TS29151/52/53

1-1

2003/12 rev. D

TS29151/52/53

1.5A Ultra Low Dropout Positive Voltage Regulator

Low Dropout Voltage 0.6V max.

Enable Input Control

Adjustable Output

Error Flag Detection

General Description

The TS29151/52/53 series are using process with a PNP pass element for high current, high accuracy and low dropout
voltage regulators. These regulator s feature 350mV(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 TS29151/52/53 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 TS29151 and TS29152, the enable pin may be tied to Vin if it is not required for enable control. This series are
offered in 5-pin TO-263, TO-220 package.

Features

Dropout voltage typically 0.6V @Io=1.5A

Output current up to 1.5A

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

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.

Part No.

Operating Temp.

(Junction)

Package

TS29151CZ5-xx

TS29152CZ5

TS29153CZ5

TO-220-5L

TS29151CM5-xx

TS29152CM5

TS29153CM5

-40 ~ +125

TO-263-5L

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)

Vin

-20V ~ +60

Operation Input Voltage Vin

(operate)

26 V

Power Dissipation (Note 3)

Internally Limited

Operating Junction Temperature Range

-25 ~ +125

Storage Temperature Range

STG

-65 ~ +150

Lead Soldering Temperature (260

5 S

TS29151/52/53

2-2

2003/12 rev. D

Electrical Characteristics

Vin = Vout + 1V, Venable= 2.4V, I

= 10mA, C

= 10uF, Adjustable versions are programmed to 5V output, Tj = 25

unless otherwise specified.

Parameter Conditions

Min

Typ

Max

Unit

Output Voltage

0.990|Vo|

1.010|Vo|

Output Voltage

10mA

1.5A,

Vo+1V

Vin 26V

0.980|Vo|

12 / 5.0
3.3/ 2.5

1.020|Vo|

Input Supply Voltage

Output Voltage Temperature
Coefficient

100

ppm/

Line Regulation

Vo+1V

Vin 26V

0.05

0.5

Load Regulation

10mA

1.5A

0.2

1.0

Dropout Voltage (Note 4)

=100mA

=750mA

=1.5A

--
--
--

200
350

200

600

Quiescent Current (Note 5)

=750mA

=1.5A

--
--

Short Circuit Current (Note 6)

Vout=0

2.1

3.5

Output Noise,
10Hz

to 100KHz, I

=100mA

=2.2uF

=10uF

=33uF

--
--
--

600
400
260

--
--
--

uVrms

Reference (TS29152 / TS29153)

Reference Voltage

0.980|Vo|

1.020|Vo|

Reference Voltage

10mA

1.5A,

2.3V

Vin 26V

0.970|Vo|

1.24

1.030|Vo| V

Adjust Pin Bias Current

Reference Voltage Temperature
Coefficient

(Note

-- 20 --

ppm/

Adjust Pin Bias Current
Temperature Coefficient

-- 0.1 --

nA/

Flag Output (TS29151 / TS29153)

Output Leakage Current

=26V --

Output Low Voltage

Vin=4.5V, I

=250uA --

300

Upper Threshold Voltage

(Note 8)

Lower Threshold Voltage

(Note 8)

Hysteresis

(Note

-- 15 --

Enable Input (TS29151 / TS29152)

Low (OFF)

0.8

Input Logic Voltage

High (ON)

2.4

Ven=26V --

750

Enable Pin Input Current

Ven=0.8V --

Regulator Output Current
Shutdown

Ven

0.8V, Vin 26V,

Vout=0

-- 10 500

TS29151/52/53

3-3

2003/12 rev. D

Thermal Performance

Condition Package

type

Typ Unit

TO-220-5L 60

Thermal Resistance

Junction to Ambient

TO-263-5L 80

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, ja, 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 ja 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 1.5A 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.

Block Diagram

* Feedback network is fixed output versions only (TS29151)

** Adjustable output version only (TS29152 / TS29153)

TS29151/52/53

5-5

2003/12 rev. D

Application Information

The TS29151/52/53 series are high performance with
low dropout voltage regulator suitable for moderate to
high current and voltage regulator application. Its
350mA(typ) dropout voltage at full load and over
temperature makes it especially valuable in battery
power systems and as high efficiency noise filters in
post regulator applications. Unlike normal NPN
transistor design, where the base to emitter voltage
drop and collector to emitter saturation voltage limit the
minimum dropout voltage, dropout performance of the
PNP output of these devices is limited only by low Vce
saturation voltage.
The TS29151/52/53 series is fully protected from
damage due to fault conditions. Linear current limiting is
provided. Output current during overload conditions is
constant. Thermal shutdown the device when the die
temperature exceeds the maximum safe operating
temperature. Transient protection allows device survival
even when the input voltage spikes above and below
nominal. The output structure of these regulators allows
voltages in excess of the desired output voltage to be
applied without reverse current flow.

Capacitor Requirement

The TS29151/52/53 series requires an output capacitor
to maintain stability and improve transient response is
necessary. The value of this capacitor is dependent
upon the output current, lower currents allow smaller
capacitors. TS29151/52/53 series regulators are stable
with the 10uF minimum capacitor value at full load.
Where the regulator is powered from a source with high
AC impedance, a 0.1uF capacitor connected between
input and ground is recommended. The capacitor
should have good characteristics to above 250KHz. The
capacitance values will be help to improved transient
response, ripple rejection and output noise.

Minimum Load Current

The TS29151/52/53 series is specified between finite
loads. If the output current is too small leakage currents
dominate and the output voltage rises. A 10mA
minimum load current swamps any expected leakage
current across the operating temperature range.

Thermal Characteristics

TS29151/52/53 series linear regulators are simple to
use, the most complicated design parameters to
consider are thermal characteristics, thermal design
requires the following application specification
parameters:

Maximum ambient temperature, Ta

Output current, Iout

Output voltage, Vout

Input voltage, Vin

We calculate the power dissipation of the regulator
from these numbers and the device parameters from
this data sheet. A heatsink may be required depending
on the maximum power dissipation and maximum
ambient temperature of the application. Under all
possible operating conditions, the junction temperature
must be within the range specified under absolute
maximum ratings. To determine if the heatsink is
required, the power dissipated by the regulator, P

must be calculated.
The below formula shows the voltages and currents for
calculating the P

in the regulator:

Iin = I

/ I

= (Vin-Vout) * I

+ (Vin) * I

Ex. P

= (3.3V-2.5V) * 0.5A + 3.3V * 11mA

= 400mW + 36mW
= 436mW

Remark: I

is output load current,

is ground current.

Vin is input voltage
Vout is output voltage

The next parameter which must be calculated is the
maximum allowable temperature rise, T

(max). this is

calculated by the using to formula:
T

(max) = T

(max) � T

(max)

Where: T

(max) is the maximum allowable junction

temperature, which is 125

C for commercial

grade parts.

(max) is the maximum ambient

temperature which will be encountered in the
application. Using the calculated values for T

(max)

and P

, the maximum allowable value for the junction

to ambient thermal resistance, ja, can now be found:
ja = T

(max) / P

TS29151/52/53

6-6

2003/12 rev. D

Application Information (continues)

Adjustable Regulator Design

The adjustable regulator versions (TS29152/53) is
allow to programming the output voltage anywhere
between 1.25 and the 26V maximum operating rating
of the family.
Two resistors are used. Resistors can be quite large
up to 1M, because of the very high input impedance
and low bias current of the sense comparator, the
resistor values are calculated by:

R1 = R2 * [(Vout / 1.24) � 1]

Where is Vout the desired output voltage. Above
application circuit shows component definition.
Applications with widely varying load currents may
scale the resistors to draw the minimum load current
required for proper operation.

Error Flag

TS29151 and TS29153 versions feature an Error Flag,
which looks at the output voltage and signals an error
condition when this voltage drops 5% below its
expected value. The error flag is an open-collector
output that pulls low under fault conditions. It may sink
10mA. Low output voltage signifies a number of
possible problems, including an over-current fault (the
device is in current limit) and low input voltage. The
flag output is inoperative during over temperature
shutdown conditions.

Enable Input

TS29151 and TS29152 versions feature an enable
(EN) input that allows ON/OFF control of the device.
Special design allows "zero" current drain when the
device is disabled�only microamperes of leakage
current flow. The EN input has TTL/CMOS compatible
thresholds for simple interfacing with logic, or may be
directly tied to 30V. Enabling the regulator requires
approximately 20uA of current.

TS29151/52/53

7-7

2003/12 rev. D

TO-220-5L Mechanical Drawing

TO-220 DIMENSION

MILLIMETERS INCHES

DIM

MIN MAX MIN MAX

A 10.00 10.50 0.394 0.413
B 3.240 4.440 0.128 0.175
C 2.440 2.940 0.096 0.116
D 0.260 1.020 0.010 0.040
E 1.570 1.830 0.062 0.072
F 13.31 14.13 0.524 0.556

G 4.475 5.225 0.176 0.206

H 1.170 1.370 0.046 0.054

I 27.60 29.44 1.087 1.159

J 2.175 2.925 0.086 0.115

K 0.297 0.477 0.012 0.019

L 8.280 8.800 0.326 0.346

M 6.010 6.510 0.237 0.256

N 14.29 15.31 0.563 0.603

TO-263-5L Mechanical Drawing

TO-263 DIMENSION

MILLIMETERS INCHES

DIM

MIN MAX MIN MAX

A 10.220 10.260 0.402 0.404
B 14.600 15.870 0.575 0.625
C 0.750 0.770 0.030 0.030
D 1.573 1.827 0.062 0.072
E 4.560 4.570 0.179 0.180
F 1.240 1.270 0.049 0.050

G 2.280 2.790 0.090 0.110

H 0.280 0.320 0.011 0.013

I 8.240 8.280 0.324 0.326

J 1.540 1.800 0.060 0.071

Электронный компонент: TS29153CZ5-12