1FEATURES

2• Adjustable Buck Converter with a 2.2A, 0.16Ω,

Internal Switch (Buck 1)

• Adjustable Buck Converter with a 3.2A, 0.16Ω,

Internal Switch (Buck 2)

• Operating Input Voltage Range of 4V to 20V

• Input Undervoltage Protection

• 300kHz to 600kHz Pin Adjustable Operating

Frequency

• Over Temperature Protection

• Small 24-Lead TSSOP Package

APPLICATIONS

• TFT-LCD Displays

• Handheld Devices

• Portable Applications

• Laptop Computers

• Automotive Applications

DESCRIPTION

The LM2717-ADJ is composed of two PWM DC/DC

buck (step-down) converters. Both converters are

used to generate an adjustable output voltage as low

as 1.267V. Both also feature low RDSON (0.16Ω)

internal switches for maximum efficiency. Operating

frequency can be adjusted anywhere between

300kHz and 600kHz allowing the use of small

external components. External soft-start pins for each

converter enables the user to tailor the soft-start

times to a specific application. Each converter may

also be shut down independently with its own

shutdown pin. The LM2717-ADJ is available in a low

profile 24-lead TSSOP package ensuring a low profile

overall solution.