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TL3845P
Public Made by Adomby adom
Texas Instruments 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
markdownTL3845P
Texas Instruments · AC-DC Controllers And Regulators · DIP-8
TL3845P from Texas Instruments, 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 | bidirectional | Error amplifier compensation pin, which acts as an input or output per the datasheet pin table (I/O). |
| 2 | VFB | input | Error amplifier input. |
| 3 | ISENSE | input | Current sense comparator input. |
| 4 | RT/CT | bidirectional | Oscillator RC input, which the datasheet lists as an input or output (I/O). |
| 5 | GND | power_in | Device power supply ground terminal. |
| 6 | OUTPUT | output | PWM output. |
| 7 | VCC | power_in | Device positive voltage supply. |
| 8 | REF | output | Oscillator voltage reference output. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| 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 |
|---|---|---|---|---|---|---|---|
| Analog input voltage range, VFB and ISENSE | VI | -0.3 | 6.3 | V | 4 | ||
| Output voltage | VO | 35 | V | 4 | |||
| Supply current | ICC | 30 | mA | 4 | |||
| Output current | IO | -1 | 1 | A | 4 | ||
| Error amplifier output sink current | 10 | mA | 4 | ||||
| Virtual junction temperature | TJ | 150 | °C | 4 | |||
| Output energy (capacitive load) | 5 | µJ | 4 | ||||
| Storage temperature | Tstg | -65 | 150 | °C | 4 | ||
| VCC and VC supply voltage | VCC | 30 | V | 4 | |||
| VI, RT/CT input voltage | VI | 0 | 5.5 | V | 4 | ||
| VI, VFB and ISENSE input voltage | VI | 0 | 5.5 | V | 4 | ||
| Output voltage, OUTPUT | VO | 0 | 30 | V | 4 | ||
| Supply current, externally limited | ICC | 25 | mA | 4 | |||
| Average output current | IO | 200 | mA | 4 | |||
| Reference output current | IO(ref) | -20 | mA | 4 | |||
| Oscillator frequency | fOSC | 100 | 500 | kHz | 4 | ||
| Operating free-air temperature, TL384x | TA | 0 | 70 | °C | 4 | ||
| Output voltage | 4.9 | 5 | 5.1 | V | IO = 1 mA, TA = 25°C | 5 | |
| Line regulation | 6 | 20 | mV | VCC = 12 V to 25 V | 5 | ||
| Load regulation | 6 | 25 | mV | IO = 1 mA to 20 mA | 5 | ||
| Temperature coefficient of output voltage | 0.2 | 0.4 | mV/°C | 5 | |||
| Output voltage with worst-case variation | 4.82 | 5.18 | V | VCC = 12 V to 25 V, IO = 1 mA to 20 mA | 5 | ||
| Output-voltage long-term drift | 5 | 25 | mV | After 1000 h at TA = 25°C | 5 | ||
| Short-circuit output current | -180 | -100 | -30 | mA | 5 | ||
| Oscillator frequency | 47 | 52 | 57 | kHz | TA = 25°C | 5 | |
| Frequency change with supply voltage | 2 | 10 | Hz/kHz | VCC = 12 V to 25 V | 5 | ||
| Feedback input voltage | 2.42 | 2.5 | 2.58 | V | COMP at 2.5 V | 5 | |
| Input bias current | -0.3 | -2 | µA | 5 | |||
| Open-loop voltage amplification | 65 | 90 | dB | VO = 2 V to 4 V | 5 | ||
| Gain-bandwidth product | 0.7 | 1 | MHz | 5 | |||
| Supply-voltage rejection ratio | 60 | 70 | dB | VCC = 12 V to 25 V | 5 | ||
| Output sink current | 2 | 6 | mA | VFB at 2.7 V, COMP at 1.1 V | 5 | ||
| Output source current | -0.5 | -0.8 | mA | VFB at 2.3 V, COMP at 5 V | 5 | ||
| High-level output voltage | 5 | 6 | V | VFB at 2.3 V, RL = 15 kΩ to GND | 5 | ||
| Low-level output voltage | 0.7 | 1.1 | V | VFB at 2.7 V, RL = 15 kΩ to GND | 5 | ||
| Voltage amplification | 2.85 | 3 | 3.15 | V/V | See notes 4, 5: ISENSE to COMP, input 0 V to 0.8 V | 5 | |
| Current-sense comparator threshold | 0.9 | 1 | 1.1 | V | COMP at 5 V | 5 | |
| Input bias current, current sense | -2 | -10 | µA | 5 | |||
| Delay time to output | 150 | 300 | ns | 5 | |||
| High-level output voltage | 13 | 13.5 | V | IOH = -20 mA | 5 | ||
| Low-level output voltage | 0.1 | 0.4 | V | IOH = 20 mA | 5 | ||
| Low-level output voltage | 1.5 | 2.2 | V | IOH = 200 mA | 5 | ||
| Rise time | 25 | 150 | ns | CL = 1 nF, TA = 25°C | 5 | ||
| Fall time | 25 | 150 | ns | CL = 1 nF, TA = 25°C | 5 | ||
| Start threshold voltage, TLx843 and TLx845 | 7.8 | 8.4 | 9 | V | 5 | ||
| Minimum operating voltage after startup, TLx843 and TLx845 | 7 | 7.6 | 8.02 | V | 5 | ||
| Maximum duty cycle, TLx844 and TLx845 | 46 | 48 | 50 | % | 6 | ||
| Start-up current | 0.5 | 1 | mA | 6 | |||
| Operating supply current | 11 | 17 | mA | VFB and ISENSE at 0 V | 6 | ||
| Junction-to-ambient thermal resistance, P (PDIP, 8) | RθJA | 74.1 | °C/W | P (PDIP, 8) package | 4 |
CAD (KiCad official)
- Symbol:
TL3845P - Footprint:
Package_DIP:DIP-8_W7.62mm - 3D model: DIP-8 (KiCad packages3D, STEP)
- 3D model files:
tl3845p-etched.step/tl3845p-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tl3845p.step/tl3845p.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (30 pp, sha256
a83316c6a1cb9720, retrieved 2026-11-05, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).