APE8903MP-25 - Advanced Power Electronics Corp. USA

200810213

APE8903

3A Low Dropout Regulator with Enable

FEATURES

 Adjustable Output Low to 0.8V

 Input Voltage as Low as 1.4V and VPP Voltage

 600mV Dropout @ 3A, VO 1.2V

 Over Current and Over Temperature Protection

 Enable Pin

 Low Reverse Leakage (Output to Input )

 ESOP-8 (MP) Packages with Exposed Pad

 ±2% Output Voltage

 VO Power OK Signal

 1.2V, 1.5V, 1.8V and 2.5V and Adjustable

Output Voltage

 VO Pull Low Resistance when Disable

APPLICATIONS

 Motherboards

 Peripheral Cards

 Network Cards

 Set Top Boxes

 Notebook Computers

DESCRIPTION

The APE8903 is a high performance positive voltage

regulator designed for use in applications requiring

very low Input voltage and very low dropout voltage at

up to 3 amps. It operates with a VIN as low as 1.4V and

VPP voltage 5V with output voltage programmable as

low as 0.8V. The APE8903 features ultra low dropout,

ideal for applications where VOUT is very close to VIN.

Additionally, the APE8903 has an enable pin to further

reduce power dissipation while shutdown. The APE8903

provides excellent regulation over variations in line,

load and temperature. The APE8903 provides a power

OK signal to indicate if the voltage level of VO reaches

92% of its rating value.

The APE8903 is available in the exposed SOP-8 (MP)

package. It is available with 1.2V, 1.5V, 1.8V and 2.5V in-

ternally preset outputs that are also adjustable using

external resistors.

ORDERING INFORMATION

PIN CONFIGURATION TYPICAL APPLICATION CIRCUIT

VIN

VEN

VIN

ADJ

GND

0.8 (R1+R2)

VO = R2 Volts

10µFC2

10µF

R2<120kΩis recomm end ed

VPPVPP (5V) POK VOUT

10kΩ

CPP

1µF

VIN

VEN

VIN

ADJ

GND

APE8903

0.8 (R1+R2)

VO = R2 Volts

10µFC2

10µF

R2<120kΩis recomm end ed

VPPVPP (5V)

APE8903POK 10kΩ

CPP

1µF

Advanced Power

Electronics Corp.

APE8903MP 8903MP -40 °C~+85°C

APE8903MP-12 8903MP-12 -40 °C~+85°C

APE8903MP-15 8903MP-15 -40 °C~+85°C

APE8903MP-18 8903MP-18 -40 °C~+85°C

ESOP-8

(with exposed pad)

APE8903MP-25 8903MP-25 -40 °C~+85°C

RoHS Compliant

ORDER NUMBER MARKING TEMP. RANGE PACKAGE

VEN

VPP

POK

VIN

GND

ADJ/NC

ESOP-8 (MP)

(Top View)

APE8903

PIN DESCRIPTION

PIN NAME FUNCTION

1 POK Assert high once VO reaches 92% of its rating voltage. Open-drain output.

2 VEN Enable Input. Pulling this pin below 0.4V turns the regulator off, reducing the quiescent current to a frac-

tion of its operating value. The device will be enabled if this pin is left open.

3 VIN Input voltage. Large bulk capacitance should be placed closely to this pin. A 10µF ceramic capacitor is

recommended at this pin.

4 VPP Input voltage for controlling circuit.

5 NC Not connected.

6 VO The power output of the device. A pull low resistance exists when deactivate device by VEN.

7 ADJ/NC This pin, when it sets the output voltage by the internal feedback resistors, is NC pin.

If external feedback resistors are used, the output voltage will be

VO = 0.8(R1+R2)/R2 Volts.

8 GND Reference ground.

DEFINITIONS

Dropout Voltage

The input/output Voltage differential at which the regu-

lator output no longer maintains regulation against fur-

ther reductions in input voltage. Measured when the

output drops 2% below its nominal value, dropout volt-

age is affected by junction temperature, load current

and minimum input supply requirements.

Line Regulation

The change in output voltage for a change in input

voltage. The measurement is made under conditions of

low dissipation or by using pulse techniques such that

average chip temperature is not significantly affected.

Load Regulation

The change in output voltage for a change in load cur-

rent at constant chip temperature. The measurement is

made under conditions of low dissipation or by using

pulse techniques such that average chip temperature is

not significantly affected.

Maximum Power Dissipation

The maximum total device dissipation for which the

regulator will operate within specifications.

Quiescent Bias Current

Current which is used to operate the regulator chip and

is not delivered to the load.

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Electronics Corp.

BLOCK DIAGRAM

Layout Consideration

The output capacitors must be located as close to the

VOUT terminal of the device as possible. It is recommended

to use a section of a layer of the PC board as a plane to

connect the VOUT pin to the output capacitors to prevent

any high frequency oscillation that may result due to

excessive trace inductance.

Sense Select

APE8903

ABSOLUTE MAXIMUM RATINGS (Note 1)

VPP, VIN, Input Voltage. . . . . . . . . . . . . . . . . . . . . . . 6.5V

Power Dissipation Internally Limited (Note 2)

Maximum Junction Temperature. . . . . . . . . . . . . 150°C

Storage Temperature Range. . . . . . -65°C ≤TJ ≤ +150°C

Thermal Resistance Junction to Ambient, (θJA)

ESOP-8 (MP). . . . . . . . . . . . . . . . . . . . .150°C/W

Thermal Resistance Junction to Case, (θJC)

ESOP-8 (MP) . . . . . . . . . . . . . . . . . . . . . . . . . . . .15°C/W

ESD Rating (Human Body Model) . . . . . . . . . . . . 2kV

OPERATION CONDITIONS

VIN Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . 1.4V ~5.5V

VPP Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . 4.5V~ 5.5V

Temperature Range. . . . . . . . . . . . -40°C ≤TA ≤ +85°C

ELECTRICAL CHARACTERISTICS

VPP=5V, VIN =2.5V, VEN=VPP, IO=10mA, CIN=10 µF, COUT =10µF, TA=TJ=25 °C unless otherwise specified. (Note 3)

PARAMETER SYMBOL CONDITION MIN TYP MAX UNIT

VIN

Input Voltage Range VIN 1.4 --- 5.5 V

Quiescent Current (Ground Current) IQ VO=1.8V, IO=0mA --- 100 300 uA

VPP

VPP Voltage Range VPP 4.5 --- 5.5 V

IPPH V

O=1.8V, IO=0mA --- 0.23 0.5 mA

VPP Current

IPPL V

EN=0V --- --- 1 µA

Output Voltage (Internal Fixed Voltage) VO V

IN=VO+0.5V,VO=1.8V 1.764 1.8 1.836 V

Line Regulation VIN=(VO+0.5V) to 5V --- 0.2 1 %

Load Regulation 10mA<IO<3A --- 0.61 %

Dropout Voltage VD IO=3A --- --- 600 mV

Short Circuit Current --- 4 --- A

VO Pull Low Resistance VEN=0V --- 90 ---

ADJ

Reference Voltage VREF V

ADJ=VO 0.788 0.8 0.812 V

Adjust Pin Current IADJ --- 20 100 nA

VEN

VEN Pin Voltage High VENH 1.6 --- --- V

VEN Pin Voltage Low VENL --- --- 0.4 V

VEN Pin Bias Current IENH V

EN=0V --- 12 20 µA

POK

VO Power OK Voltage VTHPOK --- 92 --- %

Hysteresis VHYPOK --- 7 --- %

Over Temperature Protection

Over Temperature TOT --- 150 --- °C

Over Temperature Hysteresis TOTHY --- 30 --- °C

Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Conditions are

conditions under which the device functions but the specifications might not be guaranteed. For guaranteed specifications

and test conditions see the Electrical Characteristics.

Note 2: The maximum power dissipation is a function of the maximum junction temperature, TJmax ; total thermal resistance,

θJA, and ambient temperature TA. The maximum allowable power dissipation at any ambient temperature is (Tjmax-TA)

θJA. If this dissipation is exceeded, the die temperature will rise above 150°C and IC will go into thermal shutdown.

Note3: Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible.

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Electronics Corp.

Vout Voltage. . . . . . . . . . . . . . . . . . . . . .0.8V~2.7V

VO=1.8V, IO=3A --- 5 6 mA

Vpp

Vin

OUT

Vin

Vpp

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Electronics Corp.

APE8903

POWER SEQUENCE DIAGRAM

POWER ON SEQUENCE

POWER OFF SEQUENCE

APE8903

TYPICAL PERFORMANCES CHARACTERISTICS

(VCC= 3.3V, TA=25°C, unless otherwise noted.)

Advanced Power

Electronics Corp.

Quiescent Current vs. Temperature

0.08

0.082

0.084

0.086

0.088

0.09

0.092

0.094

0.096

0.098

0.1

-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100

Temperature, (℃)

Input Vol tage, VI N

Quiescent Current vs. Input Voltage

0.08

0.082

0.084

0.086

0.088

0.09

0.092

0.094

0.096

0.098

0.1

3 3.5 4 4.5 5 5.5

Input Voltage, VIN (V)

Quiescent Current, I Q（mA）

IPPH Current vs. Temperature

100

125

150

-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100

Temperature ( °C)

IPPH Current (mA)

IPPH Current vs. Input Voltage

100

110

120

3 3.5 4 4.5 5 5.5

Input Voltage (V)

IPPH Current (mA)

Output Voltage vs. Temperature

1.18

1.19

1.2

1.21

1.22

1.23

1.24

-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100

Temperature ( °C)

Output Vol t age (V)

Reference Voltage vs. Input Voltage

0.788

0.792

0.796

0.8

0.804

0.808

0.812

3 3.5 4 4.5 5 5.5

Input Voltage (V)

Reference Voltage (V)

APE8903

TYPICAL PERFORMANCES CHARACTERISTICS (continued)

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Electronics Corp.

Reference Voltage vs. Temperature

0.78

0.785

0.79

0.795

0.8

0.805

0.81

0.815

0.82

-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100

Temperature ( °C)

Reference Voltage (V)

Load Transient Short Circuit Current

Vin Start up Waveform VEn Start up Waveform

APE8903

DEMO BOARD FOOTPRINT

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Electronics Corp.

Package Outline : ESOP-8

Millimeters

SYMBOLS MIN NOM MAX

A 5.80 6.00 6.20

B 4.80 4.90 5.00

C 3.80 3.90 4.00

D 0°4°8°

E 0.40 0.65 0.90

F 0.19 0.22 0.25

M 0.00 0.08 0.15

0.35 0.42 0.49

L 1.35 1.55 1.75

P 2.15 2.25 2.35

Q 2.15 2.25 2.35

1.All Dimension Are In Millimeters.

2.Dimension Does Not Include Mold Protrusions.

Part Marking Information & Packing : ESOP-8

ADVANCED POWER ELECTRONICS CORP.

0.375 REF.

45°

1.27 TYP.

8903MP-&&

YWWSSS

Package Code

Part Numbe

Date Code (YWWSSS)

Y：Last Digit Of The Year

WW：Week

SSS：Sequence

Output Voltage