NXP Semiconductors TDA3674
The TDA3674 is a fixed 5 V voltage regulator with very low dropout voltage and quiescent current, which operates over a wide supply voltage range. The IC is available as: • TDA3674T: VP ≤ 33 V, −40 °C ≤ Tamb ≤ +85 °C and SO8 package (non-automotive) • TDA3674AT: VP ≤ 45 V, −40 °C ≤ Tamb ≤ +125 °C and SO8 package (automotive). 2000 Feb 01 3 Philips Semiconductors Preliminary specification Low dropout voltage/quiescent current 5 V voltage regulator with enable FUNCTIONAL DESCRIPTION The TDA3674 is a fixed 5 V regulator which can deliver output currents up to 100 mA.FEATURES
● Fixed 5 V, 100 mA regulator with enable function● Supply voltage range up to 33 V (45 V)
● Very low quiescent current of 15 µA (typical value)
● Very low dropout voltage
● High ripple rejection
● Very high stability: – Electrolytic capacitors: Equivalent Series Resistance (ESR) < 38 Ω at IREG ≤ 25 mA – Other capacitors: 100 nF at 200 µA ≤ IREG ≤ 100 mA.
● Pin compatible family TDA3672 to TDA3676
● Protections: – Reverse polarity safe (down to −25 V without high reverse current) – Negative transient of 50 V (RS = 10 Ω, t < 100 ms) QUICK REFERENCE DATA SYMBOL Supply VP supply voltage TDA3674T TDA3674AT Iq quiescent supply current VP = 14.4 V; IREG = 0 mA; VI(EN) = 5 V 8 V ≤ VP ≤ 22 V; IREG = 0.5 mA 6 V ≤ VP ≤ 45 V; IREG = 0.5 mA 0.5 mA ≤ IREG ≤ 100 mA; VP = 14.4 V VREG(drop) dropout voltage VP = 4.5 V; IREG = 50 mA; Tamb ≤ 85 °C regulator on 3 3 − 14.4 14.4 15 PARAMETER CONDITIONS MIN. TYP. TDA3674 – Able to withstand voltages up to 18 V at the output (supply line may be shor...