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Hello, Please ask a question about LE40C Datasheet
# Example questions:
➢ For the le00ab/c and le15ab series, what is the typical output noise voltage (en) across the 10 hz to 100 khz frequency band? how might this noise affect sensitive analog circuits?
➢ Considering the quiescent current (id) specifications in both on and off modes, how do these values impact the overall power efficiency of the le00ab/c, le15ab and le15c series in battery-powered applications?
➢ Compare and contrast the dropout voltage specifications for the le00ab/c, le15ab, and le15c series. what are the respective values and potential implications of these differences?
| Part No. | LE40C |
| Manufacturer | STMICROELECTRONICS |
| Size | 207 Kbytes |
| Pages | 27 pages |
| Description | VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT |
Okay, here's a summary of the provided electrical characteristics tables for the LE00AB/C, LE15AB, LE15C series, focusing on key differences and commonalities. I'll organize it for clarity.
I. Common Characteristics (Across All Series)
️· Operating Input Voltage (V<sub>I</sub>): 2.5V to 18V
️· Output Current Limit (I<sub>O</sub>): 150 mA
️· Quiescent Current (I<sub>d</sub>) – ON Mode: 0.5 mA (Typ) to 1 mA (Max)
️· Quiescent Current (I<sub>d</sub>) – OFF Mode: 50 µA (Typ) to 100 µA (Max)
️· Control Input Logic Low (V<sub>IL</sub>): 0.8V
️· Control Input Logic High (V<sub>IH</sub>): 2V
️· Control Input Current (I<sub>I</sub>): 10 µA
️· Output Bypass Capacitance (C<sub>O</sub>): 2 µF to 10 µF
️· Supply Voltage Rejection (SVR):
- 120 Hz: 82 dB
- 1 kHz: 77 dB
- 10 kHz: 60 dB
️· Output Noise Voltage (e<sub>N</sub>): 50 µV (10 Hz to 100 kHz)
II. Key Differences Between Series
| Characteristic | LE00AB/C | LE15AB | LE15C |
| --------------------------- | ----------------- | ---------------- | --------------- |
| Output Voltage (V<sub>O</sub>) | 1.5V ± 3% | 1.5V ± 3% | *Not Specified* |
| V<sub>O</sub> at I<sub>O</sub>=10mA | 1.5V ± 0.03V | 1.5V ± 0.03V | 1.47 - 1.53V |
| Line Regulation (ΔV<sub>O</sub>) | 3 mV | 15 mV | *Not Specified* |
| Load Regulation (ΔV<sub>O</sub>) | 3 mV | 15 mV | *Not Specified* |
| Dropout Voltage (V<sub>d</sub>) at I<sub>O</sub> = 100mA | *Not Specified* | *Not Specified* | 1V |
III. Important Observations & Notes
️· LE15C is incomplete: The information provided for LE15C lacks specific data for some parameters (output voltage, line regulation, load regulation).
️· Output Voltage Variations: All models specify output voltages around 1.5V, with relatively tight tolerances (+/- 3%).
️· Regulation: LE00AB/C demonstrates significantly better line and load regulation compared to LE15AB, implying a more stable output voltage under varying input and load conditions.
️· Dropout Voltage: LE15C has a defined dropout voltage of 1V. Dropout voltage defines how low the input voltage can be before the output voltage drops below the specified level.
In summary: The LE00AB/C seems to be designed for applications requiring very stable output voltages (due to its better regulation), while the LE15AB and LE15C offer a similar feature set with slightly looser specifications. LE15C, however, has missing data points, making a direct comparison difficult.
I. Common Characteristics (Across All Series)
️· Operating Input Voltage (V<sub>I</sub>): 2.5V to 18V
️· Output Current Limit (I<sub>O</sub>): 150 mA
️· Quiescent Current (I<sub>d</sub>) – ON Mode: 0.5 mA (Typ) to 1 mA (Max)
️· Quiescent Current (I<sub>d</sub>) – OFF Mode: 50 µA (Typ) to 100 µA (Max)
️· Control Input Logic Low (V<sub>IL</sub>): 0.8V
️· Control Input Logic High (V<sub>IH</sub>): 2V
️· Control Input Current (I<sub>I</sub>): 10 µA
️· Output Bypass Capacitance (C<sub>O</sub>): 2 µF to 10 µF
️· Supply Voltage Rejection (SVR):
- 120 Hz: 82 dB
- 1 kHz: 77 dB
- 10 kHz: 60 dB
️· Output Noise Voltage (e<sub>N</sub>): 50 µV (10 Hz to 100 kHz)
II. Key Differences Between Series
| Characteristic | LE00AB/C | LE15AB | LE15C |
|---|---|---|---|
| Output Voltage (V<sub>O</sub>) | 1.5V ± 3% | 1.5V ± 3% | *Not Specified* |
| V<sub>O</sub> at I<sub>O</sub>=10mA | 1.5V ± 0.03V | 1.5V ± 0.03V | 1.47 - 1.53V |
| Line Regulation (ΔV<sub>O</sub>) | 3 mV | 15 mV | *Not Specified* |
| Load Regulation (ΔV<sub>O</sub>) | 3 mV | 15 mV | *Not Specified* |
| Dropout Voltage (V<sub>d</sub>) at I<sub>O</sub> = 100mA | *Not Specified* | *Not Specified* | 1V |
| Part No. | LE40C |
| Manufacturer | STMICROELECTRONICS |
| Size | 207 Kbytes |
| Pages | 27 pages |
| Description | VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT |
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