Richtek RT9010-12GJ6, RT9010-12PJ6, RT9010-13GJ6, RT9010-18PJ6, RT9010-25PJ6 Schematic [ru]

...

Download

RT9010

300mA LDO Regulator with POR

General Description

RT9010 is a low noise, and low dropout with the sourcing

ability up to 300mA and power-on reset function. The range

of output voltage is from 1.2V to 3.6V by operating from

2.5V to 5.5V input.

RT9010 offers 2% accuracy, extremely low dropout voltage

(240mV @ 300mA), and extremely low ground current.

The shutdown current is near zero current which is suitable

for battery-power devices. Other features include current

limiting, over temperature, output short circuit protection.

RT9010 is short circuit thermal folded back protected.

RT9010 lowers its OTP trip point from 165°C to 110°C

when output short circuit occurs (V

< 0.4V) providing

OUT

maximum safety to end users.

RT9010 can operate stably with very small ceramic output

capacitors, reducing required board space and component

cost. RT9010 is available in fixed output voltages in the

TSOT-23-6 package.

Ordering Information

RT9010-

Package Type J6 : TSOT-23-6

Operating Temperature Range P : Pb Free with Commercial Standard

Output Voltage 12 : 1.20V 13 : 1.30V : : 35 : 3.50V 36 : 3.60V 1H : 1.85V 2F : 2.65V 2H : 2.85V

Note :

RichTek Pb-free 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.

`100% matte tin (Sn) plating.

Features

Wide Operating Voltage Ranges : 2.5V to 5.5V

z Low-Noise for RF Application

z No Noise Bypass Capa citor Required

z Fast Response in Line/Load Transient

z TTL-Logic-Controlled Shutdown Input

z Low Temperature Coefficient

z 300mA LDO Outputs

z High Accuracy

z Short Circuit Protection

z Thermal Shutdown Protection

z Current Limit Protection

z Short Circuit Thermal Folded Back Protection

z Tiny TSOT-23-6 Package

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

±±

±2%

±±

Applications

z CDMA/GSM Cellular Handsets

z Battery-Powered Equipment

z Laptop, Palmtops, Notebook Computers

z Hand-Held Instruments

z PCMCIA Cards

z Portable Information Appliances

Pin Configurations

(TOP VIEW)

VIN EN SET

VOUT GND

TSOT-23-6

Note : There is no pin1 indicator on top mark for TSOT-23-6

type, and pin 1 will be lower left pin when reading top mark

from left to right.

POR

Marking Information

For marking information, contact our sales representative

directly or through a RichTek distributor located in your

area, otherwise visit our website for detail.

DS9010-00 April 2006 www.richtek.com

RT9010

Typical Application Circuit

100K

1uF

Chip Enable

VIN

RT9010

SET

DELAY

Functional Pin Description

Pin No. Pin Name Pin Fun cti on

1 VOUT Output Voltage.

2 GND Common Ground.

3 POR

4 SET

5 EN Chip Enable (Active High).

Power-On Reset Output : Open-drain output. Active low indicates an output under voltage condition on regulator.

Delay Set Input. Connect external capacitor to GND to set the internal delay.

POR

VOUT

GND

1uF

POR

OUT

6 VIN Supply Input Voltage.

Function Block Diagram

REF

Shutdown

and

Logic Control

Error

Amplifier

VIN

MOS Driver

VOUT

Current Limit

and

Thermal

Protection

GND

POR & DelaySET

DS9010-00 April 2006www.richtek.com

RT9010

Absolute Maximum Ratings (Note 1)

z Supply Input Voltage ------------------------------------------------------------------------------------------------------ −0.3V to 6V

z Other I/O Pin Voltages --------------------------------------------------------------------------------------------------- −0.3V to 6V

z Power Dissipation, P

TSOT-23-6 ------------------------------------------------------------------------------------------------------------------- 0.455W

z Package Thermal Resistance (Note 4)

TSOT-23-6, θJA------------------------------------------------------------------------------------------------------------- 220°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 2)

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

MM (Machine Mode) ------------------------------------------------------------------------------------------------------ 200V

Recommended Operating Conditions (Note 3)

z Supply Input Voltage ------------------------------------------------------------------------------------------------------ 2.5V to 5.5V

z Enable Input Voltage------------------------------------------------------------------------------------------------------ 0V to 5.5V z Junction Temperature Range -------------------------------------------------------------------------------------------- −40°C to 125°C z Ambient Temperature Range -------------------------------------------------------------------------------------------- −40°C to 85°C

@ T

= 25°C

Electrical Characteristics

= V

OUT

+ 1V, V

Parameter Symbol Test Conditions Min Typ Max Units

Input Voltage VIN V

Dropout Voltage (Note 5) V

Output Voltage Range V

Output Voltage Accuracy ΔV

Line Regulation ΔV

Load Regulation ΔV

Current Limit I

Quiescent Current IQ VEN > 1.5V -- 58 80 μA

Shutdown Current I

EN Threshold Voltage

Output Voltage TC -- 100 -- ppm/°C

= VIN, C

Logic-High

Logic-Low V

= C

= 1μF, TA = 25°C, unless otherwise specified.)

OUT

= 2.5V to 5.5V 2.5 -- 5.5 V

DROP

1.2 -- 3.6 V

OUT

LINE

LOAD

LIM

VEN < 0.4V -- -- 1 μA

Q_SD

VIN = 2.5V to 5.5V, Shutdown -- -- 0.4

= 300mA, V

OUT

= 1mA −2 -- +2 %

OUT

= (V

> 2.5V, whichever is larger

1mA < I

LOAD

= 2.5V to 5.5V, Power On 1.5 -- --

+ 0.3V) to 5.5V or

OUT

< 300mA -- -- 0.6 %

OUT

= 1Ω 330 450 700 mA

= 150mA, V

OUT

> 2.8V -- 120 -- mV

OUT

> 2.8V -- 240 -- mV

OUT

-- -- 0.2 %/V

Thermal Shutdown TSD -- 170 -- °C

Thermal Shutdown Hysteresis ΔTSD -- 40 -- °C

To be continued

DS9010-00 April 2006 www.richtek.com

RT9010

Parameter Symbol Test Conditions Min Typ Max Units

PSRR Loading=10mA

PSRR Loading=150mA

PSRR

f =100Hz -- −65 -- dB

f =1kHz -- −60 -- dB

f =10kHz -- −50 -- dB

f =100Hz -- −65 -- dB

f =1kHz -- −50 -- dB

f =10kHz -- −50 -- dB

THL

Low Threshold, % of nominal V (Flag On)

OUT

90 -- -- %

Reset Threshold

High Threshold, % of nominal V (Flag Off)

Flag off −1 0.01 1 μA

POR Output Logic Low Voltage V

POR Leakage Current I

THH

POR_L IL

POR

Set pin current source V

= 250μA -- 0.02 0.1 V

= 0 0.60 1.25 1.70 μA

SET

OUT

-- -- 96 %

Set pin threshold POR = high -- 1.4 -- V

Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for

stress ratings. 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 for extended

periods may remain possibility to affect device reliability.

Note 2. Devices are ESD sensitive. Handling precaution recommended. Note 3. The device is not guaranteed to function outside its operating conditions. Note 4. θ

Note 5. The dropout voltage is defined as V

is measured in the natural convection at TA = 25°C on a low effective thermal conductivity test board of

JEDEC 51-3 thermal measurement standard.

-V

, which is measured when V

OUT

is V

OUT(NORMAL)

− 100mV.

DS9010-00 April 2006www.richtek.com

Typical Operating Characteristics

RT9010

Output Voltage vs. Temperature

1.9

RT9010-18

1.85

1.8

Output Voltage (V)

1.75

1.7

-50 -25 0 25 50 75 100 125

Temperature

(°C)

Quiescent Current vs. Temperature

RT9010-33 VIN = V

CIN = C

Quiescent Current (uA)

= 4.3V

1uF/X7R

OUT

Output Voltage vs. Temperature

3.4

RT9010-33

3.35

3.3

3.25

Output Voltage (V)

3.2

-50 -25 0 25 50 75 100 125

Temperature

(°C)

Dropout Voltage vs. Loa d Current

350

RT9010-33

300

250

200

150

100

TJ = 25°C

Dropout Voltage (mV)

TJ = 125°C

TJ = -40°C

-50 -25 0 25 50 75 100 125

Temperature

(°C)

PSRR

RT9010-15

= 4.3V ± 0.1V

CIN = C

-20

-40

PSRR (dB)

-60

-80

0.01 0.1 1 10k 100k 1000k

10 100 1000 10000 100000 1000000

OUT

1uF/X7R

Frequency (Hz)

(Hz)

LOAD

= 100mA

LOAD

= 50mA

LOAD

= 10mA

0 50 100 150 200 250 300

Load Current (mA)

POR Dela y

10000

RT9010-28

1000

100

POR Delay Time (ms)

0.1

0.01

0.0001 0.0010 0.0100 0.1000 1.0000

0.0001 0.001 0.01 0.1 1

POR Setting Capacitance (uF)

DS9010-00 April 2006 www.richtek.com

RT9010

4.8

(V)

3.8

OUT

(10mV/Div)

4.8

(V)

3.8

Line Transient Response

RT9010-28, Both I V

= 3.8V to 4.8V

= 1mA

LOAD

Time (100μs/Div)

Line Transient Response

RT9010-28, Both I V

= 3.8V to 4.8V

LOAD

= 50mA

4.8

3.8

(V)

OUT

(10mV/Div)

4.8

(V)

3.8

Line Transient Response

RT9010-28, Both I V

= 3.8V to 4.8V

= 10mA

LOAD

Time (100μs/Div)

Line Transient Response

RT9010-28, Both I V

= 3.8V to 4.8V

LOAD

= 100mA

OUT

(10mV/Div)

OUT

(50mA/Div)

OUT

(20mV/Div)

Time (100μs/Div)

Load Transient Response

RT9010-33, I V

= V

CIN = C

OUT

= 10mA to 50mA

LOAD

= 4.3V

= 1uF/X7R

Time (250μs/Div)

OUT

(10mV/Div)

OUT

(100mA/Div)

OUT

(20mV/Div)

Time (100μs/Div)

Load Transient Response

RT9010-33, I V

= V

CIN = C

OUT

= 10mA to 100mA

LOAD

= 4.3V

= 1uF/X7R

Time (250μs/Div)

DS9010-00 April 2006www.richtek.com

RT9010

(5V/Div)

(1V/Div)

(5V/Div)

RT9010-28, V

= 50mA

OUT

RT9010-28 I

= 10mA

LOAD

Start Up

= 5V

Time (5μs/Div)

Power-On

(5V/Div)

(1V/Div)

150

100

EN Pin Shutdown Response

RT9010-28, V

= 50mA

OUT

= 5V

OUT

Time (50μs/Div)

Noise

RT9010-33, No LOAD V

= V

= 4.5V(By battery)

= C

= 1uF/X7R

OUT

(2V/Div)

POR

(5V/Div)

300

200

100

-100

Noise (μV/Div)

-200

-300

RT9010-33, I

= V

= C

Time (10μs/Div)

= 50mA

LOAD

= 4.5V(By battery)

= 1uF/X7R

OUT

Noise

-50

Noise (μV/Div)

-100

-150

Time (10ms/Div)

DS9010-00 April 2006 www.richtek.com

RT9010

Applications Information

Like any low-dropout regulator, the external capacitors used

with the RT9010 must be carefully selected for regulator

stability and performance. Using a capacitor whose value

is > 1μF on the RT9010 input and the amount of

capacitance can be increased without limit. The input

capacitor must be located a distance of not more than 0.5

inch from the input pin of the IC and returned to a clean

analog ground. Any good quality ceramic or tantalum can

be used for this capacitor. The capacitor with larger value

and lower ESR (equivalent series resistance) provides

better PSRR and line-transient response.

The output capacitor must meet both requirements for

minimum amount of capacitance and ESR in all LDOs

application. The RT9010 is designed specifically to work

with low ESR ceramic output capacitor in space-saving

and performance consideration. Using a ceramic capacitor

whose value is at least 1μF with ESR is > 20mΩ on the

RT9010 output ensures stability. The RT9010 still works

well with output capacitor of other types due to the wide

stable ESR range. Figure 1. shows the curves of allowable

ESR range as a function of load current for various output

capacitor values. Output capacitor of larger capacitance

can reduce noise and improve load transient response,

stability, and PSRR. The output capacitor should be located

not more than 0.5 inch from the VOUT pin of the RT9010

and returned to a clean analog ground.

Region of Stable C

100

ESR (Ω)

ESR (Ω)

OUT

Unstable Region

ESR vs. Load Current

OUT

RT9010-28, V C

= 1uF/X7R

= 5V

Thermal Considerations

Thermal protection limits power dissipation in RT9010.

When the operation junction temperature exceeds 170°C,

the OTP circuit starts the thermal shutdown function and

turns the pass element off. The pass element turn on again

after the junction temperature cools by 40°C. RT9010

lowers its OTP trip level from 170°C to 110°C when output

short circuit occurs (V

< 0.4V) as shown in Figure 2. It

OUT

limits IC case temperature under 100°C and provides

maximum safety to customer while output short circuit

occurring.

Short to GND

OUT

0.4V

OUT

TSD

170 C

110 C

OTP Trip Point

IC Temperature

110 C

80 C

Figure 2. Short Circuit Thermal Folded Back Protection

when Output Short Circuit Occurs (Patent)

For continuous operation, do not exceed absolute

maximum operation junction temperature 125°C. The

power dissipation definition in device is :

PD = (V

− V

OUT

) x I

OUT

+ VIN x I

0.1

0.01

Region of Stable C

0.001 0 50 100 150 200 250 300

Figure 1. Stable Cout ESR Range

Stable Region

Simulation Verify Unstable Region

Load Current (mA)

The maximum power dissipation depends on the thermal

resistance of IC package, PCB layout, the rate of

surroundings airflow and temperature difference between

junction to ambient. The maximum power dissipation can

be calculated by following formula :

Where T

D(MAX)

= ( T

J(MAX)

temperature 125°C, T

is the junction to ambient thermal resistance.

− T

) /θ

is the maximum operation junction

is the ambient temperature and the

DS9010-00 April 2006www.richtek.com

For recommended operating conditions specification of

RT9010, where T

is the maximum junction

J(MAX)

temperature of the die (125°C) and TA is the operated

ambient temperature. The junction to ambient thermal

resistance (θJA is layout dependent) for TSOT-23-6 package

is 220°C/W on the standard JEDEC 51-3 single-layer

thermal test board. The maximum power dissipation at

TA = 25°C can be calculated by following formula :

RT9010

= ( 125°C - 25°C) / (220°C/W) = 0.455 W for

D(MAX)

TSOT-23-6 packages

The maximum power dissipation depends on operating

ambient temperature for fixed T

and thermal

J(MAX)

resistance θJA. For RT9010 packages, the Figure 3 of de-

rating curves allows the designer to see the effect of rising

ambient temperature on the maximum power allowed.

0.50

0.45

0.40

0.35

0.30

0.25

0.20

0.15

Power Dissipation (W)

0.10

0.05

0.00 0 25 50 75 100 125

Ambient Temperature

TSOT-23-6

(°C)

Figure 3. Derating Curves for RT9010 Packages

DS9010-00 April 2006 www.richtek.com

RT9010

Outline Dimension

Dimensions In Millimeters Dimensions In Inches

Symbol

Min Max Min Max

A 0.700 1.000 0.028 0.039

A1 0.000 0.100 0.000 0.004

B 1.397 1.803 0.055 0.071

b 0.300 0.559 0.012 0.022

C 2.591 3.000 0.102 0.118

D 2.692 3.099 0.106 0.122

e 0.838 1.041 0.033 0.041

H 0.080 0.254 0.003 0.010

L 0.300 0.610 0.012 0.024

RICHTEK TECHNOLOGY CORP .

Headquarter

5F, No. 20, Taiyuen Street, Chupei City

Hsinchu, Taiwan, R.O.C.

Tel: (8863)5526789 Fax: (8863)5526611

TSOT-23-6 Surface Mount Package

RICHTEK TECHNOLOGY CORP .

Taipei Office (Marketing)

8F-1, No. 137, Lane 235, Paochiao Road, Hsintien City

Taipei County, Taiwan, R.O.C.

Tel: (8862)89191466 Fax: (8862)89191465

Email: marketing@richtek.com

DS9010-00 April 2006www.richtek.com

Richtek RT9010-12GJ6, RT9010-12PJ6, RT9010-13GJ6, RT9010-18PJ6, RT9010-25PJ6 Schematic [ru]

Specifications and Main Features

Frequently Asked Questions

User Manual