A8183SLU [ALLEGRO]
LOW-DROPOUT, 3 V REGULATOR . HIGH EFFICIENCY; 低压差， 3 V稳压器。高效率
| 型号： | A8183SLU |
| 厂家： | 
ALLEGRO MICROSYSTEMS |
| 描述： | LOW-DROPOUT, 3 V REGULATOR . HIGH EFFICIENCY |
| 文件： | 总8页 (文件大小：110K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
8183
LOW-DROPOUT, 3 V REGULATOR
3 V REGULA-
— HIGH EFFICIENCY
Designed specifically to meet the requirement for extended opera-
tion of battery-powered equipment such as cordless and cellular
telephones, the A8183SLU voltage regulator offers the reduced dropout
voltage and quiescent current essential for maximum battery life.
Applicable also to palmtop computers and personal data assistants, the
device delivers a regulated, continuous 3 V output at up to 75 mA under
normal operating conditions, or to 150 mA (transient) under worst-case
conditions.
TOR
6
4
5
SUB
A PMOS pass element provides a typical dropout voltage of only
90 mV at 60 mA of load current. The low dropout voltage permits
deeper battery discharge before output regulation is lost. Furthermore,
quiescent current does not increase as the dropout voltage is ap-
proached, an ideal feature in standby/resume power systems where
data integrity is crucial. Regulator accuracy and excellent temperature
characteristics are provided by a bandgap reference. An ENABLE input
gives the designer complete control over power up, standby, or power
down.
VR
SUB
1
2
3
This device is supplied in a 6-lead small-outline plastic package
(similar to the SOT-89/TO-243AA) for surface-mount applications. The
A8183SLU is rated for operation over a temperature range of -20°C to
+85°C.
Dwg. PS-021
FEATURES AND BENEFITS
■ High Efficiency Provides Extended Battery Life
■ 90 mV Typical Dropout Voltage at IO = 60 mA
■ 45 µA Typical Quiescent Current at VI = 6 V
Less Than 1 µA “Sleep” Current
ABSOLUTE MAXIMUM RATINGS
Input Voltage, VI . . . . . . . . . . . . . . 10 V
Output Current, IO . . . . . . . . . 150 mA*
Enable Input Voltage, VE . . . . . . . . . . VI
Operating Temperature Range,
■ Up to 150 mA Output Current
■ CMOS-Compatible ON/OFF Control
For Power-Up, Standby, or Shutdown
■ Internal Thermal Protection
TA . . . . . . . . . . . . . -20°C to +85°C
†
Junction Temperature, TJ . . . +150°C
■ Surface-Mount Package
Storage Temperature Range,
TS . . . . . . . . . . . . -40°C to +150°C
APPLICATIONS
* Output current rating is limited by input voltage,
duty cycle, and ambient temperature. Under
any set of conditions, do not exceed a junction
temperature of +150°C. See next page.
■ Cordless and Cellular Telephones
■ Personal Data Assistants
■ Personal Communicators
■ Palmtop Computers
† Fault conditions that produce excessive junction
temperature will activate device thermal
shutdown circuitry. These conditions can be
tolerated but should be avoided.
Always order by complete part number: A8183SLU
.
8183
LOW-DROPOUT,
3 V REGULATOR
FUNCTIONAL BLOCK DIAGRAM
4
6
IN
OUT
ERROR
AMP
DRIVE
BIAS
3
2
SUB
SUB
ENABLE
BANDGAP
REF.
5
1
GND
SUB
Dwg. FS-012-3
Terminal numbering is in accordance with EIA/JEDEC convention.
Where EIAJ conventions apply, the tab is not numbered, resulting in
terminal 6 being designated terminal 5.
For proper operation, terminals 1 and 2 must be externally con-
nected together.
MAXIMUM ALLOWABLE OUTPUT CURRENT with device mounted on 2.24" x 2.24"
(56.9 mm x 56.9 mm) solder-coated copper-clad board in still air.
Maximum Allowable Output Current in Milliamperes with VI = 8 V, TJ = 150°C, Period ≤10 s*
dc (Duty Cycle)
TA
100%
95
90%
105
85
80%
120
95
70%
135
110
85
60%
150
125
100
80
50%
150
150
120
100
40%
150
150
150
125
30%
150
150
150
150
20%
150
150
150
150
25°C
50°C
70°C
85°C
75
60
65
75
50
55
60
70
* IO = (TJ - TA)/([VI - VO] RθJA • dc) = (150 - TA)/(5 • 258 • dc)
Output current rating can be increased (to 150 mA maximum) by heat sinking or reducing the input voltage. Conditions that produce excessive
junction temperature will activate device thermal shutdown circuitry. These conditions can be tolerated but should be avoided.
115 Northeast Cutoff, Box 15036
orcester, Massachusetts 01615-0036 (508) 853-5000
W
Copyright © 1994 Allegro MicroSystems, Inc.
8183
LOW-DROPOUT,
ELECTRICAL CHARACTERISTICS at T = +25°C (unless otherwise n3oteVd)R. EGULA-
A
Limits
Characteristic
Symbol
Test Conditions
Min.
2.95
2.90
2.70
—
Typ.
3.00
3.00
—
Max.
3.05
3.10
—
Units
V
Output Voltage
TOR
VO
4 V ≤ VI ≤ 8 V,
TA = +25°C
10 µA ≤ IO ≤ 100 mA* -20°C ≤ TA ≤ +85°C
VI = 3 V, IO = 60 mA*, -20°C ≤ TA ≤ +85°C
VI = 6 V, IO = 10 mA
V
V
Output Volt. Temp. Coeff.
Line Regulation
αVO
—
±1.0
10
mV/°C
mV
mV
mV
mV
mV
mV
mV
µA
∆VO(∆VI)
6 V ≤ VI ≤ 8 V, IO = 1 mA
—
4.0
9.5
19
4 V ≤ VI ≤ 6 V, IO = 1 mA
—
18
Load Regulation
Dropout Voltage
∆VO(∆IO)
1 mA ≤ IO ≤ 100 mA*, VI = 8 V
1 mA ≤ IO ≤ 100 mA*, VI = 6 V
1 mA ≤ IO ≤ 100 mA*, VI = 4 V
—
30
—
14
25
—
8.0
90
20
VImin - VO IO = 60 mA*
IO = 125 mA*
—
150
300
60
—
190
45
Quiescent Current
IQ
VI = 6 V, 1 mA ≤ IO ≤ 100 mA*, VE ≥ 2.0 V
—
(GND terminal current)
VI = 8 V, 1 mA ≤ IO ≤ 100 mA*, VE ≥ 2.0 V
4 V ≤ VI ≤ 8 V, VE ≤ 0.8 V
—
50
65
µA
IQ(off)
VEH
VEL
IE
—
—
1.0
—
µA
ENABLE Input Voltage
4 V ≤ VI ≤ 8 V,
Output ON
2.0
—
—
V
-20°C ≤ TA ≤ +85°C
Output OFF
—
0.8
±0.1
—
V
ENABLE Input Current
Thermal Shutdown Temp.
Thermal Resistance
TA ≤ +85°C, VE = VI = 8 V
—
—
µA
TJ
150
—
—
°C
RθJA
Mounted on 2.24" x 2.24" solder-coated
copper-clad board in still air
258
—
°C/W
Typical values are at TA = +25°C and are given for circuit design information only.
* Pulse test (≤20 ms). See previous page for duty cycle limitations.
8183
LOW-DROPOUT,
3 V REGULATOR
TYPICAL CHARACTERISTICS
LOAD REGULATION
LINE REGULATION
3.06
3.04
3.02
3.00
2.98
2.96
2.94
2.92
3.06
3.04
3.02
T
= -20°C
A
50 mA INTERVALS
V
= 8 V
I
I
= 0 mA
O
V
= 6 V
= 4 V
I
3.00
2.98
2.96
2.94
2.92
I
= 100 mA
O
V
I
T
= -20°C
A
7.0
2.0
3.0
4.0
5.0
6.0
8.0
125
0
25
50
75
100
150
INPUT VOLTAGE in VOLTS
OUTPUT CURRENT in mA
Dwg. GP-053-3
Dwg. GP-052-3
3.06
3.04
3.02
3.00
2.98
2.96
2.94
2.92
3.06
3.04
3.02
3.00
2.98
2.96
2.94
2.92
T
= 25°C
A
50 mA INTERVALS
I
= 0 mA
V
= 8 V
= 4 V
O
I
I
= 100 mA
O
V
I
T
= 25°C
A
2 V INTERVALS
125
0
25
50
75
100
150
7.0
2.0
3.0
4.0
5.0
6.0
8.0
OUTPUT CURRENT in mA
INPUT VOLTAGE in VOLTS
Dwg. GP-052-4
Dwg. GP-053-4
CAUTION: Maximum allowable duty cycle will be significantly less than 100% at high temperatures, at high input voltages, or at high output currents.
See Maximum Allowable Output Current table.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
8183
LOW-DROPOUT,
TYPICAL CHARACTERISTICS (cont’d)
LOAD REGULATION LINE REGULATION
3 V REGULA-
TOR
3.06
3.06
3.04
3.02
3.00
2.98
2.96
2.94
2.92
T
= 85°C
A
3.04
3.02
3.00
2.98
2.96
2.94
50 mA INTERVALS
V
= 8 V
I
= 0 mA
O
I
I
= 100 mA
O
V = 4 V
I
T
= 85°C
A
2 V INTERVALS
2.92
0
7.0
2.0
3.0
4.0
5.0
6.0
8.0
125
25
50
75
100
150
INPUT VOLTAGE in VOLTS
OUTPUT CURRENT in mA
Dwg. GP-053-5
Dwg. GP-052-5
OUTPUT VOLTAGE
3.5
3.0
2.5
2.0
V
I
= 6 V
I
3.01
= 0
O
3.00
2.99
1.5
1.0
0.5
I
= 0 - 100 mA
O
2.98
T
A
= 25°C
0
0
4.0
1.0
2.0
3.0
-50
0
+50
+100
INPUT VOLTAGE in VOLTS
AMBIENT TEMPERATURE in °C
Dwg. GP-059
Dwg. GP-050-1
CAUTION: Maximum allowable duty cycle will be significantly less than 100% at high temperatures, at high input voltages, or at high output currents.
See Maximum Allowable Output Current table.
8183
LOW-DROPOUT,
3 V REGULATOR
TYPICAL CHARACTERISTICS (cont’d)
QUIESCENT (GROUND TERMINAL) CURRENT
60
I
= 0
O
50
45
50
40
V
I
= 6 V
= 0
I
O
V
≥ 2 V
E
T
= 85°C
A
30
20
40
35
T
= 25°C
A
T
= -20°C
A
10
0
-50
0
+50
+100
8.0
0
2.0
4.0
6.0
AMBIENT TEMPERATURE in °C
INPUT VOLTAGE in VOLTS
Dwg. GP-051-1
Dwg. GP-058
DROPOUT VOLTAGE
0.25
0.20
T
= 85°C
= 25°C
A
T
A
T
= -20°C
A
0.15
0.10
0.05
0
0
25
50
75
100
125
150
OUTPUT CURRENT in mA
Dwg. GP-054-1
CAUTION: Maximum allowable duty cycle will be significantly less than 100% at high temperatures, at high input voltages, or at high output currents.
See Maximum Allowable Output Current table.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
8183
LOW-DROPOUT,
TYPICAL CHARACTERISTICS (concluded)
3 V REGULA-
LOAD TRANSIENT PERFORMANCE
ENABLE TRANSIENT PERFORMANCE
VI = 3.2 V to 6.2 V, CO as specified, TA = 25°C
VI = 3.2 V to 6.2 V, CO = 1 µF, TA = 25°C
TOR
3.25 V
3.0 V
V
3.0 V
O
C
= 10 µF
O
2.75 V
3.5 V
V
O
0
3.0 V
2.5 V
V
<100 µs
O
<150 µs
C
= 1 µF
O
V
I
<50 µs
<600 µs
V
E
100 mA
1 mA
0
I
O
Dwg. WP-027-1
Dwg. WP-028
8183
LOW-DROPOUT,
3 V REGULATOR
Dimensions in Inches
(Based on 1 mm = 0.03937”)
0.173
0.181
0.055
0.063
0.055
0.079
0.019
MAX
0.017
MAX
(5 PL)
6
1
4
3
5
2
0.173
0.181
0.094
0.102
0.084
0.090
0.035
0.021
MIN
MAX
0.059
BSC
0.118
BSC
Dwg. MA-009-6 in
Dimensions in Millimeters
4.4
4.6
1.4
1.6
1.4
1.8
0.49
MAX
0.44
MAX
(5 PL)
6
1
4
3
5
2
4.4
4.6
2.4
2.6
2.13
2.29
0.9
0.54
MIN
MAX
1.5
BSC
3.00
BSC
Dwg. MA-009-6 mm
Allegro MicroSystems, Inc. reserves the right to make, from
time to time, such departures from the detail specifications as may
be required to permit improvements in the design of its products.
Components made under military approvals will be in accordance
with the approval requirements.
NOTES: 1. Lead spacing tolerance is non-cumulative.
2. Exact body and lead configuration at vendor’s option within limits
shown.
The information included herein is believed to be accurate and
reliable. However, Allegro MicroSystems, Inc. assumes no
responsibility for its use; nor for any infringements of patents or
other rights of third parties which may result from its use.
3.Terminal numbering is in accordance with EIA/JEDEC convention.
Where EIAJ conventions apply, the tab is not numbered, resulting
in terminal 6 being designated terminal 5.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
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