BAYLI B033N-2.5, B033N-1.8, B033D-ADJ, B033D-5, B033D-3.3 Datasheet

Bay Linear, Inc

2418 Armstrong Street, Livermore, CA 94550 Tel: [phone], Fax: [phone] www.baylinear.com

1.0Amp Low Dropout Voltage Regulator

B033

Adjustable & Fix (0.40Volt Dropout)

Pin Connection

Ordering Information

Devices Package Temp.

B033D-X TO-252

0 °C to 125 °C

B033N-X TO-223

0 °C to 125 °C

B033T-X TO-220

0 °C to 125 °C

B033S-X TO-263

0 °C to 125 °C

Description

The Bay Linear B033 is a three terminal positive NPN
regulator offered as adjustable or fix voltages of 1.8V, 2.5V,

3.0V, 3.3V, and 5Volts. The output current has a capability up
to

1.0Amp,. This device has been optimized for low voltage

where transient response and minimum input voltage are
critical. The 2.85V version is designed specifically to be used
in active terminators for SCSI bus.

Current limit is trimmed to ensure specified output current and
controlled short-circuit current. On-Chip thermal limiting
provides protection against any combination of overload and
ambient temperatures that would create excessive junction
temperatures.

The B033 is offered in a 3-pin SOT-223, and TO-252 (DPAK)
packages compatible with other 3 terminal regulators. 5-pin

version in TO-263 with lower dropout of 0.4 volt is
available.

Features

• Adjustable Output Down to 1.2V

• Output Current of 1.0Amp

• Low Dropout 1.0V for B033

• Dropout of 0.40 V in for B033A

• Adjustable & Fix 1.8V, 2.5V, 3.0V, 3.3V,

5.0V

• Current & Thermal Limiting

• Lower Cost SOT-89 Package

• Available in SOT-223, and TO-252, &

TO-263

• Similar to industry BAOOT/FP

Applications

• Active SCSI terminators

• High efficiency Linear Regulator

• Post regulators fro Switching Supplies

• Battery Charger

• 5V to 3.3V linear Regulators

• Motherboard Clock Supplies

V

POWER

OUTPUT

1

2

3

4

5

V

CONTROL

ADJ/GND.

SENSE

TO-263-5 Package

V

POWERVPOWER

OUTPUT

1

2

3

4

5

V

CONTROLVCONTROL

ADJ/GND.

SENSE

TO-263-5 Package

Bay Linear

Inspire the Linear Power

Tab V

OUT

SOT-223

Tab V

OUT

Front View

SOT-223 -5

4

1

5

23

#1 Sense
#2 Adj/GND
#3 OUT
#4 Control
#5 V

IN

Tab V

OUT

SOT-223

Tab V

OUT

Front View

SOT-223 -5

4

1

5

23

#1 Sense
#2 Adj/GND
#3 OUT
#4 Control
#5 V

IN

Front View

TO-252

Vcc Vout

GND

1

23

Front View

TO-252

Vcc Vout

GND

1

23

IN

OUTAdj/GND

Tab V

Front View

SOT- 223

OUT

GND

V

CC

Tab GND

Front View

SOT- 223

IN

OUTAdj/GND

Tab V

Front View

SOT- 223

OUT

GND

V

CC

Tab GND

Front View

SOT- 223

Bay Linear, Inc

2418 Armstrong Street, Livermore, CA 94550 Tel: [phone], Fax: [phone] www.baylinear.com

B033

Absolute Maximum Rating

Parameter Min Max Unit

Maximum Input Voltage 7.0 V
Operating Junction Temperature Range 0 125
Storage Temperature Range -65 150
Lead Temperature (Soldering 10 Sec.) 300

°C

Electrical Characteristics

(VIN = 7V; TJ=25°C IO = 10mA to 1.0Amp, unless otherwise specified)

Parameter Symbol Conditions MIN TYP MAX UNIT

1.213 1.250 1.288 V

1.200 1.300

Reference Voltage VO B033-adj, I

OUT

=10mA, VIN-V

OUT

=2V, TJ=25°C

1.5V≤(V

IN-VOUT

) ≤5.75V

10mA≤I

OUT≤IFULL LOAD

-3%

1.250

+3%

V

Line Regulation (1) REG

(line)

(V

OUT

+1.5)≤VIN≤7V, I

OUT

=10mA

0.010 0.6

Load Regulation (1) REG

(LOAD) (Vin-Vout

)=2V

10mA≤I

OUT≤IFULL LOAD

T= 25 °C

0.10 0.9

%

B033-1.8 I

OUT

=10mA, VIN=3.8V, TJ=25°C

0≤I

OUT

≤1.0Amp, 3.2V≤VIN≤7V

1.710 1.80 1.890

V

B033-2.5 I

OUT

=10mA, VIN=4.5V, TJ=25°C

0≤I

OUT

≤1.0Amp, 4.0V≤VIN≤7V

2.375 2.50 2.625

V

B033-3.0 I

OUT

=10mA, VIN=4.85V, TJ=25°C

0≤I

OUT

≤1.0Amp, 4.35V≤VIN≤7V

2.850 3.00 3.150

V

B033-3.3 I

OUT

=10mA, VIN=5.0V, TJ=25°C

0≤I

OUT

≤1.0Amp, 4.8V≤VIN≤7V

3.13 3.30 3.470

V

Output Voltage VO

B033-5.0 I

OUT

=10mA, VIN=6.0V, TJ=25°C

0≤I

OUT

≤1.0Amp, 6.5V≤VIN≤7V

4.750 5.00 5.250

V

Dropout Voltage (3 pin) V

D

Control Input
V

POWER=VOUT

+0.8, I

LOAD

=10mA

V

POWER=VOUT

+0.8, I

LOAD

=1.0Amp,

0.80

0.80

1.00

1.10

V

Dropout Voltage (5pin) VD Power Input

V

CONTROL=VOUT

-+2.5V, I

LOAD

=1.0Amp,

0.35 0.40 V

Current Limit I

S

(Vin-V

out

)=2V

1.0 1.1 A

Minimum Load Current I

MIN LOAD

1.5V≤(VIN-V

OUT

) ≤5.75V

10 mA

Temperature Regulation T

A

T= 25 °C, 30ms pulse

0.004 0.02 %/W

Long Term Stability -

T= 25 °C, 1000Hrs

0.03 1.0 %

Temperature Stability T

S

0.5 %

Adjust pin Current -

T= 25 °C

35 120

µA

Ripple Rejection R

A

F=120Hz, C

ADJ

=22µF, C

OUT

=22µF Tantalum

I

OUT=IFULL LOAD

, (Vin-V

out

)=3V (Note 5)

60 75 dB

Thermal Shutdown 155

°C
Thermal Shutdown
Hysterics

10

°C

Thermal Resistance
Junction to case

-
SOT-223
DD Package

15

3.0

15

3.0

°C/W

Note: Output Switch tests are performed under pulsed conditions to minimize power dissipation

Bay Linear, Inc

2418 Armstrong Street, Livermore, CA 94550 Tel: [phone], Fax: [phone] www.baylinear.com

B033

TYPICAL CHRACTRISTICS

B033-2.85

B033-ADJ