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TL594IPWR

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Texas Instruments DC-DC Controllers, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TL594IPWR

Texas Instruments · DC-DC Controllers · TSSOP-16

TL594IPWR from Texas Instruments, in a TSSOP-16. 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 1IN+ input Noninverting input to error amplifier 1; amplifier input voltage range is -0.3 V to VCC - 2 V.
2 1IN- input Inverting input to error amplifier 1; amplifier input voltage range is -0.3 V to VCC - 2 V.
3 FEEDBACK input Input pin for feedback; current into the FEEDBACK terminal is limited to 0.3 mA maximum.
4 DTC input Dead-time control comparator input.
5 CT passive Capacitor terminal used to set oscillator frequency; recommended timing capacitor is 0.47 nF to 10000 nF.
6 RT passive Resistor terminal used to set oscillator frequency; recommended timing resistor is 1.8 kΩ to 500 kΩ.
7 GND power_in Ground.
8 C1 output Collector terminal of BJT output 1; up to 200 mA per transistor recommended and 41 V absolute maximum collector voltage.
9 E1 output Emitter terminal of BJT output 1; uncommitted output transistor sinks or sources up to 200 mA.
10 E2 output Emitter terminal of BJT output 2; uncommitted output transistor sinks or sources up to 200 mA.
11 C2 output Collector terminal of BJT output 2; up to 200 mA per transistor recommended and 41 V absolute maximum collector voltage.
12 VCC power_in Positive supply; recommended operating range is 7 V to 40 V (41 V absolute maximum).
13 OUTPUT CTRL input Selects single-ended, parallel output, or push-pull operation.
14 REF power_out 5-V reference regulator output, trimmed to 1%.
15 2IN- input Inverting input to error amplifier 2; amplifier input voltage range is -0.3 V to VCC - 2 V.
16 2IN+ input Noninverting input to error amplifier 2; amplifier input voltage range is -0.3 V to VCC - 2 V.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TSSOP-16
Category Power Management ICs
Pins 16

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 VCC 41 V 4
Collector output voltage 41 V 4
Collector output current 250 mA 4
Operating junction temperature TJ 150 °C 4
Storage temperature Tstg -65 150 °C 4
Supply voltage VCC 7 40 V 4
Amplifier input voltage VI -0.3 V upper limit printed as VCC, 2 4
Collector output voltage VO 40 V 4
Collector output current (each transistor) 200 mA 4
Current into FEEDBACK terminal 0.3 mA 4
Timing capacitor CT 0.47 10000 nF 4
Timing resistor RT 1.8 500 kΩ 4
Oscillator frequency fosc 1 300 kHz 4
Operating free-air temperature TA -40 85 °C TL594I 4
Output voltage (REF) 4.95 5 5.05 V IO = 1 mA, TA = 25°C 5
Reference input regulation 2 25 mV VCC = 7 V to 40 V, TA = 25°C 5
Reference output regulation 14 35 mV IO = 1 mA to 10 mA, TA = 25°C 5
Output-voltage change with temperature 2 10 mV/V ΔTA = MIN to MAX 5
Short-circuit output current 10 35 50 mA Vref = 0 5
Input offset voltage, error amplifier 2 10 mV FEEDBACK = 2.5 V 5
Input offset current 25 250 nA FEEDBACK = 2.5 V 5
Input bias current 0.2 1 µA FEEDBACK = 2.5 V 5
Open-loop voltage amplification, error amplifier 70 95 dB ΔVO = 3 V, RL = 2 kΩ, VO = 0.5 V to 3.5 V 5
Common mode rejection ratio, error amplifier 65 80 dB VCC = 40 V, TA = 25°C 5
Output sink current, FEEDBACK 0.3 0.7 mA VID = -15 mV to -5 V, FEEDBACK = 0.5 V 5
Dead-time input bias current -2 -10 µA VI = 0 to 5.25 V 5
Maximum duty cycle, each output 0.45 DTC = 0 V 5
Collector off-state current 2 100 µA VC = 40 V, VE = 0 V, VCC = 40 V 5
Collector off-state current 4 200 µA DTC and OUTPUT CTRL = 0 V, VC = 15 V, VE = 0 V, VCC = 1 V to 3 V 5
Emitter off-state current -100 µA VCC = VC = 40 V, VE = 0 5
Collector-emitter saturation voltage, common emitter 1.1 1.3 V VE = 0, IC = 200 mA 5
Collector-emitter saturation voltage, emitter follower 1.5 2.5 V VC = 15 V, IE = -200 mA 5
PWM input threshold voltage, FEEDBACK 4 4.5 V Zero duty cycle 6
PWM input sink current, FEEDBACK 0.3 0.7 mA FEEDBACK = 0.5 V 6
UVLO threshold voltage 3.5 6.9 V ΔTA = MIN to MAX 6
Standby supply current 9 15 mA RT at Vref, all other inputs and outputs open, VCC = 15 V 6
Standby supply current 11 18 mA RT at Vref, all other inputs and outputs open, VCC = 40 V 6
Output-voltage rise time, common-emitter 100 200 ns Common-emitter configuration (see Figure 5) 6
Output-voltage fall time, common-emitter 30 100 ns Common-emitter configuration (see Figure 5) 6
Output-voltage rise time, emitter-follower 200 400 ns Emitter-follower configuration (see Figure 6) 6
Output-voltage fall time, emitter-follower 45 100 ns Emitter-follower configuration (see Figure 6) 6
Junction-to-ambient thermal resistance RθJA 101.5 °C/W PW (TSSOP) 16 pins 4
Junction-to-case (top) thermal resistance RθJC(top) 29.4 °C/W PW (TSSOP) 16 pins 4
Junction-to-board thermal resistance RθJB 47.3 °C/W PW (TSSOP) 16 pins 4
Junction-to-top characterization parameter ψJT 1.4 °C/W PW (TSSOP) 16 pins 4
Junction-to-board characterization parameter ψJB 46.6 °C/W PW (TSSOP) 16 pins 4
Unity-gain bandwidth 800 kHz VO = 0.5 V to 3.5 V, RL = 2 kΩ 5
Oscillator frequency 10 kHz CT = 0.01 µF, RT = 12 kΩ 5
Standard deviation of frequency 100 Hz/kHz All values of VCC, CT, RT, and TA constant 5
Frequency change with voltage 1 Hz/kHz VCC = 7 V to 40 V, TA = 25°C 5
Frequency change with temperature 50 Hz/kHz ΔTA = MIN to MAX 5
Output control input current 3.5 mA VI = Vref 5
UVLO threshold voltage 6 V TA = 25°C 6
UVLO hysteresis 100 mV 6
Average supply current 12.4 mA DTC = 2 V, see Figure 4 6

CAD (KiCad official)

  • Symbol: TL594IPWR
  • Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
  • 3D model: TSSOP-16 (KiCad packages3D, STEP)
  • 3D model files: tl594ipwr-etched.step / tl594ipwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tl594ipwr.step / tl594ipwr.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (37 pp, sha256 7200510bf66de9b5, 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