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參數(shù)資料
| 型號： | ADP1147AR-3.3 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Current-Mode SMPS Controller |
| 中文描述： | SWITCHING CONTROLLER, 250 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大小： | 195K |
| 代理商： | ADP1147AR-3.3 |
–3–
REV. 0
ADP1147-3.3/ADP1147-5
ELECTRICAL CHARACTERISTICS
ADP1147
Min
Parameter
REGULAT ED OUT PUT VOLT AGE
ADP1147-3.3
ADP1147-5
INPUT DC SUPPLY CURRENT
Normal Mode
Sleep Mode (ADP1147-3.3)
Sleep Mode (ADP1147-5)
Shutdown
CURRENT SENSE T HRESHOLD VOLT AGE
ADP1147-3.3
Conditions
V
IN
= 9 V
I
LOAD
= 700 mA
I
LOAD
= 700 mA
V
S
T yp
Max
Units
V
OUT
3.17
4.85
3.33
5.05
3.4
5.2
V
V
4 V < V
IN
< 16 V
4 V < V
IN
< 16 V
5 V < V
IN
< 16 V
V
SHUT DOWN
= 2.1 V, 4 V < V
IN
< 16 V
I
Q
1.6
160
160
10
2.6
280
280
28
mA
μ
A
μ
A
μ
A
V
SENSE
(–) = V
OUT+
100 mV (Forced)
T
A
= +25
°
C
V
SENSE
(–) = V
OUT–
100 mV (
Forced
)
V
SENSE
(–) = V
OUT+
100 mV (
Forced
)
T
A
= +25
°
C
V
SENSE
(–) = V
OUT–
100 mV (
Forced
)
V
5
–V
4
25
150
mV
mV
120
175
ADP1147-5
25
150
0.8
5
mV
mV
V
μ
s
120
0.55
3.8
175
2
6
SHUT DOWN PIN T HRESHOLD
OFF-T IME
V
6
t
OFF
C
T
= 390 pF, I
LOAD
= 700 mA
NOT ES
1
All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods.
Specifications subject to change without notice.
PIN FUNCT ION DE SCRIPT IONS
Pin
No.
1
2
Mnemonic
V
IN
C
T
Function
Input Voltage.
External Capacitor Connection. T his capacitor sets the operating frequency of the device. T he frequency is
also dependent on the input voltage level.
Error Amplifier Decoupling Pin. Pin 3 voltage level causes the comparator current threshold to increase.
T his connects to internal resistive divider, which senses the output voltage. Pin 4 is also the (–) input for the
current comparator.
T his provides the + input to the current comparator. T he offset between Pins 4 and 5 together with R
SENSE
establish the current trip threshold.
When this pin is pulled high, it keeps the MOSFET turned off. When the pin is pulled to ground, the
ADP1147 functions normally. T his pin cannot be left floating.
Independent ground lines must be connected separately to (a) the negative pin of C
OUT
and (b) the cathode
of the Schottky diode and the negative terminal of C
IN
.
Provides high current drive for the MOSFET . Voltage swing is from V
IN
to ground at this pin.
3
4
I
T H
SENSE(–)
5
SENSE(+)
6
SHUT DOWN
7
GND
8
P-DRIVE
(–40
8
C
≤
T
A
≤
+85
8
C
1
, V
IN
= 10 V, unless otherwse noted)
C AUT ION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the ADP1147 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. T herefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
PIN CONFIGURAT IONS
8-Lead Plastic DIP (N-8)
1
2
3
4
8
7
6
5
TOP VIEW
(Not to Scale)
ADP1147
T
JMAX
= 125
8
C,
u
JA
= 110
8
C/W
V
IN
SENSE+
SHUTDOWN
GND
P-DRIVE
C
T
I
TH
SENSE–
8-Lead SOIC (SO-8)
1
2
3
4
8
7
6
5
TOP VIEW
(Not to Scale)
ADP1147
T
JMAX
= 125
8
C,
u
JA
= 150
8
C/W
V
IN
SENSE+
SHUTDOWN
GND
P-DRIVE
C
T
I
TH
SENSE–
WARNNG
ESD SENSITIVE DEVICE
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| ADP1147AR-5 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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