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L6932H1.2 |L6932H12STN/a2500avaiHigh Performance 2A ULDO Linear Regulator
L6932H1.2TR |L6932H12TRSTN/a2500avaiHigh Performance 2A ULDO Linear Regulator


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L6932H1.2-L6932H1.2TR
High Performance 2A ULDO Linear Regulator
May 2007 Rev 2 1/13
L6932H1.2

High performance 2A ULDO linear regulator
Features
2V to 14V input voltage range 200mΩ rDS(on) max 200µA quiescent current at any load Excellent load and line regulation Adjustable from 1.2V to 5V 1% voltage regulation accuracy Short circuit protection Thermal shut down HSOP8 package
Applications
Motherboards Mobile PC Hand-held instruments PCMCIA Cards Processors I/O Chipset and RAM supply
Description

The L6932 Ultra Low Drop Output linear regulator
operates from 2V to 14V and is able to support
output current up to 2A. Designed with an internal
50mΩ N-channel Mosfet, it can be used for
onboard DC-DC conversions saving in real
estate, list of components, low noise generation
and power dissipation.
L6932H1.2 is available as adjustable version from
1.2V to 5V with a voltage regulation accuracy of
1%.
The upper 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 with a thermal shut
down that limits the internal temperature at 150°C
with a histeresys of 20°C. L6932H1.2 provides the
Enable and the Power good functions.
Figure 1. Typical operating circuit
Table 1. Device summary
Contents L6932H1.2
2/13
Contents Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Typical electrical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Application informations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6.1 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6.2 Demoboard layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6.3 Component part list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Components selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.1 Input capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.2 Output capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.3 Loop Stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
L6932H1.2 Pin settings
3/13
1 Pin settings
1.1 Pin connection
Figure 2. Pin connection (top view)
1.2 Pin description
Table 2. Pin description
Maximum ratings L6932H1.2
4/13
2 Maximum ratings
2.1 Absolute maximum ratings


2.2 Thermal data


3 Block diagram
Table 3. Absolute maximum ratings
Table 4. Thermal data
Package mounted on board
L6932H1.2 Electrical characteristics
5/13
4 Electrical characteristics
Table 5. Electrical characteristcs (TJ = 25°C, VIN = 5V unless otherwise specified)
Specification referred to T from -25°C to 125°C.
Typical electrical performance L6932H1.2
6/13 Typical electrical performance
Figure 4. Output voltage vs
junction temperature
Figure 5. Quiescent current vs
junction temperature
Figure 6. Shutdown current vs
junction temperature

L6932H1.2 Application information
7/13
6 Application information
6.1 Application circuit
Figure 7. Demoboard application circuit
6.2 Demoboard layout
Figure 8. Demoboard layout
OUT 1.2-------- R1 R2+ ()×=
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