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TMI8037

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TMI Power Management - Specialized, ESOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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TMI8037

TMI · Power Management - Specialized · ESOP-8

TMI8037 from TMI, in a ESOP-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 VLNB power_out LNB output pin that delivers the 14V/19V supply to the LNB, with the 22kHz DiSEqC tone superimposed (±350mV) and output current limited to 500-750mA.
2 BOOST power_in BOOST converter output voltage sense and the input terminal of the internal LDO, which withstands a back voltage of 27V.
3 LX passive DC-DC converter switch node, connected to the boost inductor (LX voltage range -2 to 30V absolute maximum).
4 VIN power_in Power supply input, operating over 9V to 14V (12V typical) with an input UVLO threshold of 7.5V (rising).
5 EN input Enable input: a low level disables the output and a high level (1.5V minimum) enables it, with absolute maximum supply voltage range of -0.3 to 24V.
6 H_L input Output voltage select input: high selects 19V and low selects 14V, with logic high at 1.5V minimum and logic low at 0.55V maximum (absolute maximum -0.3 to 6V).
7 VCP passive Charge pump node for the LDO supply; a 10nF capacitor connects from VCP to GND or to BOOST, and if connected to GND its voltage rating should be 50V.
8 TONE input 22kHz TONE signal input (20-22kHz range) that must be held low when no tone is applied, with absolute maximum voltage range of -0.3 to 6V.
9 GND power_in Power ground, provided on the exposed pad at the bottom of the package.

Key specifications

Parameter Value
Manufacturer TMI
Package ESOP-8
Category Power Management (PMIC)
Pins 9

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
EN Supply Voltage Range -0.3 24 V 4
BOOST Voltage Range -0.3 30 V 4
VLNB Voltages Range -0.3 24 V 4
LX Voltage Range -2 30 V 4
VCP Voltage Range -0.3 30 V 4
H_L, TONE Voltage Range -0.3 6 V 4
Junction Temperature -40 150 °C Note 2 4
Storage Temperature -50 150 °C 4
Lead Temperature (Soldering) 260 °C Soldering, 10s 4
ESD Human Body Model, all pins VESD -2000 2000 V Human Body Model, JEDEC specification JS-001 5
Voltage Range IN 9 14 V 5
TJ Operating Junction Temperature Range TJ -40 125 °C 5
Operating supply voltage range VIN 9 12 14 V 6
Operating Supply Current IIN 10 mA EN="1", VOUT=19V, TONE_IN=0V 6
Operating Supply Current with 22kHz TONE input IIN 25 mA EN="1", VOUT=19V, 22kHz TONE Input 6
Disable Supply Current ISDN 0.2 mA EN="0" 6
Output Voltage (H_L=1) VOUT 18 19 V EN="1", H_L="1", ILOAD=200mA (Note 4) 6
Output Voltage (H_L=0) VOUT 13 14 V EN="1", H_L="0", ILOAD=200mA (Note 4) 6
Linear Regulator Drop Voltage VDROP 0.6 1.2 V EN="1", ILOAD=450mA 6
VIN Line Regulation RLINE 4 40 mV VIN=9~14V, VOUT=19V 6
DC Control Switching Transition 14V->19V TDCTRAN 0.4 1 1.4 ms 14V->19V, ILOAD=200mA 6
DC Control Switching Transition 19V->14V TDCTRAN 0.4 1 1.4 ms 19V->14V, ILOAD=200mA 6
VOUT output Load Regulation RLOAD 30 80 mV ILOAD=0~450mA, VOUT=19V, Slow Rate=255mA/us, CLOAD=0.2μF 6
Ripple and Noise on VOUT Output VNOISE 40 mV 20MHz BWL 6
Output Current Limit ILIMIT 500 600 750 mA VOUT=19V or OUT=14V 6
VOUT output short current limit ILIMIT 140 240 340 mA VOUT output short 6
Boost DC/DC Switching Frequency FBOOST 0.8 1 1.2 MHz EN="1" 6
BOOST Maximum Duty DBST_MAX 80 % 6
BOOST Minimum on Time DBST_MIN 0 % 6
Short and Overload: Dynamic Overload ON Time Ton 75 ms Output shorted to GND 7
Short and Overload: Dynamic Overload OFF Time Toff 1600 ms Output shorted to GND 7
Input TONE Frequency Range FTONE 20 22 kHz 7
VOUT output TONE Amplitude, peak to peak VPP_TONE 600 800 mV ILOAD=0~450mA, CLOAD=100nF 7
VOUT output TONE Rising Time TRISE_TON 6 8 10 μs ILOAD=0~450mA, CLOAD=570nF 7
VOUT output TONE Falling Time TFALL_TON 6 8 10 μs ILOAD=0~450mA, CLOAD=570nF 7
TONE Pin Input Leakage Current ITON_LEAK 5 μA 7
H_L High Logic Input VHL_INH 1.5 V 7
H_L Low Logic Input VHL_INL 0.55 V 7
H_L Pin Input Leakage IHL_LEAK 5 μA 7
EN High Logic Input VEN_INH 1.5 V 7
EN Low Logic Input VEN_INL 0.55 V 7
EN PIN Maximum Input Current IEN_MAX 15 μA 7
Input UVLO Threshold VUVLO 7.5 V VIN rising 6
Input UVLO Hysteresis VUVLO_HY 0.6 V 6
Power on VOUT Rise Time TRVOUT 1.5 ms ILOAD=200mA 6
Switch on Resistance Rdson 120 mΩ ILOAD=450mA 6
BOOST Current Limit IBST_LIM 1.5 A 6
Thermal Shutdown Threshold TSDN 150 °C 7
Thermal Shutdown Hysteresis TSDN_HY 25 °C 7
VOUT output TONE Duty DTONE 50 % ILOAD=0~450mA, CLOAD=570nF 7

CAD (KiCad official)

  • Symbol: TMI8037
  • Footprint: Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm
  • 3D model: ESOP-8 (KiCad packages3D, STEP)
  • 3D model files: tmi8037-etched.step / tmi8037-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tmi8037.step / tmi8037.glb are the bare package body.

Provenance

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

  • Datasheet: TMI datasheet (11 pp, sha256 0ac3e15ccc7759d9, 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