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GR8875NRKAG

Public Made by Adom

by adom

Grenergy DC-DC Converters, SOP-7. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Symbol & Footprint

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Contents

README

markdown

GR8875NRKAG

Grenergy · DC-DC Converters · SOP-7

GR8875NRKAG from Grenergy, in a SOP-7. 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 RTL input Latch trigger pin: a voltage above 3.5V latches off for OVP and below 1.05V latches off for OTP, after a 100 uS debounce, with an output current of 92-108 uA and a clamped voltage of 2.2V.
2 COMP input Voltage feedback pin, connected to a photo-coupler to control the duty cycle; open-loop voltage is 4.5V typical and open-loop protection is delayed by 50 mS.
3 CS input Current sense pin that senses MOSFET current, with current limit of 0.80-0.90V at low line and 0.7V at high line and 250 nS leading-edge blanking.
4 GND power_in Ground reference pin.
5 OUT output Gate driver output for driving the external MOSFET, with output high of 8V typical, output low of 1V typical at 20 mA, and gate clamp of 11-15V at VCC = 25V.
6 VCC power_in Power supply pin with UVLO on at 16-18V and off at 8-10V, OVP threshold of 27-29V, and an absolute maximum rating of 30V.
8 HV power_in High-voltage pin that provides the startup current (absolute maximum 500V) and turns off its startup loop once UVLO (on) is tripped to limit startup power loss.

Key specifications

Parameter Value
Manufacturer Grenergy
Package SOP-7
Category Power Supply Chip
Pins 7

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Brownout Threshold (see below equation 1) 92 102 112 V DC source R=125KΩ 5
Brownin Threshold (see below equation 2) 104 114 124 V DC source R=125KΩ 5
Startup Current 30 uA 5
UVLO (off) 8 9 10 V 5
UVLO (on) 16 17 18 V 5
OVP on VCC Pin 27 28 29 V 5
Current Limit @ Low Line (Vac=86V) VDC=122 Series RHV=125k to HV Vcs-H 0.8 0.85 0.9 V 5
Normal PWM Frequency 60 65 70 KHz 5
Jitter Range -6 6 % 5
Output High Level 8 V VCC = 15V, IO = 20mA 6
Output Low Level 1 V VCC = 15V, IO = 20mA 6
VGATE-Clamp 11 13 15 V VCC = 25V 6
Maximum Duty Cycle 70 75 80 % 6
Over Voltage Protection Threshold Voltage 3.2 3.5 3.8 V 6
Over Temperature Protection Threshold Voltage 0.95 1.05 1.15 V 6
Output Current from RTL Pin 92 100 108 uA 6
Absolute maximum Supply Voltage VCC VCC 30 V 3
High-Voltage Pin, HV HV -0.3 500 V 3
COMP, RTL, CS -0.3 7 V 3
Junction Temperature TJ 150 ℃ 3
Operating Ambient Temperature TA -40 85 ℃ 3
Storage Temperature Range TSTG -65 150 ℃ 3
Power Dissipation (SOP-7/SOP-8) PD 400 mW Ambient Temperature = 85℃ 3
Lead Temperature (SOP-7/SOP-8, soldering, 10sec) 230 ℃ 10 sec soldering 3
Lead Temperature (All Pb free packages, soldering, 10sec) 260 ℃ 10 sec soldering 3
ESD Voltage Protection, Human Body Model (except HV pin) 3 KV 3
ESD Voltage Protection, Machine Model 300 V 3
Package Thermal Resistance (SOP-7/SOP-8) 160 ℃/W 3
Off-State Leakage Current 36 uA 5
High-Voltage Current Source (VDC=370, R=125k, Vcc=0V) 2.96 4 mA VDC=370, R=125k, Vcc=0V 5
PWM Turn-Off Debounce Time - Normal Operation 75 mS 5
Operating Current (with 1nF load on OUT pin), Vcomp = 0V 0.8 mA 1nF load on OUT pin, Vcomp = 0V 5
Operating Current (with 1nF load on OUT pin), Vcomp = 2.5V 2.2 mA 1nF load on OUT pin, Vcomp = 2.5V 5
Operating Current (with 1nF load on OUT pin), Protection Tripped (OLP, OVP) 0.5 mA 1nF load on OUT pin, protection tripped (OLP, OVP) 5
Open Loop Voltage, Comp Pin Open 4.5 V Comp pin open 5
Delay Time of Comp Pin Open Loop Protection 50 mS 5
Current limit @ High Line (Vac=259V) VDC=366 Series RHV=125k to HV Vcs-L 0.7 V Vac=259V, VDC=366, RHV=125k 5
Leading-Edge Blanking Time without Tpd 250 nS without Tpd 5
Input Impedance 1 MΩ 5
Delay to Output 100 nS 5
Green Mode Frequency 22 KHz 5
Temp. Stability 5 % -40°C ~ 105°C 5
Voltage Stability 2 % VCC = 11V ~ 25V 5
Rising Time 150 nS Load Capacitance = 1000pF 6
Falling Time 50 nS Load Capacitance = 1000pF 6
Soft Start Time (Freq=65kHz) 6 mS Freq=65kHz 6
OVP Debounce, Fs = 65kHz 100 uS Fs = 65kHz 6
OTP Debounce, Fs = 65kHz 100 uS Fs = 65kHz 6
Clamped Voltage (RTL pin) 2.2 V 6
VCC De-latch Voltage 3.4 V 6

CAD (KiCad official)

  • Symbol: GR8875NRKAG
  • Footprint: Package_SO:SOIC-8-N7_3.9x4.9mm_P1.27mm
  • 3D model: SOP-7 (KiCad packages3D, STEP)
  • 3D model files: gr8875nrkag-etched.step / gr8875nrkag-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); gr8875nrkag.step / gr8875nrkag.glb are the bare package body.

Provenance

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

  • Datasheet: Grenergy datasheet (13 pp, sha256 098d9713992dcd77, retrieved 2026-10-19, tier: lcsc)
  • 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