LP2951CM Ver la hoja de datos (PDF) - Fairchild Semiconductor

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componentes Descripción

Fabricante

LP2951CM

Adjustable Micro Power Voltage Regulator

Fairchild Semiconductor 

LP2951

Electrical Characteristics

(Refer to the test circuit, Ta = 25°C, unless otherwise specified, )

Parameter

ALL VOLTAGE OPTIONS

Output Voltage Temperature Coefficient

Line Regulation (Note2)

Load Regulation (Note2)

Dropout Voltage

Ground Current

Current Limit

8-PIN VERSIONS ONLY

Reference Voltage

ERROR COMPARATOR

Output Low Voltage

High Threshold Voltage

Low Threshold Voltage

Hysteresis

SHUTDOWN INPUT

Shutdown Threshold Range

Shutdown Input Current

Symbol

ΔV/ΔT

ΔV

ΔV

VD

IG

ICL

VREF

VREF

VOL

VTH

VTL

VHYS

VSD

ISD

Conditions

Min. Typ. Max. Unit

(Note1)

(Vo + 1)V ≤ VIN ≤ 28V

IL = 50mA

100uA ≤ IL ≤ 100mA

IL = 100uA

IL = 100mA

IL = 100uA

IL = 100mA

VO = 0V

- 50 - ppm/°C

-

- 0.4 %

-

- 0.3 %

-

- 150 mV

-

- 600 mV

-

- 140 uA

-

-

7 mA

110 165 220 mA

VIN = (Vo + 1)V, IL = 100uA 1.235 1.26 1.285 V

(Note3)

1.225 1.26 1.295 V

VIN = (Vo - 0.5)V, IOL =400uA - 150 400 mV

(Note4)

25 60 - mV

(Note4)

- 75 140 mV

(Note4)

- 15 - mV

(Note5)

VSD = 2.4V

VSD = 28V

0.6 1.3 2.0 V

- 30 100 uA

- 450 750 uA

Note :

1. Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total

temperature range.

2. Regulation is measured at constant junction temperature , using pulse testing with a low duty cycle.

3. Vref ≤ Vout ≤ (Vin - 1V), 2.5V ≤ Vin ≤ 28V, 100uA ≤ IL ≤ 100mA, TA ≤ TAMAX .

4. Threshold and hysteresis are expressed in terms of voltage differential at the Feedback terminal below the normal

reference . To express these thresholds in terms of output voltage change , multiply by the error amplifier gain

= VO / VREF = (R1 + R2) / R2 .

5. Vshutdown ≤ 0.6 V , VOUT =ON , Vshutdown ≥ 2.0 V, VOUT = OFF.

3

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