APU8831Y5 - Advanced Power Electronics Corp. USA

APU8831

200712251

Data and specifications subject to change without notice.

DESCRIPTION

The APU8831 device is an efficient linear voltage regula-

tor with better than 2% initial voltage accuracy, very low

dropout voltage and very low ground current designed

especially for hand held, battery powered applications.

Other features of the device are: TTL compatible enable/

shutdown control input, current limiting and thermal shut-

down.

The APU8831 is available in fixed and adjustable output

voltage versions in a small SOT-23 5-Pin package.

300mA ULTRA LOW DROPOUT REGULATORS

5-PIN SOT-23 Package

Stable with 2.2mF Ceramic Capacitor

2% Voltage Reference Accuracy

Only 270mV Dropout at 300mA

and 170mV Dropout at 150mA

5mA Quiescent Current in Shutdown

Current Limit and Thermal Shutdown

Logic Input Enable Pin

RoHS Compliant

TYPICAL APPLICATION

Figure 1 - Typical application of the APU8831 ajustable voltage regulator.

Technology Licensed from International Rectifier

APPLICATIONS

Laptop, Notebook & Palmtop computers

Battery Powered Equipments

PCMCIA Vcc & Vpp Regulator

Consumer Electronics

High Efficiency Linear Power Supplies

FEATURES

PACKAGE ORDER INFORMATION

TJ (°C) 5-PIN OUTPUT

SOT-23 VOLTAGE

0 To 125 APU8831Y5 Adj

OUT

2.2uF C2

2.2uF

SD Enable

OUT

Adj

Gnd

Vo = 1.253 1+ R1

( )

APU8831

ABSOLUTE MAXIMUM RATINGS

Input Voltage (VIN) ..................................................... 10V

Enable Input Voltage ................................................. 10V

Storage Temperature Range ....................................... -65°C To 150°C

Operating Junction Temperature Range ...................... 0°C To 150°C

PACKAGE INFORMATION

5-PIN SOT-23 (Y5)

ELECTRICAL SPECIFICATIONS

Reference Voltage

(See Table 1 for typical values)

Line Regulation

Load Regulation (Note 1)

Dropout Voltage (Note 2)

Ground Current (Note 3)

Ground Current-SD Activated

Current Limit

Thermal Regulation

Adjust Pin Current

Enable Pin Input LO Voltage

Enable Pin Input HI Voltage

Enable Pin Input LO Current

Enable Pin Input HI Current

uJA=2568C/W

Unless otherwise specified, these specifications apply over CIN=Co=22mF, Io=100mA, VIN(MIN)=2.5V(Adjustable

devices) VIN=Vo + 1V(for fixed voltage devices), VOUT=VFB(for adjustable version only), CBYP=470pF(for fixed voltage devices),

VENB=2V and TA=258C. Typical values refer to TA=258C. Low duty cycle pulse testing is used which keeps junction and

case temperatures equal to the ambient temperature.

VIN

VOUT

Gnd En

Adj

321

4 5

PARAMETER SYM TEST CONDITION MIN TYP MAX UNITS

Vo + 1V<VIN<10V

1mA<Io<100mA

100mA<Io<300mA

Io=100mA

Io=100mA (Note 4)

Io=50mA

Io=50mA (Note 4)

Io=150mA

Io=150mA (Note 4)

Io=300mA

Io=300mA (Note 4)

VEN=2V, Io=100mA

Io=100mA (Note 4)

Io=50mA

Io=50mA (Note 4)

Io=150mA

Io=150mA (Note 4)

Io=300mA

Io=300mA (Note 4)

VEN=0V to 0.8V or Open

Vo=0V

VIN=10V, Io=150mA, 10ms Pulse

VIN=2.5V, Vo=VADJ

Regulator OFF

Regulator ON

VEN(L)=0V to 0.8V

VEN(H)=2V to VIN

-2

320

0.005

0.8

0.1

100

170

204

270

324

120

240

420

540

2200

2900

7200

9300

420

0.05

0.1

0.01

110

140

220

260

350

400

160

600

2900

9500

0.8

%/V

%/W

DVI

DVL

DVI(O)

IQ(SD)

ICL

DVP

IADJ

VEN(L)

VEN(H)

APU8831

PIN # PIN SYMBOL PIN DESCRIPTION

The input pin of the regulator. Typically a large storage capacitor is connected from

this pin to ground to insure that the input voltage does not sag below the minimum

drop out voltage during the load transient response. This pin must always be higher

than VOUT by at least the amount of the dropout voltage and some margin in order for

the device to regulate properly.

Ground pin. This pin must be connected to the lowest potential in the system and all

other pins must be at higher potential with respect to this pin.

Enable pin. A low signal or left open on this pin shuts down the output. This pin must

be tied HI or to VIN for normal operation.

A resistor divider from this pin to the VOUT pin and ground sets the output voltage. To

minimize the error due to the error amplifier, select the values of the resistor dividers

to be less than 10KV.

The output of the regulator. A minimum of 2.2mF with max ESR of 1V capacitor must

be connected from this pin to ground to insure stability.

5-PIN Output

SOT-23 Voltage

APU8831 1.25V

Note 3: Ground current is the regulator quiescent cur-

rent plus the pass transistor current. The total current

from the supply is the sum of the load current plus the

ground pin current.

Note 1: Low duty cycle pulse testing with Kelvin con-

nections is required in order to maintain accurate data.

Note 2: Dropout voltage is defined as the minimum dif-

ferential voltage between VIN and VOUT required to main-

tain regulation at VOUT. It is measured when the output

voltage drops 1% below its nominal value.

PIN DESCRIPTIONS

The output voltage of the adjustable device can be set

using:

Where:

R1 = Resistor connected from output to the Adj pin

R2 = Resistor connected from Adj pin to Gnd

VIN

Gnd

Adj

VOUT

Table 1- Nominal output voltage vs. part number. Vo = 1.253 1+ R1

( )

APU8831

BLOCK DIAGRAM

Figure 2 - APU8831 Adjustable output block diagram.

VIN

THERMAL

SHUTDOWN

1.25V

VOUT

Adj

Gnd

Package Outline : SOT-23-5L

Millimeters

MIN NOM MAX

A 1.00 1.10 1.30

A1 0.00 --- 0.10

A2 0.70 0.80 0.90

b 0.35 0.40 0.50

C 0.10 0.15 0.25

D 2.70 2.90 3.10

E 1.50 1.60 1.80

e --- 1.90(TYP) ---

H 2.60 2.80 3.00

L 0.37 --- ---

θ11°5°9°

e2 --- 0.95(TYP) ---

Note 1：Package Body Sizes Exclude Mold Flash Protrusions or Gate Burrs.

Note 2：Tolerance ± 0.1000 mm(4mil) Unless Otherwise Spe- cified.

Note 3：Coplanarity：0.1000 mm

Note 4：Dimension L Is Measured in Gage plane.

Part Marking Information & Packing : SOT-23 -5L

ADVANCED POWER ELECTRONICS CORP.

SYMBOLS

RGXX

Part Number : RG

Date Code : XX