TS9001 Series
300mA CMOS LDO with Enable
SOT-25
Pin Definition:
1. Input
2. Ground
3. Enable
4. Bypass
5. Output
General Description
The TS9001 series is a positive voltage linear regulator developed utilizing CMOS technology featured low quiescent
current (30uA typ.) ,low dropout voltage, and high output voltage accuracy, making them ideal for battery applications.
The Chip Enable (CE) includes a CMOS or TTL compatible input allows the output to be turned off to prolong battery
life. The TS9001 series is included a precision voltage reference, error correction circuit, a current limited output driver,
over temperature shutdown, and a reference bypass pin to improve its already excellent low-noise performance.
Features
●
●
●
●
●
●
Dropout voltage typically 0.4V@Io=300mA (Vo>2.5V)
Output current up to 300mA
Low power consumption
Output voltage +/-2%
Internal current limit and thermal shutdown
Thermal shutdown protection
Ordering Information
Part No.
Package
Packing
TS9001xCX5 RF
SOT-25
3Kpcs / 7” Reel
Note: Where
x
denotes voltage option, available are
A=1.5V
D=1.8V,
K=2.5V,
P=3.0V,
S=3.3V,
Contact factory for additional voltage options.
Applications
●
●
●
●
●
●
Palmtops
Video recorders
Battery powered equipment
PC peripherals
High-efficiency linear power supplies
Digital signal camera
Block Diagram
Typical Application Circuit
EN (Pin 3) may be connected directly to Vin (Pin1)
Low noise operation: C
BYP
=470uF, C
OUT
>2.2uF
Basic operation: C
BYP
=not used, C
OUT
>1uF
1/6
Version: A07
TS9001 Series
300mA CMOS LDO with Enable
Absolute Maximum Rating
Parameter
Input Supply Voltage
Enable Input Voltage
Output Current
Power Dissipation
Thermal Resistance
Operating Junction Temperature Range
Storage Temperature Range
Lead Soldering Temperature (260 C)
Notes:
a. Stress above the listed absolute rating may cause permanent damage to the device.
o
Symbol
Vin
Vce
Io
P
D
Өja
Tj
T
STG
Limit
+7
Gnd-0.3 ~ Vin+0.3
Pd / (Vin – Vout)
380
260
-40 ~ +150
-65 ~ +150
5
Unit
V
V
mW
o
C/W
o
o
C
C
S
Electrical Characteristics
(Ta = 25
o
C, Io=1mA, Cout=2.2uF, Vce≥2V, unless otherwise noted)
Parameter
Output Voltage
Output Voltage Temperature
Coefficient
Maximum Output Current
Line Regulation
Conditions
Vin=Vo + 1V
Min
0.985|Vo|
--
Typ
50
--
--
0.2
0.2
300
800
2
30
450
60
75
30
Max
1.015|Vo|
--
--
0.3
1.0
Unit
V
ppm/ C
mA
%/V
o
Vin=Vo+1V,
Vo+1V
≤
Vin
≤
7V
Vin=Vo+1V,
1mA≤I
L
≤300mA
Vin=Vo+1V,
1mA≤I
L
≤200mA
Io=300mA,
Vout=Vo - 2%
Io=200mA,
Vout=Vo - 2%
Vout≥2.5V
Vout<2.5V
Vout≥2.5V
Vout<2.5V
300
--
--
--
--
--
--
--
--
--
--
--
Load Regulation
%/V
1.0
--
mV
1000
3
50
--
--
--
--
uA
uA
mA
dB
dB
uVrms
Dropout Voltage
Quiescent Current
Ground Pin Current
Output Current Limit
Power Supply Rejection Ratio
Power Supply Rejection Ratio
Output Noise
Enable Input
Enable Input Logic-Low Voltage
Enable Input Logic-High Voltage
Enable Input Current
Vin≤0.4V (shutdown)
Io=1mA to 300mA
Vout=0V
At f=1kHz, Io=100mA,
At f=1kHz, Io=100mA,
Cbypass=0.01uF
Io=10mA, f=10Hz to 100kHz,
10pF from bypass to Ground
Regulation shutdown
Regulation enable
V
IL
≤0.4V
V
IL
≥2.0V
--
2.0
--
--
--
--
0.01
1
0.4
--
1
5
V
V
uA
2/6
Version: A07
TS9001 Series
300mA CMOS LDO with Enable
Detail Description
Description
The TS9001 series of CMOS regulators contain a P-MOS pass transistor, voltage reference, error amplifier, over
current protection, thermal shutdown and short circuit protection.
The TS9001 series switches from voltage mode to current mode when the load exceeds the rated output current.
This prevents over stress. The TS9000 also incorporates current fold-back to reduce power dissipation when the
output is short circuit. This feature becomes active when the output drops below 1.05V, and reduces the current flow
by 65%. Full current is restored when the voltage exceeds 0.95V.
The internal P-channel pass transistor receives data from the error amplifier, over current shutdown, short output
protection and thermal protection circuits. During normal operation, the error amplifier compares the output voltage to
a precision reference. Over current and thermal shutdown circuits become active when the junction temperature
o
exceeds 150 C, or the current exceeds 300mA. During thermal shutdown, the output voltage remains low. Normal
o
operation is restored when the junction temperature drops below 120 C.
Enable
The Chip Enable pin normally floats high. When actively, pulled low, the PMOS pass transistor shut off, and all
internal circuits are powered down. In this state, the quiescent current is less than 5uA. This pin behaves much like an
electronic switch.
External Capacitor
The TS9001 series is stable with an output capacitor to ground of 2.2uF or greater. It can keep stable even with
higher or poor ESR capacitors.
A second capacitor is recommended between the input and ground to stabilize Vin. The input capacitor should be
larger than 0.1uF to have a beneficial effect.
A third capacitor can be connected between the Bypass pin and Ground. This capacitor can be a low cost polyester
film variety between the value of 1~10nF. A larger capacitor improves the AC ripple rejection, but also makes the
output come up slowly. This “soft” turn-on is desirable in some applications to limit turn-on surges.
All capacitors should be placed in close proximity to the pins. A “quiet” ground termination is desirable.
3/6
Version: A07
TS9001 Series
300mA CMOS LDO with Enable
Application Examples
Standard Circuit
Typical Application Circuit 1
Typical Application Circuit 2
4/6
Version: A07
TS9001 Series
300mA CMOS LDO with Enable
SOT-25 Mechanical Drawing
DIM
A+A1
B
C
D
E
E
H
L
Ө1
S1
SOT-25 DIMENSION
MILLIMETERS
INCHES
MIN
MAX
MIN
MAX.
0.09
1.25
0.0354
0.0492
0.30
0.50
0.0118
0.0197
0.09
0.25
0.0035
0.0098
2.70
3.10
0.1063
0.1220
1.40
1.80
0.0551
0.0709
1.90 BSC
0.0748 BSC
2.40
3.00
0.09449
0.1181
0.35 BSC
0.0138 BSC
0º
10º
0º
10º
0.95 BSC
0.0374 BSC
5/6
Version: A07
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