TS TS90071CQ, TS90071CX, TS90071CX5, TS9007ACQ, TS9007ACX Schematic [ru]

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TS9007

300mA Low Noise CMOS LDO

1/8 Version: C07

SOT-25

DFN 2x2

SOT-23

General Description

The TS9007 series is 300mA ultra-low-noise LDO especially designed for battery-power RF and wireless applications. The TS9007 regulator achieves a low 450mV dropout at 300mA load current of 3.3V output, ultra-low

output voltage noise of 15uVrms and PSRR of 57dB at 1KHz. The TS9007 regulators are also optimized to work with low-ESR and low cost ceramic capacitors reducing the amount of board space critical in hand-held devices. The TS9007 requires only 0.47uF output capacitor for stability with and load. The TS9007 consumes less than 1uA in shutdown mode.

Features

● 450mV Dropout at 300mA load (3.3V)

● Low quiescent current: 90µA

● Output voltage ±2%

● Internal current limit and thermal shutdown

● Power saving shutdown mode (<1uA)

● Only need input and output capacitors

● Build-In internal Soft-Start

● Output short-circuit current limit protection

Applications

● Palmtops, PDA and Notebook Computers

● DSC, Handset Camera Modules

● PCMCIA Cards, PC Cameras

● USB Based Portable Devices (MPS, PMP)

● GSM/GPRS/3G RF Transceiver Modules

Ordering Information

Note: Where x denotes voltage option, available are

1= 1.2V A= 1.5V D= 1.8V K= 2.5V M= 2.7V N= 2.8V O= 2.9V P= 3.0V S= 3.3V

Contact factory for additional voltage options.

Part No.

Package

Packing

TS9007xCX RF

SOT-23

3Kpcs / 7” Reel

TS9007xCX5 RF

SOT-25

3Kpcs / 7” Reel

TS9007xCQ RF

DFN 2x2

3Kpcs / 7” Reel

Block Diagram

Typical Application Circuit

EN (Pin 3) may be connected directly to VIN (Pin1) Low noise operation: C

BYP

=30nF, C

OUT

>0.47uF

Basic operation: C

BYP

=not used, C

OUT

>1uF

OUT

0.47uF

BYP

30nF

off

OUT

VIN

Pin Definition:

1. Input

2. Ground

3. Enable

4. Bypass

5. Output

Pin Definition:

1. Input

2. N/C

3. Output

4. N/C

5. Ground

6. Enable

Pin Definition:

1. Ground

2. Output

3. Input

TS9007

300mA Low Noise CMOS LDO

2/8 Version: C07

Absolute Maximum Rating

Parameter

Symbol

Limit

Unit

Supply Voltage

VIN

-0.3 ~ +7

Input Supply Voltage (Recommended)

OPR

+2 ~ +6

Output Short-Circuit Duration

Infinite

Power Dissipation

SOT-25

300

SOT-23

300

DFN 2x2

500

SOT-25

250

SOT-23

300

Thermal Resistance

DFN 2x2

ӨJA

165

°C/W

Junction Temperature Range

+150

°C

Storage Temperature Range

STG

-65 ~ +150

°C

Notes: Stress above the listed absolute rating may cause permanent damage to the device.

Electrical Characteristics (T

= 25oC, VIN = (V

OUT

+1V), CIN=C

OUT

=0.47uF, VEN=VIN, unless otherwise noted.)

Parameter

Conditions

Min

Typ

Max

Unit

Output Voltage

VIN =VO + 1V, IO=10mA

-2.0

Output Current Limit

Short-circuit output

200

Maximum Output Current

VIN =Vo+1V,

300

Line Regulation

VIN =(V

OUT

+1V) to 6V, IO=10mA

0.3

%/V

VIN =Vo+1V, 1mA≤IL≤300mA

OUT

≥2.5V

0.2

1.0

Load Regulation

VIN =Vo+1V, 1mA≤IL≤200mA

OUT

<2.5V

0.2

1.0

Io=300mA, V

OUT

=Vo - 2%

OUT

≥2.5V

500

600

Dropout Voltage

Io=200mA, V

OUT

=Vo - 2%

OUT

<2.5V

800

1000

Shutdown Supply Current

EN=0V

0.01

Ground Pin Current

Io=0mA

150

f=100Hz, Io=1mA

f=1KHz, Io=1mA

Ripple Rejection (PSRR)

f=10Hz, Io=1mA

Io=10mA, f=10Hz to 100kHz, Bypass = 0nF

Output Noise

Io=10mA, f=10Hz to 100kHz, Bypass = 30nF

uVrms

Shutdown Exit Delay (note 2)

LOAD

= 50Ω

300

EN Logic Low Level

VIN =2.0V to 5.5V

0.4

EN Logic High Level

VIN =2.0V to 5.5V

1.5

VIN

EN Input Bias Current

VIN =2.0V to 5.5V

Thermal Shutdown

Shutdown Temperature

160

Thermal Shutdown Hysteresis

Notes: a. The drop out voltage varies depending on output voltage selection.

Dropout is defined as VIN - V

OUT

when V

OUT

is 100mV below V

OUT

where VIN = Vout+1V for nominal V

OUT

b. Time needed for V

OUT

to reach 90% of final value

TS9007

300mA Low Noise CMOS LDO

3/8 Version: C07

Application Information

Enable / Shutdown

The TS9007 comes with and active-high enable pin that allows the regulator to be enabled. Forcing the enable pin low disables the regulator and puts it into the shutdown mode. This pin cannot be left floating as it may cause an undetermined state.

Input / Output Capacitor

It is recommended to use a 0.47uF capacitor on the TS9007 input and a 0.47uF capacitor on the output. For high regulation performance, larger input capacitor values and lower ESRs provide better noise rejection and line-transient response. The output noise, load-transient response, stability, and power-supply rejection can be improved by using large output capacitors. Low ESR ceramic capacitors provide optimal performance and save space.

Power Supply Rejection and Transient Response

The PSRR and transient response can be improved by increasing the values of the input and output bypass capacitors, and through passive filtering techniques

Function Description

Description

The TS9007 is an ultra-low-noise, low-quiescent current, low-dropout linear regulator. It is supplied in a SOT-25 package for difference applications. This device can supply loads up to 300mA. As shown in the functional block diagram, the TS9007 consists of a reference and noise bypass circuit, error amplifier, output drive transistor, internal feedback voltage divider, thermal sensor, and short circuit current limiter. The internal reference is connected to the error amplifier’s inverting input. The error amplifier compares this reference with the feedback voltage and amplifies the difference. If the feedback voltage is lower than the reference voltage, the pass=transistor gate is pulled low. This allows more current to pass to the output and increases the output voltage.

Stability

The TS9007 is a high performance LDO emphasizing stability with low output capacitance. It is able to maintain stability with an output capacitor can also be increased to optimize performance. The TS9007 will remain stable and in regulation with no load, unlike many other voltage regulators.

Internal P-Channel Pass Transistor

The TS9007 features a low impedance P-channel MOSFET pass transistor. This provides several advantages over similar designs using a PNP pass transistor, including low operating power and longer battery life. The TS9007 consumes only 90µA of quiescent current under most conditions.

Output Short-Circuit Current Limit

The TS9007 includes a current limiter, which monitors and controls the pass transistor’s gage voltage, limiting the output current to about 200mA, for example, in a short-circuit output situation.

Shutdown

The TS9007 also features a low-power active shutdown mode. It has a switch that turns off the device when disabled. This allows the output capacitor and load to discharge and de-energize the load. In the shutdown mode, the internal functional blocks, such as voltage reference and the error amplifier, are turned off completely, and the quiescent current is less than 1µA.

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