Summary:
The TPS55340 is a monolithic non-synchronous switching regulator with an integrated 5A, 40V power switch. The device is configurable in several standard switching regulator topologies, including boost, SEPIC, and isolated flyback. The device features a wide input voltage range to support applications powered by multi-cell batteries or regulated 3.3V, 5V, 12V and 24V rails.
The TPS55340 uses current mode PWM (Pulse Width Modulation) control to regulate the output voltage and is equipped with an internal oscillator. The PWM switching frequency is set by an external resistor or synchronized to an external clock signal. The user can program the switching frequency from 100kHz to 1.2MHz.
Device characteristics:
Internal 5A, 40V Low Side Field Effect Transistor (MOSFET) Switch
2.9V to 32V input voltage range
±0.7% reference voltage
0.5mA running quiescent current
2.7μA turn off the supply current
Fixed frequency current mode pulse width modulation (PWM) control
Frequency adjustment from 100kHz to 1.2MHz
Synchronization capability to an external clock
Adjustable soft start time
Pulse skip mode for higher frequencies at light loads
Cycle-by-cycle current limit, thermal shutdown, and undervoltage lockout (UVLO) protection
3mm x 3mm, quad flat no-lead (QFN)-16 package with PowerPad
Wide TJ operating temperature range: -40°C to 150°C
Device use:
3.3V, 5V, 12V, 24V power conversion
Boost, SEPIC, and Flyback topologies
Thunderbolt port for tablet and portable personal computer (PC), power dock
Industrial power system
Asymmetric Subscriber Digital Loop (ADSL) Modem
TPS55340 typical application circuit (boost type)
TPS55340 pin function diagram
TPS55340 internal structure block diagram
Reference materials:
1.TPS55340 data sheet can be found in the PDF document (click on the PDF file to download)
2. Learn electronic components from scratch: http://
3. For the content of related electronic components, please refer to: http://
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