TS5213
80mA Low Noise LDO Voltage Regulator
with Enable Function
SOT-25
Pin Definition:
1. Input
2. Ground
3. Enable
4. N/C
5. Output
SOT-353
Pin Definition:
1. Enable
2. N/C or Ground
3. Ground
4. Output
5. Input
General Description
TS5213 is an efficient linear voltage regulator with ultra low noise output, very low dropout voltage (typically 20mV at
light loads and 300mV at 80mA), and very low ground current (225uA at 20mA), providing high output current even
when the application requires very low dropout voltage. The Chip Enable (EN) includes a CMOS or TTL compatible
input allows the output to be turned off to prolong battery life. When shutdown, power consumption drops nearly to
zero. TS5213 is included a precision voltage reference, error correction circuit, a current limited output driver, over
temperature shutdown and revered battery protection.
Features
●
●
●
●
●
●
Ultra Low Noise Output
Output Current up to 80mA
Low Power Consumption
“Zero” Off-mode Consumption
Logic Controlled Electronic Enable
Current Limit & Thermal Shutdown Protection
Ordering Information
Part No.
Package
Packing
TS5213CX5xx RF
SOT-25
3Kpcs / 7” Reel
TS5213CU5xx RF
SOT-353
3Kpcs / 7” Reel
Note: Where
xx
denotes voltage option, available are
50=5.0V
33=3.3V
30=3.0V
25=2.5V
Contact factory for additional voltage options.
Application
●
●
●
●
●
Cellular Telephones
Palmtops, Notebook Computers
Battery Powered Equipment
SMPS Post Regulator and DC to DC Modules
High-efficiency Linear Power Supplies
Typical Application Circuit
TS5213CX5xx
V
IN
V
OUT
C
OUT
0.47uF
●
Portable Application
Block Diagram
EN
off
on
TS5213CU5xx
EN
off
on
V
IN
V
OUT
C
OUT
0.47uF
EN may be connected to V
IN
pin to regulation ON
C
IN
> 0.1uF in basic operating
C
OUT
>0.47uF in low noise operating
1/8
Version: B07
TS5213
80mA Low Noise LDO Voltage Regulator
with Enable Function
Absolute Maximum Rating
(Note 1)
Parameter
Input Supply Voltage
Enable Input Voltage
Power Dissipation (Note 2)
Thermal Resistance
SOT-25
SOT-353
Symbol
V
IN
V
CE
P
D
Ө
JA
T
J
T
STG
o
Limit
-20~ +20
-20~ +20
Internal limited
220
450
-40 ~ +125
-65 ~ +150
5
Unit
V
V
o
C/W
o
o
Operating Junction Temperature Range
Storage Temperature Range
Lead Soldering Temperature (260 C)
C
C
S
Recommend Operating Rating
(Note 2)
Parameter
Input Supply Voltage
Enable Input Voltage
Symbol
V
IN
V
CE
Limit
+2.5 ~ +16
0 ~ V
IN
Unit
V
V
Electrical Specification
(
V
IN
=Vo+1V, Io=1mA, C
OU
T=0.47uF, V
EN
≥2V,
T
J
= 25
o
C, unless otherwise specified.)
Parameter
Output Voltage
Output Voltage Temp. Coefficient
Line Regulation
Load Regulation (Note 6)
Conditions
V
IN
=Vo + 1V
-40ºC
≤
T
J
≤
+125ºC
(Note 5)
Vo+1V
≤
V
IN
≤
16V
0.1mA
≤
Io
≤
80mA
Io=100uA
Io=20mA
Io=50mA
Io=80mA
V
EN
≤0.4V
(shutdown)
V
EN
≥2V
Io=100uA
Io=20mA
Io=50mA
Io=80mA
Min
-3
-4
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
Typ
--
--
50
0.008
0.08
20
200
250
280
0.01
80
225
850
1800
180
65
0.05
--
--
0.01
15
Max
3
4
200
0.3
0.3
--
250
--
600
10
--
750
--
3000
250
--
--
0.6
--
1
50
Unit
%
ppm/ C
%
%
o
Dropout Voltage (Note 7)
mV
Quiescent Current
uA
Ground Pin Current (Note 8)
(avtive)
uA
Output Current Limit
Power Supply Rejection Ratio
Thermal Regulation (Note 9)
Enable function
Enable Input Logic-Low Voltage
Enable Input Logic-High Voltage
Enable Input Current
V
OUT
=0V
At f=100Hz, Io=100uA,
mA
dB
%/W
V
V
uA
Regulation shutdown
Regulation enable
V
IL
≤
0.6V
V
IH
≥
2.0V
--
2.0
--
--
2/8
Version: B07
TS5213
80mA Low Noise LDO Voltage Regulator
with Enable Function
Electrical Specification (Continue)
Note 1: Exceeding the absolute maximum rating may damage the device.
Note 2: The maximum allowable power dissipation at any Ta is Pd(max) = [T
J(MAX)
- Ta] +
Ө
JA
. Exceeding the
maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into
thermal shutdown.
Note 3: Devices are ESD sensitive. Handling precautions recommended.
Note 4: The device is not guaranteed to function outside its operating rating.
Note 5: Output voltage temperature coefficient is defined as the worst case voltage change divided by the total
temperature range.
Note 6: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested
for load regulation in the load range from 1mA to 80mA. Changes in output voltage due to heating effects are
covered by the thermal regulation specification.
Note 7: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its
nominal value measured at 1V differential.
Note 8: Ground pin current is the regulator quiescent current plus pass transistor base current. The total current drawn
from the supply is the sum of the load current plus the ground pin current.
Note 9: Thermal regulation is defined as the change in output voltage at a time “t” after a change in power dissipation
is applied, excluding load or line regulation effects. Specifications are for a 80mA load pulse at V
IH
=16V for
t=10mS.
Application Information
Enable Input
TS5213 series feature an active-high (>2V) enable (EN) input that allows ON/OFF control of the regulator. Current
drain reduces to “zero” when the device is shutdown, with only micro-amperes of leakage current. The EN is
compatible with CMOS logic interfacing. EN may be directly tied to V
IH
and pulled up to the maximum supply voltage.
Input Capacitor Requirement
An input capacitor of 0.17uF or greater is recommended when the device is more than 10” away from the bulk AC
supply capacitance or when the supply is a battery.
Output Capacitor Requirement
The TS5213 series requires an output capacitor to maintain stability and improve transient response is necessary.
The TS5213 is ultra stable, requiring only 0.47uF of output capacitance for stability. It is stable with all type of
capacitors, including the tiny, low-ESR ceramic chip capacitors. The output capacitor value may be increased without
limit.
No Load Stability
The TS5213 series will remain stable and in regulation with no load, unlike many other voltage regulators. This is
especially important in CMOS RAM keep alive applications.
Fixed Output Regulator Application
V
IN
EN
off
on
V
OUT
C
OUT
0.47uF
TS5213 series is offered a smaller system solution, it is only
required a small multilayer ceramic capacitor for stability.
Low Noise Fixed Voltage Application
3/8
Version: B07
TS5213
80mA Low Noise LDO Voltage Regulator
with Enable Function
Application Information (Continue)
Thermal Characteristics
TS5213 series is designed to provide 80mA of continuous current in a very small package. Maximum power
dissipation can be calculated based on the output current and the voltage drop across the part. To determine the
maximum power dissipation of the package, use the junction-ambient thermal resistance of the device and the
following basic equation:
P
D(MAX)
= [ T
J(MAX)
– T
A
] /Θ
JA
T
J(MAX)
is the maximum junction temperature of the die(125 C), and Ta is the ambient operating temperature.
Θ
JA
is
layout dependent, the actual power dissipation of the regulator circuit can be determined using the equation:
P
D
= (V
IN
– V
OUT
) * I
OUT
+ V
IN
* I
GND
Substituting Pd(max) for Pd and solving for the operating conditions that are critical to the application will give the
maximum operating conditions for the regulator circuit. For example, when operating the TS5213CX550 at room
temperature with a minimum footprint layout, the maximum input voltage for a set output current can be determined
as follows:
o
o
o
P
D(MAX)
= (125 C – 25 C) / 220 C/W
P
D(MAX)
= 455mW
The junction to ambient thermal resistance for the minimum footprint is 220 C/W, the maximum power dissipation
must not be exceeded for proper operation. Using the output voltage of 5.0V and an output current of 80mA, the
maximum input voltage can be determined. Form the electrical characteristics table, the maximum ground current for
80mA output current is 1mA.
445mW = (V
IN
– 5.0V ) * 80mA + V
IN
* 1.8mA
445mW = V
IN
* 80mA – 5.0 * 80mA + V
IN
* 1.8mA
445mW = V
IN
* 80mA – 400mW + V
IN
* 1.8mA
845mW = V
IN
* 81.8mA
V
IN
(max) = 10.33V
Therefore, a 5.0V application at 80mA of output current can accept a maximum input voltage of 10.33V in a SOT-25
package.
o
o
4/8
Version: B07
TS5213
80mA Low Noise LDO Voltage Regulator
with Enable Function
Electrical Characteristics Curve
Figure 1. Output Voltage vs. Input Voltage
Figure 2. Ground Current vs. Output Current
Figure 3. Dropout Voltage vs. Output Current
Figure 4. Short Circuit Current vs. Input Voltage
Figure 5. Ripple Rejection vs. Frequency
5/8
Figure 6. Ripple Rejection vs. Frequency
Version: B07
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