Product overview
Description
The KF series are very low drop regulators available in SO-8 and DPAK packages and in a wide range of output voltages.
The very low dropout voltage (0.4 V) and the very low quiescent current make them particularly suitable for low noise, low power applications and especially in battery powered systems.
A shutdown logic control function is available (pin 5, TTL compatible). This means that when the device is used as a local regulator, it is possible to put a part of the board in standby, decreasing the total power consumption. It requires only a 2.2 μF capacitor for stability allowing space and cost saving.
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All features
- Very low dropout voltage (0.4 V)
- Very low quiescent current (typ. 50 μA in OFF mode, 500 μA in ON mode)
- Output current up to 500 mA
- Logic-controlled electronic shutdown
- Output voltages of 2.5; 3.3; 5; 8 V
- Internal current and thermal limit
- Only 2.2 μF for stability
- Available in ± 2 % accuracy at 25 °C
- Supply voltage rejection: 70 db (typ.)
- Temperature range: - 40 to 125 °C
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STMicroelectronics - KFXX
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3D models
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| KF25BD-TR | Active | SO-8 | Industrial | Ecopack2 | |
| KF25BDT-TR | Active | DPAK | Industrial | Ecopack2 | |
| KF33BD-TR | Active | SO-8 | Industrial | Ecopack2 | |
| KF33BDT-TR | Active | DPAK | Industrial | Ecopack2 | |
| KF50BD-TR | Active | SO-8 | Industrial | Ecopack2 | |
| KF50BDT-TR | Active | DPAK | Industrial | Ecopack2 | |
| KF80BDT-TR | Active | DPAK | Industrial | Ecopack2 | |
KF25BD-TR
Package:
SO-8Material Declaration**:
KF33BD-TR
Package:
SO-8Material Declaration**:
KF80BDT-TR
Package:
DPAKMaterial Declaration**:
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | Grade | Output Voltage (V) (nom) | Output Tolerance (typ) | Output Current (A) (nom) | ||
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| KF33BD-TR | | | distributors No availability of distributors reported, please contact our sales office |
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| KF80BDT-TR | | | distributors No availability of distributors reported, please contact our sales office |
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| KF50BDT-TR | | | distributors No availability of distributors reported, please contact our sales office |
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| KF50BD-TR | | | distributors No availability of distributors reported, please contact our sales office |
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| KF25BD-TR | | | distributors No availability of distributors reported, please contact our sales office |
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| KF25BDT-TR | | | distributors No availability of distributors reported, please contact our sales office |
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| KF33BDT-TR | | | distributors No availability of distributors reported, please contact our sales office |
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KF33BD-TR Active
KF80BDT-TR Active
KF50BDT-TR Active
KF50BD-TR Active
KF25BD-TR Active
KF25BDT-TR Active
KF33BDT-TR Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors