Key facts
- Brand
- HTC
- Model
- LM39301
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-03-28
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HTC LM39300/39301/39302 Low‑Dropout Regulator Datasheet
The LM39300/39301/39302 family are 3 A low‑voltage low‑dropout (LDO) linear regulators offered in TO‑263 and TO‑220 packages. They deliver fixed output voltages of 1.5 V, 1.8 V, 2.5 V, 3.3 V and 5.0 V, with an adjustable version covering 1.25 V to 16 V. Typical dropout is 500 mV at full load, making them suitable for PC add‑in cards and battery‑powered systems.
Key features include 1 % initial accuracy, low ground current, current limiting, thermal shutdown, reversed‑battery and reversed‑leakage protection, and a TTL/CMOS‑compatible enable pin on the LM39301. The LM39301 also provides an open‑collector error‑flag output, while the LM39302 offers programmable output voltage.
HTC LM39301 specifications
| Typical dropout voltage | 500 mV at 3 A |
|---|---|
| Maximum output current | 3 A |
| Ground current (typical) | 36 mA at 3 A |
| Input voltage range | +2.25 V to +16 V |
| Enable voltage (logic high) | 2.25 V |
| Package types | TO‑263‑3L / TO‑220‑3L (fixed) and TO‑263‑5L / TO‑220‑5L (adjustable) |
| Fixed output voltages | 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5.0 V |
| Adjustable output range | 1.25 V to 16 V |
Source: HTC LM39300/39301/39302 Low‑Dropout Regulator Datasheet
All HTC LM39301 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the typical dropout voltage of the LM39300 at full load?
It is typically 500 mV when delivering 3 A.
From: HTC LM39300/39301/39302 Low‑Dropout Regulator Datasheet
What protection features are included in the LM39300 series?
The devices provide over‑current limiting, thermal shutdown, reversed‑battery protection, reversed‑leakage protection, and reversed‑lead insertion.
From: HTC LM39300/39301/39302 Low‑Dropout Regulator Datasheet
What is the typical dropout voltage at full load?
The regulator has a typical dropout of 500 mV when delivering 3 A.
What minimum load current is required for proper regulation?
A minimum load current of 10 mA is necessary for proper regulation.