Datasheet > ATA6837-PXQW

ATA6837-PXQW

更新时间： 2024-01-02 12:56:08

品牌	Logo	应用领域
爱特美尔 - ATMEL		驱动器
页数	文件大小	规格书
18页	376K
描述
High Temperature Hex Half-bridge Driver with Serial Input Control

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ATA6837-PXQW 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	QFN	包装说明：	HVQCCN, LCC24,.19SQ,25
针数：	24	Reach Compliance Code：	unknown
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.76	内置保护：	OVER CURRENT; THERMAL; UNDER VOLTAGE
接口集成电路类型：	HALF BRIDGE BASED PERIPHERAL DRIVER	JESD-30 代码：	S-XQCC-N24
长度：	5 mm	功能数量：	6
端子数量：	24	最高工作温度：	150 °C
最低工作温度：	-40 °C	输出电流流向：	SOURCE AND SINK
封装主体材料：	UNSPECIFIED	封装代码：	HVQCCN
封装等效代码：	LCC24,.19SQ,25	封装形状：	SQUARE
封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	电源：	5,7.5/40 V
认证状态：	Not Qualified	座面最大高度：	1 mm
子类别：	MOSFET Drivers	最大供电电压：	5.25 V
最小供电电压：	4.75 V	标称供电电压：	5 V
电源电压1-最大：	40 V	电源电压1-分钟：	7.5 V
电源电压1-Nom：	13 V	表面贴装：	YES
温度等级：	AUTOMOTIVE	端子形式：	NO LEAD
端子节距：	0.65 mm	端子位置：	QUAD
断开时间：	20 µs	接通时间：	20 µs
宽度：	5 mm	Base Number Matches：	1

ATA6837-PXQW 数据手册

ATA6837

3.2

3.3

Power-supply Fail

In case of undervoltage at pin VS, an internal timer is started. When during a permanent under-

voltage the delay time (t_dUV) is reached, the power supply fail bit (PSF) in the output register is

set and all outputs are disabled. When normal voltage is present again, the outputs are enabled

immediately. The PSF bit remains high until it is reset by the SRR bit in the input register.

Open-load Detection

If the open-load detection bit (OLD) is set to low, a pull-up current for each high-side switch and

a pull-down current for each low-side switch is turned on (open-load detection current I_HS1-6

_LS1-6). If V_VS– V_HS1-6or V_LS1-6is lower than the open-load detection threshold (open-load condi-

tion), the corresponding bit of the output in the output register is set to high. Switching on an

output stage with OLD bit set to low disables the open load function for this output.

3.4

Overtemperature Protection

If the junction temperature exceeds the thermal prewarning threshold, T_jPWset, the temperature

prewarning bit (TP) in the output register is set. When the temperature falls below the thermal

prewarning threshold, T_jPWreset, the bit TP is reset. The TP bit can be read without transferring

a complete 16-bit data word: with CS = high to low, the state of TP appears at pin DO. After the

microcontroller has read this information, CS is set high and the data transfer is interrupted with-

out affecting the state of the input and output registers.

If the junction temperature exceeds the thermal shutdown threshold, T_{j switch off}, the outputs are

disabled and all bits in the output register are set high. The outputs can be enabled again when

the temperature falls below the thermal shutdown threshold, T_{j switch on}, and when a high has

been written to the SRR bit in the input register. Thermal prewarning and shutdown threshold

have hysteresis.

3.5

Short-circuit Protection

The output currents are limited by a current regulator. Current limitation takes place when the

overcurrent limitation and shutdown threshold (I_HS1-6, I_LS1-6) are reached. Simultaneously, an

internal timer is started. The shorted output is disabled when during a permanent short the delay

time (t_dSd) programmed by the short-circuit timer bit (SCT) is reached. Additionally, the short-cir-

cuit detection bit (SCD) is set. If the temperature prewarning bit TP in the output register is set

during a short, the shorted output is disabled immediately and SCD bit is set. By writing a high to

the SRR bit in the input register, the SCD bit is reset and the disabled outputs are enabled.

3.6

Inhibit

There are two ways to inhibit the ATA6837:

• Set bit SI in the input register to 0

• Switch pin INH to 0V

In both cases, all output stages are turned off but the serial interface stays active. The output

stages can be activated again by bit SI = 1 (when INH = VCC) or by pin INH switched back to

VCC (when SI = 1).

4953E–AUTO–09/09

1...4 5 678 9 10...18

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