TS9009SCX5 [TSC]
80mA CMOS Low Dropout Voltage Regulator with Enable; 80毫安CMOS低压差稳压器与启用型号: | TS9009SCX5 |
厂家: | TAIWAN SEMICONDUCTOR COMPANY, LTD |
描述: | 80mA CMOS Low Dropout Voltage Regulator with Enable |
文件: | 总5页 (文件大小:106K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
TS9009
80mA CMOS Low Dropout Voltage Regulator with Enable
Pin assignment
1. Input
Low Power Consumption
2. Ground
3. Enable
4. N/C
Low Drop Out Voltage 0.4V
Enable Shutdown
5. Output
General Description
The TS9009 series is combine high accuracy with very low power consumption (225uA at 20mA output), and very low
dropout voltage (from typically 20mV at light loads to 300mV at 80mA).
The TS9009 series is designed for optimal performance with low-value, low cost ceramic capacitors. In most applications
only 0.47uF of output capacitance is required for stability, and specifically for battery power devices. The Chip Enable
(CE) includes a CMOS or TTL compatible input allows the output to be turned off to prolong battery life. When it is
shutdown, power consumption drops practically to zero. If Chip Enable control is not required, the Enable pin can be tied
to the input for 3-terminal operation. The TS9009 series is included a precision voltage reference, current limiting, over
temperature shutdown, and protection against reversed battery connection.
This series are offered in 5-pin SOT-25 package.
Features
Ordering Information
Output current up to 80mA
Part No.
Operating Temp.
Package
Low power consumption
(Ambient)
-40 ~ +85 oC
Output voltage +/-2%
TS9009xCX5
SOT-25
Internal current and thermal limiting
Reversed input polarity protection
Zero Off-mode current
Note: Where x denotes voltage option, available are
N=2.8V,
P=3.0V,
S=3.3V,
Logic controlled shutdown
5=5.0V.
Applications
Contact factory for additional voltage options.
Notebook, Palmtops and PDA
Bar code scanners
Typical Application Circuit
Battery powered equipment
High efficiency linear power supplies
DC to DC modules
Block Diagram
TS9009 series
1-5
2003/12 rev. B
Absolute Maximum Rating (Note 1)
Input Supply Voltage
Vin
Vce
Io
+20
+20
V
V
Enable Input Voltage
Output Current
80
mA
mW
oC/W
oC
Power Dissipation (Note 3)
Thermal Resistance
PD
380
Өja
Tj
260
Operating Junction Temperature Range
Storage Temperature Range
Lead Soldering Temperature (260 oC)
-40 ~ +125
-65 ~ +150
5
TSTG
oC
S
Recommend Operating Rating
Input Supply Voltage
Enable Input Voltage
Vin
+16
V
V
Vce
Gnd-0.3 ~ Vin+0.3
Electrical Characteristics
Ta = 25 oC, Io=1mA, Cout=0.47uF, Vce≥2V, unless otherwise specified.
Parameter Conditions
Output Voltage Vin=Vo + 1V
Min
Typ
Max
1.02|Vo|
1.03|Vo|
--
Unit
0.98|Vo|
0.97|Vo|
--
V
1mA≤IL≤80mA
V
Output Voltage Temperature
Coefficient (Note 4)
50
ppm/ oC
Line Regulation
Vo+1V ≤ Vin ≤ 16V
--
0.08
0.2
0.3
0.5
--
%/V
%/V
Load Regulation (Note 5)
Dropout Voltage (Note 6)
Vin=Vo+1V, 1mA≤IL≤80mA
Vce≥2V
Io=100uA
--
--
--
--
--
--
--
--
--
--
--
--
20
mV
Io=20mA
Io=50mA
Io=80mA
200
250
300
0.01
180
225
850
1800
180
70
--
--
--
Quiescent Current
Vin≤0.4V (shutdown)
1
uA
uA
Ground Pin Current (Note 7)
Vce≥2V
Io=0.1mA
--
Io=20mA
Io=50mA
Io=80mA
750
--
3000
--
Output Current Limit
Vout=0V
mA
dB
Power Supply Rejection Ratio
Thermal Regulation (Note 8)
Enable Input
At f=100Hz, Io=0.1mA,
--
0.05
--
%/W
Enable Input Logic-Low Voltage
Enable Input Logic-High Voltage
Enable Input Current
Regulation shutdown
Regulation enable
VIL≤0.6V
--
2.0
--
--
--
0.6
--
V
V
0.01
15
1
uA
VIL≥2.0V
--
50
TS9009 series
2-5
2003/12 rev. B
Electrical Characteristics
Note 1: Exceeding the absolute maximum rating may damage the device.
Note 2: The device is not guaranteed to function outside its operating rating.
Note 3: The maximum allowable power dissipation at any Ta is Pd(max) = [ Tj(max) - Ta] * Өja. Exceeding the
maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into
thermal shutdown.
Note 4: Output voltage temperature coefficient is defined as the worst case voltage change divided by the total
temperature range.
Note 5: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for
load regulation in the load range from 1mA to 80mA. Changes in output voltage due to heating effects are
covered by the thermal regulation specification.
Note 6: 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 7: Ground pin current is the regulator quiescent current plus pass transistor base current. The total current drawn
from the supply is the sum of the load current plus the ground pin current.
Note 8: 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. Specifications are for a 80mA load pulse at Vin=16V for
t=10mS.
Applications Information
Input Capacitor
Place an 0.1uF capacitor from Vin to Gnd in applications where there is more than 10 inches of wire between the input
and the AC filter capacitor, or where a battery is used as the input.
Output Capacitor
As with any PNP-based regulator, the TS9009 requires an output capacitor to prevent oscillation. However, the TS9009
is extremely stable, and requires only 0.47uF of output capacitance for stability. It can be used with any type of
capacitor, but it works great with cheap, tiny ceramic capacitors, it also can be increased the output capacitor value
without limit to improve transient response.
Caveat: used a capacitor with a resonant frequency above 500KHz. Ceramic capacitors work great, but some
dielectrics have poor temperature coefficients, which affect the capacitance value over temperature. Tantalum
capacitors are very stable over temperature, but are larger and much more expensive. Aluminum electrolytic capacitors
also work, but they have electrolytes which freeze at –30 oC. So, used tantalum or ceramic capacitors for operation
below -25 oC.
No Load Stability
Unlike most regulators, the TS9009 will remain stable and in regulation with no load other than the internal voltage
divider. The makes TS9009 ideal for CMOS RAM keep alive applications.
Enable Input
The Ts9009 have practically zero off-mode current. When the chip enable input (CE) is held below 0.6V, the TS9009 is
powered off. Pulling CE high over 2V will be turned on the regulation. When the CE is held low, the regulator typically
draws only 15nA of current. While the logic threshold is TTL/CMOS compatible, CE may be pulled as high as 20V,
independent to Vin.
TS9009 series
3-5
2003/12 rev. B
Application Examples
Standard Circuit
Typical Application Circuit 1
Typical Application Circuit 2
TS9009 series
4-5
2003/12 rev. B
SOT-25 Mechanical Drawing
SOT-23 DIMENSION
MILLIMETERS
INCHES
DIM
MIN
2.70
0.25
MAX
3.00
0.50
MIN
MAX
0.118
0.020
A
B
C
D
E
F
H
L
0.106
0.010
1.90(typ)
0.95(typ)
1.50
0.075(typ)
0.037(typ)
1.70
1.35
3.00
0.059
0.067
0.053
0.118
1.05
2.60
0.041
0.102
0.60(typ)
0.024(typ)
TS9009 series
5-5
2003/12 rev. B
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