TS29100/1/2
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 TS29100/1/2 series are using process with a PNP pass element for high current, high accuracy and low dropout
voltage regulators. These regulator s feature 400mV(typ) dropout voltages and very low ground current, these devices
also find applications in lower current and low dropout critical systems, where their tiny dropout voltage and ground
current values are important attributes.
The TS29100/1/2 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 TS29101 and TS29102, 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 and 8-pin SOP pacakge.
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
+60V Transient peak voltage
-20V Reverse peak voltage
Zero current shutdown mode
Error flag signals output out of regulation
Internal current limit
Thermal shutdown protection
Ordering Information
Part No.
TS29100CWxx
TS29101CSxx
TS29102CSxx
TS29102CS
Note: Where
xx
denotes voltage option, available are
12V, 5.0V, 3.3V and 2.5V. Leave blank for
adjustable version. Contact factory for additional
voltage options.
-40 ~ +125
o
C
SOP-8
Operating Temp.
(Junction)
Package
SOT-223
Applications
Battery power equipment
Automotive electronics
High efficiency “Green” computer system
High efficiency linear power supplies
High efficiency post regulator for switching supply
Absolute Maximum Rating
(Note 1)
Input Supply Voltage (Note 2)
Operation Input Voltage
Power Dissipation (Note 3)
Operating Junction Temperature Range
Storage Temperature Range
Lead Soldering Temperature (260
o
C)
Vin
Vin (operate)
P
D
T
J
T
STG
-20V ~ +60
26
Internally Limited
-40 ~ +125
-65 ~ +150
5
V
V
W
o
o
C
C
S
TS29100/1/2
1-1
2003/12 rev. A
Electrical Characteristics
Vin = Vout + 1V, Venable= 2.4V, I
L
= 10mA, C
o
= 10uF, Adjustable versions are programmed to 5V output, Ta = 25
o
C
unless otherwise specified.
Parameter
Output Voltage
Output Voltage
Input Supply Voltage
Output Voltage Temperature
Coefficient
Line Regulation
Load Regulation
Dropout Voltage (Note 4)
Conditions
10mA
≤
I
L
≤
1.0A,
Vo+1V
≤
Vin
≤
26V
Min
0.990|Vo|
0.980|Vo|
--
--
Typ
12 / 5.0
3.3/ 2.5
--
20
0.05
0.2
100
200
400
4
10
2.0
600
400
260
Max
1.010|Vo|
1.020|Vo|
26
100
0.5
1.0
200
Unit
V
V
ppm/
o
C
%
%
mV
Vo+1V
≤
Vin
≤
26V
10mA
≤
I
L
≤
1.0A
I
L
=100mA
I
L
=500mA
I
L
=1.0A
--
--
--
--
--
--
--
--
--
--
--
600
--
20
--
--
--
--
uVrms
A
mA
Quiescent Current (Note 5)
Short Circuit Current (Note 6)
Output Noise,
10Hz to 100KHz, I
L
=100mA
I
L
=500mA
I
L
=1.0A
Vout=0
C
L
=2.2uF
C
L
=10uF
C
L
=33uF
Reference (TS29102CS)
Reference Voltage
Reference Voltage
Adjust Pin Bias Current
Reference Voltage Temperature
Coefficient
Adjust Pin Bias Current
Temperature Coefficient
--
0.1
--
nA/
o
C
(Note 7)
10mA
≤
I
L
≤
1.5A,
2.3V
≤
Vin
≤
26V
--
--
40
20
80
--
nA
ppm/
o
C
0.980|Vo|
0.970|Vo|
1.24
1.020|Vo|
1.030|Vo|
V
Flag Output (TS29101CS)
Output Leakage Current
Output Low Voltage
Upper Threshold Voltage
Lower Threshold Voltage
Hysteresis
V
OH
=26V
Vin=4.5V, I
OL
=250uA
(Note 8)
(Note 8)
(Note 8)
--
--
40
--
--
--
--
60
75
15
2
300
--
95
--
uA
mV
mV
mV
mV
Enable Input (TS29101 / TS29102)
Input Logic Voltage
Enable Pin Input Current
Regulator Output Current
Shutdown
Low (OFF)
High (ON)
Ven=26V
Ven=0.8V
Ven
≤
0.8V, Vin
≤
26V,
Vout=0
--
2.4
--
--
--
--
--
--
--
10
0.8
--
750
5
500
uA
uA
V
TS29100/1/2
2-2
2003/12 rev. A
Thermal Performance
Condition
Thermal Resistance
Junction to Ambient
Package type
SOT-223
SOP-8
Typ
15
20
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: Maximum positive supply voltage of 60V must be limited duration (<100mS) and duty cycle (<1%).
Note 3: 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.
Note 4: 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 5: 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.
Note 6: Output current will decrease with increasing temperature, but it will be not dropped below 1.0A at the maximum
specified temperature.
Note 7: 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. Specification are for a 200mA load pulse at Vin=20V (a 4W
pulse) for T=10mS
Note 8: Comparator thresholds are expressed in terms of a voltage differential at the adjust terminal below the nominal
reference voltage measured at 6V input. To express these thresholds in terms of output voltage change,
multiply by the error amplifier gain = Vout / Vref = (R1+R2) / R2. For example, at a programmed output voltage
of 5V, the error output is guaranteed to go low when the output drops by 95mV x 5V / 1.24V = 384mV.
Thresholds remain constant as a percent of Vout as Vout is varied, with the dropout warning occurring at
typically 5% below nominal, 7.7% guaranteed.
TS29100/1/2
3-3
2003/12 rev. A
Block Diagram
TS29100
TS29101 & TS29102
* Feedback network is fixed output versions only (TS29101CSxx )
** Adjustable output version only (TS29102CS)
TS29100/1/2
4-4
2003/12 rev. A
Pin Assignment
Pin No.
TS29100
TS29101
1
1
2
3
2
5,6,7,8
3
4
4
TS29102
1
2
5,6,7,8
3
Pin
Configuration
Enable
Input
Ground
Output
Flag
Adjust
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.
Adjustment input: Feedback input. Connect to resistive
voltage-divider network.
Typical Application Circuit
TS29100
TS29101
TS29102
TS29100/1/2
5-5
2003/12 rev. A
PCB设计
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