データシート TS29101 PDF ( 特性, スペック, ピン接続図 )

部品番号 TS29101
部品説明 (TS29100 - TS29102) 1.0A Ultra Low Dropout Positive Voltage Regulator
メーカ Taiwan Semiconductor Company
ロゴ Taiwan Semiconductor Company ロゴ 
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TS29101 Datasheet, TS29101 PDF,ピン配置, 機能
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.
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.
Operating Temp. Package
-40 ~ +125 oC
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.
Battery power equipment
Automotive electronics
High efficiency “Green” computer system
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 oC)
High efficiency linear power supplies
High efficiency post regulator for switching supply
Vin (operate)
-20V ~ +60
Internally Limited
-40 ~ +125
-65 ~ +150
1-1 2003/12 rev. A

1 Page

TS29101 pdf, ピン配列
Thermal Performance
Thermal Resistance
Junction to Ambient
Package type
Typ Unit
15 oC/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.
3-3 2003/12 rev. A


TS29101 電子部品, 半導体
Application Information
Application Information
The TS29100/1/2 series are high performance with low
dropout voltage regulator suitable for moderate to high
current and voltage regulator application. Its
4000mA(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 TS29100/1/2 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 TS29100/1/2 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. TS29100/1/2 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 TS29100/1/2 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.
Adjustable Regulator Design
The adjustable regulator versions (TS29102) is allow
to programming the output voltage anywhere between
1.25 and the 26V maximum operating rating of the
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
TS29101 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
Enable Input
TS29101 and TS29102 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.
6-6 2003/12 rev. A

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