MAX5954 Maxim Integrated Products, MAX5954 Datasheet - Page 8

• Manufacturer Part Number: MAX5954
• Description: Hot-Plug Controller
• Manufacturer: Maxim Integrated Products

Single PCI Express, Hot-Plug
Controller
(V
FAULT = 10kΩ to 3.3VAUXIN, PWRGD = 10kΩ to 3.3VAUXO, T
Circuit.)
8
12VIN
_______________________________________________________________________________________
= V
12S+
FAULT CONDITION ON 3.3V MAIN OUTPUT
FAULT CONDITION ON AUXILIARY OUTPUT
FAULT CONDITION ON 12V OUTPUT
= 12V, V
t
3.3VAUXIN
FAULT
t
FAULT
t
4ms/div
4ms/div
4ms/div
FAULT
= V
R
STEP TO 1.5Ω
R
STEP TO 0.5Ω
LOAD
LOAD
R
STEP TO 4Ω
3.3S+
LOAD
MAX5954 toc22
MAX5954 toc24
MAX5954 toc26
= V
Typical Operating Characteristics (continued)
12V OUTPUT CURRENT
5A/div
12G
20V/div
12V OUTPUT VOLTAGE
10V/div
FAULT
5V/div
ON
3.3V OUTPUT CURRENT
2A/div
3.3G
10V/div
3.3V OUTPUT VOLTAGE
5V/div
FAULT
5V/div
3.3VAUXO OUTPUT CURRENT
500mA/div
3.3VAUXO OUTPUT VOLTAGE
2V/div
FAULT
2V/div
= V
AUXON
= V
A
INPUT
= +25°C, unless otherwise noted, see the Typical Application
= 3.3V, PRES-DET = GND, FON = PORADJ = TIM = float,
FAULT CONDITION ON AUXILIARY OUTPUT
FAULT CONDITION ON 3.3V OUTPUT
SHORT CIRCUIT ON 12V OUTPUT
(LATCH OPTION MAX5954)
(LATCH OPTION MAX5954)
R
R
100ms/div
LOAD
100ms/div
2ms/div
LOAD
STEP TO 0.5Ω
STEP TO 4Ω
MAX5954 toc27
MAX5954 toc23
MAX5954 toc25
12V OUTPUT CURRENT
5A/div
12G
20V/div
12V OUTPUT VOLTAGE
10V/div
FAULT
5V/div
3.3V OUTPUT CURRENT
2A/div
3.3G
10V/div
3.3V OUTPUT VOLTAGE
5V/div
FAULT
5V/div
3.3VAUXO OUTPUT CURRENT
500mA/div
3.3VAUXO OUTPUT VOLTAGE
2V/div
FAULT
2V/div