MAX5900 Maxim, MAX5900 Datasheet - Page 9

• Manufacturer Part Number: MAX5900
• Description: -100V SOT23 Simple Swapper Hot-Swap Controllers
• Manufacturer: Maxim

Figure 5. Circuit Board Layout Example
Figure 6. Test Circuits
GROUND
POWER IN
(a) SUPPLY CURRENT
(c) GATE DRIVE VOLTAGE
48V
(e) TURN-ON WAVEFORMS
V
IN
V
IN
+
-
+
-
_______________________________________________________________________________________
-100V SOT23 Simple Swapper Hot-Swap
+
-
SOT-223
V
SOT23-6
100kΩ
M1
V
ON/OFF
100kΩ
U1
V
S D G
EE
MAX5900
MAX5901
GATE
GND
ON/OFF
MAX5900/MAX5901
ON/OFF
V
EE
DRAIN
(PGOOD)
PGOOD
V
MAX5900
MAX5901
POWER
OUT
EE
GATE
GND
MAX5900
MAX5901
GATE
GND
DRAIN
(PGOOD)
PGOOD
50kΩ
(PGOOD)
DRAIN
PGOOD
R
L
V
C
100µF
L
SCOPE
SCOPE
SCOPE
SCOPE
SCOPE
Good thermal contact between the MAX5900/
MAX5901 and the external MOSFET is essential for the
thermal shutdown feature to operate effectively. Place
the MAX5900/MAX5901 as close as possible to the
drain of the external MOSFET, and use wide circuit
board traces for good heat transfer. See Figure 5 for an
example of a PC board layout.
TRANSISTOR COUNT: 678
PROCESS: BiCMOS
(d) RETRY TIMEOUT
(f) CIRCUIT BREAKER EVENT
(b) V
V
IN
UVLO
+
-
48V
48V
V
+
-
+
-
ON/OFF
ON/OFF
ON/OFF
V
EE
V
V
EE
EE
MAX5900
MAX5901
MAX5900A
MAX5901A
MAX5900
MAX5901
GATE
GND
GATE
GATE
GND
50kΩ
GND
50kΩ
DRAIN
(PGOOD)
PGOOD
(PGOOD)
DRAIN
Chip Information
(PGOOD)
DRAIN
PGOOD
PGOOD
Controllers
SCOPE SCOPE
SCOPE
SCOPE
SCOPE
Layout Guidelines
50kΩ
50kΩ
V
9