UNISONIC TECHNOLOGIES CO LP2950, LP2951 Technical data

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UNISONIC TECHNOLOGIES CO., LTD

LP2950/2951

LINEAR INTEGRATED CIRCUIT

100 mA LOW-DROPOUT
VOLTAGE REGULATOR

 DESCRIPTION

The UTC LP2950/2951 are monolithic integrated voltage
regulators with low dropout voltage, and low quiescent current. It
includes many features that suitable for different applications.

 FEATURES

* Fixed output versions, 2.5V, 3V, 3.3V, 3.6V and 5V, are available.
* High accuracy output voltage.
* Extremely low quiescent current and dropout voltage.
* Extremely tight load and line regulation.
* Current and thermal limiting.
* Very low temperature coefficient.
* Logic controlled shutdown and err flog available for 8 pin package.
* Output voltage programmable for LP2951.

1

*Pb-free plating product number:

LP2950L-XX/LP2951L

TO-92

SOP-8

DIP-8

 ORDERING INFORMATION

Ordering Number

Normal Lead Free Plating
LP2950-xx-D08-T LP2950L-xx-D08-T DIP-8 Tube
LP2950-xx-S08-T LP2950L-xx-S08-T SOP-8 Tube
LP2950-xx-S08-R LP2950L-xx-S08-R SOP-8 Tape Reel
LP2950-xx-T92-B LP2950L-xx-T92-B TO-92 Tape Box
LP2950-xx-T92-K LP2950L-xx-T92-K TO-92 Bulk

LP2951-D08-T LP2951L-D08-T DIP-8 Tube
LP2951-S08-T LP2951L-S08-T SOP-8 Tube
LP2951-S08-R LP2951L-S08-R SOP-8 Tape Reel

Note: xx: Output Voltage Code (For LP2950 only)

LP2950L-xx-S08-R

(1)P acking Type
(2)P ackage Type
(3)O utput V oltage Code

(4)Lead Plating

Package Packing

(1) B: Tape Box, K: Bulk, R: Tape Reel, T: Tube
(2) D08: DIP-8, S08: SOP-8, T92: TO-92
(3) xx: refer to Output Voltage Code
(4) L: Lead Free Plat ing, Blank: Pb/ S n

 OUTPUT VOLTAGE CODE(For LP2950)

OUTPUT VOLTAGE CODE

2.5V 25

3.0V 30

3.3V 33

3.6V 36

5.0V 50

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LP2950/2951 LINEAR INTEGRATED CIRCUIT

 PIN CONFIGURATIONS

UTC LP2950

21 3

OUTPUT

GND

INPUT

TO-92 Plastic Package

Bottom View

 BLOCK DIAGRAM

UNREGULATED

FROM CMOS

DC

OR TTL

SHUT

DOWN

OUTPUT

SENSE

GND

1

2

UTC

LP2951

3

4

8

7

6

5

INPUT

5V TAPSHUTDOWN

ERROR

FEEDBACK

SOP-8 OR DIP-8 PACKAGE

FOR UTC LP2951

FEEDBACK INPUT OUTPUT

182kΩ

ERROR

3

1.23
REF

60mV

AMPLIFIER

ERROR

DETECTION

COMPARATOR

FOR UTC LP2951

60kΩ

OUTPUT

NC

GND

1

2

UTC

LP2950

3

4

8

7

6

5

INPUT

NC

NCSHUTDOWN

ERROR

SOP-8 OR DIP-8 PACKAGE

FOR UTC LP2950

5V 1 5 0m A

187

SENSE

2

5V TAP

6

1.5 μF

ERROR

5

TO CMOS

GND

OR TTL

4

MAX.

330KΩ

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LP2950/2951 LINEAR INTEGRATED CIRCUIT

 ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL RATINGS UNIT
Supply Voltage VCC -0.3 ~ +30 V
Feedback Voltage VFB -1.5 ~ +30 V
Shutdown Voltage V
Operation Junction Temperature T
Storage Temperature T
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.

-0.3 ~ +30 V

SHDN

J

-65 ~ +150 °C

STG

-40 ~ +125 °C

 ELECTRICAL CHARACTERISTICS (T

=25°C, VIN=6V, IL=100µA, CL=1µF, unless otherwise specified.)

J

For All Version:

PARAMETER SYMBOL TEST CONDITION MIN TYP MAX UNIT
Output Voltage V
Output Voltage V

Output Voltage Temperature
Coefficient
Line Regulation
Load Regulation

Dropout Voltage

OUT

OUT

TcVo

ΔV
ΔV

V

Ground Current IG

TJ=25°C (Note 1) V

-25°C≦T

≦+85°C(Note 1) V

J

100µA≦IL≦100mA, TJ≦TJ(max) V

OUT
OUT

D

6V≦V
100µA≦I
IL=100µA
I
I
I

≦30V 0.03 0.1 0.2 %

IN

≦100 mA 0.04 0.1 0.2 %

L

=100mA (Note 2)

L

=100µA

L

=100mA

L

×0.98 V

OUT

×0.98 V

OUT

×0.98 V

OUT

OUT VOUT
OUT VOUT
OUT VOUT

×1.02 V
×1.02 V
×1.02 V

20 100 ppm/°C

50

380

75

8

80
450
120

12

150
600
140

14

mV

µA

mA

Dropout Ground Current VIN=4.5V,IL=100µA 110 170 200 µA

I

Current Limit
Output Noise (10Hz ~ 100KHz)
(Bypass=0.01µF pins 7 to 1
(LP2951))

LIMIT

eN

=0 160 200 220 mA

V

OUT

C

=1µF

L

C

=200µF

L

C

=3.3µF

L

430

160
100

µV

For UTC LP2951 8-Pin Version Only

PARAMETER SYMBOL TEST CONDITION MIN TYP MAX UNIT

V

Reference Voltage
Reference Voltage
Feedback pin Bias Current IFB 20 40 nA
Reference Voltage Temperature
Coefficient
Feedback Bias Current
Temperature Coefficient

Error Comparator

Output Leakage Current I
Output Low Voltage VOL VIN=4.5V, IOL=400µA 250 mV

Threshold Voltage

Upper
Lower

Hysteresis

1.22 1.235 1.25 V

REF

V

Over temperature(Note 4) 1.19 1.27 V

REF

V

REF(TC)

I

FB(TC)

O(LEAK)

V
V
V

50 ppm/°C

0.1 nA/°C

VOH=30V 1 µA

(Note 3) 3.2 %VO

THU

(Note 3) 7.6 %VO

THL

(Note 3) 15 mV

HYS

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