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LTC2954ITS8-2#TRPBF

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Analog Devices Supervisor And Reset ICs, TSOT-23-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LTC2954ITS8-2#TRPBF

Analog Devices · Supervisor And Reset ICs · TSOT-23-8

LTC2954ITS8-2#TRPBF from Analog Devices, in a TSOT-23-8. 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 VIN power_in Power supply input, specified for 2.7V to 26.4V operation.
2 PB input Pushbutton input with an internal 100k pull-up to a 1.9V bias; it withstands ±10kV HBM ESD, can be pulled up to 26.4V externally, and can operate down to -6V without latch-up.
3 ONT input Turn-on time input where a capacitor to ground adds 6.4 seconds/µF to the PB hold time before enable is asserted, and floating it gives a default 32ms turn-on debounce.
4 GND power_in Device ground.
5 INT output Open-drain interrupt output that is pulled low for a minimum of 32ms after a pushbutton turn-off event (tDB,OFF) and stays low while PB is asserted.
6 EN/EN output Open-drain enable bar output on the LTC2954-2 that is asserted low after a valid PB turn-on event, released high if KILL is not driven high within 512ms or KILL is driven low or PB is held for tPD,MIN + tPDT, and rated for 0V to 26.4V.
7 PDT input Power-down time input where a capacitor to ground adds 6.4 seconds/µF to the PB hold time before EN/EN and INT are released, and floating it gives a 64ms power-down time.
8 KILL input Kill input where forcing it low releases the enable output, with an accurate 0.6V threshold and a 512ms blanking timer at turn-on.

Key specifications

Parameter Value
Manufacturer Analog Devices
Package TSOT-23-8
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 Range VIN 2.7 26.4 V Steady State Operation 3
VIN Supply Current IIN 6 12 μA System Power-On, VIN = 2.7V to 24V 3
VIN Undervoltage Lockout VUVL 2.2 2.3 2.5 V VIN Falling 3
VIN Undervoltage Lockout Hysteresis VUVL(HYST) 50 400 700 mV 3
PB Voltage Range Single-Ended VPB(MIN, MAX) -1 26.4 V Single-Ended 3
PB Input Current IPB -1 1 μA 2.5V < VPB < 26.4V 3
PB Input Threshold VPB(VTH) 0.6 0.8 1 V PB Falling 3
PB Open Circuit Voltage VPB(VOC) 1 1.6 2 V IPB = -1μA 3
EN/EN Lockout Time tEN,LOCKOUT 200 256 325 ms Enable Released → Enable Asserted 3
EN/EN Leakage Current IEN(LKG) -0.1 0.1 μA VEN/EN = 1V, Sink Current Off 3
EN/EN Leakage Current IEN(LKG) -1 1 μA VEN/EN = 26.4V, Sink Current Off 3
EN/EN Voltage Output Low VEN(VOL) 0.11 0.4 V IEN/EN = 500μA 3
ONT Pull-Up Current IONT(PU) -2.4 -3 -3.6 μA VONT = 0V 3
ONT Pull-Down Current IONT(PD) 2.4 3 3.6 μA VONT = 1.3V 3
Internal Turn-On Debounce Time tDB, ON 26 32 41 ms ONT Pin Float, PB Falling → Enable Asserted 3
Additional Adjustable Turn-On Time tONT 9 11.5 13.5 ms CONT = 1500pF 3
PDT Pull-Up Current IPDT(PU) -2.4 -3 -3.6 μA VPDT = 0V 3
PDT Pull-Down Current IPDT(PD) 2.4 3 3.6 μA VPDT = 1.3V 3
Turn-Off Interrupt Debounce Time tDB,OFF 26 32 41 ms PB Falling → INT Falling 3
Internal PB Power-Down Debounce Time tPD,MIN 52 64 82 ms PDT Pin Float, PB Falling → Enable Released 3
Additional Adjustable PB Power-Down Debounce Time tPDT 9 11.5 13.5 ms CPDT = 1500pF 3
Minimum INT Pulse Width tINT,MIN 26 32 41 ms INT Asserted → INT Released 3
Maximum INT Pulse Width tINT,MAX 35 43.5 54.5 ms CPDT = 1500pF, INT Asserted → INT Released 3
INT Leakage Current IINT(LKG) -1 1 μA VINT = 3V 3
INT Output Voltage Low VINT(VOL) 0.11 0.4 V IINT = 3mA 3
KILL Input Threshold Voltage VKILL(TH) 0.57 0.6 0.63 V KILL Falling 3
KILL Input Threshold Hysteresis VKILL(HYST) 10 30 50 mV 3
KILL Leakage Current IKILL(LKG) -0.1 0.1 μA V KILL = 0.6V 3
KILL Minimum Pulse Width tKILL(PW) 30 μs 3
KILL Propagation Delay tKILL(PD) 30 μs KILL Falling → Enable Released 3
KILL Turn-On Blanking tKILL,ON BLANK 400 512 650 ms KILL = Low, Enable Asserted → Enable Released 3
VIN Supply Voltage (absolute maximum) VIN -0.3 33 V 2
PB Input Voltage (absolute maximum) PB -6 33 V 2
ONT Input Voltage (absolute maximum) ONT -0.3 2.7 V 2
PDT Input Voltage (absolute maximum) PDT -0.3 2.7 V 2
KILL Input Voltage (absolute maximum) KILL -0.3 7 V 2
INT Output Voltage (absolute maximum) INT -0.3 10 V 2
EN/EN Output Voltage (absolute maximum) EN/EN -0.3 33 V 2
Operating Temperature Range (LTC2954I-2) TA -40 85 °C 2
Storage Temperature Range (TSOT-23) TSTG -65 150 °C TSOT-23 package 2
Maximum Junction Temperature TJMAX 125 °C TS8 package 2
Thermal Resistance, Junction to Ambient θJA 140 °C/W TS8 package 2

CAD (KiCad official)

  • Symbol: LTC2954ITS8-2#TRPBF
  • Footprint: Package_TO_SOT_SMD:TSOT-23-8
  • 3D model: TSOT-23-8 (KiCad packages3D, STEP)
  • 3D model files: ltc2954its8-2-trpbf-etched.step / ltc2954its8-2-trpbf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ltc2954its8-2-trpbf.step / ltc2954its8-2-trpbf.glb are the bare package body.

Provenance

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

  • Datasheet: Analog Devices datasheet (18 pp, sha256 1e9e2567d15e569e, retrieved 2026-10-18, 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