TSC TS4264CW50

TS4264
150mA Ultra Low Drop Out Voltage Regulator
Pin assignment:
1. Input
2. Ground
3. Output
High Input Voltage up to 45V
Low Dropout Voltage 0.5V max.
General Description
TS4264 is a 5V low-drop fixed-voltage regulator in an SOT-223 package. The IC regulates an input voltage in the range
of 5.5V < Vin < 45V to Vout(rated) = 5.0V. The maximum output current is more than 150mA. This IC is designed with
short circuit-proof and features temperature protection that disables the circuit at over-temperature.
Features
Ordering Information
Fixed output voltage 5V
Part No.
Output voltage tolerance +/-2 %
TS4264CW50
Operating Temp.
o
-40 ~ 150 C
Package
SOT-223
150mA current capability
Ultra low drop out voltage
Pin Definition and Function
Very low current consumption
Over temperature protection
Short-circuit proof
Pin
Symbol
1
Input
Function
Block to ground directly on IC with
ceramic capacitor
Reverse polarity proof
Wide temperature range
Suitable for use in automotive electronics
2
Ground Ground
3
Output
Block to ground with 10uF capacitor,
ESR < 10Ω Block Diagram
TS4264
1-1
2004/01 rev. A
Absolute Maximum Rating
Parameter
Symbol
Values
Unit
Vin
-42 ~ 45
V
Vin(opr)
5.5 ~ 45
V
Vout
-1 ~ 16
V
PD
Internally Limited
W
IGND
50
mA
TJ
-40 ~ +150
o
C
TSTG
-50 ~ +150
o
C
Symbol
Values
Junction to Ambient
RΘja
80
Junction to Case
RΘjc
18
Input Supply Voltage
Operating Input Voltage
Output Voltage
Power Dissipation
Ground Current
Operating Junction Temperature Range
Storage Temperature Range
Thermal Performance
Parameter
Unit
o
C/W
Electrical Characteristics
Vin = 13.5V, -40 ≤ Tj ≤ +150, unless otherwise specified.
Parameter
Output Voltage
Conditions
Min
Typ
Max
Unit
6V ≤ Vin ≤ 28V, 5mA ≤ Io ≤ 100mA
4.9
5.0
5.1
V
150
--
--
mA
Output Current Limited
Line Regulation
6V ≤ Vin ≤ 28V, Io=5mA
--
15
30
mV
Load Regulation
5mA ≤ Io ≤ 100mA, Vin= 6V
--
--
90
mV
Dropout Voltage (note 1)
Io=100mA
--
0.25
0.5
V
Current Consumption
Io= 1mA
--
--
400
uA
(Iq= Iin – Iout)
Io= 100mA
--
10
15
mA
Temperature Stability
Io=10mA
--
0.5
--
%
Power Supply Ripple Rejection
f = 100Hz, Vr= 0.5Vp-p
--
54
--
dB
Note 1: Drop voltage = Vin – Vout
(measured where Vout has dropped 100mV from the nominal value obtained at Vin= 13.5V)
TS4264
2-2
2004/01 rev. A
Typical Application Circuit
Application Information
Dimensioning Information on External Components
The input capacitor Cin is necessary for compensating line influences. Using a resistor of approx. 1Ω in series with
Cin, the oscillating of input inductivity and input capacitance can be clamped. The output capacitor Cout is necessary
for the stability of the regulating circuit. Stability is guaranteed at values Cout ≥10uF and an ESR ≤ 10Ω within the
operating temperature range.
Circuit Description
The control amplifier compares a reference voltage, which is kept highly precise by resistance adjustment, to a voltage
that is proportional to the output voltage and drives the base of the series transistor via a buffer. Saturation control,
working as a function of load current, prevents any over-saturation of the power element. The IC is additionally
protected against overload, over temperature and reverse polarity
TS4264
3-3
2004/01 rev. A
Electrical Characteristics Curve
Figure 1: dropout voltage vs output current
Figure 2: output current vs input voltage
Figure 3: consumption vs output current
Figure 4: consumption vs output current
Figure 5: consumption vs input voltage
Figure 6: output voltage vs temp.
TS4264
4-4
2004/01 rev. A
SOT-223 Mechanical Drawing
A
B
C
J
K
D
F
G
E
TS4264
5-5
G
H
0.835
6.700
1.035
7.300
0.032
0.263
0.041
0.287
I
J
K
0.250
10°
1.550
0.355
16°
1.800
0.010
10°
0.061
0.014
16°
0.071
DIM
I
H
A
B
C
D
E
F
SOT-223 DIMENSION
MILLIMETERS
INCHES
MIN
MAX
MIN
MAX
6.350
6.850
0.250
0.270
2.900
3.100
0.114
0.122
3.450
3.750
0.136
0.148
0.595
0.635
0.023
0.025
4.550
4.650
0.179
0.183
2.250
2.350
0.088
0.093
2004/01 rev. A