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参数资料
| 型号： | MAX15008ATJ+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/24页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 5V/ADJ .3A 32TQFN-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 稳压器拓扑结构： | 正，固定式或可调式 |
| 输出电压： | 5V，1.8 V ~ 11 V |
| 输入电压： | 5 V ~ 40 V |
| 电压 - 压降（标准）： | 0.775V @ 300mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 300mA（最小） |
| 电流 - 限制（最小）： | 330mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
| 包装： | 管件 |
Automotive 300mA LDO Voltage Regulators
with Tracker Output and Overvoltage Protector
Table 1. EN_LDO/ H O L D Truth Table/State Table
OPERATION STATE
EN_LDO
HOLD
OUT_LDO
COMMENT
EN_LDO is pulled to SGND through an internal pulldown. HOLD
Initial State
Low
Don’t care
OFF
is unconnected and is internally pulled up to OUT_LDO. The
regulator is disabled.
Turn-On State
Hold Setup State
Hold State
Off State
High
High
Low
Low
Don’t care
Low
Low
High or
unconnected
ON
ON
ON
OFF
EN_LDO is externally driven high turning regulator on. HOLD is
pulled up to OUT_LDO.
HOLD is externally pulled low while EN_LDO remains high
(latches EN_LDO state).
EN_LDO is driven low or left unconnected. HOLD remains
externally pulled low keeping the regulator on.
HOLD is driven high or left unconnected while EN_LDO is low.
The regulator is turned off and EN_LDO/ HOLD logic returns to the
initial state.
Applications Information
Load Dump
Most automotive applications run off a multicell 12V
lead-acid battery with a nominal voltage that swings
between 9V and 16V, depending on load current,
charging status, temperature, and battery age, etc. The
battery voltage is distributed throughout the automobile
and is locally regulated down to voltages required by
the different system modules. Load dump occurs when
the alternator is charging the battery and the battery
becomes disconnected. Power in the alternator (behav-
ing now essentially as an inductor) flows into the dis-
put voltage (V OUT_LDO ) to 5V. To select the preset 5V
output voltage, connect FB_LDO to SGND.
To select an adjustable output voltage between 1.8V
and 11V, use two external resistors connected as a
voltage-divider to FB_LDO (Figure 3). Set the output
voltage using the following equation:
V OUT_LDO = V FB_LDO x (R 1 + R 2 ) / R 2
where V FB_LDO = 1.235V and R 2 ≤ 50k Ω .
tributed power system and elevates the voltage seen at
V IN
IN
OUT_LDO
each module. The voltage spikes have rise times typi-
cally greater than 5ms and decay within several hun-
dred milliseconds but can extend out to 1s or more
depending on the characteristics of the charging sys-
tem. These transients are capable of destroying semi-
conductors on the first fault event.
The MAX15008/MAX15010 feature load-dump transient
protection up to +45V.
Setting the Output Voltage
The MAX15008/MAX15010 feature dual-mode opera-
tion: these devices operate in either a preset voltage
mode or an adjustable mode. In preset voltage mode,
MAX15008
MAX15010
FB_LDO
SGND
R1
R2
internal feedback resistors set the linear regulator out-
Figure 3. Setting the LDO Output Voltage
______________________________________________________________________________________
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX15008ATJ+ | 功能描述:低压差稳压器 - LDO Automotive 300mA w/Tracker Output RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX15008ATJ+T | 功能描述:低压差稳压器 - LDO Automotive 300mA w/Tracker Output RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX15008EVKIT+ | 功能描述:电源管理IC开发工具 MAX15008 Eval Kit 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 |
| MAX15009ATJ+ | 功能描述:低压差稳压器 - LDO Automotive 300mA w/Switched Output RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| MAX15009ATJ+T | 功能描述:低压差稳压器 - LDO Automotive 300mA w/Switched Output RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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