TPS51123 TPS51123RGER 51123 TPS51123A 51123A (Step Down) Power IC

Description

The TPS51123 is a cost‑effective, high-performance dual-synchronous buck (step-down) controller designed primarily for notebook system power supplies.

Key Specifications

• Input voltage range: 5.5 V to 28 V

• Output voltage range: 2.0 V to 5.5 V

• Supply current (typical no-load): ~550 µA

• Maximum duty cycle: ~93%

• Package: 24‑pin QFN

Functional Features

• Two synchronous buck channels (for dual output rails)

• Built-in 100 mA LDOs (5 V and 3.3 V) with internal switching

• Internal 1% 2 V reference output

• “Out‑of‑Audio” selectable mode: reduces acoustic noise in light-load modes

• Adaptive on-time control (D‑CAP) with four selectable switching frequency settings

• Internal soft‑start (~1.6 ms) for voltage servo

• Built‑in protections: over-voltage (OVP), under-voltage (UVP), over-current (OCP), thermal shutdown (non‑latch)

• Output discharge function (helps pull down outputs when disabled)

• Power-good indicator

• Temperature and operating range: –40 °C to +85 °C

Please Note:

• No Returns, Exchanges, or Warranty available.

• Kindly verify the model number and ensure it matches your product before placing an order.

• We guarantee premium quality.

• All items are thoroughly inspected prior to shipping.