Richtek RT9166-12GVL, RT9166-12PVL, RT9166-12PX, RT9166-12PXL, RT9166-13GVL Schematic [ru]

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RT9166/A

300/600mA, Ultra-Fast Transient Response LDO Regulator

General Description

The RT9166/A series are CMOS low dropout regulators

optimized for ultra-fast transient response. The devices

are capable of supplying 300mA or 600mA of output current

with a dropout voltage of 230mV or 580mV respectively.

The RT9166/A series are is optimized for CD/DVD-ROM,

CD/RW or wireless communication supply applications.

The RT9166/A regulators are stable with output capacitors

as low as 1μF. The other features include ultra low dropout

voltage, high output accuracy, current limiting protection,

and high ripple rejection ratio.

The devices are available in fixed output voltages range of

1.2V to 4.5V with 0.1V per step. The RT9166/A regulators

are available in 3-lead SOT-23 (RT9166 only), SOT-89,

SOT-223, TO-92 and TO-252 packages.

Ordering Information

RT9166/A-

Package Type VL : SOT-23-3 (L-Type) (RT9166 Only) X : SOT-89 XL : SOT-89 (L-Type) G : SOT-223 GL : SOT-223 (L-Type) Z : TO-92 L : TO-252

Lead Plating System P : Pb Free G : Green (Halogen Free and Pb Free)

Output Voltage 12 : 1.2V 13 : 1.3V : 45 : 4.5V 1B : 1.25V

600mA Output Current 300mA Output Current

Note :

Richtek products are :

` RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

` Suitable for use in SnPb or Pb-free soldering processes.

Features

Low Quiescent Current (Typically 220

z Guaranteed 300/600mA Output Current

z Low Dropout Voltage : 230/580mV at 300/600mA

z Wide Operating Voltage Ranges : 3V to 5.5V

z Ultra-Fast T ran sient Response

z Tight Load and Line Regulation

z Current Limiting Protection

z Thermal Shutdown Protection

z Only Low-ESR Ceramic Capacitor Required for

Stability

z Custom Voltage Available

z RoHS Compliant and 100% Lead (Pb)-Free

μμ

μA)

μμ

Applications

z CD/DVD-ROM, CD/RW

z Wireless LAN Card/Keyboard/Mouse

z Battery-Powered Equipment

z XDSL Router

z PCMCIA Card

Marking Information

For marking information, contact our sales representative

directly or through a Richtek distributor located in your

area.

Pin Configurations

(TOP VIEW)

VIN

GND

SOT-23-3 (L-Type) (RT9166)

VOUT

GND

VIN

TO-92

DS9166/A-23 June 2012 www.richtek.com

RT9166/A

123

VOUT

GND

VIN

(TAB)

123

GND

VIN

VOUT

(TAB)

GND

(TAB)

VINVOUT

GND VIN

(TAB)

VOUT

SOT-223SOT-89 (L-Type) TO-252SOT-223 (L-Type)SOT-89

Typical Application Circuit

RT9166/A

Note: To prevent oscillation, a 1

1uF

μμ

μF minimum X7R or X5R dielectric is strongly recommended if ceramics are

μμ

VIN

GND

VOUT

OUT

1uF

OUT

used as input/output capacitors. When using the Y5V dielectric, the minimum value of the input/output capacitance that can be used for stable over full operating temperature range is 3.3

μμ

μF. (see Application

μμ

Information Section for further details)

Functional Pin Description

231

GND

VIN

Pi n N a m e P in Func t ion

VIN Supply Input.

VOUT Regulator Output.

GND Common Ground.

Function Block Diagram

VIN

Current

Limiting

Sensor

Thermal

Shutdown

Error

Amplifier

1.2V

Reference

VOUT

GND

DS9166/A-23 June 2012www.richtek.com

RT9166/A

Absolute Maximum Ratings (Note 1)

z Supply Input Voltage ------------------------------------------------------------------------------------------------- 6.5V

z Power Dissipation, P

SOT-23-3 --------------------------------------------------------------------------------------------------------------- 0.4W

SOT-89 ------------------------------------------------------------------------------------------------------------------ 0.571W

SOT-223 ---------------------------------------------------------------------------------------------------------------- 0.740W

TO-252 ------------------------------------------------------------------------------------------------------------------ 1.470W

z Package Thermal Resistance (Note 2)

SOT-23-3, θJA---------------------------------------------------------------------------------------------------------- 250°C/W

SOT-89, θJA------------------------------------------------------------------------------------------------------------ 175°C/W

SOT-89, θJC------------------------------------------------------------------------------------------------------------ 58°C/W

SOT-223, θJA----------------------------------------------------------------------------------------------------------- 135°C/W

SOT-223, θJC---------------------------------------------------------------------------------------------------------- 15°C/W

TO-252, θJA------------------------------------------------------------------------------------------------------------ 68°C/W

TO-252, θJC------------------------------------------------------------------------------------------------------------ 7°C/W

z Lead Temperature (Soldering, 10 sec.)-------------------------------------------------------------------------- 260°C

z Junction Temperature ------------------------------------------------------------------------------------------------ 150°C

z Storage Temperature Range --------------------------------------------------------------------------------------- −65°C to 150°C

z ESD Susceptibility (Note 3)

HBM (Human Body Model)----------------------------------------------------------------------------------------- 2kV

@ TA = 25°C

Recommended Operating Conditions (Note 4)

z Supply Input Voltage ------------------------------------------------------------------------------------------------- 2.8V to 5.5V

z Junction Temperature Range --------------------------------------------------------------------------------------- − 40°C to 125°C z Ambient Temperature Range --------------------------------------------------------------------------------------- −40°C to 85°C

Electrical Characteristics

(VIN = V

+ 1V or V

OUT

= 2.8V whichever is greater, CIN = 1μF, C

OUT

= 1μF, T

Parameter Symbol Test Conditions Min Typ Max Unit

Output Voltage Accuracy ΔV

OUT

= 1mA −1 -- 3 %

RT9166 300 -- --

Current Limit

RT9166A

Quiescent Current (Note 5) IQ I

Dropout Voltage (Note 6)

RT9166 I

RT9166A

Line Regulation ΔV

Load Regulation (Note 7)

RT9166 1mA < I

RT9166A

Power Supply Rejection Rate PSRR f = 1kHz, C

LIM

DROP

LINE

ΔV

LOAD

= 1Ω

LOAD

= 0mA -- 220 300 μA

OUT

= 300mA -- 230 --

OUT

= 600mA -- 580 --

OUT

= (V

= 1mA

OUT

1mA < I

+ 0.3V) to 5.5V,

OUT

< 300mA -- 15 35

OUT

< 600mA -- 30 55

OUT

Thermal Shutdown Temperature TSD -- 170 -- °C

= 25°C, unless otherwise specified)

600 -- --

-- 0.2 -- %/V

= 1μF -- −55 -- dB

Thermal Shutdown Hysteresis ΔTSD -- 40 -- °C

DS9166/A-23 June 2012 www.richtek.com

RT9166/A

Note 1. Stresses beyond those listed “Absolute Maximum Ratings” may cause permanent damage to the device. These are

stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in

the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may

affect device reliability.

Note 2. θ

is measured at T

Note 3. Devices are ESD sensitive. Handling precaution is recommended. Note 4. The device is not guaranteed to function outside its operating conditions. Note 5. Quiescent, or ground current, is the difference between input and output currents. It is defined by I

no load condition (I

pin current.

Note 6.The dropout voltage is defined as V Note 7. Regulation is measured at constant junction temperature by using a 20ms current pulse. Devices are tested for load

regulation in the load range from 1mA to 300mA and 600mA respectively.

= 25°C on a low effective thermal conductivity single-layer test board per JEDEC 51-3.

= IIN - I

= 0mA). The total current drawn from the supply is the sum of the load current plus the ground

OUT

− V

, which is measured when V

OUT

is V

OUT(NORMAL)

− 100mV.

OUT

under

DS9166/A-23 June 2012www.richtek.com

Typical Operating Characteristics

RT9166/A

Dropout Voltage vs. Loa d Current

700

CIN = 1uF C

= 1uF

600

500

400

300

200

OUT

Dropout Voltage (mV)

100

0 100 200 300 400 500 600

Region of Stable C

100.00

10.00

1.00

ESR (Ω)

0.10

OUT

0.01

= 25°C

Load Current (mA)

ESR vs. Load Current

OUT

Instable

Stable

Instable

TJ = 125°C

TJ = −40°C

= 1uF to 4.7uF

Powe r Supply Rejection Ratio

= 5V

CIN = 1uF

-10

= 1uF

OUT

-20

-30

PSRR (dB)

100mA

-40

1mA

-50

-60

10 100 1k 10k 100k 1M

Frequency (Hz)

Output Noise

LOAD

OUT

Output Noise Signal (μV)

400

200

-200

-400

= 5V

CIN = 1uF

= 100mA

= 1uF

f = 10Hz to 100KHz

0.00 0 100 200 300 400 500 600

Time (1ms/DIV)

Load Current (mA)

Current Limit vs. Input v oltage

900

850

800

Current Limit (mA)

750

= 5V

CIN = 1uF C

= 1uF

OUT

RL = 0.5Ω

700

33.544.555.5

RT9166-33xX

Input voltage (V)

900

850

800

Current Limit (mA)

750

700

Current Limit vs. Input voltage

= 5V

CIN = 1uF C

= 1uF

OUT

RL = 0.5Ω

3 3.5 4 4.5 5 5.5

Input voltage (V)

RT9166-33xVL

DS9166/A-23 June 2012 www.richtek.com

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