instruments 功能描述:IC PWR MGMT/PROT PMBUS 24WQFN 制造商:Texas Instruments 功能描述:System PWR Mgmt & Protection IC
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*