component
BD9P155EFV-CE2
Public Made by Adomby adom
ROHM Semicon DC-DC Converters, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "BD9P155EFV-CE2",
"brief": "ROHM Semicon DC-DC Converters, HTSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
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"mpn": "BD9P155EFV-CE2",
"manufacturer": "ROHM Semicon",
"package": "HTSSOP-20-EP",
"pin_count": 21,
"category": "Power Management ICs",
"subcategory": "DC-DC Converters",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/705bc1aac3f4c1501284972a60bfdcd3.pdf",
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"lcsc": "C1518750",
"digikey": "846-BD9P155EFV-CE2TR-ND",
"mouser": "755-BD9P155EFV-CE2"
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"pins": [
{
"number": "1",
"name": "EN",
"type": "input",
"description": "Enable pin: low level of 0.8 V or lower disables the device and high level of 2.0 V or higher enables it, and it must not be left open."
},
{
"number": "2",
"name": "VIN",
"type": "power_in",
"description": "Power supply input for the internal circuit, to be connected to the PVIN pins."
},
{
"number": "3",
"name": "PVIN",
"type": "power_in",
"description": "Power supply input for the switching regulator output stage, with input ceramic capacitors connected between PGND and these pins."
},
{
"number": "4",
"name": "PVIN",
"type": "power_in",
"description": "Power supply input for the switching regulator output stage, with input ceramic capacitors connected between PGND and these pins."
},
{
"number": "5",
"name": "N.C.",
"type": "unconnected",
"description": "Not connected to the chip; leave open, and confirm no problem if adjacent pins may be shorted in the application."
},
{
"number": "6",
"name": "PGND",
"type": "power_in",
"description": "Ground pin for the switching regulator output stage."
},
{
"number": "7",
"name": "PGND",
"type": "power_in",
"description": "Ground pin for the switching regulator output stage."
},
{
"number": "8",
"name": "SW",
"type": "output",
"description": "Switching node connected to the source of the internal high-side FET and the drain of the internal low-side FET, used for the power inductor and bootstrap capacitor."
},
{
"number": "9",
"name": "SW",
"type": "output",
"description": "Switching node connected to the source of the internal high-side FET and the drain of the internal low-side FET, used for the power inductor and bootstrap capacitor."
},
{
"number": "10",
"name": "BST",
"type": "passive",
"description": "Connect a 0.1 µF (Typ) bootstrap capacitor between this pin and the SW pins, which supplies the high-side FET gate drive."
},
{
"number": "11",
"name": "OCP_SEL",
"type": "input",
"description": "Overcurrent threshold select: high (connected to VREG) sets 1.250 A (Typ) and low (connected to GND) sets 0.625 A (Typ) as the average inductor current limit."
},
{
"number": "12",
"name": "MODE",
"type": "input",
"description": "Mode select: high for forced PWM, low or open for AUTO (PWM/LLM), or a applied clock for SYNC mode."
},
{
"number": "13",
"name": "SSCG",
"type": "input",
"description": "Spread spectrum select: high (connected to VREG) enables spread spectrum and low (connected to GND) disables it."
},
{
"number": "14",
"name": "RESET",
"type": "output",
"description": "Open-drain output reset pin that requires a pull-up resistor to VREG or a supply within the RESET pin absolute maximum rating, with 5 kΩ to 100 kΩ recommended."
},
{
"number": "15",
"name": "GND",
"type": "power_in",
"description": "Ground pin for the device."
},
{
"number": "16",
"name": "VOUT_DIS",
"type": "input",
"description": "Discharges the VOUT node when connected to VOUT, and must be connected to GND when the discharge function is not required."
},
{
"number": "17",
"name": "VOUT_SNS",
"type": "input",
"description": "Inverting input of GmAmp1 used for OVP, SCP and RESET detection and for clamp and phase compensation; connect to the output voltage."
},
{
"number": "18",
"name": "N.C.",
"type": "unconnected",
"description": "Not connected to the chip for the BD9P155EFV-C; leave open, and confirm no problem if adjacent pins may be shorted in the application."
},
{
"number": "19",
"name": "VCC_EX",
"type": "power_in",
"description": "Power supply input for the internal circuit that supplies VREG when voltage between 3.2 V (VTEXH, Max) and 5.65 V (VEXOVPL, Min) is applied, and must be connected to GND if unused."
},
{
"number": "20",
"name": "VREG",
"type": "power_out",
"description": "Outputs 3.3 V (Typ) for the internal circuit, requires a 1.0 µF (Typ) ceramic capacitor, and must not drive external loads other than the OCP_SEL, MODE and SSCG pins and the RESET pull-up."
},
{
"number": "21",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
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"primary_model": "claude-haiku-5-5",
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"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
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],
"pages_sent": 13,
"cost_usd": 0.0244,
"at": "2026-11-02T17:30:53"
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"metadata": {
"specs": {
"Manufacturer": "ROHM Semicon",
"Package": "HTSSOP-20-EP",
"Category": "Power Management ICs",
"Pins": "21"
},
"appearance": {
"housing": {
"quote": "Human Body Model (HBM)(Note 1) VESD_HBM ±2 kV Caution 1: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit",
"page": 9,
"doc": "ds.pdf",
"material": "abs"
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"contacts": {
"quote": "7. To minimize the emission noise from switching node, the distance between the SW pins to inductor should be as short as possible and not to expand the copper area more than necessary.",
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"material": "copper"
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"name": "Input Voltage",
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{
"name": "Input Capacitor (VIN Continuous Condition)",
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"unit": "µF",
"min": 2.3,
"typ": null,
"max": null,
"conditions": "VIN Continuous Condition",
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{
"name": "VREG Capacitor",
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{
"name": "BST Capacitor",
"symbol": "CBST",
"kind": "recommended_operating",
"unit": "µF",
"min": 0.05,
"typ": 0.1,
"max": 0.2,
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{
"name": "Output Voltage Accuracy",
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"kind": "tolerance",
"unit": "%",
"min": -1.75,
"typ": null,
"max": 1.75,
"conditions": "-40 °C to +125 °C",
"source_page": 1,
"source": "datasheet"
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{
"name": "Input Voltage (absolute maximum)",
"symbol": "VVIN, VPVIN",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 42,
"conditions": "",
"source_page": 9,
"source": "datasheet"
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{
"name": "EN Voltage (absolute maximum)",
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"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 42,
"conditions": "",
"source_page": 9,
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{
"name": "BST Voltage (absolute maximum)",
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"typ": null,
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{
"name": "FB, RESET, MODE, SSCG, OCP_SEL Voltage (absolute maximum)",
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{
"name": "VOUT_DIS Voltage (absolute maximum)",
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{
"name": "VOUT_SNS Voltage (absolute maximum)",
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"kind": "absolute_maximum",
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{
"name": "VREG Voltage (absolute maximum)",
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{
"name": "Maximum Junction Temperature",
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{
"name": "Shutdown Current",
"symbol": "ISDWN",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 2.1,
"max": 10,
"conditions": "VEN = 0 V, Ta = -40 ˚C to +105 ˚C",
"source_page": 10,
"source": "datasheet"
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{
"name": "Quiescent Current from VIN",
"symbol": "IQ_VIN1",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 2.1,
"max": 6,
"conditions": "VMODE = 0 V, VVCC_EX = 5 V, VFB = VFB1 x 1.04 (SLEEP)",
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{
"name": "Quiescent Current from VIN",
"symbol": "IQ_VIN3",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 33,
"max": 66,
"conditions": "VMODE = 5 V, VVCC_EX = 5 V, VFB =VFB1 x 1.04 (No SLEEP)",
"source_page": 10,
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{
"name": "Quiescent Current from VCC_EX",
"symbol": "IQ_VCC_EX1",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 16,
"max": 60,
"conditions": "VMODE = 0 V, VFB = VFB1 x 1.04 (SLEEP)",
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{
"name": "VIN Power On Reset Rising",
"symbol": "VPOR_R",
"kind": "electrical",
"unit": "V",
"min": 3.6,
"typ": 3.8,
"max": 4,
"conditions": "VIN Sweep Up",
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},
{
"name": "VREG Under Voltage Lockout Falling",
"symbol": "VUVLO_F",
"kind": "electrical",
"unit": "V",
"min": 2.7,
"typ": 2.85,
"max": 3,
"conditions": "VREG Sweep Down",
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{
"name": "VREG Under Voltage Lockout Rising",
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"min": 2.75,
"typ": 2.95,
"max": 3.15,
"conditions": "VREG Sweep Up",
"source_page": 10,
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{
"name": "EN Input Voltage High",
"symbol": "VENH",
"kind": "electrical",
"unit": "V",
"min": 2,
"typ": null,
"max": 40,
"conditions": "",
"source_page": 10,
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{
"name": "EN Input Voltage Low",
"symbol": "VENL",
"kind": "electrical",
"unit": "V",
"min": 0,
"typ": null,
"max": 0.8,
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{
"name": "MODE Input Voltage High",
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"kind": "electrical",
"unit": "V",
"min": 2,
"typ": null,
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"conditions": "",
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{
"name": "OCP_SEL Input Voltage High",
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"unit": "V",
"min": 2,
"typ": null,
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{
"name": "OCP_SEL Input Voltage Low",
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{
"name": "SSCG Input Voltage High",
"symbol": "VSSCGH",
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"min": 2,
"typ": null,
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{
"name": "VREG Voltage",
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"min": 3,
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},
{
"name": "VCC_EX OVP Threshold Voltage High",
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"min": 5.85,
"typ": 6.2,
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{
"name": "VCC_EX OVP Threshold Voltage Low",
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"typ": 6,
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{
"name": "VOUT_DIS Discharge ON Resistance",
"symbol": "RDIS",
"kind": "electrical",
"unit": "Ω",
"min": null,
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