BAYLI B2117S-5, B2117S-3.3, B2117S-2.5, B2117S-1.8 Datasheet

Bay Linear, Inc

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

Dual 1.0Amp Low Dropout

B2117

Voltage Regulator

Pin Connection

Ordering Information

Devices Package Temp.

B2117S-X TO-263

0 °C to 125 °C

X=output voltage

Description

The Bay Linear B2117 is a five terminal Dual positive NPN
regulator offered as adjustable or fix voltages of 1.8V, 2.5V,

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.

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 B2117 is offered in a 5-pin SOT-263,

Features

• Adjustable Output Down to 1.2V

• Output Current of 1.0Amp

• Low Dropout 1.0V for B2117

• Adjustable & Fix 1.8V, 2.5V, 3.3V

• 0.05% Load Regulation

• Current & Thermal Limiting

• Lower Cost SOT-89 Package

• Available in TO-263

Applications

• High efficiency Linear Regulator

• Post regulators fro Switching Supplies

• Battery Charger

• 5V to 3.3V linear Regulators

• Motherboard Clock Supplies

Bay Linear

Inspire the Linear Power

V

Input

1

2

3

4

5

V

OUT 2

TO-263-5 Package

VV

ADJ 2

1

2

3

4

5

VV

.

TO-263-5 Package

V

OUT 1

V

ADJ 1

VV

Input

1

2

3

4

5

V

OUT 2VOUT 2

TO-263-5 Package

VV

ADJ 2

1

2

3

4

5

VV

.

TO-263-5 Package

VV

.

TO-263-5 Package

V

OUT 1VOUT 1

V

ADJ 1

Bay Linear, Inc

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

B2117

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

1.238 1.250 1.262 V

1.225 1.275

Reference Voltage VO 1117-adj, I

OUT

=10mA, VIN-V

OUT

=2V, TJ=25°C

1.5V≤(V

IN-VOUT

) ≤5.75V

10mA≤I

OUT≤IFULL LOAD

-2%

1.250

+2%

V

Line Regulation (1) REG

(line)

(V

OUT

+1.5)≤VIN≤7V, I

OUT

=10mA

0.005 0.5

Load Regulation (1) REG

(LOAD) (Vin-Vout

)=2V

10mA≤I

OUT≤IFULL LOAD

T= 25 °C

0.05 0.5

%

1117-1.8 I

OUT

=10mA, VIN=3.8V, TJ=25°C

0≤I

OUT

≤1.0Amp, 3.2V≤VIN≤7V

1.782

1.746

1.80

1.80

1.818

1.854

V

1117-2.5 I

OUT

=10mA, VIN=4.5V, TJ=25°C

0≤I

OUT

≤1.0Amp, 4.0V≤VIN≤7V

2.475

2.450

2.50

2.50

2.525

2.550

V

1117-3.3 I

OUT

=10mA, VIN=5.0V, TJ=25°C

0≤I

OUT

≤1.0Amp, 4.8V≤VIN≤7V

3.267

3.235

3.30

3.30

3.333

3.365

V

Output Voltage VO

1117-5.0 I

OUT

=10mA, VIN=6.0V, TJ=25°C

0≤I

OUT

≤1.0Amp, 6.5V≤VIN≤7V

4.950

4.900

5.00

5.00

5.050

5.100

V

Dropout Voltage 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

1.20

1.30

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

-
DD Package

3.0

3.0

°C/W

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