TDA3675 Просмотр технического описания (PDF) - Philips Electronics
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TDA3675 Datasheet PDF : 16 Pages
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Philips Semiconductors
Low dropout voltage/quiescent current
8.5 V voltage regulator with enable
Preliminary specification
TDA3675
FEATURES
• Fixed 8.5 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)
– Able to withstand voltages up to 18 V at the output
(supply line may be short-circuited)
– ESD protection for all pins
– DC short-circuit safe to ground and VP of the
regulator output
– Temperature protection at Tj > 150 °C.
GENERAL DESCRIPTION
The TDA3675 is a fixed 8.5 V voltage regulator with very
low dropout voltage and quiescent current, which operates
over a wide supply voltage range.
The IC is available as:
• TDA3675T: VP ≤ 33 V, −40 °C ≤ Tamb ≤ +85 °C and
SO8 package (non-automotive)
• TDA3675AT: VP ≤ 45 V, −40 °C ≤ Tamb ≤ +125 °C and
SO8 package (automotive).
QUICK REFERENCE DATA
SYMBOL
PARAMETER
Supply
VP
Iq
supply voltage
TDA3675T
TDA3675AT
quiescent supply current
Regulator output
VREG
regulator output voltage
VREG(drop)
dropout voltage
CONDITIONS
MIN. TYP. MAX. UNIT
regulator on
VP = 14.4 V; IREG = 0 mA;
VI(EN) = 5 V
3
14.4 33
V
3
14.4 45
V
−
15
30
µA
VI(EN) = 5 V
11.5 V ≤ VP ≤ 22 V; IREG = 0.5 mA 8.16 8.5 8.84 V
9.5 V ≤ VP ≤ 45 V; IREG = 0.5 mA 8.08 8.5 8.92 V
VP = 14.4 V;
0.5 mA ≤ IREG ≤ 100 mA
8.08 8.5 8.92 V
VP = 8.0 V; IREG = 50 mA
−
0.18 0.3 V
ORDERING INFORMATION
TYPE
NUMBER
TDA3675T
TDA3675AT
NAME
SO8
SO8
PACKAGE
DESCRIPTION
plastic small outline package; 8 leads; body width 3.9 mm
plastic small outline package; 8 leads; body width 3.9 mm
VERSION
SOT96-1
SOT96-1
2000 Feb 01
2
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