Datasheet Texas Instruments LM2642MTC — 数据表

LM2642
www.ti.com SNVS203I – MAY 2002 – REVISED APRIL 2013 LM2642 Two-Phase Synchronous Step-Down Switching Controller
Check for Samples: LM2642 FEATURES DESCRIPTION The LM2642 consists of two current mode
synchronous buck regulator controllers with a
switching frequency of 300kHz. 1 2 Two Synchronous Buck Regulators
180В° Out of Phase Operation
4.5V to 30V Input Range
Power Good Function Monitors Ch.1
37ВµA Shutdown Current
0.04% (typical) Line and Load Regulation Error
Current Mode Control With or Without a Sense
Resistor
Independent Enable/Soft-start Pins Allow
Simple Sequential Startup Configuration.
Configurable for Single Output Parallel
Operation. (See Figure 3).
Adjustable Cycle-by-Cycle Current Limit
Input Under-voltage Lockout
Output Over-voltage Latch Protection
Output Under-voltage Protection with Delay
Thermal Shutdown
Self Discharge of Output Capacitors When the
Regulator is OFF …