TS4266G
Pin assignment:
1. Input
2. Inhibit
3. Output
4. Ground
Preliminary
150mA Ultra Low Drop Out Voltage Regulator with Inhibit
High Input Voltage up to 45V
Low Dropout Voltage 0.5V (max)
Low Power Consumption 40uA (typ)
General Description
TS4266G is a 5V low-drop fixed-voltage regulator in an SOT-223-4L package. It can be switched ON and OFF by the
Inhibit pin. It is functional and pin compatible to the TS4266, but with a reduced quiescent current of <1uA in OFF mode
and 40uA in ON mode. The TS4266G is especially designed for all applications that require very low quiescent current
in ON and OFF mode. It is designed to supply microprocessor systems under the sever condition of automotive
applications and therefore it is equipped with additional protection against over load, short circuit and over temperature.
TS4266G also can be used in other applications, where a stabilized voltage and the inhibit feature is required. 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 regulated at the inhibit pin pull high level voltage.
Features
Fixed output voltage 5V
Output voltage tolerance +/-3 %
150mA current capability
Ultra low drop out voltage
Very low current consumption 40uA (typ)
Over temperature protection
Short-circuit proof
Reverse polarity proof
Wide temperature range
Suitable for use in automotive electronics
Inhibit control
Ordering Information
Part No.
TS4266GCW450
Operating Temp.
-40 ~ 150
o
C
Package
SOT-223-4L
Pin Definition and Function
Pin
1
2
3
4
Symbol
Input
Inhibit
Output
Ground
Function
Block to ground directly on IC with
ceramic capacitor
Inhibit input, high level turn IC on
Block to ground with 10uF capacitor,
ESR < 4Ω
Ground
Block Diagram
TS4266G Preliminary
1-1
2004/12 rev. A
Absolute Maximum Rating
Parameter
Input Supply Voltage
Inhibit Supply Voltage
Operating Input Voltage
Output Voltage
Power Dissipation
Ground Current
Operating Junction Temperature Range
Storage Temperature Range
Symbol
Vin
Vinhibit
Vin(opr)
Vout
P
D
I
GND
T
J
T
STG
Values
-42 ~ 45
-42 ~ 45
5.5 ~ 45
-1 ~ 32
Internally Limited
50
-40 ~ +150
-50 ~ +150
Unit
V
V
V
V
W
mA
o
o
C
C
Thermal Performance
Parameter
Junction to Ambient
Junction to Case
Symbol
RΘja
RΘjc
Values
81
18
Unit
o
C/W
Electrical Characteristics
Vin = 13.5V, Vinhibit= 5V, -40
≤
Tj
≤
+150, unless otherwise specified.
Parameter
Output Voltage
Output Voltage
Output Current Limited
Line Regulation
Load Regulation
Dropout Voltage (note 1)
Current Consumption
(Iq= Iin – Iout)
Conditions
6V
≤
Vin
≤
21V, 5mA
≤
Io
≤
100mA
6V
≤
Vin
≤
16V, 5mA
≤
Io
≤
50mA
Min
4.85
4.90
150
Typ
5.0
5.0
--
15
50
0.25
0
40
1.7
68
Max
5.15
5.10
--
30
90
0.5
1
70
4
--
Unit
V
V
mA
mV
mV
V
6V
≤
Vin
≤
28V, Io=1mA
1mA
≤
Io
≤
100mA, Vin= 6V
Io=100mA
Vinhibit= 0V, Tj≤100
o
C
Io= 100uA
Io= 50mA
--
--
--
--
--
--
--
uA
mA
dB
Power Supply Ripple Rejection
f = 100Hz, Vr= 0.5Vp-p
Inhibit
Inhibit ON Voltage
Inhibit OFF Voltage
Inhibit Current
Pull Down Resistor
Vinhibit= 5V
See Inhibit Current
3.5
--
--
--
--
--
4
1.0
--
0.8
8
--
V
V
uA
MΩ
Note 1: Drop voltage = Vin – Vout
(measured where Vout has dropped 100mV from the nominal value obtained at Vin= 13.5V)
TS4266G Preliminary
2-2
2004/12 rev. A
Typical Application Circuit
Application Information
Dimensioning Information on External Components
The input capacitor Cin is necessary for compensating line influences (100nF ceramic capacitor recommended). Using
a resistor of approx. 1Ω in series with Cin, the oscillating of input inductivity and input capacitance can be clamped. In
the application circuit shown, an additional electrolytic input capacitor of 470uF is added in order to buffer supply line
influences. This capacitor is recommended, if the device is sourced via long supply lines of several meters.
The output capacitor Cout is necessary for the stability of the regulating circuit. Stability is guaranteed at values Cout
≥10uF
and an ESR
≤
4Ω within the operating temperature range.
Circuit Description
The control amplifier compares a reference voltage of 2.5V typical, the regulation loop controls the output to achieve
an output voltage of 5V with an accuracy of +/-2% at an input voltage up to 45V. The minimum required input voltage
is Vout + Vdrop.
The TS4266G can supply up to 150mA. However for protection reasons at high input voltage above 25V, the
maximum output current is reduced (SOA protection). The IC is additionally protected against overload, over
temperature and reverse polarity
TS4266G Preliminary
3-3
2004/12 rev. A
SOT-223-4L Mechanical Drawing
A
B
I
DIM
A
B
C
D
E
F
G
H
I
J
K
H
C
J
K
F
G
E
D
SOT-223-4L 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
0.835
6.700
0.250
10°
1.550
1.035
7.300
0.355
16°
1.800
0.032
0.263
0.010
10°
0.061
0.041
0.287
0.014
16°
0.071
TS4266G Preliminary
4-4
2004/12 rev. A
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