Is there a low-current LDO with an input voltage greater than 5 V?
We have released the low-current TCR1HF Series. This series is compatible with high-input-voltage (~ 36 V).
Main product specifications are as follows.
| Part number | TCR1HF18B | TCR1HF33B | TCR1HF50B | ||
|---|---|---|---|---|---|
| Package | Name | SOT-25 (SMV) | |||
| Size typ. (mm) | 2.8 × 2.9, t=1.1 | ||||
| Operating ranges | Input voltage VIN (V) | 4 to 36 | |||
| Operation temperature Topr (°C) | -40 to 125 | ||||
| Electrical characteristics (Unless otherwise specified, Tj=25°C) |
Output voltage VOUT typ. (V) | 1.8 | 3.3 | 5.0 | |
| Output voltage accuracy VOUT (%) |
IOUT=10mA | ±1 | |||
| Quiescent current IBON typ. (μA) |
IOUT=0mA | 1 | |||
| Stand-by current IB(OFF1) typ. (μA) |
VIN=4V | 0.24 | |||
| Load transient response ⊿VOUT typ. (mV) |
IOUT=0mA→10mA | -60 | |||
| IOUT=10mA→0mA | 50 | ||||
| Thermal shutdown threshold TSDH (°C) | Tj rising | 155 | |||
| Sample Check & Availability |  |
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An example application is shown below. 12 V or 24 V power supplies provide direct power to low-voltage appliances below 5 V.
Application Examples
Ultra-low current consumption solution in standby mode
Power can be supplied directly to the controller IC from a high-voltage source with low current dissipation.
Related Links
The following documents also contain related information.
Product Lists
Application Notes
- Basics of Low-Dropout (LDO) Regulator ICs (PDF:1.45MB)
- LDO Regulator Application to Power Supply Circuits for MCUs (PDF:2.62MB)
- Thermal Design to Maximize the Performance of LDO Regulators (PDF:768KB)
- Simple Guide to Improving Ripple Rejection Ratio of LDO Regulators (PDF:1.30MB)
- Mechanism of LDO Oscillation and Reducing the Susceptibility to Oscillation (PDF:1.43MB)
- LDO Regulators Glossary (PDF:388KB)
- Power Efficiency Optimization and Application Circuits Using Dual-power-supply LDO Regulators (PDF:824KB)
- Improving the Load Transient Response of LDOs (PDF1.24MB)
- LDO Regulator Application to Power Supply Circuits for Digital Cores of CMOS Image Sensors (PDF:2.50MB)
- LDO Regulator Application to Power Supplies for High-Frequency Circuits (PDF:3.55MB)
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