BAYLI B1117N-ADJ, B1117N-3.3, B1117N-2.85, B1117N-2.5, B1117N-1.8 Datasheet

Bay Linear

Inspire the Linear Power

1.0Amp Low Dropout Voltage Regulator		B1117
Adjustable & Fix (0.40Volt Dropout)

Description

The Bay Linear B1117 is a three terminal positive NPN regulator offered as adjustable or fix voltages of 1.5V,1.8V, 2.5V, 2.85V, 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 B1117 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 B1117

•Dropout of 0.40 V in for B1117A

•Adjustable & Fix 1.5V, 1.8V, 2.5V, 2.85V, 3.0V, 3.3V, 5.0V

•0.05% Load Regulation

•Current & Thermal Limiting

•Lower Cost SOT-89 Package

•Available in SOT-223, and TO-252, TO-263 & SO-8

•Similar to industry Standard LT1117

Applications

•Active SCSI terminators

•High efficiency Linear Regulator

•Post regulators fro Switching Supplies

•Battery Charger

•5V to 3.3V linear Regulators

•Motherboard Clock Supplies

Pin Connection

8-Pin Surface Mount

ADJ

1

8

IN

SOT-223

Tab VOUT

NC

2

7

IN

OUT

3

6

IN

OUT

4

5

N.C.

Adj/GND OUT IN

Top View

Front View

Ordering Information

Devices	Package	Temp.
B1117D-X	TO-252	0 °C to 125 °C
B1117N-X	TO-223	0 °C to 125 °C
B1117T-X	TO-220	0 °C to 125 °C
B1117S-X	TO-263	0 °C to 125 °C
B1117M-X	SO-8	0 °C to 125 °C

SOT-223-5

Tab VOUT

1

2

3

4

5

Front View

#1 Sense

#2 Adj/GND

#3 OUT TO-252

#4 Control

#5 VIN

1 2 3

ADJ/GN VOUT VIN

Front

5 VPOWER
4	VCONTROL
3	OUTPUT
2	ADJ/GND.
1 SENSE
TO-263-5 Package

Bay Linear, Inc 2418 Armstrong Street, Livermore, CA 94550 Tel: [phone], Fax: [phone]

www.baylinear.com

													B1117
	Absolute Maximum Rating
	Parameter					Min					Max			Unit
	Maximum Input Voltage										7.0			V
	Operating Junction Temperature Range						0				125			°C
	Storage Temperature Range						-65				150
	Lead Temperature (Soldering 10 Sec.)										300
	Electrical Characteristics
	(VIN = 7V; TJ=25°C IO = 10mA to 1.0Amp, unless otherwise specified)
	Parameter		Symbol	Conditions				MIN			TYP	MAX		UNIT
	Reference Voltage		VO	1117-adj, IOUT=10mA, VIN-VOUT=2V, TJ=25°C				1.238			1.250	1.262		V
				1.5V≤(VIN-VOUT) ≤5.75V				1.225			1.250	1.275		V
				10mA≤IOUT≤IFULL LOAD				-2%				+2%
	Line Regulation (1)		REG (line)	(VOUT+1.5)≤VIN≤7V, IOUT=10mA							0.005	0.2		%
	Load Regulation (1)		REG (LOAD)	(Vin-Vout)=2V							0.05	0.5
				10mA≤IOUT≤IFULL LOAD
				T= 25 °C
	Output Voltage		VO	1117-1.8 IOUT=10mA, VIN=3.8V, TJ=25°C				1.782			1.80	1.818		V
				0≤IOUT≤1.0Amp, 3.2V≤VIN≤7V				1.746			1.80	1.854
				1117-2.5 IOUT=10mA, VIN=4.5V, TJ=25°C				2.475			2.50	2.525		V
				0≤IOUT≤1.0Amp, 4.0V≤VIN≤7V				2.450			2.50	2.550
				1117-2.85 IOUT=10mA, VIN=4.85V, TJ=25°C				2.820			2.85	2.880		V
				0≤IOUT≤1.0Amp, 4.35V≤VIN≤7V				2.790			2.85	2.910
				1117-3.3 IOUT=10mA, VIN=5.0V, TJ=25°C				3.267			3.30	3.333		V
				0≤IOUT≤1.0Amp, 4.8V≤VIN≤7V				3.235			3.30	3.365
				1117-5.0 IOUT=10mA, VIN=6.0V, TJ=25°C				4.950			5.00	5.050		V
				0≤IOUT≤1.0Amp, 6.5V≤VIN≤7V				4.900			5.00	5.100
	Dropout Voltage		VD	Control Input
				VPOWER=VOUT+0.8, ILOAD =10mA							0.80	1.00		V
				VPOWER=VOUT+0.8, ILOAD =1.0Amp,							0.80	1.10
	Dropout Voltage		VD	Power Input							0.35	0.40		V
				VCONTROL=VOUT-+2.5V, ILOAD=1.0Amp,
	Current Limit		IS	(Vin-Vout)=2V				1.0			1.1			A
	Minimum Load Current		IMIN LOAD	1.5V≤(VIN-VOUT) ≤5.75V				10						mA
	Temperature Regulation		TA	T= 25 °C, 30ms pulse							0.004	0.02		%/W
	Long Term Stability		-	T= 25 °C, 1000Hrs							0.03	1.0		%
	Temperature Stability		TS								0.5			%
	Adjust pin Current		-	T= 25 °C							35	120		µA
	Ripple Rejection		RA	F=120Hz, CADJ=22µF, COUT=22µF Tantalum				60			75			dB
				IOUT=IFULL LOAD, (Vin-Vout)=3V (Note 5)
	Thermal Shutdown										155			°C
	Thermal Shutdown										10			°C
	Hysterics
	Thermal Resistance		-	SOT-223							15	15		°C/W
	Junction to case			DD Package							3.0	3.0
	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

B1117

TYPICAL CHRACTRISTICS

B1117-2.85

B1117-ADJ

Bay Linear, Inc 2418 Armstrong Street, Livermore, CA 94550 Tel: [phone], Fax: [phone]

www.baylinear.com