TS9004
300mA CMOS LDO Adjustable Voltage with Enable & Power Good
Pin assignment
1. Input
6. Output
2. Ground 5. Feedback
3. Enable 4. Power Good
Low Drop Out Voltage 0.4V
Adjustable Voltage
Enable Shutdown
Power Good
General Description
The TS9004 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
TS9004 is included a precision voltage reference, current fold-back, error correction circuit, a current limited output driver,
over temperature shutdown, and a “Power Good” detector, which pulls low when the output is out of regulation.
This series are offered in 6-pin SOT-26 package.
Features
Dropout voltage typically 0.4V@Io=300mA (Vo>2.5V)
Low power consumption: 30uA (typ.)
Output voltage +/-2.5%
Internal current limit and thermal shutdown
Short circuit current fold-back
Power saving shutdown mode
Power good output function
Adjustable output vlotage
Applications
Palmtops
Video recorders
Battery powered equipment
PC peripherals
High-efficiency linear power supplies
Digital signal camera
Typical Application Circuit
Ordering Information
Part No.
Operating Temp.
(Ambient)
-40 ~ +85
o
C
Package
SOT-26
TS9004
TS9004CX6
Block Diagram
TS9004
1-1
2003/12 rev. B
Absolute Maximum Rating
Input Supply Voltage
Enable Input Voltage
Output Current
Power Dissipation
Thermal Resistance
Operating Ambient Temperature Range
Operating Junction Temperature Range
Storage Temperature Range
Lead Soldering Temperature (260
o
C)
ESD Classification
HBM
Vin
Vce
Io
P
D
Өja
Ta
Tj
T
STG
+7
Gnd-0.3 ~ Vin+0.3
Pd / (Vin – Vout)
Internal Limited (note)
260
-40 ~ +85
-40 ~ +125
-65 ~ +150
10
2k
o
V
V
C/W
o
o
o
C
C
C
S
V
Caution:
Stress above the listed absolute rating may cause permanent damage to the device
.
Note:
Pd(max) = [Tj(max) – Ta] /
Өja,
where
Өja
depends on the printed circuit layout
Electrical Characteristics
(Ta = 25
o
C, Vin= Vin(min), Vce≥2V, unless otherwise specified.)
Parameter
Input Voltage
Bandgap Reference
Vout Temperature Coefficient
Maximum Output Current
Output Current Limit
Short Circuit Current (note 3)
Line Regulation
Load Regulation
Dropout Voltage
Vin=Vo+1V,
Vout=0V
Vout< 0.8V
Vo+1V
≤Vin≤
Vo+2V,
Io= 1mA
1mA≤I
L
≤300mA
Io=300mA,
Vout=Vo - 2%
Quiescent Current
Quiescent Current
Ground Pin Current
Power Supply Rejection Ratio
Over Temperature Shutdown
Output Noise
Enable Input
Enable Input Logic-High Voltage
Enable Input Logic-Low Voltage
Enable Input Current
Vin= 2.7V to 7V
Vin= 2.7V to 7V
Ven≤ 0.4V
Ven= Vin
--
0
--
--
Vin/2+0.8V
Vin/2-0.8V
--
--
Vin
--
3
0.1
V
V
uA
Io=10mA, f=10Hz~100kHz, Co=2.2uF
Vin≤0.4V (shutdown)
Vout
≥
0.4V, Io=0mA
Io= 1mA ~ 300mA
Io=100mA,
At f=1kHz,
At f=10kHz,
Vout
≥
2.0V
Vout<2.0V
Vout
≥
2.0V
Vout<2.0V
Voo= VBG, Io= 10mA
Conditions
Min
Note 1
0.99|Vo|
--
300
--
--
--
--
--
--
--
--
--
--
--
--
--
--
Typ
--
1.176
25
--
800
150
--
--
0.2
300
800
2
30
30
60
50
150
30
Max
7
1.01|Vo|
--
--
--
--
0.3
0.1
1.0
400
1300
--
35
35
--
--
--
--
Unit
V
V
ppm/
o
C
mA
mA
mA
%
%
mV
uA
uA
uA
dB
o
C
uVrms
TS9004
2-2
2003/12 rev. B
Electrical Characteristics
(Ta = 25
o
C, Vin= Vin(min), Vce≥2V, unless otherwise specified.)
Power Good
PG Low Threshold
PG High Threshold
PG leakage current
PG voltage rating
PG voltage low
Delay Time to PG (note 2)
% of Vo (PG ON)
% of Vo (PG OFF)
V
PG
= 7V
Vo in regulation
Isink = 0.4mA
Vin= 5V
Vin= 3V
89.5
--
--
--
--
--
--
--
--
--
--
--
8
4
85
96.5
1
7
0.4
--
--
uA
V
V
mS
%
Note 1: Vin(min) = Vout + Vdropout
Note 2: Guaranteed by design, not 100% tested.
Note 3: Short circuit current and current limit value will be increased as input voltage is larger than Vin(min)
Detail Description
Description
The TS9004 series of CMOS regulators contain a P-MOS pass transistor, voltage reference, error amplifier, over
current protection, thermal shutdown and power good function.
The TS9004 series switches from voltage mode to current mode when the load exceeds the rated output current. This
prevents over stress. The TS9004 also incorporates current fold-back to reduce power dissipation when the output is
short circuit. This feature becomes active when the output drops below 0.8V, and reduces the current flow by 65%.
Full current is restored when the voltage exceeds 0.8V.
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 1uA. This pin behaves much like an
electronic switch.
External Capacitor
The TS9004 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. All capacitors should be placed in close
proximity to the pins. A “quiet” ground termination is desirable.
Power Good
The TS9002 includes the Power Good feature. When the output is not within = +/-15% of the specified voltage, it pulls
low. This can occur on other condition:
–
–
–
Input voltage too low
Temperature during over
Current during over
TS9004
3-3
2003/12 rev. B
Typical Electrical Characteristics
TS9004
4-4
2003/12 rev. B
SOT-26 Mechanical Drawing
DIM
A
B
C
D
E
F
H
L
SOT-26 DIMENSION
MILLIMETERS
INCHES
MIN
MAX
MIN
MAX
2.70
3.00
0.106
0.118
0.25
0.50
0.010
0.020
1.90(typ)
0.075(typ)
0.95(typ)
0.037(typ)
1.50
1.70
0.059
0.067
1.05
1.35
0.041
0.053
2.60
3.00
0.102
0.118
0.60(typ)
0.024(typ)
TS9004
5-5
2003/12 rev. B
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