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參數資料
| 型號： | ADP3171JR |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 穩壓器 |
| 英文描述： | Charger front end protection IC with 30V max Vin and 4.5V LDO output 8-WSON 0 to 125 |
| 中文描述： | SWITCHING CONTROLLER, PDSO14 |
| 封裝： | SOIC-14 |
| 文件頁數： | 3/12頁 |
| 文件大?。?/td> | 310K |
| 代理商： | ADP3171JR |
REV. 0
ADP3171
–3–
CAUTION
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
ADP3171 features proprietary ESD protection circuitry, permanent damage may occur on devices
subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended
to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
ABSOLUTE MAXIMUM RATINGS
*
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +15 V
DRVH, DRVL, LRDRV1, LRDRV2 . . . . . . –0.3 V to VCC + 0.3 V
All Other Inputs and Outputs . . . . . . . . . . . . –0.3 V to +10 V
Operating Ambient Temperature Range . . . . . . . 0
°
C to 70
°
C
Operating Junction Temperature . . . . . . . . . . . . . . . . . . 125
°
C
Storage Temperature Range . . . . . . . . . . . . –65
°
C to +150
°
C
JA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
°
C/W
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . 300
°
C
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
°
C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
°
C
*
This is a stress rating only; operation beyond these limits can cause the device to
be permanently damaged. Unless otherwise specified, all voltages are referenced
to GND.
PIN CONFIGURATION
TOP VIEW
(Not to Scale)
14
1
5
PWRGD
LRFB1
LRDRV1
FB
CS–
CS+
DRVH
DRVL
VCC
LRFB2
LRDRV2
COMP
CT
GND
ADP3171
3
2
4
7
13
12
11
10
9
8
6
PIN FUNCTION DESCRIPTIONS
Pin
Mnemonic Function
1
2
3, 11
LRFB1,
LRFB2
4, 10
LRDRV1,
LRDRV2
5
FB
6
CS–
7
CS+
GND
PWRGD
Ground Reference. GND should have a low impedance path to the source of the synchronous MOSFET.
Power Good Indicator. Open-drain output that signals when the output voltage is in the proper operating range.
Feedback connections for the fixed output voltage linear regulator controllers.
Gate drives for the respective linear regulator N-channel MOSFETs.
Feedback Input. Error amplifier input for remote sensing of the output voltage.
Current Sense Negative Node. Negative input for the current comparator.
Current Sense Positive Node. Positive input for the current comparator. The output current is sensed as a voltage
at this pin with respect to CS–.
Timing Capacitor. An external capacitor connected from CT to ground sets the off time of the device.
Error Amplifier Output and Compensation Point. The voltage at this output programs the output current control
level between CS+ and CS–.
Supply Voltage for the ADP3171.
Low-Side MOSFET Drive. Gate drive for the synchronous rectifier N-channel MOSFET. The voltage at DRVL
swings from GND to VCC.
High-Side MOSFET Drive. Gate drive for the buck switch N-channel MOSFET. The voltage at DRVH swings
from GND to VCC.
8
9
CT
COMP
12
13
VCC
DRVL
14
DRVH
ORDERING GUIDE
Model
Temperature Range
Package Option
ADP3171JR
0oC to 70oC
SO-14
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