Datasheet Texas Instruments PTH04070WAH — 数据表

PTH04070W
www.ti.com SLTS227B – SEPTEMBER 2004 – REVISED OCTOBER 2007 3-A, 3.3/5-V INPUT ADJUSTABLE SWITCHING REGULATOR FEATURES 1 Up to 3-A Output Current at 85°C
3.3-V / 5-V Input Voltage
Wide-Output Voltage Adjust
(0.9 V to 3.6 V)
160 W/in3 Power Density
Efficiencies Up To 94%
On/Off Inhibit
Undervoltage Lockout (UVLO)
Output Overcurrent Protection
(Nonlatching, Auto-Reset)
Overtemperature Protection
Ambient Temp. Range: –40°C to 85°C Surface Mount Package
Safety Agency Approvals:
UL/IEC/CSA-C22.2 60950-1 APPLICATIONS Telecommunications, Instumentation,
and General-Purpose Circuits DESCRIPTION
The PTH04070W is a highly integrated, low-cost switching regulator module that delivers up to 3 A of output
current. Occupying less PCB area than a standard TO-220 linear regulator IC, the PTH04070W provides output
current at a much higher efficiency and with much less power dissipation, thereby eliminating the need for a heat
sink. Their small size (0.5 Г— 0.4 in), high efficiency, and low cost makes these modules attractive for a variety of
applications.
The input voltage range of the PTH04070W is from 3 V to 5.5 V, allowing operation from either a 3.3-V or 5-V
input bus. Using state-of-the-art switched-mode power-conversion technology, the PTH04070W can step down to …