component
LMR51635YDDCR
Public Made by Adomby adom
Texas Instruments DC-DC Converters, TSOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "LMR51635YDDCR",
"brief": "Texas Instruments DC-DC Converters, TSOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"manufacturer": "Texas Instruments",
"package": "TSOT-23-6",
"pin_count": 6,
"category": "Power Management (PMIC)",
"subcategory": "DC-DC Converters",
"datasheet": "https://www.ti.com.cn/cn/lit/ds/symlink/lmr51635.pdf",
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"digikey": "296-LMR51635YDDCRTR-ND",
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"name": "FB",
"type": "input",
"description": "Converter feedback input; connect a resistor divider here to set the output voltage, and do not short this pin to ground during operation."
},
{
"number": "2",
"name": "EN",
"type": "input",
"description": "Precision enable input that must not be left floating: high turns the converter on and low turns it off, it may be tied to VIN, and an external divider can set an adjustable UVLO."
},
{
"number": "3",
"name": "VIN",
"type": "power_in",
"description": "Input supply pin for the internal bias LDO and high-side FET; connect it to the input supply and to the input bypass capacitor CIN, which must be connected directly to this pin and GND."
},
{
"number": "4",
"name": "GND",
"type": "power_in",
"description": "Power ground, internally connected to the low-side FET source; connect it to system ground and to the ground side of CIN and COUT, keeping the connection to CIN as short as possible."
},
{
"number": "5",
"name": "SW",
"type": "output",
"description": "Converter switching output, internally connected to the high-side FET source and low-side FET drain; connect it to the power inductor."
},
{
"number": "6",
"name": "CB",
"type": "passive",
"description": "Bootstrap capacitor connection for the high-side FET driver; a 100 nF high-quality capacitor must be connected between this pin and SW."
}
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"Package": "TSOT-23-6",
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"name": "Input voltage VIN to GND (absolute maximum)",
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"name": "Input voltage EN to GND (absolute maximum)",
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"name": "Output voltage SW to GND (absolute maximum, transient)",
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{
"name": "Output voltage CB to SW (absolute maximum)",
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{
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{
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{
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{
"name": "Input voltage EN (recommended operating)",
"symbol": "",
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"unit": "V",
"min": 0,
"typ": null,
"max": null,
"conditions": "Printed as VIN V",
"source_page": 4,
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{
"name": "Input voltage FB (recommended operating)",
"symbol": "",
"kind": "recommended_operating",
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{
"name": "Output voltage VOUT (recommended operating)",
"symbol": "VOUT",
"kind": "recommended_operating",
"unit": "V",
"min": 0.8,
"typ": null,
"max": 30,
"conditions": "Output voltage must never drop below zero volts",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Output current IOUT (LM51635, recommended operating)",
"symbol": "IOUT",
"kind": "recommended_operating",
"unit": "A",
"min": null,
"typ": null,
"max": 3.5,
"conditions": "Maximum continuous DC current may derate at high switching frequency or high ambient temperature",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Operating junction temperature TJ (recommended operating)",
"symbol": "TJ",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
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"conditions": "",
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{
"name": "IQ(VIN) VIN quiescent current (non-switching)",
"symbol": "IQ(VIN)",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 26,
"max": 46,
"conditions": "VEN = 3V, PFM version only",
"source_page": 5,
"source": "datasheet"
},
{
"name": "VIN UVLO rising threshold",
"symbol": "VIN_UVLO(R)",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 4,
"max": 4.25,
"conditions": "VIN rising",
"source_page": 5,
"source": "datasheet"
},
{
"name": "EN voltage rising threshold",
"symbol": "VEN(R)",
"kind": "electrical",
"unit": "V",
"min": 1.103,
"typ": 1.226,
"max": 1.349,
"conditions": "EN rising, enables switching",
"source_page": 5,
"source": "datasheet"
},
{
"name": "EN voltage falling threshold",
"symbol": "VEN(F)",
"kind": "electrical",
"unit": "V",
"min": 0.887,
"typ": 0.985,
"max": 1.084,
"conditions": "EN falling, disables switching",
"source_page": 5,
"source": "datasheet"
},
{
"name": "EN pin pull-up current / EN rising threshold after pull-up",
"symbol": "IEN(P2)",
"kind": "electrical",
"unit": "nA",
"min": null,
"typ": 10,
"max": 50,
"conditions": "VEN = 3V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Internal reference voltage VFB",
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"kind": "electrical",
"unit": "V",
"min": 0.792,
"typ": 0.8,
"max": 0.808,
"conditions": "",
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"source": "datasheet"
},
{
"name": "Switching frequency, CCM operation, Y version",
"symbol": "fSW1(CCM)",
"kind": "electrical",
"unit": "MHz",
"min": 0.99,
"typ": 1.1,
"max": 1.21,
"conditions": "VIN = 24V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Switching frequency dither (PFM option, around center frequency)",
"symbol": "FDither",
"kind": "electrical",
"unit": "%",
"min": -8.5,
"typ": null,
"max": 8.5,
"conditions": "PFM option, frequency dither around center frequency (printed ±8.5%)",
"source_page": 5,
"source": "datasheet"
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{
"name": "High-side peak current limit, 3.5A version",
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"unit": "A",
"min": 4.2,
"typ": 5.1,
"max": 6,
"conditions": "3.5A version",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Low-side valley current limit, 3.5A version",
"symbol": "ILS_V(OC)",
"kind": "electrical",
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"min": 3.2,
"typ": 4,
"max": 4.8,
"conditions": "3.5A version",
"source_page": 6,
"source": "datasheet"
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{
"name": "RθJA junction-to-ambient thermal resistance",
"symbol": "RθJA",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 105.2,
"max": null,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "RθJA(effective) junction-to-ambient thermal resistance (TI EVM)",
"symbol": "RθJA(effective)",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 48.5,
"max": null,
"conditions": "TI EVM",
"source_page": 5,
"source": "datasheet"
},
{
"name": "RθJC(top) junction-to-case (top) thermal resistance",
"symbol": "RθJC(top)",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 49.8,
"max": null,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "RθJB junction-to-board thermal resistance",
"symbol": "RθJB",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 24.1,
"max": null,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "ψJT junction-to-top characterization parameter",
"symbol": "ψJT",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 6.2,
"max": null,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "ψJB junction-to-board characterization parameter",
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"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 23.9,
"max": null,
"conditions": "",
"source_page": 5,
"source": "datasheet"
}
]
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