TS39100/1/2/3
1.0A Ultra Low Dropout Positive Voltage Regulator
Low Dropout Voltage 0.4V (typ.)
Enable Input Control
Adjustable Output
Error Flag Detection
General Description
The TS39100/1/2/3 series are 1A ultra low dropout linear voltage regulators that provide low voltage, high current output
from an extremely small package. These regulator offers extremely low dropout (typically 400mV at 1A) and very low
ground current (typically 12mA at 1A).
The TS39100/1/2/3 series are fully protected against over current faults, reversed input polarity, reversed lead insertion,
over temperature operation, positive and negative transient voltage spikes, logic level enable control and error flag which
signals whenever the output falls out of regulation.
On the TS39101/2/3, the enable pin may be tied to Vin if it is not required for enable control. This series are offered in
3-pin SOT-223 (TS39100), 8-pin SOP (TS39101/2) and 5-pin TO-252 (TS39103) package.
Features
Dropout voltage typically 0.4V @Io=1.0A
Output current up to 1.0A
Low ground current
Output voltage trimmed before assembly
Extremely fast transient response
Reversed leakage protection
Reverse battery protection
Error flag signals output out of regulation
Internal current limit
Thermal shutdown protection
Ordering Information
Part No.
TS39100CWxx
TS39100CPxx
TS39101CSxx
TS39102CS
TS39103CP5xx
o
-40 ~ +125 C
Operating Temp.
(Junction)
Package
SOT-223
TO-252
SOP-8
TO-252-5L
Note: Where
xx
denotes voltage option, available are
5.0V, 3.3V, 2.5V, 1.8V and 1.5V. Leave blank for
adjustable version (only TS39103). Contact to
factory for addition output voltage option.
Applications
Battery power equipment
LDO linear regulator for PC add-in cards
PowerPC
TM
High efficiency linear power supplies
High efficiency post regulator for switching supply
Low-voltage microcontrollers and digital logic
SMPS post regulator
power supplies
Multimedia and PC processor supplies
Absolute Maximum Rating
(Note 1)
Supply Voltage
Enable Voltage
Storage Temperature Range
Lead Soldering Temperature (260
o
C)
ESD
Vin
Ven
T
STG
-20V ~ +20
+20
-65 ~ +150
5
(Note 3)
V
V
o
C
S
TS39100/1/2/3
1-10
2004/06 rev. E
Operating Rating
(Note 2)
Operation Input Voltage
Operation Enable Voltage
Power Dissipation (Note 4)
Operating Junction Temperature Range
Vin (operate)
Ven (operate)
P
D
T
J
+2.25 ~ +16
+2.25 ~ +16
Internally Limited
-40 ~ +125
V
V
W
o
C
Electrical Characteristics
Vin = Vout + 1V, Venable= 2.25V, Tj = 25
o
C, unless otherwise specified.
Parameter
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Output Voltage Temp. Coefficient
Dropout Voltage (Note 5)
Conditions
I
L
=10mA
10mA
≤
I
L
≤
1.0A,
Vo+1V
≤
Vin
≤
8V
I
L
=10mA, Vo+1V
≤Vin≤
16V
Vin=Vout+1V, 10mA≤I
L
≤1A
∆Vout=
-1%
I
L
=100mA
I
L
=500mA
I
L
=750mA
I
L
=1.0A
Min
0.990|Vo|
0.980|Vo|
--
--
--
--
--
--
--
--
--
--
--
--
Typ
Vout
Max
1.010|Vo|
1.020|Vo|
Unit
V
%
%
ppm/
o
C
mV
0.05
0.2
40
100
275
350
400
0.7
4.0
7.0
12.0
1.8
0.5
1.0
100
250
500
630
--
--
--
20
2.5
Quiescent Current (Note 6)
Vin=V
out
+1V
I
L
=100mA
I
L
=500mA
I
L
=750mA
I
L
=1.0A
mA
Current Limited
Vout=0, Vin=Vout+1V
A
Reference (TS39102)
Reference Voltage
Reference Voltage
Adjust Pin Bias Current
Reference Voltage Temp. Coefficient
Adjust Pin Bias Current Temp.
Coefficient
(Note 8)
(Note 7)
0.980|Vo|
0.970|Vo|
--
--
--
40
20
0.1
1.24
1.020|Vo|
1.030|Vo|
120
--
--
V
nA
ppm/
o
C
nA/
o
C
Flag Output (TS39101)
Output Leakage Current
Output Low Voltage (Note 9)
Upper Threshold Voltage
Lower Threshold Voltage
Hysteresis
V
OH
=16V
Vin=0.9 * Vout, I
OL
=250uA
% of Vout
% of Vout
--
--
--
93
--
--
--
--
--
1
2
400
99
--
--
uA
mV
%
%
%
Enable Input (TS39101 / 2 / 3)
Input Logic Voltage
Enable Pin Input Current
Low (OFF)
High (ON)
Ven=2.25V
Ven=0.8V
--
2.25
--
--
--
--
--
--
0.8
--
75
4
uA
V
TS39100/1/2/3
2-10
2004/06 rev. E
Thermal Performance
Condition
Thermal Resistance
Junction to Ambient
Package type
SOT-223
SOP-8
TO-252
Typ
15
20
25
Unit
o
C/W
Note 1: Absolute Maximum Rating is limits beyond which damage to the device may occur. For guaranteed
specifications and test conditions see the Electrical Characteristics.
Note 2: The device is not guaranteed to operate outside its operating rating.
Note 3: Devices are ESD sensitive. Handling precautions recommended.
Note 4: The maximum allowable power dissipation is a function of the maximum junction temperature, Tj, the junction to
ambient thermal resistance,
θja,
and the ambient temperature, Ta. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. The effective
value of
θja
can be reduced by using a heatsink, Pd
(max)
= (Tj
(max)
– Ta) /
Θja.
Note 5: Dropout voltage is defined as the input to output differential at which the output voltage drops -1% below its
nominal value measured at 1V differential.
Note 6: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the
ground pin current and output load current, Iin = Ignd + Iout.
Note 7: Vref
≤
Vout
≤
(Vin – 1V), 2.25V
≤
Vin
≤
16V, 10mA
≤
I
L
≤
1.0A.
Note 8: Output voltage temperature coefficient is
∆Vout
(worse cast) / (Tj
(max)
- Tj
(min)
) where is Tj
(max)
+125
o
C and
Tj
(min)
is 0
o
C.
Note 9: For adjustable device and fiexed device with Vout > 2.25V.
Block Diagram
TS39100
TS39100/1/2/3
3-10
2004/06 rev. E
Block Diagram
TS39101 & TS39102 & TS39103
* Feedback network is fixed output versions only (TS39101CSxx & TS39103CP5xx )
** Adjustable output version only (TS39102CS & TS39103CP5)
TS39100/1/2/3
4-10
2004/06 rev. E
Pin Assignment
Pin No.
TS39100
TS39101
1
TS39102
1
TS39103
1
Pin Configuration
Pin
Description
Enable (input): TTL/COMS compatible
input. Logic high is enable; logic low or
open is shutdown
Unregulated input: +26V maximum
supply
Ground: Ground pin and TAB/heatsink
are internally connected.
Regulator output
Error Flag (output): Open-collector
output. Active low indicates an output
fault condition, if no used, leave open.
Adjustment input: Feedback input.
Connect to resistive voltage-divider
network.
Enable
1
2
3
2
5,6,7,8
3
4
2
5,6,7,8
3
2
3
4
Input
Ground
Output
Flag
(fixed output voltage)
5
4
Feed Back
(adjustable voltage)
Typical Application Circuit
TS39100/1/2/3
5-10
2004/06 rev. E
嵌入式系统
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