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L6935 Scheda tecnica(PDF) 1 Page - STMicroelectronics

Il numero della parte L6935
Spiegazioni elettronici  High performance 3 A ULDO linear regulator
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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May 2008
Rev 1
1/20
20
L6935
High performance 3 A ULDO linear regulator
Features
Up to 5 V input voltage range
60 mΩ max RDS(on)
35 µA shut-down current
3 A maximum output current
Split bias and power supplies
Adjustable output voltage: 0.5 V to 3.0 V
Excellent load and line regulation: 1 %
accuracy (over temperature)
MLCC supported
Programmable soft-start
Short-circuit protection
3.5 A overcurrent protection
Thermal shut-down
VFQFPN20 4 x 4 x 1.0 mm package
Applications
Motherboard
Mobile PC
Hand-held instruments
PCMCIA cards
Processors I/O
Chipset and RAM supply
Description
L6935 is an ultra low drop output linear regulator
operating up to 5 V input and is able to support
output current up to 3 A. Designed with an
internal low-RDS(on) N-channel MOSFET, it can
be used for on-board DC-DC conversions saving
in real estate, list of components and power
dissipation.
Bias input and power input are split to allow linear
conversion from buses lower than 1.2 V
minimizing power losses.
L6935 provides the application with an adjustable
voltage from 0.5 V to 3.0 V with a voltage
regulation accuracy of 1 %. soft-start is available
to program the output voltage rise-time according
to the external capacitor connected.
Enable and Power Good functions make L6935
suitable for complex systems and programmable
start-up sequencing.
The current limit at 3 A protects the system during
a short circuit. The current is sensed in the power
DMOS in order to limit the power dissipation.
Thermal shut down limits the internal temperature
at 150 °C with a hysteresis of 20 °C.
VFQFPN20
(4.0 x 4.0 x 1.0 mm)
Table 1.
Device summary
Order codes
Package
Packing
L6935
VFQFPN20
Tube
L6935TR
Tape and reel
www.st.com


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