CS51411(2002) Ver la hoja de datos (PDF) - ON Semiconductor

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CS51411
(Rev.:2002)

1.5 A, 260 kHz and 520 kHz, Low Voltage Buck Regulators with External Bias or Synchronization Capability

ON Semiconductor 

VIN

BIAS

VFB

CS51411, CS51412, CS51413, CS51414

SHDNB

SYNC

2.9 V LDO

Voltage

Regulator

Shutdown

Comparator

+

–

+

1.3 V –

5.0 µA

Artificial

Ramp

1.46 V

∑

+

–

PWM

Comparator

Oscillator

Thermal

Shutdown

SQ

R

Output

Driver

Current

Limit

Comparator

IREF

1.270 V

+

–

–

+

Error

Amplifier

0.32 V

+

–

–

+

Frequency

and Current

Limit Foldback

IFOLDBACK

VC

Figure 2. Block Diagram

BOOST

VSW

GND

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