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參數(shù)資料
| 型號： | A8188SL |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | LOW-DROPOUT REGULATORS . HIGH EFFICIENCY |
| 中文描述： | 低壓差穩(wěn)壓器。高效 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 163K |
| 代理商： | A8188SL |
DSCONTNUEDPRODUCT
APPLICATIONS
I
Cordless and Cellular Telephones
I
Personal Data Assistants
I
Personal Communicators
I
Palmtop Computers
junction temperature will activate device
thermal shutdown circuitry. These condi-
tions can be tolerated but should be
avoided.
—FORREFERENCEONLY
See following pages.
8188
Designed specifically to meet the requirement for extended opera-
tion of battery-powered equipment such as cordless and cellular tele-
phones, the A8188S— voltage regulators offer the reduced dropout
voltage and quiescent current essential for maximum battery life.
these devices deliver a regulated output at up to 250 mA (transient),
which is limited only by package power dissipation. Regulated output
voltages between 2.5 V and 3.3 V are trimmed at wafer probe.
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. Quiescent
current does not increase significantly 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. The A8188SL-xx
includes ENABLE inputs to give the designer complete control over
power up, standby, or power down.
These devices are supplied, without the ENABLE function, in a
standard 3-lead SOT-89/TO-243AA small-outline plastic transistor
package (suffix ‘LT’). Dual regulators (A8188SL-xx) are provided in
an 8-lead SOIC package. All devices are rated for operation over a
temperature range of -20
°
C to +85
°
C.
FEATURES AND BENEFITS
I
High Efficiency Provides Extended Battery Life
I
90 mV Typical Dropout Voltage at I
O
= 60 mA
I
55
μ
A Typical Quiescent Current
Less Than 1
μ
A “Sleep” Current
I
250 mA Peak Output Current
I
Improved PSRR and Transient Performance
I
Internal Thermal Protection
LOW-DROPOUT REGULATORS
— HIGH EFFICIENCY
Always order by complete part number, e.g.,
A8188SLT-30
.
A8188SLT-xx
PRELIMINARY INFORMATION
(subject to change without notice)
July 13, 1999
Dwg. PS-022-2
VR
2
3
1
G
I
where “-xx” is the required output voltage in tenths
D
2
ABSOLUTE MAXIMUM RATINGS
Input Voltage, V
I
. . . . . . . . . . . . . .
10 V
Peak Output Current,
I
OM
. . . . . . . . . . . . . . . . . .
250 mA*
Enable Input Voltage, V
E
. . . . . . . . .
V
I
Operating Temperature Range,
T
A
. . . . . . . . . . . . .
-20
°
C to +85
°
C
Junction Temperature, T
J
. . . .
+150
°
C
Storage Temperature Range,
T
S
. . . . . . . . . . . .
-40
°
C to +150
°
C
* Output current rating is limited by input
voltage, duty cycle, and ambient tempera-
ture. Under any set of conditions, do not
exceed a junction temperature of +150
°
C.
Fault conditions that produce excessive
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| A8188SLT | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:LOW-DROPOUT REGULATORS . HIGH EFFICIENCY |
| A8188SLT-XX | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:LOW-DROPOUT REGULATORS - HIGH EFFICIENCY |
| A8188SL-XX | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:LOW-DROPOUT REGULATORS - HIGH EFFICIENCY |
| A81895-000 | 制造商:TE Connectivity 功能描述:55PC6239-20-2/6-9CS2502 - Cable Rools/Shrink Tubing |
| A81917-000 | 制造商:TE Connectivity 功能描述:VARISTOR 120V 14MM RADIAL T/R 制造商:TE Connectivity 功能描述:VARISTOR 120V 6KA DISC 14MM |
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