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TPS3896 PDF预览

TPS3896

更新时间: 2024-11-25 11:06:31
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德州仪器 - TI 监控电源管理电路电源电路
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21页 749K
描述
具有低电平有效和推挽输出的单通道、超小型、可调节监控器

TPS3896 数据手册

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TPS3895, TPS3896  
TPS3897, TPS3898  
www.ti.com  
SBVS172A JULY 2011REVISED SEPTEMBER 2011  
Single-Channel, Adjustable Supervisory Circuit in Ultra-Small Package  
Check for Samples: TPS3895, TPS3896, TPS3897, TPS3898  
1
FEATURES  
DESCRIPTION  
The TPS3895, TPS3896, TPS3897, and TPS3898  
2
Very Small µSON (1.45 mm × 1 mm) Package  
devices (TPS389x) are family of very small  
a
Adjustable Threshold down to 500 mV  
Threshold Accuracy: 1.0% Over Temperature  
Capacitor-Adjustable Delay Time  
Low Quiescent Current: 6 µA (typ)  
External Enable Input  
supervisory circuits that monitors voltage greater than  
500 mV with a 0.25% (typical) threshold accuracy  
and offer a adjustable delay time using external  
capacitors. The TPS389x family also has a logic  
enable pin (ENABLE or ENABLE) to power on/off the  
output. With the TPS3895, for example, when the  
input voltage pin (SENSE) rises above the threshold,  
and the enable pin (ENABLE) is high, then the output  
Open-Drain (rated at 18V)/Push-Pull Output  
Options  
pin  
(SENSE_OUT)  
goes  
high  
after  
the  
Temperature Range: 40°C to +125°C  
capacitor-adjustable delay time. When SENSE falls  
below the threshold or ENABLE is low, then  
SENSE_OUT goes low. For truth tables, see Table 2  
and Table 3.  
Pin-for-Pin Compatible with MAX6895/6/7/8  
APPLICATIONS  
DSPs, Microcontrollers, and Microprocessors  
Notebook and Desktop Computers  
PDAs and Handheld Products  
For TPS389xA versions, both SENSE and ENABLE  
have a capacitor-adjustable delay. The output asserts  
after this capacitor-adjustable delay when both  
SENSE and ENABLE inputs are good. The  
TPS389xP devices have a small, 0.2-µs propagation  
delay from when the enable pin asserts to when the  
output pin asserts, provided SENSE is above the  
threshold.  
Portable and Battery-Powered Products  
FPGA and ASIC  
TPS3895/TPS3897  
DRY PACKAGE  
(TOP VIEW)  
All devices operate from 1.7 V to 6.5 V and have a  
typical quiescent current of 6 µA with an open-drain  
output rated at 18 V. The TPS389x is available in an  
ultra-small µSON package and is fully specified over  
the temperature range of TJ = 40°C to +125°C.  
ENABLE  
GND  
1
2
3
6
5
4
VCC  
CT  
SENSE  
SENSE_OUT  
Table 1. FAMILY COMPARISON  
INPUT  
(SENSE)  
DELAY  
ENABLE  
DELAY  
TPS3896/TPS3898  
DRY PACKAGE  
(TOP VIEW)  
DEVICE  
ENABLE  
OUTPUT  
Active  
high  
Active high,  
push-pull  
Capacitor  
adjustable  
Capacitor  
adjustable  
TPS3895A  
Active  
high  
Active high,  
push-pull  
Capacitor  
adjustable  
TPS3895P  
0.2 µs  
ENABLE  
GND  
1
2
3
6
5
4
VCC  
Active low,  
push-pull  
Capacitor  
adjustable  
Capacitor  
adjustable  
TPS3896A Active low  
TPS3896P Active low  
CT  
Active low,  
push-pull  
Capacitor  
adjustable  
SENSE  
SENSE_OUT  
0.2 µs  
Active  
TPS3897A  
Active high,  
open-drain  
Capacitor  
adjustable  
Capacitor  
adjustable  
high  
Active  
TPS3897P  
Active high,  
open-drain  
Capacitor  
adjustable  
0.2 µs  
high  
Active low,  
open-drain  
Capacitor  
adjustable  
Capacitor  
adjustable  
TPS3898A Active low  
TPS3898P Active low  
Active low,  
open-drain  
Capacitor  
adjustable  
0.2 µs  
1
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.  
2
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2011, Texas Instruments Incorporated  
 

TPS3896 替代型号

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