TPS3897 アクティブ・ハイ、オープン・ドレイン出力のシングルチャネル、超小型、可変スーパーバイザ回路 | TIJ.co.jp

TPS3897 (供給中) アクティブ・ハイ、オープン・ドレイン出力のシングルチャネル、超小型、可変スーパーバイザ回路

 

推奨代替製品

  • TPS3890  - このデバイスは類似の機能を備えていますが、同等の機能ではありません。   TPS3890 は、固定スレッショルド・オプションと、低い静止電圧を備えています。

概要

The TPS3895, TPS3896, TPS3897, and TPS3898 devices (TPS389x) are a family of very small supervisory circuits that monitor voltages greater than 500 mV with a 0.25% (typical) threshold accuracy and offer adjustable delay time using external capacitors. The TPS389x family also has a logic enable pin (ENABLE or ENABLE) to power on and off the output. With the TPS3895, for example, when the input voltage pin (SENSE) rises above the threshold, and the ENABLE pin is high, then the output pin (SENSE_OUT) goes high after the capacitor-adjustable delay time. When SENSE falls below the threshold or ENABLE is low, then SENSE_OUT goes low.

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.

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 USON package and is fully specified over the temperature range of TJ = –40°C to 125°C.

特長

  • Very Small USON (1.45 mm × 1.00 mm) Package
  • Adjustable Threshold Down to 500 mV
  • Threshold Accuracy: 1% Over Temperature
  • Capacitor-Adjustable Delay Time
  • Low Quiescent Current: 6 µA (Typical)
  • External Enable Input
  • Open-Drain (Rated at 18 V) and Push-Pull Output
    Options
  • Temperature Range: –40°C to 125°C
  • Pin-for-Pin Compatible With MAX6895/6/7/8

機能一覧

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Part number オーダー・オプション Threshold voltage 1 (Typ) (V) Number of supplies monitored VCC (Max) (V) VCC (Min) (V) Output driver type/reset output Time delay (ms) Features Rating Operating temperature range (C) Watchdog timer WDI (sec)
TPS3897 ご注文 Adjustable     1     6.5     1.7     Active-low
Open-drain    
Programmable     Active-high enable
Manual reset    
Catalog     -40 to 125     None    
TPS3808 ご注文 Adjustable
0.84
1.12
1.16
1.4
1.67
1.77
2.33
2.79
3.07
4.65    
1     6.5     1.8     Active-low
Open-drain    
Programmable     Active-low enable
Manual reset    
Catalog     -40 to 125     None    
TPS3890 ご注文 Adjustable
1.15
1.44
1.73
2.4
2.89
3.17    
1     5.5     1.5     Active-low
Open-drain    
Programmable     Active-low enable
Manual reset    
Catalog     -40 to 125     None    
TPS3895 ご注文 Adjustable     1     6.5     1.7     Active-low
Push-pull    
Programmable     Active-high enable
Manual reset    
Catalog     -40 to 125     None    
TPS3896 ご注文 Adjustable     1     6.5     1.7     Active-high
Push-pull    
Programmable     Active-low enable
Manual reset    
Catalog     -40 to 125     None    
TPS3898 ご注文 Adjustable     1     6.5     1.7     Active-high
Open-drain    
Programmable     Active-low enable
Manual reset    
Catalog     -40 to 125     None