component
LM2660MM
Public Made by Adomby adom
Texas Instruments DC-DC Converters, VSSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM2660MM
Texas Instruments · DC-DC Converters · VSSOP-8
LM2660MM from Texas Instruments, in a VSSOP-8. 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 | FC | input | Selects the internal oscillator frequency: open gives fOSC = 10 kHz (typ), tying to V+ gives 80 kHz (typ), and it has no effect when OSC is driven externally. |
| 2 | CAP+ | passive | Connect to the positive terminal of the charge-pump capacitor (same in inverter and doubler modes). |
| 3 | GND | power_in | Power supply ground input in voltage-inverter mode; the datasheet lists this pin as the power supply positive voltage input in voltage-doubler mode. |
| 4 | CAP− | passive | Connect to the negative terminal of the charge-pump capacitor (same in inverter and doubler modes). |
| 5 | OUT | power_out | Negative voltage output in inverter mode (absolute maximum continuous output current 120 mA; OUT may be shorted to GND for one second only); the datasheet lists it as the power supply ground input in doubler mode. |
| 6 | LV | input | Low-voltage operation input: tie to GND when the input voltage is below 3.5 V, may be tied to GND or left open above 3.5 V, and must be connected to GND when OSC is driven by an external clock. |
| 7 | OSC | input | Oscillator control input connected to an internal 15-pF capacitor, where an external capacitor slows the oscillator or an external clock (up to 150 kHz) can drive it; in doubler mode it cannot be driven by an external clock. |
| 8 | V+ | power_in | Power supply positive voltage input (1.5 V to 5.5 V in inverter mode with LV tied to GND); the datasheet lists it as the positive voltage output in doubler mode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | VSSOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage (V+ to GND, or GND to OUT) | 6 | V | Over operating free-air temperature range | 4 | |||
| V+ and OUT continuous output current | 120 | mA | 4 | ||||
| Output short-circuit duration to GND | 1 | s | OUT shorted to GND | 4 | |||
| Power dissipation VSSOP (DGK) | 500 | mW | VSSOP (DGK) package | 4 | |||
| Lead temperature (soldering) | 300 | °C | Soldering, 10 seconds | 4 | |||
| Operating junction temperature | -40 | 85 | °C | 4 | |||
| V+ supply voltage, Inverter | V+ | 3.5 | 5.5 | V | Inverter, LV = Open | 4 | |
| V+ supply voltage, Inverter | V+ | 1.5 | 5.5 | V | Inverter, LV = GND | 4 | |
| V+ supply voltage, Doubler | V+ | 2.5 | 5.5 | V | Doubler, LV = OUT | 4 | |
| Junction temperature | TJ | -40 | 85 | °C | 4 | ||
| V+ supply voltage, Inverter | V+ | 3.5 | 5.5 | V | RL = 1k, Inverter, LV = Open | 5 | |
| V+ supply voltage, Inverter | V+ | 1.5 | 5.5 | V | RL = 1k, Inverter, LV = GND | 5 | |
| V+ supply voltage, Doubler | V+ | 2.5 | 5.5 | V | RL = 1k, Doubler, LV = OUT | 5 | |
| Supply current | IQ | 0.12 | 0.5 | mA | No Load, FC = Open | 5 | |
| Supply current | IQ | 1 | 3 | mA | LV = Open, FC = V+ | 5 | |
| Output current | IL | 100 | mA | TA ≤ 85°C, OUT ≤ −4 V | 5 | ||
| Output resistance | ROUT | 6.5 | 10 | Ω | IL = 100 mA, TA ≤ 85°C | 5 | |
| Output resistance | ROUT | 12 | Ω | IL = 100 mA, TA > 85°C | 5 | ||
| Oscillator frequency | fOSC | 5 | 10 | kHz | FC = Open, OSC = Open | 5 | |
| Oscillator frequency | fOSC | 40 | 80 | kHz | FC = V+, OSC = Open | 5 | |
| Switching frequency | fSW | 2.5 | 5 | kHz | FC = Open, OSC = Open | 5 | |
| Switching frequency | fSW | 20 | 40 | kHz | FC = V+, OSC = Open | 5 | |
| OSC input current | IOSC | -2 | 2 | µA | FC = Open | 5 | |
| OSC input current | IOSC | -16 | 16 | µA | FC = V+ | 5 | |
| Power efficiency | PEFF | 96 | 98 | % | RL (1k) between V+ and OUT | 5 | |
| Power efficiency | PEFF | 92 | 96 | % | RL (500) between GND and OUT | 5 | |
| Voltage conversion efficiency | VOEFF | 99 | 99.96 | % | No Load | 5 | |
| Voltage conversion efficiency | VOEFF | 88 | % | IL = 100 mA to GND | 5 | ||
| Junction-to-ambient thermal resistance | RθJA | 250 | °C/W | VSSOP (DGK) package | 4 |
CAD (KiCad official)
- Symbol:
LM2660MM - Footprint:
Package_SO:VSSOP-8_2.3x2mm_P0.5mm - 3D model: VSSOP-8 (KiCad packages3D, STEP)
- 3D model files:
lm2660mm-etched.step/lm2660mm-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2660mm.step/lm2660mm.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (31 pp, sha256
32dc6d4757c2b1c7, retrieved 2026-10-20, tier: lcsc) - 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).