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E-L6932D1.2

P1-P3P4-P6P7-P9P10-P11
1/11
L6932
December 2005
■ 2V TO 14V INPUT VOLTAGE RANGE
■ 200mΩ Rdson MAX.
■ 200µA QUIESCENT CURRENT AT ANY LOAD
■ EXCELLENT LOAD AND LINE REGULATION
■ 1.5V, 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
DESCRIPTION
The L6932 Ultra Low Drop Output linear regulator
operates from 2V to 14V and is able to support 2A.
Designed with an internal 50mΩ N-channel
Mosfet, can be usefull for the DC-DC conversion
between 2.5V and 1.5V at 2A in portable applica-
tions reducing the power dissipation.
L6932 is available in 1.5V, 1.8V, 2.5V and adj ver-
sion from 1.2V and ensure a voltage regulation ac-
curacy of 1%.
The current limit is fixed at 2.5A to control the cur-
rent in short circuit condition within ±8%. The cur-
rent 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.
SO-8 (4+4)
ORDERING NUMBERS:
L6932D1.2 (SO-8) L6932D1.2TR (T&R)
L6932D1.5 (SO-8) L6932D1.5TR (T&R)
L6932D1.8 (SO-8) L6932D1.8TR (T&R)
L6932D2.5 (SO-8) L6932D2.5TR (T&R)
HIGH PERFORMANCE 2A ULDO LINEAR REGULATOR
TYPICAL OPERATING CIRCUIT
L6932D
PGOOD
EN
GND
IN
V
IN
2V to 14V
V
OUT
1.5V-1.8V-2.5V
C1
C2
1
2
3
4
5,6,7,8
L6932D
ADJ
EN
GND
IN
V
IN
2V to 14V
V
OUT
1.2V to 5V
C1
C2
1
2
4
3
5,6,7,8
R2
R1
OUT
OUT
Rev. 9
L6932
2/11
PIN CONNECTIONS
PIN FUNCTION
ABSOLUTE MAXIMUM RATINGS
THERMAL DATA
(*) Measured on Demoboard with about 4 cm
2
of dissipating area 2 Oz.
N°
L6232D
1.2
L6232D
1.5/1.8/
2.5
Description
1 EN Enables the device if connected to Vin and disables the device if forced to gnd.
2 IN Supply voltage. This pin is connected to the drain of the internal N-mos. Connect this
pin to a capacitor larger than 10
µF.
3
ADJ – Connecting this pin to a voltage divider it is possible to programme the output voltage
between 1.2V and 5V.
– OUT Regulated output voltage. This pin is connected to the source of the internal N-mos.
Connect this pin to a capacitor of 10
µF.
4
OUT – Regulated output voltage. This pin is connected to the source of the internal N-mos.
Connect this pin to a capacitor of 10
µF.
– 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.
5, 6, 7, 8 GND Ground pin.
Symbol Parameter Value Unit
V
in
VIN and Pgood 14.5 V
EN, OUT and ADJ -0.3 to (V
in
+0.3) V
Symbol Parameter Value Unit
R
th J-amb
Thermal Resistance Junction to Ambient 62 (*) °C/W
T
max
Maximum Junction Temperature 150 °C
T
stg
Storage Temperature Range -65 to 150 °C
EN
IN
ADJ
OUT
GND
GND
GND
GND
1
2
3
4
8
7
6
5
L6932D1.2
EN
IN
OUT
PGOOD
GND
GND
GND
GND
1
2
3
4
8
7
6
5
L6932D1.5
L6932D1.8
L6932D2.5
3/11
L6932
BLOCK DIAGRAM
(Referred to the Fixed Voltage version)
ELECTRICAL CHARACTERISTCS
(T
j
= 25°C, V
IN
= 5V unless otherwise specified)
(*) Specification referred to T
j
from -25°C to 125°C.
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
in
Operating Supply Voltage 2 14 V
V
o
Output voltage L6932D1.2 I
o
= 0.1A; V
in
= 3.3V 1.188 1.2 1.212 V
Output voltage L6932D1.5 I
o
= 0.1A; V
in
= 3.3V 1.485 1.5 1.515 V
Output voltage L6932D1.8 I
o
= 0.1A; V
in
= 3.3V 1.782 1.8 1.818 V
Output voltage L6932D2.5 I
o
= 0.1A; V
in
= 3.3V 2.475 2.5 2.525 V
L6932D1.2
Line Regulation
V
in
= 2.5V ±10%; I
o
= 10mA 5 mV
V
in
= 3.3V ±10%; I
o
= 10mA 5 mV
V
in
= 5V ±10%; I
o
= 10mA 5 mV
L6932D1.5
Line Regulation
V
in
= 2.5V ±10%; I
o
= 10mA 5 mV
V
in
= 3.3V ±10%; I
o
= 10mA 5 mV
V
in
= 5V ±10%; I
o
= 10mA 5 mV
L6932D1.8
Line Regulation
V
in
= 2.5V ±10%; I
o
= 10mA 5 mV
V
in
= 3.3V ±10%; I
o
= 10mA 5 mV
V
in
= 5V ±10%; I
o
= 10mA 5 mV
L6932D2.5
Line Regulation
V
in
= 3.3V ±10%; I
o
= 10mA 5 mV
V
in
= 5V ±10%; I
o
= 10mA 5 mV
L6932D1.2 Load Regulation V
in
= 3.3V; 0.1A < I
o
< 2A 15 mV
L6932D1.5 Load Regulation V
in
= 3.3V; 0.1A < I
o
< 2A 15 mV
L6932D1.8 Load Regulation V
in
= 3.3V; 0.1A < I
o
< 2A 15 mV
L6932D2.5 Load Regulation V
in
= 3.3V; 0.1A < I
o
< 2A 15 mV
R
dson
Drain Source ON resistance 200 mΩ
REFERENCE
VREF=1.25V
CURRENT
LIMIT
THERMAL
SENSOR
ENABLEEN
IN
OUT
PG
GND
CHARGE
PUMP
ERROR
AMPL.
DRIVER
VREF
0.9 VREF
+
-
-
+
D99IN1100
P1-P3P4-P6P7-P9P10-P11

E-L6932D1.2

Mfr. #:
Buy E-L6932D1.2
Manufacturer:
STMicroelectronics
Description:
IC REG LINEAR POS ADJ 2A 8SO
Lifecycle:
New from this manufacturer.
Delivery:
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