L6933H12 Datasheet, PDF (1/12 Pages) STMicroelectronics – High performance 2A ULDO linear regulator with Soft Start

L6933H1.2
High performance 2A ULDO linear regulator with Soft Start
Features
■ 2 V to 14 V input voltage range
■ 200 mΩ r_DS(on) max
■ 200 µA quiescent current at any load
■ Excellent load and line regulation
■ Adjustable from 1.2 V to 5 V
■ 1 % voltage regulation accuracy
■ Power Good output
■ MLCC capacitors filter supported
■ Adjustable Soft Start
■ Short circuit protection
■ Thermal shut down
■ HSOP8 package
Applications
■ Motherboards, mobile PC
■ Hand-held instruments
■ PCMCIA Cards
■ Processors I/O
■ Chipset and RAM supply
Figure 1. Typical operating circuit
HSOP8
Description
The L6933H1.2 ultra low drop output linear
regulator operates from 2 V to 14 V and is able to
support output current up to 2 A. Designed with
an internal 50 mΩ N-channel MOSFET, it can be
used for on board DC-DC conversions saving in
real estate, list of components, low noise
generation and power dissipation. L6933H1.2 is
available as adjustable version from 1.2 V to 5 V
with a voltage regulation accuracy of 1 %.
A Soft Start function allows the device to smoothly
increase the Output Voltage at the start-up,
avoiding overshoot. Inhibit function is provided.
The upper current limit is fixed at 2.5 A to control
the current in short circuit condition within ± 8 %.
The current is sensed in the power MOS in order
to limit the power dissipation.
The device is also provided with a thermal shut
down that limits the internal temperature at
150 °C with a histeresys of 20 °C.
Table 1. Device summary
Order codes
L6933H1.2
L6933H1.2TR
November 2007
Package
HSOP8
HSOP8
Rev 3
Packaging
Tube
Tape and reel
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