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参数资料
| 型号： | LM25066APSQE |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, QCC24 |
| 封装： | LLP-24 |
| 文件页数： | 29/48页 |
| 文件大小： | 1658K |
| 代理商： | LM25066APSQE |
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TABLE 28. MFR_SPECIFIC_07 GATE MASK Definitions
Bit
NAME
Default
7
Not used, always 0
0
6
Not used, always 0
0
5
VIN UV FAULT
0
4
VIN OV FAULT
0
3
IIN/PFET FAULT
0
2
OVERTEMP FAULT
0
1
Not used, always 0
0
CIRCUIT BREAKER
FAULT
0
The IIN/PFET Fault refers to the input current fault and the
MOSFET power dissipation fault. There is no input power fault
detection, only input power warning detection.
MFR_SPECIFIC_08: ALERT_MASK (D8h)
The ALERT_MASK command is used to mask the SMBA
when a specific fault or warning has occurred. Each bit cor-
responds to one of the 14 different analog and digital faults or
warnings that would normally result in an SMBA being set.
When the corresponding bit is high, that condition will not
cause the SMBA to be asserted. If that condition occurs, the
registers where that condition is captured will still be updated
(STATUS registers, DIAGNOSTIC_WORD) and the external
MOSFET gate control will still be active (VIN_OV_FAULT,
VIN_UV_FAULT,
IIN/PFET_FAULT,
CB_FAULT,
OT_FAULT). This register is accessed with the PMBus
Read / Write Word protocol. The VIN UNDERVOLTGE
FAULT flag will default to 1 on startup. However, it will be
cleared to 0 after the first time the input voltage exceeds the
resistor programmed UVLO threshold.
TABLE 29. ALERT_MASK Definitions
BIT
NAME
DEFAULT
15
VOUT UNDERVOLTAGE WARN
0
14
IIN LIMIT Warn
0
13
VIN UNDERVOLTAGE WARN
0
12
VIN OVERVOLTAGE WARN
0
11
POWER GOOD
1
10
OVERTEMP WARN
0
9
Not Used
0
8
OVERPOWER LIMIT WARN
0
7
Not Used
0
6
EXT_MOSFET_SHORTED
0
5
VIN UNDERVOLTAGE FAULT
1
4
VIN OVERVOLTAGE FAULT
0
3
IIN/PFET FAULT
0
2
OVERTEMPERATURE FAULT
0
1
CML FAULT (Communications Fault)
0
CIRCUIT BREAKER FAULT
0
MFR_SPECIFIC_09: DEVICE_SETUP (D9h)
The DEVICE_SETUP command may be used to override pin
settings to define operation of the LM25066A under host con-
trol. This command is accessed with the PMBus read / write
byte protocol.
TABLE 30. DEVICE_SETUP Byte Format
Bit
Name
Meaning
7:5
Retry setting
111 = Unlimited retries
110 = Retry 16 times
101 = Retry 8 times
100 = Retry 4 times
011 = Retry 2 times
010 = Retry 1 time
001 = No retries
000 = Pin configured retries
4
Current limit setting
0 = Low setting (25mV)
1 = High setting (46mV)
Bit
Name
Meaning
3
CB/CL Ratio
0 = Low setting (1.8x)
1 = High setting (3.6x)
2
Current limit
Configuration
0 = Use pin settings
1 = Use SMBus settings
1
Circuit breaker
Configuration
0 = Use pin settings
1 = Use SMBus settings
0
Unused
In order to configure the Current Limit Setting via this register,
it is necessary to set the Current Limit Configuration bit (2) to
1 to enable the register to control the current limit function and
the Current Limit Setting bit (4) to select the desired setting.
Similarly, in order to control the Circuit Breaker via this regis-
ter, it is necessary to set the Circuit Breaker Configuration bit
(1) to 1 to enable the register to control the Circuit Breaker
Setting, and the Circuit Breaker / Current Limit Ratio bit (3) to
the desired value. If the respective Configuration bits are not
set, the Settings will be ignored and the pin set values used.
The Current Limit Configuration effects the coefficients used
for the Current and Power measurements and warning reg-
isters.
35
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LM25066A
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相关代理商/技术参数 |
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|---|---|
| LM25066APSQE/NOPB | 功能描述:热插拔功率分布 RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| LM25066APSQX | 制造商:TI 制造商全称:Texas Instruments 功能描述:System Power Management and Protection IC with PMBusa?￠ |
| LM25066APSQX/NOPB | 功能描述:热插拔功率分布 RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| LM25066EVK/NOPB | 功能描述:电源管理IC开发工具 LM25066 EVAL BOARD RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压: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 |
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