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TPIC44H01

更新时间： 2024-09-14 22:15:19
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德州仪器 - TI 驱动器
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28页 402K
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4-CHANNEL SERIAL AND PARALLEL HIGH-SIDE PRE-FET DRIVER

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TPIC44H01 数据手册

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TPIC44H01  
4-CHANNEL SERIAL AND PARALLEL HIGH-SIDE PRE-FET DRIVER  
SLIS088 – SEPTEMBER 1998  
DA PACKAGE  
(TOP VIEW)  
Serial or Parallel Control of Gate Outputs  
Sleep State for Low Quiescent Current  
1
32  
CS  
SD0  
SDI  
PGND  
Independent On-State Source  
Short-to-Ground (Shorted-Load)  
Detection/Protection  
2
31  
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
V
(PWR)  
3
CP1  
CP2  
4
SCLK  
AR_ENBL  
GND  
IN1  
Independent On-State Over-Current  
Detection/Protection With Dynamic Fault  
Threshold  
5
V
(CP)  
6
GATE1  
SRC1  
GATE2  
SRC2  
GATE3  
SRC3  
GATE4  
SRC4  
FLT  
7
Independent Off-State Open-Load  
Detection  
8
IN2  
IN3  
IN4  
9
10  
11  
12  
13  
14  
15  
16  
Supply Over-Voltage Lockout Protection  
V
CC  
Asynchronous Open-Drain Fault Interrupt  
Terminal to Flag Fault Conditions. Output  
Can be OR’ed With Multiple Devices  
V
V
(PK_A)  
(PK_B)  
V
V
V
(COMP1)  
(COMP2)  
(COMP3)  
Encoded Fault Status Reporting Through  
Serial Output Terminal (2-Bits Per Channel)  
RESET  
V
(COMP4)  
Programmable On-State Fault Deglitch  
Timers  
High Impedance CMOS Compatible Inputs  
With Hysteresis  
Fault Mode Selection: Outputs Latched Off  
or Switched at Low Duty Cycle  
Device Can be Cascaded With Serial  
Interface  
description  
The TPIC44H01 is a four channel high-side pre-FET driver which provides serial or parallel input interface to  
control four external NMOS power FETs. It is designed for use in low frequency switching applications for  
resistive or inductive loads, including solenoids and incandescent bulbs.  
Each channel has over-current, short-to-ground, and open-load detection that is flagged through the FLT pin  
and distinguished through the serial interface. Over-current thresholds are set through the V  
and  
(PK_x)  
V
pins. Short-to-ground and open-load thresholds are set internally to approximately 2.5 V. The  
(COMP1-4)  
AR_ENBL pin is used to define the operation of the device during a fault condition, allowing the outputs to either  
latch off or to enter a low duty cycle, auto-retry mode. An over-voltage lockout circuit on V protects the  
(PWR)  
device and the external FETs. A low current sleep state mode is provided to allow the TPIC44H01 to be used  
in applications where V is connected directly to the battery. An internal charge pump allows the use of  
(PWR)  
N-channel FETs for high-side drive applications, while current-limit gate drive provides slope control for reduced  
RFI.  
By having the unique ability to develop a dynamic over-current threshold, the TPIC44H01 can be used to drive  
incandescent bulbs with long inrush currents without falsely flagging a fault. Likewise, the user can select an  
internally set over-current threshold of ~1.25 V by pulling the respective V  
pin to V  
.
(COMP1-4)  
CC  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
TI is a trademark of Texas Instruments Incorporated.  
Copyright 1998, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...28

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