TL432 adjustable precision shunt regulator features l precise reference voltage to 1.240v l guaranteed 1% voltage tolerance ladjustable output voltage vo = vref to 18v lsink current capability , 80ua to 100ma l die size 0.85 x0.85mm2, thickness 270+/- 30um l to-92 packages suffix t & sot-23 suffix add lt1 to-92 pin: 1. reference 2. anode 3. cathode pin arrangement sot-23 pin: 1. reference 2. cathode 3. anode this device has a typical output impedance of 0. 2w. active output circuitry provides a very sharp turn-on characteristic, making the TL432 an excellent replacement for zener diodes in many applications, including on-board regulation and adjustable power supplies. parameter symbol rating unit maximum ratings cathode voltag ev ka cathode current range, continuous i k reference current range i ref 3.0 ma ambient temperature range t a 0 to +85 o c junction temperature range t j - 40 to +150 o c storage temperature range t stg -45 to +150 o c lead temperature for soldering (10 sec) t so 260 o c v 18 ma 100 tolerance 1% suffix add a, 0.5% suffix add b l
TL432 adjustable precision shunt regulator reference input voltage v ref v v ka = v ref , i k = 10ma 1.228 1.24 1.252 reference voltage deviation over d v ref /t---10.025 mv temperature range (fig. 1, note 2) i k = 10ma, t a = 0 to 85 o c voltage ratio (open loop gain) d v ref ---1.0 2.7mv/v i k = 10ma (fig. 2), d v ka v ka = v ref to 6v reference current (fig. 2) i ref ---0.250.5ma i k = 10ma, r1 = 10k, r2 = open reference current deviation (fig. 2) i ref(dev) ---0.05 0.3 ma i k = 10ma, r1 = 10k, r2 = open minimum cathode currenti k(min) ---60 80ma v ka = v ref (fig. 1) off - state cathode current (fig. 3) i k(off) ---0.04 0.5 ma v ka = 6v, v ref = 0v electrical characteristics (ambient temperature at 25 o c unless otherwise noted) characteristic symbol min typ max unit ka = v ref , v out = v ka = v ref fig. 2 test circuit for v ka > v ref , v out = v ka = v ref x (1+r 1 /r 2 ) + i ref x r 1 fig. 3 test circuit for i off dynamic impedance (fig. 1) izka --- 0.2 0.4 ohm vka = vref, ik = 0.1ma to 20ma, f< 1.0 khz note1: full temperature range is - 40 to +105c
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