TS90095CX5 [TSC]

80mA CMOS Low Dropout Voltage Regulator with Enable; 80毫安CMOS低压差稳压器与启用


型号：	TS90095CX5
厂家：	TAIWAN SEMICONDUCTOR COMPANY, LTD
描述：	80mA CMOS Low Dropout Voltage Regulator with Enable 80毫安CMOS低压差稳压器与启用稳压器
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

+20

Enable Input Voltage

Output Current

^oC/W

^oC

Power Dissipation (Note 3)

Thermal Resistance

P_D

380

Өja

260

Operating Junction Temperature Range

Storage Temperature Range

Lead Soldering Temperature (260 ^oC)

-40 ~ +125

-65 ~ +150

T_STG

^oC

Recommend Operating Rating

Input Supply Voltage

Enable Input Voltage

Vin

+16

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|

1mA≤I_L≤80mA

Output Voltage Temperature

Coefficient (Note 4)

ppm/ ^oC

Line Regulation

Vo+1V ≤ Vin ≤ 16V

0.08

0.2

0.3

0.5

%/V

Load Regulation (Note 5)

Dropout Voltage (Note 6)

Vin=Vo+1V, 1mA≤I_L≤80mA

Vce≥2V

Io=100uA

Io=20mA

Io=50mA

Io=80mA

200

250

300

0.01

180

225

850

1800

180

Quiescent Current

Vin≤0.4V (shutdown)

Ground Pin Current (Note 7)

Vce≥2V

Io=0.1mA

Io=20mA

Io=50mA

Io=80mA

750

3000

Output Current Limit

Vout=0V

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

V_IL≤0.6V

2.0

0.6

0.01

V_IL≥2.0V

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

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

TS90095CX5 [TSC]

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