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UC2842BNG-TUDI
Public Made by Adomby adom
Tudi AC-DC Controllers And Regulators, DIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownUC2842BNG-TUDI
Tudi · AC-DC Controllers And Regulators · DIP-8
UC2842BNG-TUDI from Tudi, in a DIP-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 | COMP | output | Error amplifier output for loop compensation; error amp output sink current is 2 mA min (7 mA typ) and source current is -0.5 mA min. |
| 2 | VFB | input | Error amplifier inverting input (feedback voltage), with an analog input voltage range of -0.3 to 5.5 V and a 2.5 V typical input reference. |
| 3 | ISENSE | input | Current sense comparator input, with an analog input range of -0.3 to 5.5 V and a maximum input signal of 1.0 V typical. |
| 4 | RT/CT | passive | Oscillator timing pin for the external RT and CT, which set the oscillation frequency (52 kHz typical with RT=10 kΩ, CT=3.3 nF). |
| 5 | GND | power_in | Ground, the common return for the control circuitry and the power output stage. |
| 6 | OUT | output | High-current totem-pole output that drives a power MOSFET, with an absolute maximum output current of ±1 A. |
| 7 | VCC | power_in | Supply voltage input, with a 30 V absolute maximum and an internal Zener of 30 V min to 38 V max at 25 mA. |
| 8 | VREF | power_out | 5.0 V reference output (4.9 to 5.1 V at 1 mA, TJ=25°C), with a short-circuit current of -100 to -180 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Tudi |
| Package | DIP-8 |
| Category | Power Management (PMIC) |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply Voltage (low impedance source) | VCC | 30 | V | 3 | |||
| Output Current | -1 | 1 | A | 3 | |||
| Input Voltage (Analog Inputs pins 2,3) | VI | -0.3 | 5.5 | V | 3 | ||
| Error Amp Output Sink Current | ISINK(E.A) | 10 | mA | 3 | |||
| Power Dissipation | PO | 1 | W | TA=25°C | 3 | ||
| Storage Temperature Range | Tstg | -65 | 150 | °C | 3 | ||
| Lead Temperature | TL | 260 | °C | soldering 5 sec. | 3 | ||
| Ambient operating temperature | TA | -40 | 85 | °C | UC2842 characterized operating range (description) | 1 | |
| Reference Output Voltage | VREF | 4.9 | 5 | 5.1 | V | TJ = 25°C, IREF = 1 mA | 3 |
| Line Regulation | ΔVREF | 6 | 20 | mV | 12V ≤ VCC ≤ 25 V | 3 | |
| Load Regulation | ΔVREF | 6 | 25 | 1 mA ≤ IREF ≤ 20mA | 3 | ||
| Short Circuit Output Current | ISC | -100 | -180 | mA | TA = 25°C | 3 | |
| Oscillation Frequency | f | 47 | 52 | 57 | KHz | TJ = 25°C | 3 |
| Frequency Change with Voltage | Δf/ΔVCC | 0.05 | 1 | % | 12V ≤ VCC ≤ 25 V | 3 | |
| Input Voltage | VI(E.A) | 2.42 | 2.5 | 2.58 | V | Vpin1 = 2.5V | 3 |
| Open Loop Voltage Gain | AVOL | 65 | 90 | dB | 2V ≤ V0 ≤ 4V | 3 | |
| Unity Gain Bandwidth | UGBW | 0.5 | 0.6 | MHz | Tj=25°C, Note 3 | 3 | |
| Power Supply Rejection Ratio | PSRR | 60 | 70 | dB | 12V ≤ VCC ≤ 25 V | 3 | |
| Output Sink Current | ISINK | 2 | 7 | mA | Vpin2 = 2.7V, Vpin1 = 1.1V | 3 | |
| Output Source Current | ISOURCE | -0.5 | -1 | mA | Vpin2 = 2.3V, Vpin1 = 5V | 3 | |
| High Output Voltage (error amp) | VOH | 5 | 6 | V | Vpin2 = 2.3V, RL = 15KΩ to GND | 3 | |
| Low Output Voltage (error amp) | VOL | 0.8 | 1.1 | V | Vpin2 = 2.7V, RL = 15KΩ to PIN 8 | 3 | |
| Gain | GV | 2.85 | 3 | 3.15 | V/V | Note 1 & 2 | 3 |
| Maximum Input Signal | VI(MAX) | 0.9 | 1 | 1.1 | V | Vpin1 = 5V (Note 1) | 3 |
| Supply Voltage Rejection | SVR | 70 | dB | 12V ≤ VCC ≤ 25 V (Note 1) | 3 | ||
| Input Bias Current (current sense) | IBIAS | -3 | -10 | µA | Vpin3 = 3V | 3 | |
| Input Bias Current (error amp) | IBIAS | -0.1 | -2 | µA | VFB=3V | 3 | |
| Low Output Voltage (output) | VOL | 0.08 | 0.4 | V | ISINK = 20 mA | 3 | |
| Low Output Voltage (output) | VOL | 1.4 | 2.2 | V | ISINK = 200 mA | 3 | |
| High Output Voltage (output) | VOH | 13 | 13.5 | V | ISINK = 20 mA | 3 | |
| High Output Voltage (output) | VOH | 12 | 13 | V | ISINK = 200 mA | 3 | |
| Rise Time | tR | 45 | 150 | nS | TJ = 25°C, CL = 1nF (Note 3) | 3 | |
| Fall Time | tF | 35 | 150 | nS | TJ = 25°C, CL = 1nF (Note 3) | 3 | |
| Start Threshold | VTH(ST) | 14.5 | 16 | 17.5 | V | UC2842/44,UC3842/44 | 3 |
| Min. Operating Voltage (After Turn On) | VOPR(min) | 8.5 | 10 | 11.5 | V | UC2842/44,UC3842/44 | 3 |
| Max. Duty Cycle | D(MAX) | 95 | 97 | 100 | % | UC2842/43,UC3842/43 | 3 |
| Min. Duty Cycle | D(MIN) | 0 | 3 | ||||
| Operating Supply Current | ICC (OPR) | 13 | 17 | mA | Vpin3 = Vpin2 = 0V | 3 | |
| Zener Voltage | VZ | 30 | 38 | V | ICC=25 mA | 3 |
CAD (KiCad official)
- Symbol:
UC2842BNG-TUDI - Footprint:
Package_DIP:DIP-8_W7.62mm - 3D model: DIP-8 (KiCad packages3D, STEP)
- 3D model files:
uc2842bng-tudi-etched.step/uc2842bng-tudi-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);uc2842bng-tudi.step/uc2842bng-tudi.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Tudi datasheet (11 pp, sha256
fa001136cdaccd5a, retrieved 2026-10-15, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).