ADP3820AR-4.2-REEL Analog Devices Inc, ADP3820AR-4.2-REEL Datasheet - Page 8

• Manufacturer Part Number: ADP3820AR-4.2-REEL
• Manufacturer: Analog Devices Inc
• Type: Battery Chargerr

Specifications of ADP3820AR-4.2-REEL

• Battery Type: Li-Ion
• Output Current: 1mA
• Output Voltage: 4.2V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 15V
• Operating Temp Range: -20C to 85C
• Package Type: SOIC N
• Mounting: Surface Mount
• Pin Count: 8
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Not Compliant

ADP3820
PCB Layout Issues
For optimum voltage regulation, place the load as close as pos-
sible to the device’s V
use dedicated PCB traces to connect the MOSFET’s drain to
the positive terminal and GND to the negative terminal of the
load to avoid voltage drops along the high current carrying PCB
traces.
OUT
and GND pins. It is recommended to
0.051 (1.30)
0.035 (0.90)
0.071 (1.80)
0.059 (1.50)
0.0098 (0.25)
0.0040 (0.10)
0.1574 (4.00)
0.1497 (3.80)
0.006 (0.15)
0.000 (0.00)
PIN 1
PIN 1
SEATING
PLANE
6-Lead Plastic Surface Mount Package
6
1
Dimensions shown in inches and (mm).
0.1968 (5.00)
0.1890 (4.80)
0.0500 (1.27)
8
1
8-Lead Narrow Body Package
0.122 (3.10)
0.106 (2.70)
0.075 (1.90)
OUTLINE DIMENSIONS
BSC
0.0192 (0.49)
0.0138 (0.35)
BSC
5
2
0.020 (0.50)
0.010 (0.25)
RT-6 (SOT-23-6)
5
4
0.2440 (6.20)
0.2284 (5.80)
4
3
0.0688 (1.75)
0.0532 (1.35)
0.037 (0.95) BSC
SO-8
–8–
0.118 (3.00)
0.098 (2.50)
0.057 (1.45)
0.035 (0.90)
SEATING
PLANE
If PCB layout is used as heatsink, adding many vias around the
power FET helps conduct more heat from the FET to the back-
plane of the PCB, thus reducing the maximum FET junction
temperature.
0.0098 (0.25)
0.0075 (0.19)
0.009 (0.23)
0.003 (0.08)
8
0
0.0196 (0.50)
0.0099 (0.25)
0.0500 (1.27)
0.0160 (0.41)
10
0
0.022 (0.55)
0.014 (0.35)
45
REV. A