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L6932H1.2TR

P1-P3P4-P6P7-P9P10-P12P13-P13
May 2007 Rev 2 1/13
13
L6932H1.2
High performance 2A ULDO linear regulator
Features
■ 2V to 14V input voltage range
■ 200mΩ r
DS(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
.
HSO-8
www.st.com
Figure 1. Typical operating circuit
L6932H1.2
R1
R2
R3
C1
C2
Vout=1.2V to 5V
Vin=2V to 14V
1
2
3
4
5
6
7
8
EN
Vin Vout
PGOOD
FB
GND
NC2NC1
L6932H1.2
R1
R2
R3
C1
C2
Vout=1.2V to 5V
Vin=2V to 14V
1
2
3
4
5
6
7
8
EN
Vin Vout
PGOOD
FB
GND
NC2NC1
Table 1. Device summary
Part number Package Packaging
L6932H1.2 HSO-8 Tube
L6932H1.2TR HSO-8 Tape and reel
Contents L6932H1.2
2/13
Contents
1 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5 Typical electrical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
6 Application informations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6.1 Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6.2 Demoboard layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6.3 Component part list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7 Components selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.1 Input capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.2 Output capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.3 Loop Stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
9 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
1
2
3
4
5
6
7
8
EN
Vin
FB
PGOOD
Vout
GND
NC1
NC2
1
2
3
4
5
6
7
8
EN
Vin
FB
PGOOD
Vout
GND
NC1
NC2
Table 2. Pin description
Name Pin N° Description
1 EN Enables the device when connected to Vin and disables it when forced to GND.
2 VIN
Supply voltage. This pin is connected to the drain of the internal N-mos.
Connect this pin to a capacitor larger than 10µF.
3FB
Connecting this pin to a voltage divider it is possible to program the output
voltage between 1.2V and 5V.
4VOUT
Regulated output voltage. This pin is connected to the source of the internal N-
mos. Connect this pin to a capacitor of 10µF.
5 PGOOD
Power good output. The pin is open drain and detects the output voltage. It is
forced low if the output voltage is lower than 90% of the programmed voltage.
6 GND Ground pin
7, 8
NC1-
NC2
Internally not connected.
P1-P3P4-P6P7-P9P10-P12P13-P13

L6932H1.2TR

Mfr. #:
Buy L6932H1.2TR
Manufacturer:
STMicroelectronics
Description:
LDO Voltage Regulators Hi performance 2A ULDO Linear Reg
Lifecycle:
New from this manufacturer.
Delivery:
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