MAX5954 Maxim Integrated Products, MAX5954 Datasheet - Page 7

• 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.)
12VIN
= V
12S+
FAULT CONDITION ON AUXILIARY OUTPUT
(AUTORESTART OPTION MAX5954A)
FAULT CONDITION ON 12V OUTPUT
(AUTORESTART OPTION MAX5954A)
3.3V INPUT/3.3V AUXILIARY INPUT
= 12V, V
_______________________________________________________________________________________
3.3VAUXIN
POWER-UP
R
100ms/div
R
100ms/div
LOAD
100ms/div
t
LOAD
RESTART
t
RESTART
STEP TO 1.5Ω
STEP TO 4Ω
= V
3.3S+
MAX5954 toc18
MAX5954 toc16
MAX5954 toc20
= V
12V OUTPUT CURRENT
5A/div
12G
20V/div
12V OUTPUT VOLTAGE
10V/div
FAULT
5V/div
Typical Operating Characteristics (continued)
3.3G
10V/div
3.3V OUTPUT
5V/div
3.3S+
5V/div
3.3VAUXO
5V/div
PWRGD
5V/div
3.3VAUXO OUTPUT CURRENT
500mA/div
3.3VAUXO OUTPUT VOLTAGE
2V/div
FAULT
2V/div
ON
= V
AUXON
= V
A
INPUT
10V/div
= +25°C, unless otherwise noted, see the Typical Application
5V/div
5V/div
5V/div
5V/div
= 3.3V, PRES-DET = GND, FON = PORADJ = TIM = float,
(AUTORESTART OPTION MAX5954A)
TURN-ON DELAY 3.3V OUTPUT AND
FAULT CONDITION ON 3.3V OUTPUT
FAULT CONDITION ON 12V OUTPUT
(LATCH OPTION MAX5954L)
3.3V AUXILIARY OUTPUT
R
R
100ms/div
LOAD
100ms/div
LOAD
4ms/div
t
RESTART
STEP TO 1.5Ω
STEP TO 0.5Ω
MAX5954 toc21
MAX5954 toc17
MAX5954 toc19
3.3VAUXO
OUTPUT VOLTAGE
3.3 INPUT,
3.3VAUXIN
3.3 VOLTAGE
PWRGD
3.3G
12V OUTPUT CURRENT
5A/div
12G
20V/div
12V OUTPUT VOLTAGE
10V/div
FAULT
5V/div
3.3V MAIN OUTPUT CURRENT
2A/div
3.3G
10V/div
3.3V OUTPUT VOLTAGE
5V/div
FAULT
5V/div
7