Richtek RT9016-18PQV, RT9016-18PQW, RT9016-25PB, RT9016-30PB, RT9016-33PB Schematic [ru]

Preliminary

RT9016

500mA Peak, Thermal Folded Back CMOS LDO Regulator

General Description

The RT9016 is designed for portable RF and wireless

applications with demanding performance and space

requirements. The RT9016 performance is optimized for

battery-powered systems to deliver ultra low noise and

low quiescent current. A noise bypass pin is available for

further reduction of output noise. Regulator ground current

increases only slightly in dropout, further prolonging the

battery life. The RT9016 also works with low-ESR ceramic

capacitors, reducing the amount of board space necessary

for power applications, critical in hand-he

ld wireless

devices. The RT9016 consumes less than 0.01μA in

shutdown mode and has fast turn-on time less than 50μs.

RT9016 is short circuit thermal folded back protected.

RT9016 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. The other features include

ultra low dropout voltage, high output accuracy, current

limiting protection, and high ripple rejection ratio. Available

in the SOT-23-5 and WDFN-6L 2x2 packages.

Ordering Information

RT9016-

Package Type
B : SOT-23-5
QW : WDFN-6L 2x2 (W-Type)

Operating Temperature Range
P : Pb Free with Commercial Standard

Output Voltage
15 : 1.5V
16 : 1.6V
:
34 : 3.4V
35 : 3.5V
1H : 1.85V
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

zz

Short Circuit Thermal Folded Back Protection

z

zz

zz

z Ultra-Low-Noise for RF Application

zz

zz

z Ultra-Fast Response in Line/Load Transient

zz

zz

z Quick Start-Up (T ypically 50

zz

μμ

zz

z 0.01

μA Standby Current When Shutdown

zz

μμ

zz

z Low Dropout : 380mV @ 500mA

zz

zz

z Wide Operating Voltage Ranges : 2.5V to 5.5V

zz

zz

z TTL-Logic-Controlled Shutdown Input

zz

zz

z Low Temperature Coefficient

zz

zz

z Current Limiting Protection

zz

zz

z Thermal Shutdown Protection

zz

zz

z Only 1

zz

zz

z High Power Supply Rejection Ratio

zz

zz

z Custom Voltage Available

zz

zz

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

zz

μμ

μF Output Capacitor Required for Stability

μμ

μμ

μs)

μμ

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

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.

Pin Configurations

(TOP VIEW)

VIN

GND

EN

1

2

354

SOT-23-5 WDFN-6L 2x2

VOUT

BP

EN

GND

1

2

3

6

BP

5

NC

4

VOUTVIN

DS9016-00 February 2006 www.richtek.com

1

RT9016

Typical Application Circuit

V

IN

C

IN

1uF

Preliminary

RT9016

VIN

GND

VOUT

C

OUT

1uF

V

OUT

Chip Enable

Functional Pin Description

Pin Name

VIN

GND

EN

BP

VOUT

Pin Function

Input Voltage.

Ground.

Chip Enable (Active High). Note that this pin is high impedance. There should be a pull low 100kΩ

resistor connected to GND when the control signal is floating.

Reference Noise Bypass.

Output Voltage.

Function Block Diagram

EN

Quick

Start

Shutdown

and

Logic Control

EN BP

C

BP

22nF

VIN

BP

V

REF

-

+

Error

Amplifier

MOS Driver

VOUT

Current-Limit

and

Thermal

Protection

GND

DS9016-00 February 2006www.richtek.com

2

Preliminary

RT9016

Absolute Maximum Ratings (Note 1)

z Supply Input Voltage ------------------------------------------------------------------------------------------------------ 6V

z Power Dissipation, P

@ T

D

= 25°C

A

SOT-23-5 -------------------------------------------------------------------------------------------------------------------- 400mW

WDFN-6L 2x2 -------------------------------------------------------------------------------------------------------------- 606mW

z Package Thermal Resistance (Note 4)

SOT-23-5, θJA--------------------------------------------------------------------------------------------------------------- 250°C/W

WDFN-6L 2x2, θJA--------------------------------------------------------------------------------------------------------- 165°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 Junction Temperature Range--------------------------------------------------------------------------------------------

z Ambient Temperature Range --------------------------------------------------------------------------------------------

−40°C to 125°C

−40°C to 85°C

Electrical Characteristics

(VIN = V

+ 1V, CIN = C

OUT

= 1μF, CBP = 22nF, T

OUT

Parameter Symbol Test Conditions Min Typ Max Units

Output Voltage Accuracy ΔV

Current Limit I

Quiescent Current IQ VEN ≥ 1.2V, I

Dropout Voltage (Note 5) V

Line Regulation ΔV

Load Regulation ΔV

Standby Current I

EN Input Bias Current I

Logic-Low Voltage

EN Threshold

Logic-High Voltage

Output Noise Voltage eNO

Power Supply

Rejection Rate

f = 100Hz -- −70 --

f = 10kHz

= 25°C, unless otherwise specified)

A

I

OUT

R

LIM

DROP

LINE

LOAD

VEN = GND, Shutdown -- 0.01 1 μA

STBY

VEN = GND or VIN -- 0 100 nA

IBSD

V

VIN = 3V to 5.5V, Shutdown -- -- 0.4

IL

VIN = 3V to 5.5V, Start-Up 1.2 -- --

V

IH

= 1mA −2 -- +2 %

OUT

= 1Ω 530 -- -- mA

LOAD

I

= 300mA, V

OUT

I

= 500mA, V

OUT

V

= (V

IN

I

OUT

1mA < I

OUT

= 1mA

OUT

10Hz to 100kHz, I

= 1μF

C

OUT

PSRR C

OUT

= 1μF, I

= 0mA -- 90 130 μA

OUT

> 2.8V -- 220 --

OUT

> 2.8V -- 380 --

OUT

+ 0.3V) to 5.5V,

-- -- 0.3 %

mV

< 500mA -- -- 0.6 %

V

= 200mA

OUT

OUT

= 10mA

-- 100 -- μV

-- −50 --

RMS

dB

To be continued

DS9016-00 February 2006 www.richtek.com

3

RT9016

y

Preliminary

Parameter Symbol Test Conditions Min Typ Max Units

Thermal Shutdown Temperature TSD -- 165 -- °C

Thermal Shutdown Temperature

H

steresis

-- 30 -- °C

ΔT

SD

Thermal Folded Back -- 110 -- °C

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

JA

(Single Layer, 1S) of JEDEC 51-3 thermal measurement standard.

-V

IN

, which is measured when V

OUT

OUT

is V

OUT(NORMAL)

− 100mV.

DS9016-00 February 2006www.richtek.com

4