TSC TS9004CX6

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
Applications
Dropout voltage typically [email protected]=300mA (Vo>2.5V)
Palmtops
Low power consumption: 30uA (typ.)
Video recorders
Output voltage +/-2.5%
Battery powered equipment
Internal current limit and thermal shutdown
PC peripherals
Short circuit current fold-back
High-efficiency linear power supplies
Power saving shutdown mode
Digital signal camera
Power good output function
Adjustable output vlotage
Typical Application Circuit
Ordering Information
Part No.
TS9004
TS9004CX6
Operating Temp.
(Ambient)
-40 ~ +85 oC
Block Diagram
TS9004
1-1
2003/12 rev. B
Package
SOT-26
Absolute Maximum Rating
Input Supply Voltage
Vin
+7
V
Enable Input Voltage
Vce
Gnd-0.3 ~ Vin+0.3
V
Output Current
Io
Pd / (Vin – Vout)
Power Dissipation
PD
Internal Limited (note)
Thermal Resistance
Өja
260
Operating Ambient Temperature Range
Ta
-40 ~ +85
o
C
Tj
-40 ~ +125
o
C
TSTG
-65 ~ +150
o
C
Operating Junction Temperature Range
Storage Temperature Range
Lead Soldering Temperature (260 oC)
ESD Classification
o
C/W
10
S
2k
V
HBM
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 oC, Vin= Vin(min), Vce≥2V, unless otherwise specified.)
Parameter
Conditions
Input Voltage
Bandgap Reference
Voo= VBG, Io= 10mA
Vout Temperature Coefficient
Min
Typ
Max
Unit
Note 1
--
7
V
0.99|Vo|
1.176
1.01|Vo|
V
--
25
--
ppm/ oC
300
--
--
mA
Maximum Output Current
Vin=Vo+1V,
Output Current Limit
Vout=0V
--
800
--
mA
Short Circuit Current (note 3)
Vout< 0.8V
--
150
--
mA
Line Regulation
Vo+1V ≤Vin≤ Vo+2V,
Vout≥2.0V
--
--
0.3
%
Io= 1mA
Vout<2.0V
--
--
0.1
--
0.2
1.0
Load Regulation
1mA≤IL≤300mA
Dropout Voltage
Io=300mA,
Vout≥2.0V
--
300
400
Vout=Vo - 2%
Vout<2.0V
--
800
1300
mV
%
Quiescent Current
Vin≤0.4V (shutdown)
--
2
--
uA
Quiescent Current
Vout≥0.4V, Io=0mA
--
30
35
uA
Ground Pin Current
Io= 1mA ~ 300mA
--
30
35
uA
Power Supply Rejection Ratio
Io=100mA,
At f=1kHz,
--
60
--
dB
At f=10kHz,
--
50
--
--
150
--
--
30
--
Over Temperature Shutdown
Output Noise
Io=10mA, f=10Hz~100kHz, Co=2.2uF
o
C
uVrms
Enable Input
Enable Input Logic-High Voltage
Vin= 2.7V to 7V
--
Vin/2+0.8V
Vin
V
Enable Input Logic-Low Voltage
Vin= 2.7V to 7V
0
Vin/2-0.8V
--
V
Enable Input Current
Ven≤ 0.4V
--
--
3
uA
Ven= Vin
--
--
0.1
TS9004
2-2
2003/12 rev. B
Electrical Characteristics (Ta = 25 oC, Vin= Vin(min), Vce≥2V, unless otherwise specified.)
Power Good
PG Low Threshold
% of Vo (PG ON)
89.5
--
85
PG High Threshold
% of Vo (PG OFF)
--
--
96.5
PG leakage current
VPG = 7V
--
--
1
uA
PG voltage rating
Vo in regulation
--
--
7
V
PG voltage low
Isink = 0.4mA
--
--
0.4
V
Delay Time to PG (note 2)
Vin= 5V
--
8
--
mS
Vin= 3V
--
4
--
%
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
TS9004
5-5
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)
2003/12 rev. B