LP2950-30-T92-B [UTC]

100 mA LOW-DROPOUT VOLTAGE REGULATOR; 百毫安低压差稳压器


型号：	LP2950-30-T92-B
厂家：	Unisonic Technologies
描述：	100 mA LOW-DROPOUT VOLTAGE REGULATOR 百毫安低压差稳压器稳压器
文件：	总7页 (文件大小：96K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

UNISONIC TECHNOLOGIES CO., LTD

LP2950/2951

LINEAR INTEGRATED CIRCUIT

100 mA LOW-DROPOUT

VOLTAGE REGULATOR

TO-92

ꢀ

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.

SOP-8

ꢀ

FEATURES

* Fixed output versions, 2.5V, 3V, 3.3V, 3.6V and 5V, are available.

* High accuracy output voltage.

DIP-8

* Extremely low quiescent current and dropout voltage.

* Extremely tight load and line regulation.

* Current and thermal limiting.

*Pb-free plating product number:

LP2950L-XX/LP2951L

* Very low temperature coefficient.

* Logic controlled shutdown and err flog available for 8 pin package.

* Output voltage programmable for LP2951.

ꢀ ORDERING INFORMATION

Ordering Number

Package

Packing

Normal

Lead Free Plating

LP2950L-xx-D08-T

LP2950L-xx-S08-T

LP2950L-xx-S08-R

LP2950L-xx-T92-B

LP2950L-xx-T92-K

LP2951L-D08-T

LP2950-xx-D08-T

LP2950-xx-S08-T

LP2950-xx-S08-R

LP2950-xx-T92-B

LP2950-xx-T92-K

LP2951-D08-T

LP2951-S08-T

DIP-8

SOP-8

TO-92

DIP-8

Tube

Tape Reel

Tape Box

Bulk

Tube

LP2951L-S08-T

SOP-8

Tube

LP2951-S08-R

LP2951L-S08-R

Tape Reel

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

LP2950L-xx-S08-R

(1)Packing Type

(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

(2)Package Type

(3)Output Voltage Code

(4) L: Lead Free Plating, Blank: Pb/Sn

(4)Lead Plating

ꢀ

OUTPUT VOLTAGE CODE(For LP2950)

OUTPUT VOLTAGE

CODE

2.5V

3.0V

3.3V

3.6V

5.0V

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LP2950/2951

LINEAR INTEGRATED CIRCUIT

ꢀ

PIN CONFIGURATIONS

UTC LP2950

OUTPUT

SENSE

INPUT

OUTPUT

INPUT

FEEDBACK

5V TAP

UTC

LP2951

UTC

LP2950

SHUTDOWN

GND

SHUTDOWN

GND

OUTPUT

INPUT

GND

ERROR

TO-92 Plastic Package

Bottom View

SOP-8 OR DIP-8 PACKAGE

FOR UTC LP2951

SOP-8 OR DIP-8 PACKAGE

FOR UTC LP2950

ꢀ

BLOCK DIAGRAM

5V 150mA

MAX.

UNREGULATED

FEEDBACK

INPUT

OUTPUT

SENSE

5V TAP

ERROR

GND

182kΩ

60kΩ

SHUT

DOWN

ERROR

AMPLIFIER

330KΩ

FROM CMOS

OR TTL

1.5 μF

60mV

ERROR

DETECTION

COMPARATOR

TO CMOS

OR TTL

1.23

REF

FOR UTC LP2951

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LP2950/2951

LINEAR INTEGRATED CIRCUIT

ꢀ

ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

V_CC

RATINGS

-0.3 ~ +30

-1.5 ~ +30

-0.3 ~ +30

-40 ~ +125

-65 ~ +150

UNIT

Supply Voltage

Feedback Voltage

V_FB

Shutdown Voltage

V_SHDN

T_J

Operation Junction Temperature

Storage Temperature

°C

T_STG

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.

ꢀ ELECTRICAL CHARACTERISTICS (T_J=25°C, V_IN=6V, I_L=100µA, C_L=1µF, unless otherwise specified.)

For All Version:

PARAMETER

Output Voltage

SYMBOL

V_OUT

TEST CONDITION

T_J=25°C (Note 1)

-25°C≦T_J≦+85°C(Note 1)

MIN

TYP

MAX

UNIT

V_OUT×0.98 V_OUTV_OUT×1.02

Output Voltage

V_OUT100µA≦I_L≦100mA, T_J≦T_J(max) V_OUT×0.98 V_OUTV_OUT×1.02

Output Voltage Temperature

Coefficient

TcVo

100

ppm/°C

ΔV_OUT

Line Regulation

6V≦V_IN≦30V

100µA≦I_L≦100 mA

I_L=100µA

0.03

0.04

380

0.1

450

120

0.2

Load Regulation

150

600

140

V_D

I_G

Dropout Voltage

Ground Current

I_L=100mA (Note 2)

µA

I_L=100µA

I_L=100mA

Dropout Ground Current

Current Limit

V_IN=4.5V,I_L=100µA

V_OUT=0

110

160

170

200

220

430

160

100

µA

I_LIMIT

Output Noise (10Hz ~ 100KHz)

(Bypass=0.01µF pins 7 to 1

(LP2951))

C_L=1µF

C_L=200µF

C_L=3.3µF

µV

For UTC LP2951 8-Pin Version Only

PARAMETER

Reference Voltage

SYMBOL

V_REF

TEST CONDITION

Over temperature(Note 4)

MIN

1.22

1.19

TYP

MAX

1.25

1.27

UNIT

1.235

Reference Voltage

Feedback pin Bias Current

Reference Voltage Temperature

Coefficient

I_FB

V_REF(TC)

I_FB(TC)

ppm/°C

nA/°C

Feedback Bias Current

Temperature Coefficient

Error Comparator

0.1

Output Leakage Current

Output Low Voltage

I_O(LEAK)V_OH=30V

µA

V_OL

V_IN=4.5V, I_OL=400µA

250

V_THU

V_THL

V_HYS

Upper

Threshold Voltage

Lower

(Note 3)

3.2

%VO

7.6

Hysteresis

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LP2950/2951

LINEAR INTEGRATED CIRCUIT

ꢀ ELECTRICAL CHARACTERISTICS(Cont.)

For UTC LP2951 8-Pin Version Only

PARAMETER

Shutdown Input

SYMBOL

TEST CONDITION

Regulator ON

MIN

2.0

TYP

1.3

MAX

0.70

UNIT

Low

V_IL

V_IH

Input Logic Voltage

High

Regulator OFF

V_SHDN=2.4V

µA

Shutdown Pin Input Current

I_SHDN

I_DFF

V_SHDN=30V

450

600

Regulator Output Current

Shutdown

V_SHDN≧2V, V_IN≦30V, V_OUT=0

µA

Feedback pin tied to 5V Tap.

Note 1:Additional conditions for 8-pin versions are FB pin tied to 5V_TAP, Output tied to Sense(V_OUT=5V) and

V_SHDN≤0.8V.

Note 2: Dropout Voltage is defined as the input to output differential at which the output voltage drops 100mV below

its nominal value measured at 1V differential.

Note 3: Comparator thresholds are expressed in terms of percentage value of voltage output.

Note 4: V_REF≤V_OUT≤(V_IN-1V), 2.3V≤V_IN≤30V, 100µA≤I_L≤100mA, T_J≤T_J(MAX)

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LINEAR INTEGRATED CIRCUIT

ꢀ

TYPICAL APPLICATION CIRCUIT

10 Ampere Low Dropout Regulator

CURRENT LIMIT

SECTION

+V^IN=Vout+0.5V

680Ω

2N3906

0.05Ω

UTC

D65H0

470Ω

4.7MΩ

+VIN

OUT 100m A

10kΩ

ERROR

UTC LP2951

100µF

4.7µF

220Ω

GND Vout

20kΩ

47Ω

0.033µF

VOUT=1.23V*(1+R1/R2)

For 5V output use internal resistors.Wire pin 6 to 7 and wire pin2 to +V^OUT

Fig.1

UTC LP2950-2.5

OUT

UTC LP2950-3.0

UTC LP2950-3.3

UTC LP2950-3.6

UTC LP2950-5.0

Fig.2

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LINEAR INTEGRATED CIRCUIT

ꢀ

TYPICAL CHARACTERISTICS

Dropout Characteristics

Input Current

150

140

130

120

110

100

R_L=50Ω

R =50kΩ

R =50Ω

9 10 11 12

Input Voltage (V)

InputVoltage (V)

Ground Pin Current

120

110

100

V _IN= 6V

I_L=100mA

V =6V

I_L=100µA

-75 -50 -25

25 50 75 100 125 150

-75 -50 -25

25 50 75 100125 150

Temperature (℃)

Dropout Voltage

Shutdown Threshold Voltage

1.8

1.6

600

500

I_L=100mA

1.4

1.2

400

300

200

100

1.0

I =100µA

≈

0.8

0.6

-75 -50 -25

25 50 75 100125 150

-75 -50 -25

25 50 75 100125 150

Temperature (℃)

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LP2950/2951

LINEAR INTEGRATED CIRCUIT

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TYPICAL CHARACTERISTICS(Cont.)

Short Circuit Current

Dropout Voltage

500

400

170

160

150

140

130

300

200

120

J=25℃

100

110

100

0.1

100

-75 -50 -25

25 50 75 100 125 150

Temperature(℃)

Output Current(mA)

UTC assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or

other parameters) listed in products specifications of any and all UTC products described or contained

herein. UTC products are not designed for use in life support appliances, devices or systems where

malfunction of these products can be reasonably expected to result in personal injury. Reproduction in

whole or in part is prohibited without the prior written consent of the copyright owner. The information

presented in this document does not form part of any quotation or contract, is believed to be accurate

and reliable and may be changed without notice.

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