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| 型号： | MAX15008ATJ+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 16/24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
Setting the RESET Timeout Period
The reset timeout period is adjustable to accommodate
a variety of applications. Set the reset timeout period by
connecting a capacitor, C RESET , between CT and
SGND. Use the following formula to select the reset
timeout period, t RESET :
t RESET = C RESET x V CT_TH / I CT
where t RESET is in seconds and C RESET is in μF.
V CT_TH is the CT ramp threshold in volts and I CT is the
CT ramp current in μA, as described in the Electrical
Characteristics table.
Leave CT open to select an internally fixed timeout peri-
od of 10μs. To maintain reset timeout accuracy, use a
low-leakage (< 10nA) type capacitor.
Tracker Input/Feedback Adjustment
The tracker can be powered from the LDO input supply
voltage or an independent voltage source. It is
designed to supply power to a remote sensor and its
supply input, TRACK, is able to handle the severe con-
ditions in automotive applications such as battery
reversal and load-dump transients up to 45V.
The tracker feedback, FB_TRK, and a separate tracker
reference voltage input, ADJ, offer the flexibility of set-
ting the tracker output to be lower, equal to, or higher
than the main (LDO) output. Other external voltages
can also be tracked.
Connect ADJ to OUT_LDO and FB_TRK to OUT_TRK to
track the LDO output voltage directly (Figure 4a). To
track a voltage higher than V OUT_LDO , directly connect
ADJ to OUT_LDO and connect FB_TRK to OUT_TRK
through a resistive voltage-divider (Figure 4b). To track
a voltage lower than the LDO regulator output,
V OUT_LDO , directly connect FB_TRK to OUT_TRK and
connect ADJ to OUT_LDO through a resistive voltage-
divider (Figure 4c). To track an external voltage V X with
a generic attenuation/amplification ratio, connect resis-
tive voltage-dividers between ADJ and the voltage input
or output to be tracked (V X ), and between OUT_TRK
and FB_TRK (Figure 4d). Pay attention to the resistive
loading of the voltage V X due to the divider R5, R6.
To track the internal REF voltage (1.235V), directly connect
ADJ to REF. The voltage at FB_TRK or ADJ should be
greater than or equal to 1.1V and less than V TRACK - 0.5V.
Resistors should have a tolerance of 1% or better. Their
values should be low enough to ensure that the divider
current is at least 100x the maximum input bias current
at pins FB_TRK and ADJ (I FB_TRK_ADJ , max = 0.2μA).
MAX15008
V IN
IN
TRACK
OUT_LDO
ADJ
MAX15008
MAX15010
LDO
OUTPUT
V IN
IN
TRACK
OUT_LDO
ADJ
MAX15010
OUT_TRK
LDO
OUTPUT
TRACKER
OUTPUT
OUT_TRK
FB_TRK
TRACKER
OUTPUT
FB_TRK
R3
R4
TO TRACK V OUT_LDO :
V OUT_TRK = V OUT_LDO
TO TRACK A VOLTAGE HIGHER THAN
V OUT_LDO :
V OUT_TRK = V OUT_LDO x (R3 + R4) / R4,
R3 + R4 < V OUT_TRK / 20 μ A
(a)
(b)
R5
V IN
IN
OUT_LDO
LDO
OUTPUT
V IN
IN
ADJ
V X
MAX15008
R5
MAX15008
R6
TRACK
MAX15010
ADJ
R6
TRACK
MAX15010
OUT_TRK
TRACKER
OUTPUT
R3
OUT_TRK
FB_TRK
TO TRACK A VOLTAGE LOWER THAN V OUT_LDO :
V OUT_TRK = V OUT_LDO x R6 / (R5 + R6),
R5 + R6 < V OUT_LDO / 20 μ A
(c)
Figure 4. Tracker Input and Feedback Adjustment
TRACKER
OUTPUT
FB_TRK
TO TRACK A GENERIC VOLTAGE V X :
V OUT_TRK = V X x (R6 / (R5 + R6)) x ((R3 + R4) / R4),
R5 + R6 < V X / 20 μ A, R3 + R4 < V OUT_TRK / 20 μ A
(d)
R4
16
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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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