MAX845ESA+T Maxim Integrated Products, MAX845ESA+T Datasheet - Page 15

• Manufacturer Part Number: MAX845ESA+T
• Description: IC DRVR TRANSF ISO 8-SOIC
• Manufacturer: Maxim Integrated Products

Specifications of MAX845ESA+T

• Applications: Transformer Driver, PCMCIA
• Voltage - Input: 3.3V, 5V
• Number Of Outputs: 1
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Supply Voltage (max): 5 V
• Supply Voltage (min): 3.3 V
• Supply Current: 1.1 mA
• Maximum Power Dissipation: 471 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Supply Voltage: 5V
• Digital Ic Case Style: SOIC
• No. Of Pins: 8
• No. Of Regulated Outputs: 2
• Operating Temperature Range: -40°C To +85°C
• Supply Voltage Range: 2.5V To 6V
• Termination Type: SMD
• Rohs Compliant: Yes
• Filter Terminals: SMD
• Leaded Process Compatible: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Table 2. Rectifier Topology Trade-Offs
2-Diode
Push/Pull
(Figure 11a)
4-Diode
Bridge
(Figure 11b)
Voltage
Doubler
(Figure 11c)
TOPOLOGY
• Only 3 external
• Low output ripple
• Single diode drop
• Simpler transformer
• Low output ripple
• Fewest turns on
winding requirements
components
transformer
______________________________________________________________________________________
ADVANTAGE
• More turns on
• 5 external
• Higher cost
• 2 diode drops
• 4 external
• Higher output
• 2 diode drops
DISADVANTAGE
transformer
components
components
ripple
Isolated Transformer Driver
for PCMCIA Applications
Table 3. Suggested Capacitor Suppliers
SUBSTRATE CONNECTED TO V
TRANSISTOR COUNT: 31
___________________Chip Topography
Low-ESR 267 Series
Ceramic
Very Low-ESR 595D/293D
Series
GND1
SD
FS
CAPACITOR
D1
(1.4732mm)
0.058"
Matsuo
USA Phone: [phone]
FAX: [phone]
Murata Erie
USA Phone: [phone]
FAX: [phone]
Sprague Electric Co.
USA Phone: [phone]
FAX: [phone]
D2
CC
SUPPLIER
GND2
V
(2.159mm)
CC
0.085"
15