Datasheet

TDA4863-2
Electrical Characteristics
Version 2.1 15 22 Feb 2005
Overvoltage Regulator
Threshold Current I
OVR
35 40 45 µA T
j
= 25°C ,
V
VAOUT
= 3.5 V
Current Comparator
Input Bias Current I
BISENSE
-1 -0.2 1 µA V
ISENSE
= 0 V
Input Offset Voltage
(T
j
= 25 °C)
V
ISENSEO
25 mV V
VAOUT
= 2.7 V
V
MULTIN
= 0 V
Max Threshold Voltage V
ISENSEM
0.95 1.0 1.05 V
Threshold at OVR V
ISENOVR
0.05 I
OVR
= 50 µA
Leading Edge Blanking t
LEB
100 200 300 ns
Shut Down Delay t
dISG
80 130
Detector
Upper Threshold Voltage V
DETINU
1.5 1.6 V
Lower Threshold Voltage V
DETINL
0.95 1.1
Hysteresis V
DETINHY
0.25 0.4 0.55
Input Current I
BDETIN
-1 -0.2 1 µA V
DETIN
= 2 V
Input Clamp Voltage
High State
Low State
V
DETINHC
V
DETINLC
4.5
0.1
4.9
0.4
5.3
0.7
V
I
DETIN
= 5 mA
I
DETIN
= -5 mA
Multiplier
Input bias current I
BMULTIN
-1 -0.2 1 µA V
MULTIN
= 0 V
Dynamic voltage range
MULTIN
V
MULTIN
0 to 4 V V
VAOUT
= 2.75 V
Dynamic voltage range
VAOUT
V
VAOUT
V
FB
to
V
FB
+
1.5
V
MULTIN
= 1 V
Multiplier Gain K
low
K
high
0.3
0.7
V
VAOUT
< 3 V,
V
MULTIN
= 1 V
V
VAOUT
> 3.5V,
V
MULTIN
= 1 V
K = deltaV
ISENSE
/ deltaV
VAOUT
at V
MULTIN
= constant
3.2 Characteristics (cont’d)
Unless otherwise stated, -40°C < T
j
< 150°C, V
CC
= 14.5 V
Parameter Symbol Limit Values Unit Test Condition
min. typ. max.