MAX5944ESE+ Maxim Integrated Products, MAX5944ESE+ Datasheet - Page 9

• Manufacturer Part Number: MAX5944ESE+
• Description: IC FW CURR LIMITER DUAL 16-SOIC
• Manufacturer: Maxim Integrated Products

Specifications of MAX5944ESE+

• Applications: FireWire® Apps
• Fet Type: N-Channel
• Number Of Outputs: 2
• Internal Switch(s): No
• Delay Time - Off: 100ns
• Voltage - Supply: 7.5 V ~ 37 V
• Current - Supply: 1.3mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Delay Time - On: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Figure 1. MAX5944 Functional Diagram
BATTERY SOURCE
POWER SOURCE
Dual FireWire Current Limiter and Low-Drop
ONQ1
ONA
ONB
_______________________________________________________________________________________
INA
1.24V
1.24V
INB
6.5V
6.5V
COMPARATOR
COMPARATOR
COMPARATOR
COMPARATOR
MAX5944
UVLO
UVLO
ONA
ONB
INA - 50mV
INA - 75mV
INB - 50mV
INB - 75mV
INA - 5mV
INB - 5mV
0.4V
R
R
SENSEA
SENSEB
FAST CURRENT-LIMIT
FAST CURRENT-LIMIT
CURRENT-LIMIT
CURRENT-LIMIT
COMPARATOR
COMPARATOR
COMPARATOR
COMPARATOR
COMPARATOR
COMPARATOR
OR
OR
SHUTDOWN
SHUTDOWN
MODE
MODE
ORing Switch Controller
SENSEA GATE1A
SENSEB GATE1B
CP1A
CP1B
GATE CHARGE
GATE CHARGE
GATE1A
GATE1B
SENSEA GATE1A
PUMPS
PUMPS
SENSEB GATE1B
DRIVE
DRIVE
CP2A
CP2B
Q1
Q3
GATE2A
GATE2B
Q2
Q4
GATE2A OUTA
GATE2A
GATE2B
GATE2B OUTB
DRIVE
DRIVE
OUTA
OUTB
2.02ms FAULT
AUTORETRY
AUTORETRY
TIMEOUT
TIMEOUT
PERIOD
PERIOD
2.02ms
259ms
259ms
FAULT
x128
x128
FAULTA
GND
FAULTB
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