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NCP1340B10DR2G

Public Made by Adom

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onsemi AC-DC Controllers & Regulators, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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NCP1340B10DR2G

onsemi · AC-DC Controllers & Regulators · SOIC-8

NCP1340B10DR2G from onsemi, in a SOIC-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 Fault input Controller enters fault mode if the voltage on this pin is pulled above or below the fault thresholds, and a precise pull-up current source allows direct interface with an NTC thermistor.
2 FB input Feedback input for the QR flyback controller that allows direct connection to an optocoupler.
3 ZCD/OPP input A resistor divider from the auxiliary winding to this pin provides input to the demagnetization detection comparator and sets the OPP compensation level.
4 CS input Input to the cycle-by-cycle current limit comparator.
5 GND power_in Ground reference.
6 DRV output Drive pin of the circuit with -0.5/+0.8 A high-current capability, suitable for driving high gate charge power MOSFETs.
7 VCC power_in Positive supply of the IC that starts operating when VCC exceeds 17 V and turns off below 9 V (typical), with an operating range of 9 V to 28 V after start-up.
8 HV input Input for the high-voltage startup and brownout detection circuits, also containing line removal detection to safely discharge the X2 capacitors, rated -0.3 to 700 V.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOIC-8
Category Power Management ICs
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
High Voltage Startup Circuit Input Voltage VHV(MAX) -0.3 700 V 5
High Voltage Startup Circuit Input Current IHV(MAX) 20 mA 5
Supply Input Voltage VCC(MAX) -0.3 30 V 5
Supply Input Current ICC(MAX) 30 mA 5
Supply Input Voltage Slew Rate dVCC/dt 1 V/s 5
Maximum Junction Temperature TJ(MAX) 150 °C 5
Storage Temperature Range TSTG -60 150 °C 5
Operating Junction Temperature TJ -40 125 °C 5
Power Dissipation PD(MAX) 450 mW D Suffix, SOIC-8; TA = 25°C, 1 oz. Cu, 42 mm2 Copper Clad PCB 5
Thermal Resistance Junction-to-Ambient RθJA 225 °C/W D Suffix, SOIC-8; TA = 25°C, 1 oz. Cu, 42 mm2 Copper Clad PCB 5
Startup Threshold (Version B10) VCC(on) 14 15 16 V VCC increasing 6
Minimum Operating Voltage VCC(off) 8.5 9 9.5 V VCC decreasing 6
Operating Hysteresis (Version B10) VCC(HYS) 5.5 V VCC(on) − VCC(off) 6
Internal Latch / Logic Reset Level VCC(reset) 4.5 6.5 7.5 V VCC decreasing 6
Transition from Istart1 to Istart2 VCC(inhibit) 0.4 0.7 1.05 V VCC increasing, IHV = 650 µA 6
VCC(off) Delay tdelay(VCC_off) 25 32 40 µs VCC decreasing 6
Startup Delay tdelay(start) 500 µs Delay from VCC(on) to DRV Enable 6
Minimum Voltage for Start-Up Current Source VHV(MIN) 30 V 6
Inhibit Current Sourced from VCC Pin Istart1 0.2 0.5 0.65 mA Vcc = 0 V 6
Start-Up Current Sourced from VCC Pin Istart2 2.4 3.75 5 mA Vcc = Vcc(on), 0.5 V, -40°C to 105°C 6
Start-Up Current Sourced from VCC Pin Istart2 2 3.75 5 mA Vcc = Vcc(on), 0.5 V, -40°C to 125°C 6
Start-Up Circuit Off-State Leakage Current IHV(off1) 15 µA VHV = 162.5 V 6
Start-Up Circuit Off-State Leakage Current IHV(off2) 20 µA VHV = 325 V 6
Start-Up Circuit Off-State Leakage Current IHV(off3) 50 µA VHV = 700 V 6
Supply Current, Fault or Latch ICC1 0.115 0.15 mA VCC = VCC(on), 0.5 V 6
Supply Current, Skip Mode (excluding FB current) ICC2 0.23 0.315 mA VFB = 0 V 6
Supply Current, Operating ICC3 1 1.5 mA fsw = 50 kHz, CDRV = open 6
VCC Overvoltage Protection Threshold VCC(OVP) 27 28 29 V 6
VCC Overvoltage Protection Delay tdelay(VCC_OVP) 25 32 40 µs 6
Gate Drive Rise Time tDRV(rise) 20 40 ns VDRV from 10% to 90% 6
Gate Drive Fall Time tDRV(fall) 5 30 ns VDRV from 90% to 10% 6
Driver Source Current Capability IDRV(SRC) 500 mA 7
Driver Sink Current Capability IDRV(SNK) 800 mA 7
Driver High State Voltage VDRV(high1) 8 V VCC = VCC(off) + 0.2 V, RDRV = 10 kΩ 7
Driver High State Voltage VDRV(high2) 10 12 14 V VCC = 30 V, RDRV = 10 kΩ 7
Driver Low State Voltage VDRV(low) 0.25 V VFault = 0 V 7
FB Open Pin Voltage VFB(open) 4.8 5 5.1 V Versions B5/B6/A6 7
FB Internal Pull-Up Resistor RFB 17 20 23 kΩ VFB = 0.4 V, Versions A6, B4-B10 7
Valley Transition 1st to 2nd V1to2 1.316 1.4 1.484 V VFB decreasing 7
Valley Transition 2nd to 3rd V2to3 1.128 1.2 1.272 V VFB decreasing 7
Valley Transition 3rd to 4th V3to4 1.034 1.1 1.166 V VFB decreasing 7
Valley Transition 4th to 5th V4to5 0.94 1 1.06 V VFB decreasing 7
Valley Transition 5th to 6th V5to6 0.846 0.9 0.954 V VFB decreasing 7
Valley Transition 6th to 5th V6to5 1.41 1.5 1.59 V VFB increasing 7
Valley Transition 5th to 4th V5to4 1.504 1.6 1.696 V VFB increasing 7
Valley Transition 4th to 3rd V4to3 1.598 1.7 1.802 V VFB increasing 7
Valley Transition 3rd to 2nd V3to2 1.692 1.8 1.908 V VFB increasing 7
Valley Transition 2nd to 1st V2to1 1.88 2 2.12 V VFB increasing 7
Maximum On Time ton(MAX) 28 32 40 µs 7
ZCD threshold voltage VZCD(trig) 35 60 90 mV VZCD decreasing 7
ZCD hysteresis VZCD(HYS) 15 25 55 mV VZCD increasing 7
Demagnetization Propagation Delay tdemag 80 250 ns VZCD step from 4.0 V to −0.3 V 7
ZCD Positive Clamp Voltage VZCD(MAX) 12.4 12.7 13 V IQZCD = 5.0 mA 7
ZCD Negative Clamp Voltage VZCD(MIN) -0.9 -0.7 0 V IQZCD = −2.0 mA 7
ZCD Blanking Delay After Turn-Off tZCD(blank) 600 700 800 ns 7
Timeout After Last Demagnetization Detection t(tout1) 80 100 120 µs While in soft-start 7
Timeout After Last Demagnetization Detection t(tout2) 5.1 6 6.9 µs After soft-start complete 7
Current Limit Threshold Voltage VILIM1 0.76 0.8 0.84 V VCS increasing 7
Leading Edge Blanking Duration tLEB1 220 265 330 ns DRV minimum width minus tdelay(ILIM1) 7
Current Limit Threshold Propagation Delay tdelay(ILIM1) 95 175 ns Step VCS 0 V to VILIM1 + 0.5 V, VFB = 4 V 8
PWM Comparator Propagation Delay tdelay(PWM) 125 175 ns Step VCS 0 V to 0.7 V, VFB = 2.4 8
Minimum Peak Current Freeze Setpoint Vfreeze 170 200 230 mV 8
Abnormal Overcurrent Fault Threshold VILIM2 1.125 1.2 1.275 V VCS increasing, VFB = 4 V 8
Abnormal Overcurrent Fault Blanking Duration tLEB2 80 110 140 ns DRV minimum width minus tdelay(ILIM2) 8
Abnormal Overcurrent Fault Propagation Delay tdelay(ILIM2) 80 175 ns Step VCS 0 V to VILIM2 + 0.5 V, VFB = 4 V 8
Overpower Signal Blanking Delay tOPP(blank) 220 280 330 ns 8
Soft-Start Period tSSTART 2.8 4 5 ms Measured from 1st DRV pulse to VCS = VILIM1 8
Flyback Overload Fault Timer tOVLD 120 160 200 ms VCS = VILIM1, Other Versions 8

CAD (KiCad official)

  • Symbol: NCP1340B10DR2G
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: ncp1340b10dr2g-etched.step / ncp1340b10dr2g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ncp1340b10dr2g.step / ncp1340b10dr2g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (43 pp, sha256 ab80e1458de58ce2, retrieved 2026-10-27, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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