L6932D1.8TR ,HIGH PERFORMANCE 2A ULDO LINEAR REGULATORapplicationsreducing the power dissipation.■ MOTHERBOARDSL6932 is available in 1.8V, 2.5V and adj v ..
L6932D2.5 ,HIGH PERFORMANCE 2A ULDO LINEAR REGULATORL6932HIGH PERFORMANCE 2A ULDO LINEAR REGULATOR■ 2V TO 14V INPUT VOLTAGE RANGE■ 200mΩ Rdson MAX.■ 20 ..
L6932D2.5TR ,HIGH PERFORMANCE 2A ULDO LINEAR REGULATORL6932HIGH PERFORMANCE 2A ULDO LINEAR REGULATOR■ 2V TO 14V INPUT VOLTAGE RANGE■ 200mΩ Rdson MAX.■ 20 ..
L6932H1.2 ,High Performance 2A ULDO Linear RegulatorApplications and power dissipation. L6932H1.2 is available as adjustable version from ■ Motherboard ..
L6932H1.2TR ,High Performance 2A ULDO Linear RegulatorFeatures■ 2V to 14V input voltage range■ 200mΩ r maxDS(on)HSO-8■ 200µA quiescent current at any loa ..
L6933H1.2 ,High Performance 2A ULDO Linear Regulator with Soft StartElectrical characteristics . . . . . 55 Typical electrical performance . 66 Soft-Start ..
LC4128V-10T100I , 3.3V/2.5V/1.8V In-System Programmable SuperFAST High Density PLDs
LC4128V-10T128I , 3.3V/2.5V/1.8V In-System Programmable SuperFAST High Density PLDs
LC4128V-5T100C , 3.3V/2.5V/1.8V In-System Programmable SuperFAST High Density PLDs
LC4128V-5T144C , 3.3V/2.5V/1.8V In-System Programmable SuperFAST High Density PLDs
LC4128V-5TN128C , 3.3V/2.5V/1.8V In-System Programmable SuperFAST High Density PLDs
LC4128V-75T100I , 3.3V/2.5V/1.8V In-System Programmable SuperFAST High Density PLDs
L6932D1.2TR-L6932D1.8TR-L6932D2.5TR
HIGH PERFORMANCE 2A ULDO LINEAR REGULATOR
1/10
L6932February 2003 2V TO 14V INPUT VOLTAGE RANGE 200mΩ Rdson MAX. 200μA QUIESCENT CURRENT AT ANY LOAD EXCELLENT LOAD AND LINE REGULATION 1.8V AND 2.5V FIXED VOLTAGE ADJUSTABLE FROM 1.2V TO 5V (L6932D1.2) 1% VOLTAGE REGULATION ACCURACY SHORT CIRCUIT PROTECTION THERMAL SHUT DOWN SO-8 (4+4) PACKAGE
APPLICATIONS MOTHERBOARDS MOBILE PC HAND-HELD INSTRUMENTS PCMCIA CARDS PROCESSORS I/O CHIPSET AND RAM SUPPLY
DESCRIPTIONThe L6932 Ultra Low Drop Output linear regulator op-
erates from 2V to 14V and is able to support 2A. De-
signed with an internal 50mΩ N-channel
Mosfet, can be usefull for the DC-DC conversion be-
tween 2.5V and 1.8V at 2A in portable applications
reducing the power dissipation.
L6932 is available in 1.8V, 2.5V and adj version from
1.2V and ensure a voltage regulation accuracy of
1%.
The current limit is fixed at 2.5A 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 of a thermal shut down
that limits the internal temperature at 150°C with an
histeresys of 20°C. L6932 provides the Enable and
the Power good functions.
HIGH PERFORMANCE 2A ULDO LINEAR REGULATOR
TYPICAL OPERATING CIRCUIT
L6932 2/10
PIN CONNECTIONS
PIN FUNCTION
ABSOLUTE MAXIMUM RATINGS
THERMAL DATA(*) Measured on Demoboard with about 4 cm2 of dissipating area 2 Oz.
3/10
L6932
BLOCK DIAGRAM (Referred to the Fixed Voltage version)
ELECTRICAL CHARACTERISTCS (Tj = 25°C, VIN = 5V unless otherwise specified) (*) Specification referred to Tj from -25°C to 125°C.
L6932 4/10
Figure 1. Output Voltage vs. Junction
Temperature (L6932D1.2)
Figure 2. Output Voltage vs. Junction
Temperature (L6932D1.8)
Figure 3. Output Voltage vs. Junction
Temperature (L6932D2.5)
Figure 4. Quiescent Current vs. Junction
Temperature
Figure 5. Shutdown Current vs. Junction
Temperature
ELECTRICAL CHARACTERISTCS (continued)
5/10
L6932
APPLICATION INFORMATIONS
APPLICATION CIRCUITIn figure 6 the schematic circuit of the demoboards are shown.
Figure 6. Demoboards Schematic Circuit
COMPONENT LIST
Fixed version
Figure 7. Demoboard Layout (Fixed Version)
L6932 6/10
Adjustable version
Figure 8. Demoboard Layout (Adjustable Version)
COMPONENTS SELECTION
Input CapacitorThe input capacitor value depends on a lot of factors such as load transient requirements, input source (battery
or DC/DC converter) and its distance from the input cap. Usually a 47μF is enough for any application but a
much lower value can be sufficient in many cases.
Output CapacitorThe output capacitor choice depends basically on the load transient requirements.
Tantalum, Speciality Polimer, POSCAP and aluminum capacitors are good and offer very low ESR values.
Multilayer ceramic caps have the lowest ESR and can be required for particular applications. Nevertheless in
several applications they are ok, the loop stability issue has to be considered (see loop stability section).
Below a list of some suggested capacitor manufacturers.
