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NCP3064BMNTXG

onsemi · DC-DC Converters · DFN-8-EP(4x4)

NCP3064BMNTXG from onsemi, in a DFN-8-EP(4x4). 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 Switch Collector output Internal Darlington switch collector, rated −0.3 V to 42 V and switching a peak current of up to 1.5 A.
2 Switch Emitter output Internal Darlington switch emitter, rated −0.6 V to VCC when the transistor is off, measured versus pin 4.
3 Timing Capacitor passive Timing capacitor node for the oscillator, with pin voltage limited to −0.2 V to +1.4 V and CT charged and discharged in a 6:1 current ratio.
4 GND power_in Ground pin for all internal circuits, to which all maximum ratings are referenced; the EP flag must be tied to this pin on the PCB.
5 Comparator Inverting Input input Inverting input of the internal comparator, rated −0.3 V to VCC.
6 VCC power_in Voltage supply pin, rated −0.3 V to 42 V, with a specified input voltage range of 3.0 V to 40 V.
7 Ipk Sense input Peak current sense input that monitors the voltage drop across an external resistor to limit peak switch current, rated −0.3 V to (VCC + 0.3 V).
8 ON/OFF input Enable pin where a high level (above about 1.4 V, up to 25 V max) runs the device and a low or floating level puts it in low-power standby, rated −0.3 V to 25 V and below VCC.
9 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer onsemi
Package DFN-8-EP(4x4)
Category Power Management ICs
Pins 9

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
VCC supply voltage (Pin 6) VCC -0.3 42 V measured vs. Pin 4 3
Comparator inverting input (Pin 5) VCII -0.3 V measured vs. Pin 4; max printed as VCC 3
Darlington switch emitter (Pin 2), transistor OFF VSWE -0.6 V measured vs. Pin 4; max printed as VCC 3
Darlington switch collector (Pin 1) VSWC -0.3 42 V measured vs. Pin 4 3
Darlington switch collector to emitter (Pins 1 and 2) VSWCE -0.3 42 V 3
Darlington switch peak current ISW 1.5 A 3
Ipk sense voltage (Pin 7) VIPK -0.3 V max printed as VCC + 0.3 V 3
Timing capacitor pin voltage (Pin 3) VTC -0.2 1.4 V 3
ON/OFF pin voltage VON/OFF -0.3 25 V printed as (-0.3 to 25) < VCC 3
Lead temperature soldering reflow (SMD, Pb-Free) TSLD 260 C Reflow (SMD styles only), Pb-Free versions 3
Storage temperature range TSTG -65 150 C 3
Maximum junction temperature TJ MAX 150 C 3
Operation junction temperature range, NCP3064B / NCV3064 TJ -40 125 C 3
Oscillator frequency fOSC 110 150 190 kHz VPin 5 = 0 V, CT = 2.2 nF, TJ = 25C 4
Discharge to charge current ratio IDISCHG / ICHG 5.5 6 6.5 - Pin 7 to VCC, TJ = 25C 4
Current limit sense voltage VIPK 165 200 235 mV TJ = 25C 4
Darlington switch collector to emitter voltage drop VSWCE 1 1.3 V ISW = 1.0 A, TJ = 25C (Note 6) 4
Collector off-state current IC(OFF) 1 10 uA VCE = 40 V 4
Threshold voltage accuracy, NCP3064B / NCV3064 VTH -1.5 1.5 % 4
Threshold voltage line regulation REGLINE -6 2 6 mV VCC = 3.0 V to 40 V 4
Comparator input bias current ICII -1000 -100 1000 nA Vin = Vth 4
ON/OFF pin logic input level high VIH 2.2 V VOUT = Nominal Output Voltage, TJ = 25C 4
ON/OFF pin logic input level high VIH 2.4 V VOUT = Nominal Output Voltage, TJ = -40C to +125C 4
ON/OFF pin logic input level low VIL 1 V VOUT = 0 V, TJ = 25C 4
ON/OFF pin logic input level low VIL 0.8 V VOUT = 0 V, TJ = -40C to +125C 4
Supply current ICC 7 mA VCC = 5.0 V to 40 V, CT = 2.2 nF, Pin 7 = VCC, VPin 5 > Vth, Pin 2 = GND, remaining pins open 4
Standby quiescent current ISTBY 100 uA ON/OFF Pin = 0 V (OFF), TJ = -40C to +125C 4
Thermal resistance junction-to-air, DFN-8 RJA 78 C/W DFN-8, 1 oz copper, 1 in2 copper area (Note 5) 3
Thermal resistance junction-to-case, DFN-8 RJC 14 C/W DFN-8, 1 oz copper, 1 in2 copper area (Note 5) 3

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts copper 4. The pins which are not defined may not be loaded by external signals. 5. 1 oz copper, 1 in2 copper area. 3

CAD (KiCad official)

  • Symbol: NCP3064BMNTXG
  • Footprint: Package_DFN_QFN:DFN-8-1EP_4x4mm_P0.8mm_EP2.5x3.6mm
  • 3D model: DFN-8-EP(4x4) (KiCad packages3D, STEP)
  • 3D model files: ncp3064bmntxg-etched.step / ncp3064bmntxg-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ncp3064bmntxg.step / ncp3064bmntxg.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: onsemi datasheet (21 pp, sha256 751343e3af3486ff, 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