component
LP38693MP-ADJ
Public Made by Adomby adom
Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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LP38693MP-ADJ
Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-5
LP38693MP-ADJ from Texas Instruments, in a SOT-223-5. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | EN | input | The EN pin allows the part to be turned to an ON or OFF state by pulling this pin high or low. |
| 2 | ADJ | passive | The ADJ pin sets the regulated output voltage through external resistors R1 and R2, with VOUT = VADJ × (1 + R1/R2). |
| 3 | OUT | power_out | Regulated output voltage of the regulator. |
| 4 | IN | power_in | This is the input supply voltage to the regulator, specified at 2.7 V to 10 V VIN supply voltage in the recommended operating conditions. |
| 5 | GND | power_in | Circuit ground for the regulator; for the SOT-223 package it is thermally connected to the die and functions as a heat sink when soldered to a large copper plane. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-223-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| ADJ pin voltage | VADJ | 1.225 | 1.25 | 1.275 | V | VIN = 2.7 V | 5 |
| ADJ pin voltage | VADJ | 1.2 | 1.3 | V | 3.2 V ≤ VIN ≤ 10 V, 100 µA < IL < 0.5 A; Full operating temperature range | 5 | |
| Output voltage line regulation | ΔVOUT/ΔVIN | 0.1 | %/V | VOUT + 0.5 V ≤ VIN ≤ 10 V, IL = 25 mA; Full operating temperature range | 5 | ||
| Output voltage load regulation | ΔVOUT/ΔIL | 5 | %/A | 1 mA < IL < 0.5 A, VIN = VOUT + 1 V; Full operating temperature range | 5 | ||
| Dropout voltage (VOUT = 2.5 V) | VDO | 80 | mV | IL = 0.1 A | 5 | ||
| Dropout voltage (VOUT = 2.5 V) | VDO | 430 | mV | IL = 0.5 A | 5 | ||
| Dropout voltage (VOUT = 2.5 V) | VDO | 145 | mV | IL = 0.1 A; Full operating temperature range | 5 | ||
| Dropout voltage (VOUT = 2.5 V) | VDO | 725 | mV | IL = 0.5 A; Full operating temperature range | 5 | ||
| Dropout voltage (VOUT = 3.3 V) | VDO | 65 | mV | IL = 0.1 A | 5 | ||
| Dropout voltage (VOUT = 3.3 V) | VDO | 330 | mV | IL = 0.5 A | 5 | ||
| Dropout voltage (VOUT = 3.3 V) | VDO | 110 | mV | IL = 0.1 A; Full operating temperature range | 5 | ||
| Dropout voltage (VOUT = 3.3 V) | VDO | 550 | mV | IL = 0.5 A; Full operating temperature range | 5 | ||
| Dropout voltage (VOUT = 5 V) | VDO | 45 | mV | IL = 0.1 A | 5 | ||
| Dropout voltage (VOUT = 5 V) | VDO | 250 | mV | IL = 0.5 A | 5 | ||
| Dropout voltage (VOUT = 5 V) | VDO | 100 | mV | IL = 0.1 A; Full operating temperature range | 5 | ||
| Dropout voltage (VOUT = 5 V) | VDO | 450 | mV | IL = 0.5 A; Full operating temperature range | 5 | ||
| Quiescent current | IQ | 55 | µA | VIN ≤ 10 V, IL = 100 µA, 0.5 A | 5 | ||
| Quiescent current | IQ | 100 | µA | VIN ≤ 10 V, IL = 100 µA, 0.5 A; Full operating temperature range | 5 | ||
| Minimum load current | IL(MIN) | 100 | µA | VIN, VOUT ≤ 4 V; Full operating temperature range | 5 | ||
| Foldback current limit | IFB | 350 | mA | VIN, VOUT > 5 V | 5 | ||
| Foldback current limit | IFB | 850 | mA | VIN, VOUT < 4 V | 5 | ||
| ADJ input leakage current | IADJ | -100 | 0.01 | 100 | nA | VADJ = 0 V to 1.5 V, VIN = 10 V | 5 |
| Enable voltage (LP38693 only) | VEN | 0.4 | V | Output = OFF state; Full operating temperature range | 6 | ||
| Enable voltage (LP38693 only) | VEN | 1.8 | V | Output = ON state, VIN = 4 V; Full operating temperature range | 6 | ||
| Enable voltage (LP38693 only) | VEN | 3 | V | Output = ON state, VIN = 6 V; Full operating temperature range | 6 | ||
| Enable voltage (LP38693 only) | VEN | 4 | V | Output = ON state, VIN = 10 V; Full operating temperature range | 6 | ||
| EN pin leakage (LP38693 only) | IEN | -1 | 0.001 | 1 | µA | VEN = 0 V or 10 V, VIN = 10 V | 6 |
| Enable pin current (LP38693 only) for VEN ≤ 0.4 V | IQ | 0.001 | 1 | µA | VEN ≤ 0.4 V (LP38693 Only) | 5 | |
| Output leakage current | VOUT(LEAK) | 0.5 | 2 | µA | VOUT = VOUT(NOM) + 1 V at 10 VIN | 5 | |
| Thermal shutdown activation (junction temp) | TSD | 160 | °C | 5 | |||
| Thermal shutdown hysteresis (junction temp) | TSD(HYST) | 10 | °C | 5 | |||
| Ripple rejection | PSRR | 55 | dB | VIN = VOUT + 2 V(DC), with 1 V(p-p) / 120-Hz Ripple | 5 | ||
| Output noise | en | 0.7 | µV/√Hz | BW = 10 Hz to 10 kHz, VOUT = 3.3 V | 5 | ||
| VIN supply voltage | VIN | 2.7 | 10 | V | 4 | ||
| Operating junction temperature | TJ | -40 | 125 | °C | 4 | ||
| All pins (with respect to GND) | V(MAX) | -0.3 | 12 | V | 4 | ||
| Junction temperature | TJ | -40 | 150 | °C | 4 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| Junction-to-ambient thermal resistance (SOT-223, High-K) | RθJA | 68.5 | °C/W | 4 | |||
| Junction-to-case (top) thermal resistance (SOT-223) | RθJC(top) | 52.2 | °C/W | 4 | |||
| Junction-to-board thermal resistance (SOT-223) | RθJB | 13 | °C/W | 4 | |||
| Junction-to-top characterization parameter (SOT-223) | ψJT | 5.5 | °C/W | 4 | |||
| Junction-to-board characterization parameter (SOT-223) | ψJB | 12.8 | °C/W | 4 |
CAD (KiCad official)
- Symbol:
LP38693MP-ADJ - Footprint:
Package_TO_SOT_SMD:SOT-223-5 - 3D model: SOT-223-5 (KiCad packages3D, STEP)
- 3D model files:
lp38693mp-adj-etched.step/lp38693mp-adj-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lp38693mp-adj.step/lp38693mp-adj.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (27 pp, sha256
6ac2c1455ff27514, retrieved 2026-11-05, tier: manufacturer) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).