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TC1303B
  • TC1303B
  • TC1303B

TC1303B

In Production

The TC1303B combines a 500mA synchronous buck regulator and a 300mA low-dropout (LDO) regulator with a power-good monitor to provide a highly integrated solution for applications that require multiple supply voltages. The power-good function monitors the output of the LDO regulator.

Microchip Technology TC1303B Product Info

16 April 2026 0

Parameters

Regulator Type

Multi-Output

Configuration

Synchronous Buck Step-Down and Independent LDO

Supported Topology

Buck

Supported Output

0

Minimum Input Voltage (V)

0

Maximum Input Voltage (V)

0

Output Current (mA) Max

500

Maximum Frequency (kHz)

0

Operating Temperature Range (°C)

-40C to +85C

Vref (V)

0.8

Duty Cycle Min (%)

0

Duty Cycle Max (%)

100

UVLO

2.55V

Switching Frequency (kHz) kHz (kilohertz)

2,000

Input Voltage Range Min

2.7

Input Voltage Range Max

5.5

Output Current

300

Temp Range Min °C (degrees Celsius)

-40

Temp Range Max °C (degrees Celsius)

+85

Alternative Topology

LDO

Vout Min (V)

1.5

Vout Max (V)

3.3

Quiescent Current (mA) typ

70.1

Light Load Efficiency Mode

Yes

Switch current (A) typ

0

Automotive Rated

No

Automotive Qualified

No

SHUTDOWN Current (µA) (Typ)

0.05

# of Outputs

2

Vfb V (volt)

0.8

Synchronous Rectifier

Yes

Features

  • Independent 300mA Low-Dropout Regulator
  • Power-good Monitor on the LDO Output with 300mS Delay
  • Both Outputs Internally Compensated
  • Independent Shutdown for the Buck and LDO Outputs
  • Automatic PWM to PFM mode transition
  • Small 10-Pin 3x3 DFN and MSOP
  • Undervoltage Lockout (UVLO)
  • Output Short Circuit and Overtemperature Protection

Description

The TC1303B combines a 500mA synchronous buck regulator and a 300mA low-dropout (LDO) regulator with a power-good monitor to provide a highly integrated solution for applications that require multiple supply voltages. The power-good function monitors the output of the LDO regulator.

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