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參數(shù)資料
| 型號(hào)： | TLE4268GS |
| 廠商： | SIEMENS A G |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 5-V Low-Drop Fixed Voltage Regulator |
| 中文描述： | 5 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PDSO8 |
| 文件頁數(shù)： | 4/13頁 |
| 文件大?。?/td> | 138K |
| 代理商： | TLE4268GS |
TLE 4268
Semiconductor Group
4
1998-11-01
Circuit Description
The control amplifier compares a reference voltage, which is kept highly accurate by
resistance adjustment, to a voltage that is proportional to the output voltage and drives
the base of the series transistor via a buffer. Saturation control as a function of the load
current prevents any over-saturation of the power element. If The externally scaled down
output voltage at the reset threshold input drops below 1.35 V, the external reset delay
capacitor is discharged by the reset generator. If the voltage on the capacitor reaches
the lower threshold
V
ST
, a reset signal is generated on the reset output and not cancelled
again until the upper threshold voltage is exceeded. If the reset threshold input is
connected to GND, reset is triggered at an output voltage of 4.5 V. A connected
microcontroller is monitored by the watchdog logic. If pulses are missing, the rest output
is set to low. The pulse sequence time can be set within a wide range with the reset delay
capacitor. The IC also incorporates a member of internal circuits for protection against:
Overload
Overtemperature
Reverse polarity
Figure 3
Block Diagram
AEB01539
Temperature
Sensor
-
+
Control
Amplifier
Protection
Circuit
Reference
Bandgap
Adjustment
Generator
Reset
Watchdog
Watchdog
Input
3
12
10
9
Output
Reset
Output
Reset
Switching
Threshold
Reset
Delay
11
18
Input
4-7, 14-17
GND
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| TLE4268G | 5-V Low-Drop Fixed Voltage Regulator |
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| TLE4269A | 5-V Low-Drop Fixed Voltage Regulator |
| TLE4269G | 5-V Low-Drop Fixed Voltage Regulator |
| TLE4269GL | 5-V Low-Drop Fixed Voltage Regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TLE4268GSNTMA1 | 制造商:Infineon Technologies AG 功能描述:IC REG LDO 5V 0.15A 8DSO |
| TLE4268GSXT | 制造商:Infineon Technologies 功能描述:LDO Regulator Pos 5V 0.18A 8-Pin DSO |
| TLE4268GSXUMA1 | 制造商:Infineon Technologies AG 功能描述:LDO Regulator Pos 5V 0.18A 8-Pin DSO 制造商:Infineon Technologies AG 功能描述:LINEAR VOLTAGE REGULATOR - Tape and Reel 制造商:Infineon Technologies AG 功能描述:LINEAR VOLTAGE REGULATOR - Cut TR (SOS) |
| TLE4268GXT | 功能描述:低壓差穩(wěn)壓器 - LDO 5-V Low Drop Fixed Voltage Regulator RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TLE4268GXUMA1 | 制造商:Infineon Technologies AG 功能描述:LINEAR VOLTAGE REGULATOR - Tape and Reel |
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