NCV4276 Просмотр технического описания (PDF) - ON Semiconductor

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Компоненты Описание

производитель

NCV4276

400 mA Low−Drop Voltage Regulator

ON Semiconductor 

5.5 − 45 V

Input

II

CI1

1.0 mF

IINH

NCV4276, NCV4276A

I1

CI2

100 nF

INH 2

5Q

NCV4276

3

GND

4 NC

IQ

CQ

22 mF

Output

RL

Input

Figure 3. Applications Circuit; Fixed Voltage Version

II

CI1

1.0 mF

IINH

CI2

100 nF

VQ = [(R1 + R2) * Vref] / R2

I1

5Q

INH 2

NCV4276

NCV4276A

3

GND

4 VA

IQ

CQ

22 mF

Output

R1

RL

R2

Figure 4. Applications Circuit; Adjustable Voltage Version

TYPICAL PERFORMANCE CHARACTERISTICS

1000

100

10

Unstable ESR Region for

CQ = 1 mF − 22 mF

1

0.1

0.01

0

Maximum ESR for

CQ = 1 mF − 22 mF

Stable ESR Region

50 100 150 200 250 300 350 400 450

OUTPUT CURRENT (mA)

10.0

9.0

8.0

7.0

6.0

5.0

4.0

3.0

2.0

1.0

0.0

0

CQ = 10 mF for these

Output Voltages

Unstable Region

2.5 V

3.3 V

1.8 V

Stable Region

50 100 150 200 250 300 350 400 450

OUTPUT CURRENT (mA)

Figure 5. Output Stability with Output Capacitor

ESR, 5.0 V and Adjustable Regulator

Figure 6. Output Stability with Output Capacitor

ESR, 1.8 V, 2.5 V, 3.3 V Regulators

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