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DROPOUT REGULATORS. APU8831 Datasheet

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DROPOUT REGULATORS. APU8831 Datasheet






APU8831 REGULATORS. Datasheet pdf. Equivalent




APU8831 REGULATORS. Datasheet pdf. Equivalent





Part

APU8831

Description

300mA ULTRA LOW DROPOUT REGULATORS



Feature


Technology Licensed from International R ectifier APU8831 300mA ULTRA LOW DROPO UT REGULATORS FEATURES 5-PIN SOT-23 Pa ckage Stable with 2.2mF Ceramic Capacit or 2% Voltage Reference Accuracy Only 2 70mV Dropout at 300mA and 170mV Dropout at 150mA 5mA Quiescent Current in Shut down Current Limit and Thermal Shutdown Logic Input Enable Pin RoHS Compliant APPLICATIONS Lapto.
Manufacture

Advanced Power Electronics

Datasheet
Download APU8831 Datasheet


Advanced Power Electronics APU8831

APU8831; p, Notebook & Palmtop computers Battery Powered Equipments PCMCIA Vcc & Vpp Reg ulator Consumer Electronics High Effici ency Linear Power Supplies TYPICAL APPL ICATION DESCRIPTION The APU8831 device is an efficient linear voltage regulat or with better than 2% initial voltage accuracy, very low dropout voltage and very low ground current designed especi ally for hand held.


Advanced Power Electronics APU8831

, battery powered applications. Other fe atures of the device are: TTL compatibl e enable/ shutdown control input, curre nt limiting and thermal shutdown. The A PU8831 is available in fixed and adjust able output voltage versions in a small SOT-23 5-Pin package. VIN C1 2.2uF SD Enable 3 VIN VOUT 4 2 Gnd 1 En Ad j 5 VOUT ( )R1 C2 Vo = 1.253 1+ R 1 R2 2.2uF R2 F.


Advanced Power Electronics APU8831

igure 1 - Typical application of the APU 8831 ajustable voltage regulator. PACK AGE ORDER INFORMATION TJ (°C) 0 To 12 5 5-PIN SOT-23 APU8831Y5 OUTPUT VOLTA GE Adj Data and specifications subject to change without notice. 1 200712251 APU8831 ABSOLUTE MAXIMUM RATINGS Inpu t Voltage (VIN) ....................... .............................. 10V Enab le Input Voltage ...

Part

APU8831

Description

300mA ULTRA LOW DROPOUT REGULATORS



Feature


Technology Licensed from International R ectifier APU8831 300mA ULTRA LOW DROPO UT REGULATORS FEATURES 5-PIN SOT-23 Pa ckage Stable with 2.2mF Ceramic Capacit or 2% Voltage Reference Accuracy Only 2 70mV Dropout at 300mA and 170mV Dropout at 150mA 5mA Quiescent Current in Shut down Current Limit and Thermal Shutdown Logic Input Enable Pin RoHS Compliant APPLICATIONS Lapto.
Manufacture

Advanced Power Electronics

Datasheet
Download APU8831 Datasheet




 APU8831
Technology Licensed from International Rectifier
APU8831
300mA ULTRA LOW DROPOUT REGULATORS
FEATURES
5-PIN SOT-23 Package
Stable with 2.2mF Ceramic Capacitor
2% Voltage Reference Accuracy
Only 270mV Dropout at 300mA
and 170mV Dropout at 150mA
5mA Quiescent Current in Shutdown
Current Limit and Thermal Shutdown
Logic Input Enable Pin
RoHS Compliant
APPLICATIONS
Laptop, Notebook & Palmtop computers
Battery Powered Equipments
PCMCIA Vcc & Vpp Regulator
Consumer Electronics
High Efficiency Linear Power Supplies
TYPICAL APPLICATION
DESCRIPTION
The APU8831 device is an efficient linear voltage regula-
tor with better than 2% initial voltage accuracy, very low
dropout voltage and very low ground current designed
especially for hand held, battery powered applications.
Other features of the device are: TTL compatible enable/
shutdown control input, current limiting and thermal shut-
down.
The APU8831 is available in fixed and adjustable output
voltage versions in a small SOT-23 5-Pin package.
VIN
C1
2.2uF
SD Enable
3 VIN
VOUT 4
2 Gnd
1 En
Adj 5
VOUT
( )R1
C2
Vo = 1.253
1+
R1
R2
2.2uF
R2
Figure 1 - Typical application of the APU8831 ajustable voltage regulator.
PACKAGE ORDER INFORMATION
TJ (°C)
0 To 125
5-PIN
SOT-23
APU8831Y5
OUTPUT
VOLTAGE
Adj
Data and specifications subject to change without notice.
1
200712251




 APU8831
APU8831
ABSOLUTE MAXIMUM RATINGS
Input Voltage (VIN) ..................................................... 10V
Enable Input Voltage ................................................. 10V
Storage Temperature Range ....................................... -65°C To 150°C
Operating Junction Temperature Range ...................... 0°C To 150°C
PACKAGE INFORMATION
5-PIN SOT-23 (Y5)
VIN Gnd En
321
4
VOUT
5
Adj
uJA=2568C/W
ELECTRICAL SPECIFICATIONS
Unless otherwise specified, these specifications apply over CIN=Co=22mF, Io=100mA, VIN(MIN)=2.5V(Adjustable
devices) VIN=Vo + 1V(for fixed voltage devices), VOUT=VFB(for adjustable version only), CBYP=470pF(for fixed voltage devices),
VENB=2V and TA=258C. Typical values refer to TA=258C. Low duty cycle pulse testing is used which keeps junction and
case temperatures equal to the ambient temperature.
PARAMETER
Reference Voltage
(See Table 1 for typical values)
Line Regulation
Load Regulation (Note 1)
Dropout Voltage (Note 2)
Ground Current (Note 3)
Ground Current-SD Activated
Current Limit
Thermal Regulation
Adjust Pin Current
Enable Pin Input LO Voltage
Enable Pin Input HI Voltage
Enable Pin Input LO Current
Enable Pin Input HI Current
SYM
Vo
TEST CONDITION
DVI
DVL
DVI(O)
IQ
IQ(SD)
ICL
DVP
IADJ
VEN(L)
VEN(H)
Vo + 1V<VIN<10V
1mA<Io<100mA
100mA<Io<300mA
Io=100mA
Io=100mA (Note 4)
Io=50mA
Io=50mA (Note 4)
Io=150mA
Io=150mA (Note 4)
Io=300mA
Io=300mA (Note 4)
VEN=2V, Io=100mA
Io=100mA (Note 4)
Io=50mA
Io=50mA (Note 4)
Io=150mA
Io=150mA (Note 4)
Io=300mA
Io=300mA (Note 4)
VEN=0V to 0.8V or Open
Vo=0V
VIN=10V, Io=150mA, 10ms Pulse
VIN=2.5V, Vo=VADJ
Regulator OFF
Regulator ON
VEN(L)=0V to 0.8V
VEN(H)=2V to VIN
MIN TYP MAX UNITS
%
-2 2
0.005
%/V
0.8 %
0.1
10 50 mV
13 70
85 110
100 140
170 220
204 260
270 350
324 400
120 160 mA
240
420 600
540
2200 2900
2900
7200 9500
9300
5 mA
320 420
mA
0.05 %/W
0.1 mA
0.8 V
2V
0.01 mA
20 mA
2




 APU8831
APU8831
Note 1: Low duty cycle pulse testing with Kelvin con-
nections is required in order to maintain accurate data.
Note 2: Dropout voltage is defined as the minimum dif-
ferential voltage between VIN and VOUT required to main-
tain regulation at VOUT. It is measured when the output
voltage drops 1% below its nominal value.
Note 3: Ground current is the regulator quiescent cur-
rent plus the pass transistor current. The total current
from the supply is the sum of the load current plus the
ground pin current.
PIN DESCRIPTIONS
PIN # PIN SYMBOL
3 VIN
PIN DESCRIPTION
The input pin of the regulator. Typically a large storage capacitor is connected from
this pin to ground to insure that the input voltage does not sag below the minimum
drop out voltage during the load transient response. This pin must always be higher
than VOUT by at least the amount of the dropout voltage and some margin in order for
the device to regulate properly.
2 Gnd Ground pin. This pin must be connected to the lowest potential in the system and all
other pins must be at higher potential with respect to this pin.
1 En Enable pin. A low signal or left open on this pin shuts down the output. This pin must
be tied HI or to VIN for normal operation.
A resistor divider from this pin to the VOUT pin and ground sets the output voltage. To
5 Adj minimize the error due to the error amplifier, select the values of the resistor dividers
to be less than 10KV.
4
VOUT
The output of the regulator. A minimum of 2.2mF with max ESR of 1V capacitor must
be connected from this pin to ground to insure stability.
5-PIN
SOT-23
APU8831
Output
Voltage
1.25V
Table 1- Nominal output voltage vs. part number.
The output voltage of the adjustable device can be set
using:
( )Vo = 1.253
1+
R1
R2
Where:
R1 = Resistor connected from output to the Adj pin
R2 = Resistor connected from Adj pin to Gnd
3






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