Linear Technology LTC3577/LTC3577-1 Power Management IC Datasheet

About this manual

The LTC3577/LTC3577-1 integrates multiple power management functions into a single IC to reduce complexity and board area in handheld devices. Key features include five voltage regulators (three buck converters and two LDOs), a battery charger with trickle charge, an LED driver for LCD backlights, and pushbutton control for debouncing and hard resets.

What's inside

• Introduction
• Pushbutton Control
• Input Power Sources
• Battery Charger
• Three Bucks Two LDOs
• LED Driver
• Multiphase Operation

Frequently asked questions

What happens if a user holds the pushbutton down for five seconds?

Holding the pushbutton down for five seconds produces a hard reset that shuts down the three bucks, the two LDOs, and the LED driver.

What is the maximum charge current the battery charger can provide?

The battery charger can provide a charge current up to 1.5A via V BUS or wall adapter when available.

What is the maximum output voltage for the LED boost driver configured as a constant voltage boost converter?

The LED boost driver can be configured as a fixed voltage boost, providing up to 0.75W at 36V.