TDA3668AT Datasheet Text
INTEGRATED CIRCUITS
DATA SHEET
TDA3668AT Very low dropout voltage/quiescent current 5 V regulator with overvoltage switch off
Preliminary specification Supersedes data of 1999 Nov 23 File under Integrated Circuits, IC01 2000 Feb 01
Philips Semiconductors
Preliminary specification
Very low dropout voltage/quiescent current 5 V regulator with overvoltage switch off
Features
- Fixed 5 V, 100 mA regulator
- Supply voltage range up to 50 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 patible family TDA3661 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)
TDA3668AT
- Able to withstand voltages up to 18 V at the output (supply line may be short-circuited)
- ESD protected for all pins
- DC short-circuit safe to ground and VP of regulator output
- Temperature protection at Tj > 150 °C
- Load dump protection, which will switch off VREG during load dump. GENERAL DESCRIPTION The TDA3668AT is a fixed 5 V voltage regulator with a very low dropout voltage and quiescent current, which operates over a wide supply voltage range. The regulator should use a supply voltage of VP ≤ 50 V. It has a temperature range of
- 40 °C ≤ Tamb ≤ +125 °C, and it is available as an automotive version in an SO8 package.
QUICK REFERENCE DATA SYMBOL Supply VP Iq VREG supply voltage quiescent supply current regulator on load dump; t ≤ 50 ms; tr ≥ 2.5 ms VP = 14.4 V; IREG = 0 mA 8 V ≤ VP ≤ 22 V; IREG = 0.5 mA 6 V ≤ VP ≤ 24 V; IREG = 0.5 mA; Tamb ≤ 125 °C Regulator output output...