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参数资料
| 型号： | MAX13038ATI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/22页 |
| 文件大小： | 0K |
| 描述： | IC AUTO CONTACT MONITOR 28-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 应用： | 自动 |
| 接口： | SPI |
| 电源电压： | 6 V ~ 26 V |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（5x5） |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
IN1 (see Table 4). The DO0 and DO1 outputs are three-
stated when WEND = 1. When programmed as direct
inputs (WEND = 0), any input changes on IN0 and IN1
are not reflected by the status register.
Bits 9 and 8: Switch Configuration for IN7–IN4 (M1, M0)
The M1 and M0 bits set the switch configuration in
groups of two for IN7 through IN4 (see Table 5). Set M1
to configure IN7 and IN6 for battery-connected switches
and clear M1 for ground-connected switches. Set M0 to
configure IN5 and IN4 for battery-connected switches
and clear M0 for ground-connected switches.
Bits 7–0: Interrupt Enable for IN7–IN0 (P7–P0)
The P7 through P0 bits allow independent control of
whether inputs IN7 through IN0 generate an interrupt
(
INT). Set any bit to disable interrupts on the corre-
sponding input and clear the bit to enable interrupts on
the corresponding channel. An interrupt is asserted
when any input configured for interrupts changes state.
IN0 and IN1 do not generate an interrupt when confi-
gured as direct inputs (WEND = 0).
Operating Modes
The MAX13037/MAX13038 feature three modes of oper-
ation: normal mode, scan mode, and shutdown mode.
Normal mode is entered when the scanning period bits
in the command register are configured for continuous
scanning ([SC2:SC1:SC0] = [1:1:1] or [1:1:0]). Scan
mode is entered when the scanning period bits are set
for a periodic scanning time as shown in Table 3.
Shutdown mode is entered by driving the shutdown
input (
SD) low. The default mode after power-up is scan
mode (when
SD = high) with a scan period of 64ms.
Normal Mode (Continuous Scanning)
In normal mode, the input sense resistors are always
connected to the switch inputs to detect any input status
change (except IN0 and IN1 when WEND = [0]). Wetting
currents are enabled according to the WEN, WEND, and
WTOFF bits in the command register. If adjustable hys-
teresis is not required, this feature can be disabled to
reduce power consumption (see the
Typical Operating
Characteristics) by setting the scanning period bits in the
command register to ([SC2:SC1:SC0] = [1:1:0]). The
hysteresis is set to 0.166 x VBATREF when adjustable
hysteresis is disabled.
Scan Mode
In scan mode, each sense resistor is connected for a
finite duration of 250s (typ) and is repeated at a period
according to the scanning period bits SC2, SC1, and SC0
(see Table 3). All input resistors are connected simultane-
ously and the inputs are polled at the same time. When all
external switches are open and the scanning period is set
to 64ms the scanning mode reduces current consump-
tion to typically 28A (LDO on) and 17A (LDO off).
Wetting currents (if enabled) are applied to closed
switches during the polling time of 250s (typ) and are
pulsed at the programmed scanning period. When
WTOFF is set, the wetting current continuously pulses at
the programmed scanning period. When WTOFF is
cleared, the wetting current pulses at the programmed
scanning period, but turns off after 20ms elapses. Inputs
IN0 and IN1 cannot be used as direct inputs (WEND = 0)
in scan mode. When configured as direct inputs in scan
mode, the outputs DO0 and DO1 are high impedance.
The quiescent current for a given scan mode can be cal-
culated by the following formula (LDO off):
Where VBAT = SD = +14V, IBAT is the BAT current
expressed in microamps and tSCAN_P is the scanning
period expressed in milliseconds.
Shutdown Mode
In shutdown mode, the LDO is disabled, all switch
inputs are high impedance and the external switches
are no longer monitored, reducing current consumption
on BAT to 2.85A (typ). The MAX13037/MAX13038
reset upon entering shutdown mode and the contents
of the command register are lost. Exit shutdown mode
by bringing the voltage on
SD above +2.4V. The SD
input is compatible with voltages up to VBAT. The
MAX13037/MAX13038 take 200s (typ) to exit shutdown
I
t
BAT( A)
SCAN P(ms)
μ
=×
+
16
1
_
MAX13037/MAX13038
Automotive Contact Monitor and
Level Shifters with LDO Regulator
______________________________________________________________________________________
17
Table 5. Switch Configuration Controlled by M1 and M0
M1
M0
IN7 AND IN6 SWITCH
CONFIGURATION
IN5 AND IN4 SWITCH
CONFIGURATION
IN3–IN0 SWITCH
CONFIGURATION
0
Ground
0
1
Ground
Battery
Ground
1
0
Battery
Ground
1
Battery
Ground
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX13038ATI+ | 功能描述:接口 - 专用 Auto Contact Monitor & Level Shift w/LDO RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| MAX13038ATI+T | 制造商:Maxim Integrated Products 功能描述:AUTOMOTIVE CONTACT MONITOR AND LEVE - Tape and Reel |
| MAX13038ATX+ | 功能描述:接口 - 专用 Auto Contact Monitor & Level Shift w/LDO RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| MAX13038ATX+T | 功能描述:接口 - 专用 Auto Contact Monitor & Level Shift w/LDO RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| MAX1303AEUP | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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