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MCP1259T-E
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Microchip Tech DC-DC Converters, MSOP-10. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MCP1259T-E
Microchip Tech · DC-DC Converters · MSOP-10
MCP1259T-E from Microchip Tech, in a MSOP-10. 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 | LBO | output | Low-battery indication open-drain output that is asserted low when VIN falls below the low-battery threshold, remains low until VIN exceeds the threshold plus hysteresis, and is high impedance when SHDN or BYPASS is low. |
| 2 | BYPASS | input | Active-low BYPASS mode input; a logic low connects the input supply VIN directly to VOUT, with the rest of the device shut down. |
| 3 | C2- | passive | Flying capacitor negative terminal; a 1 µF ceramic flying capacitor is recommended. |
| 4 | C1+ | passive | Flying capacitor positive terminal; a 1 µF ceramic flying capacitor is recommended. |
| 5 | VOUT | power_out | Regulated 3.3 V output, which should be bypassed to GND with a minimum of 2.2 µF. |
| 6 | C2+ | passive | Flying capacitor positive terminal; a 1 µF ceramic flying capacitor is recommended. |
| 7 | VIN | power_in | Power supply input, recommended at 1.8 V to 3.6 V, to be bypassed to GND with a minimum of 1 µF. |
| 8 | C1- | passive | Flying capacitor negative terminal; a 1 µF ceramic flying capacitor is recommended. |
| 9 | GND | power_in | 0 V reference, to be connected to the negative terminal of the input supply. |
| 10 | SHDN | input | Active-low shutdown input; a logic low disables the device and a logic high allows normal operation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | MSOP-10 |
| Category | Power Management ICs |
| Pins | 10 |
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 | VIN | 1.8 | 3.6 | V | 3 | ||
| Output Voltage Accuracy | VOUT | -3 | 0.5 | 3 | % | IOUT = 10 mA to IOUT(MAX) | 3 |
| Output Current | IOUT(MAX) | 30 | mA | 1.8V < VIN < 2.0V | 3 | ||
| Output Current | IOUT(MAX) | 70 | mA | 2.0V < VIN < 2.2V | 3 | ||
| Output Current | IOUT(MAX) | 100 | mA | 2.2V < VIN < 3.6V | 3 | ||
| SHDN Input Voltage Low | VIL(SHDN) | 0.4 | V | 3 | |||
| SHDN Input Voltage High | VIH(SHDN) | 1.4 | V | 3 | |||
| SHDN Input Leakage Current | ILK(SHDN) | 0.001 | 0.1 | µA | 3 | ||
| SHDN Quiescent Current | IQ | 0.25 | 2 | µA | VSHDN = 0V, TJ = +25°C | 3 | |
| BYPASS Input Voltage Low | VIL(BYPASS) | 0.4 | V | 4 | |||
| BYPASS Input Voltage High | VIH(BYPASS) | 1.4 | V | 4 | |||
| BYPASS Input Leakage Current | ILK(BYPASS) | 0.001 | 0.1 | µA | 4 | ||
| BYPASS Quiescent Current | IQ | 0.25 | 2 | µA | VBYPASS = 0V, IOUT = 0 mA, TJ = +25°C | 4 | |
| LBO Output Low Voltage | VOL | 25 | 100 | mV | ISINK = 0.5 mA, VIN = 1.8V | 4 | |
| LBO Input Leakage Current | ILK(LBO) | 0.02 | 1 | µA | VLBO = VIN | 4 | |
| Voltage on Any Pin w.r.t. GND | -0.3 | V | Upper limit printed as VIN+0.3V (not a fixed number) | 3 | |||
| Storage Temperature Range | TS | -65 | 150 | °C | 3 | ||
| Ambient Temperature with Power Applied | TA | -55 | 125 | °C | 3 | ||
| Maximum Junction Temperature | TJ | 150 | °C | 3 | |||
| ESD Human Body Model | 2 | kV | 1.5 kΩ in series with 100 pF | 3 | |||
| ESD Machine Model | 200 | V | 200 pF, no series resistance | 3 | |||
| Specified Temperature Range | TJ | -40 | 125 | °C | 5 | ||
| Operating Temperature Range | TJ | -40 | 125 | °C | 5 | ||
| Thermal Resistance, 10-Lead MSOP | JA | 200 | °C/W | 4-Layer JC51-7 Standard Board, Natural Convection | 5 |
CAD (KiCad official)
- Symbol:
MCP1259T-E - Footprint:
Package_SO:MSOP-10_3x3mm_P0.5mm - 3D model: MSOP-10 (KiCad packages3D, STEP)
- 3D model files:
mcp1259t-e-etched.step/mcp1259t-e-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mcp1259t-e.step/mcp1259t-e.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (24 pp, sha256
3a0b2d1cabc1160d, retrieved 2026-10-30, tier: manufacturer) - 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).
# MCP1259T-E
**Microchip Tech** · DC-DC Converters · MSOP-10
MCP1259T-E from Microchip Tech, in a MSOP-10. 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 | LBO | output | Low-battery indication open-drain output that is asserted low when VIN falls below the low-battery threshold, remains low until VIN exceeds the threshold plus hysteresis, and is high impedance when SHDN or BYPASS is low. |
| 2 | BYPASS | input | Active-low BYPASS mode input; a logic low connects the input supply VIN directly to VOUT, with the rest of the device shut down. |
| 3 | C2- | passive | Flying capacitor negative terminal; a 1 µF ceramic flying capacitor is recommended. |
| 4 | C1+ | passive | Flying capacitor positive terminal; a 1 µF ceramic flying capacitor is recommended. |
| 5 | VOUT | power_out | Regulated 3.3 V output, which should be bypassed to GND with a minimum of 2.2 µF. |
| 6 | C2+ | passive | Flying capacitor positive terminal; a 1 µF ceramic flying capacitor is recommended. |
| 7 | VIN | power_in | Power supply input, recommended at 1.8 V to 3.6 V, to be bypassed to GND with a minimum of 1 µF. |
| 8 | C1- | passive | Flying capacitor negative terminal; a 1 µF ceramic flying capacitor is recommended. |
| 9 | GND | power_in | 0 V reference, to be connected to the negative terminal of the input supply. |
| 10 | SHDN | input | Active-low shutdown input; a logic low disables the device and a logic high allows normal operation. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | MSOP-10 |
| Category | Power Management ICs |
| Pins | 10 |
## 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 | VIN | 1.8 | | 3.6 | V | | 3 |
| Output Voltage Accuracy | VOUT | -3 | 0.5 | 3 | % | IOUT = 10 mA to IOUT(MAX) | 3 |
| Output Current | IOUT(MAX) | 30 | | | mA | 1.8V < VIN < 2.0V | 3 |
| Output Current | IOUT(MAX) | 70 | | | mA | 2.0V < VIN < 2.2V | 3 |
| Output Current | IOUT(MAX) | 100 | | | mA | 2.2V < VIN < 3.6V | 3 |
| SHDN Input Voltage Low | VIL(SHDN) | | | 0.4 | V | | 3 |
| SHDN Input Voltage High | VIH(SHDN) | 1.4 | | | V | | 3 |
| SHDN Input Leakage Current | ILK(SHDN) | | 0.001 | 0.1 | µA | | 3 |
| SHDN Quiescent Current | IQ | | 0.25 | 2 | µA | VSHDN = 0V, TJ = +25°C | 3 |
| BYPASS Input Voltage Low | VIL(BYPASS) | | | 0.4 | V | | 4 |
| BYPASS Input Voltage High | VIH(BYPASS) | 1.4 | | | V | | 4 |
| BYPASS Input Leakage Current | ILK(BYPASS) | | 0.001 | 0.1 | µA | | 4 |
| BYPASS Quiescent Current | IQ | | 0.25 | 2 | µA | VBYPASS = 0V, IOUT = 0 mA, TJ = +25°C | 4 |
| LBO Output Low Voltage | VOL | | 25 | 100 | mV | ISINK = 0.5 mA, VIN = 1.8V | 4 |
| LBO Input Leakage Current | ILK(LBO) | | 0.02 | 1 | µA | VLBO = VIN | 4 |
| Voltage on Any Pin w.r.t. GND | | -0.3 | | | V | Upper limit printed as VIN+0.3V (not a fixed number) | 3 |
| Storage Temperature Range | TS | -65 | | 150 | °C | | 3 |
| Ambient Temperature with Power Applied | TA | -55 | | 125 | °C | | 3 |
| Maximum Junction Temperature | TJ | | | 150 | °C | | 3 |
| ESD Human Body Model | | | | 2 | kV | 1.5 kΩ in series with 100 pF | 3 |
| ESD Machine Model | | | | 200 | V | 200 pF, no series resistance | 3 |
| Specified Temperature Range | TJ | -40 | | 125 | °C | | 5 |
| Operating Temperature Range | TJ | -40 | | 125 | °C | | 5 |
| Thermal Resistance, 10-Lead MSOP | JA | | 200 | | °C/W | 4-Layer JC51-7 Standard Board, Natural Convection | 5 |
## CAD (KiCad official)
- Symbol: `MCP1259T-E`
- Footprint: `Package_SO:MSOP-10_3x3mm_P0.5mm`
- 3D model: MSOP-10 (KiCad packages3D, STEP)
- 3D model files: `mcp1259t-e-etched.step` / `mcp1259t-e-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mcp1259t-e.step` / `mcp1259t-e.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Microchip Tech datasheet](docs/mcp1259t-e-datasheet.pdf) (24 pp, sha256 `3a0b2d1cabc1160d`, retrieved 2026-10-30, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/mcp1259t-e-datasheet.pdf)