Rainbow Electronics MAX5960 User Manual

General Description

The MAX5959/MAX5960 quad hot-plug controllers are
designed for PCI Express

®

(PCIe) applications. These
devices provide hot-plug control for the main 12V, 3.3V,
and 3.3V auxiliary supplies of four PCIe slots. The
MAX5959/MAX5960s’ logic inputs/outputs allow interfac­ing directly with the system hot-plug management con­troller or through an SMBus™ with an external I/O
expander such as the MAX7313. An integrated
debounced attention switch and present-detect signals
simplify system design.

The MAX5959/MAX5960 drive eight external n-channel
MOSFETs to control the 12V and 3.3V main outputs. The

3.3V auxiliary outputs are controlled through 0.2Ω n-chan­nel MOSFETs. Internal charge pumps provide the gate
drive for the 12V outputs while the gate drive of the 3.3V
output is driven by the 12V input supply clamped to 5.5V
above the respective 3.3V main supply rail. The 3.3V aux­iliary outputs are completely independent from the main
outputs with their own charge pumps.

At power-up, the MAX5959/MAX5960 keep all the
MOSFETs off until the supplies rise above their respective
undervoltage lockout (UVLO) thresholds. Upon a turn-on
command, the MAX5959/MAX5960 enhance the external
and internal MOSFETs slowly with a constant gate current
to limit the power-supply inrush current.

The MAX5959/MAX5960 actively limit the current to pro­tect all outputs at all times and shut down if an overcur­rent condition persists longer than the programmable
overcurrent timeout. After an overcurrent or overtempera­ture fault condition, the MAX5959L/MAX5960L latch off
while the MAX5959A/MAX5960A automatically restart
after a restart time delay. The MAX5959/MAX5960 are
offered in latch-off or autorestart versions (see the

Selector Guide

).

The MAX5959/MAX5960 are available in an 80-pin TQFP
package and operate over the -40°C to +85°C tempera­ture range.

Applications

Servers

Desktop Mobile Server Platforms

Workstations

Features

♦ PCIe Compliant

♦ Hot Swap 12V, 3.3V, and 3.3V Auxiliary for 4

PCIe Slots

♦ Integrated Power MOSFETs for Auxiliary Supply

Rails

♦ Controls di/dt and dV/dt

♦ Active Current Limiting Protects Against

Overcurrent/Short-Circuit Conditions

♦ Programmable Current-Limit Timeout
♦ PWRGD Signal Outputs with Programmable

Power-On Reset (POR) (160ms Default)

♦ Latched FAULT Signal Output After Overcurrent

or Overtemperature Fault

♦ Attention Switch Inputs/Outputs with 4ms

Debounce

♦ Present-Detect Inputs

♦ Force-On Inputs Facilitate Testing/Debug

♦ Thermal Shutdown

♦ Allow Control Through SMBus with an I/O

Expander

MAX5959/MAX5960

Quad PCI Express, Hot-Plug Controllers

________________________________________________________________

Maxim Integrated Products

1

Selector Guide

Ordering Information

19-0856; Rev 0; 7/07

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

+

Denotes a lead-free package.

Pin Configuration and Typical Application Circuit appear at
end of data sheet.

EVALUATION KIT

AVAILABLE

PCI Express is a registered trademark of PCI-SIG Corp.
SMBus is a trademark of Intel Corp.

PART LATCH OFF AUTORESTART GUARANTEED AUX CURRENT (mA)

MAX5959AECS+ √ 375
MAX5959LECS+ √ 375
MAX5960AECS+ √ 550
MAX5960LECS+ √ 550

PART TEMP RANGE

MAX5959AECS+ -40°C to +85°C 80 TQFP C80-1

MAX5959LECS+ -40°C to +85°C 80 TQFP C80-1

MAX5960AECS+ -40°C to +85°C 80 TQFP C80-1

MAX5960LECS+ -40°C to +85°C 80 TQFP C80-1

PIN­PACKAGE

PKG

CODE

MAX5959/MAX5960

Quad PCI Express, Hot-Plug Controllers

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(V

12VIN

= V

12S_+

= V

12S_-

= 12V, V

3.3S_+

= V

3.3S_-

= V

3.3AUXIN

= V

ON_

= V

AUXON_

= V

FON_

= 3.3V, PWRGD_ = FAULT_ = PORADJ

= TIM = OUTPUT_ = 12G_ = 3.3G_ = OPEN, INPUT_ = PRES-DET_ = PGND = GND, T

A

= TJ= -40°C to +85°C, unless otherwise

noted. Typical values are at T

A

= TJ= +25°C.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

(All voltages referenced to GND, unless otherwise noted.)

12VIN......................................................................-0.3V to +14V

12G_ ..........................................................-0.3V to (V

12VIN

+ 6V)

12S_+, 12S_-, 3.3G_ ..............................-0.3V to (V

12VIN

+ 0.3V)

3.3VAUXIN, ON_, FAULT_, PWRGD_.......................-0.3V to +6V

PGND ....................................................................-0.3V to +0.3V

All Other Pins ..................................-0.3V to (V

3.3VAUXIN

+ 0.3V)

Continuous Power Dissipation (T

A

= +70°C)

80-Pin TQFP (derate 23.3mW/°C above +70°C).........1860mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

12V SUPPLY (MAIN)

12V Supply Input-Voltage Range V

12V Undervoltage Lockout V

12V Undervoltage Lockout
Deglitch Time

12V Supply Current I

12VIN CONTROL

12VIN Current-Limit Threshold

- V

(V

12S+

12G_ Gate Charge Current I

12G_ Gate Discharge Current I

12G_ Gate High Voltage

- V

(V

12G_

12G_ Threshold Voltage for
PWRGD_ Assertion

12S_- Input Bias Current 1µA

12S_+ Input Bias Current 10 30 µA

3.3V SUPPLY (MAIN)

3.3V Supply Voltage Range V

Undervoltage Lockout (Note 3)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

12VIN

V

rising 9.5 10 10.5

12VIN

Hysteresis 0.1

V

falling below V

12IN

12UVLO

to UVLO

assertion

V

= 13.2V 1 2.5 mA

12VIN

V

= GND 4 5 6 µA

12G_

12S-

12UVLO

t

DEG,UVLO

12VIN

V

)

12ILIM

12G, CHG

Normal turn-off, ON_ = GND,
V

= 2V

12G_

12G_, DIS

Output short-circuit condition, strong
gate pulldown to regulation,
(V

- V

12VIN

12S-

) ≥ 1V, V

, I

12VIN

12S+

V

)

12G, H

V

PGTH12

3.3S_+

I

_ = 1µA 4.8 5.3 5.8 V

12G

Referred to V
(Note 2)

12G_

12G_

= 5V

= 1µA

3.3SA+ rising 2.50 2.65 2.78 V

Hysteresis 30 mV

10.8 12 13.2 V

30 µs

49 54 59 mV

50 150 250 µA

60 120 200 mA

3 4 4.8 V

3.0 3.3 3.6 V

V

MAX5959/MAX5960

Quad PCI Express, Hot-Plug Controllers

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(V

12VIN

= V

12S_+

= V

12S_-

= 12V, V

3.3S_+

= V

3.3S_-

= V

3.3AUXIN

= V

ON_

= V

AUXON_

= V

FON_

= 3.3V, PWRGD_ = FAULT_ = PORADJ

= TIM = OUTPUT_ = 12G_ = 3.3G_ = OPEN, INPUT_ = PRES-DET_ = PGND = GND, T

A

= TJ= -40°C to +85°C, unless otherwise

noted. Typical values are at T

A

= TJ= +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

3.3V CONTROL

3.3V Current-Limit Threshold
(V

3.3S_+

- V

3.3S_-

)

3.3G_ Gate Charge Current I

3.3G_ Gate Discharge Current I

3.3G_ Gate High Voltage
(V

3.3G_

- V

3.3S_+

)

3.3G_ Threshold Voltage for
PWRGD_ Assertion

V

3.3ILIM

3.3G_,CHGV3.3G_

Normal turn-off, ON_ = GND,
V

3.3G_

3.3G_, DIS

Output short-circuit condition, strong
gate pulldown to regulation,
V

3.3S

V

3.3G_H

V

PGTH3.3

I

SOURCE

Referred to V
(Note 2)

17 20 23 mV

= GND 4 5 6 µA

= 2V

50 150 250 µA

90 150 250 mA

_+ - V

3.3S_-

≥ 1V, V

3.3G_

= 5V

= 1µA 4.5 5.5 6.8 V

, I

3.3AUXIN

3.3G_

= 1µA

3 4 4.5 V

3.3S_- Input Bias Current 1µA

3.3S_+ Input Bias Current 20 60 µA

3.3V AUXILIARY SUPPLY

3.3VAUXIN Supply Input Voltage
Range

3.3VAUXIN Undervoltage
Lockout

3.3VAUXIN Supply Current V

3.3VAUXIN to 3.3VAUXO_
Maximum Dropout

3.3VAUXO_ Current-Limit
Threshold

V

3.3AUXIN

V

3.3VAUXUVLO

3.0 3.3 3.6 V

V

3.3VAUXIN

rising 2.50 2.65 2.78 V

Hysteresis 30 mV

3.3VAUXIN

I

3.3VAUXO_

I

3.3VAUXO_

3.3VAUXO_ shorted to
GND

= 3.6V 2.5 5 mA

= 550mA (MAX5960) 280

= 375mA (MAX5959) 225

MAX5959 376 450 564

MAX5960 560 700 850

mV

mA

3.3VAUXO_ Threshold for
PWRGD_ Assertion (V3.3VAUXIN

V

PGTH3.3AUX

(Note 2) 400 mV

- V3.3VAUXO_)

LOGIC SIGNALS

Input-Logic Threshold (ON_,

Rising edge 1.0 2.0 V

FON_, AUXON_, PRES-DET_,
INPUT_)

Input Bias Current (ON_,
AUXON_, INPUT_)

FON_, PRES-DET_ Internal

ON_, AUXON_ High-to-Low
Deglitch Time

Hysteresis 25 mV

1µA

25 50 75 kΩ

4µs

MAX5959/MAX5960

Quad PCI Express, Hot-Plug Controllers

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(V

12VIN

= V

12S_+

= V

12S_-

= 12V, V

3.3S_+

= V

3.3S_-

= V

3.3AUXIN

= V

ON_

= V

AUXON_

= V

FON_

= 3.3V, PWRGD_ = FAULT_ = PORADJ

= TIM = OUTPUT_ = 12G_ = 3.3G_ = OPEN, INPUT_ = PRES-DET_ = PGND = GND, T

A

= TJ= -40°C to +85°C, unless otherwise

noted. Typical values are at T

A

= TJ= +25°C.) (Note 1)

Note 1: All devices are 100% production tested at TA= +25°C. Limits over temperature are guaranteed by design.
Note 2: PWRGD_ asserts a time t

POR_HL

after V

PGTH12

, V

PGTH3.3

, and V

PGTH3.3AUX

conditions are met.

Note 3: The UVLO for the 3.3V supply is sensed at 3.3SA+.
Note 4: This is the time that ON_ or AUXON_ must stay low when resetting a fault condition.

PRES-DET_ High-to-Low
Deglitch Time

PWRGD_ Power-On Reset
Deglitch Time (Note 2)

PWRGD_ Low-to-High Deglitch
Time

PWRGD_, FAULT_ Output Low
Voltage

PWRGD_, FAULT_ Output High
Leakage Current

FAULT_ Timeout t

FAULT_ Timeout During Startup t

Autorestart Delay Time t

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

t

DEG

V

PORADJ

= GND 1 µs

357ms

PORADJ = unconnected 90 160 250

t

POR_HL

t

POR_LH

R

R

R

I

SINK

I

SINK

= 20kΩ 35 55 75

PORADJ

= 100kΩ 145 265 380

PORADJ

= 200kΩ 530

PORADJ

= 2mA 0.1

= 30mA 0.8

PWRGD_, FAULT_ = 5.5V 1 µA

TIM = open 5.5 11 17

R

= 15kΩ 1.4 2.6 3.8

FAULT

SU

RESTART

TIM

R

= 120kΩ 12 22 32

TIM

R

= 300kΩ 53

TIM

ms

4µs

V

ms

2 x

t

FAULT

64 x

t

FAULT

ms

ms

Fault Reset Minimum Pulse Width t

Thermal Shutdown Threshold t

RESET

SD

(Note 4) 100 µs

TJ rising 150

Thermal Shutdown Hysteresis 20

OUT_ Debounce Time t

DBC

OUT_ Voltage High I

SOURCE

= 2mA

2.6 4.4 6.2 ms

V

3.3AUXIN

- 0.3

V

3.3AUXIN

°C

V

MAX5959/MAX5960

Quad PCI Express, Hot-Plug Controllers

_______________________________________________________________________________________

5

Typical Operating Characteristics

(V

12VIN

= V

12S_+

= 12V, V

3.3S_+

= V

3.3S_-

= V

3.3AUXIN

= V

ON_

= V

AUXON_

= V

FON_

= 3.3V, PWRGD_= FAULT_ = PORADJ = TIM =

OUTPUT_ = OPEN, INPUT_ = PRES-DET_ = PGND = GND. See the

Typical Application Circuit

.)

12V INPUT SUPPLY CURRENT

vs. TEMPERATURE

1.10

1.08

1.06

1.04

1.02

1.00

0.98

0.96

0.94

3.3VAUXIN SUPPLY CURRENT (mA)

0.92

0.90

-40 85

TEMPERATURE (°C)

3.3VAUXO_ OUTPUT VOLTAGE
vs. OUTPUT CURRENT

4.0

3.5

3.0

2.5

2.0

1.5

OUTPUT VOLTAGE (V)

1.0

0.5

0

0 1.0

MAX5959 MAX5960

OUTPUT CURRENT (A)

MAX5959 toc01

3.3VAUXIN SUPPLY CURRENT (mA)

603510-15

5.20

5.15

MAX5959 toc04

5.10

5.05

5.00

4.95

4.90

GATE CHARGE CURRENT (μA)

4.85

4.80

0.80.60.40.2 0.90.70.50.30.1

4.75

3.3VAUXIN SUPPLY CURRENT
vs. TEMPERATURE

5.0

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

-40 85

TEMPERATURE (°C)

12G_ AND 3.3G_ GATE CHARGE

CURRENT vs. TEMPERATURE

-40 85

TEMPERATURE (°C)

12G_

3.3G_

ON AND AUXON LOW-TO-HIGH THRESHOLD

VOLTAGE vs. TEMPERATURE

1.60

1.55

MAX5959 toc02

1.50

1.45

1.40

1.35

THRESHOLD VOLTAGE (V)

1.30

1.25

1.20

603510-15

-40 85

ON THRESHOLD

AUXON THRESHOLD

TEMPERATURE (°C)

12G_ AND 3.3G_ GATE DISCHARGE

CURRENT vs. TEMPERATURE

180

175

MAX5959 toc05

170

165

160

GATE DISCHARGE CURRENT (μA)

155

150

603510-15

-40 85

3.3G_

12G_

TEMPERATURE (°C)

MAX5959 toc03

603510-15

MAX5959 toc06

603510-15

3.3VAUX INTERNAL SWITCH

MAXIMUM DROPOUT vs. TEMPERATURE

0.20

0.18

0.16

0.14

0.12

0.10

0.08

0.06

DROPOUT VOLTAGE (V)

0.04

0.02

I

= 550mA

LOAD

MAX5960

I

= 375mA

LOAD

MAX5959

0

-40 85

TEMPERATURE (°C)

12V AND 3.3V CURRENT-LIMIT THRESHOLD

VOLTAGE vs. TEMPERATURE

60

MAX5959 toc07

603510-15

50

40

30

20

10

0

12V AND 3.3V MAIN CURRENT-LIMIT THRESHOLD (mV)

-40 85

12V CURRENT-LIMIT
THRESHOLD

3.3V CURRENT-LIMIT
THRESHOLD

TEMPERATURE (°C)

603510-15

1.00

0.90

MAX5959 toc08

0.80

0.70

0.60

0.50

0.40

0.30

AUXILIARY CURRENT (mA)

0.20

0.10

AUXILIARY CURRENT LIMIT

vs. TEMPERATURE

MAX5960

MAX5959

0

-40 85

TEMPERATURE (°C)

603510-15

MAX5959 toc09

MAX5959/MAX5960

Quad PCI Express, Hot-Plug Controllers

6 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(V

12VIN

= V

12S_+

= 12V, V

3.3S_+

= V

3.3S_-

= V

3.3AUXIN

= V

ON_

= V

AUXON_

= V

FON_

= 3.3V, PWRGD_= FAULT_ = PORADJ = TIM =

OUTPUT_ = OPEN, INPUT_ = PRES-DET_ = PGND = GND. See the

Typical Application Circuit

.)

12V UNDERVOLTAGE LOCKOUT

THRESHOLD vs. TEMPERATURE

MAX5959 toc10

TEMPERATURE (°C)

UVLO THRESHOLD (V)

6035-15 10

9.85

9.90

9.95

10.00

10.05

10.10

10.15

10.20

9.80

-40 85

3.3VAUXON UNDERVOLTAGE LOCKOUT
THRESHOLD vs. TEMPERATURE

MAX5959 toc11

TEMPERATURE (°C)

UVLO THRESHOLD (V)

603510-15

2.54

2.58

2.62

2.66

2.70

2.52

2.56

2.60

2.64

2.68

2.50

-40 85

12V TURN-ON/OFF TIME

MAX5959 toc12

40ms/div

12V OUTPUT
VOLTAGE

12G_

ON_

PWRGD_

10V/div

20V/div

5V/div

5V/div

3.3V TURN-ON/OFF TIME

MAX5959 toc13

40ms/div

3.3V OUTPUT
5V/div

3.3G_
10V/div

ON_
5V/div

PWRGD_
5V/div

3.3V AUXILIARY TURN-ON/OFF TIME

MAX5959 toc14

40ms/div

3.3AUXO_OUTPUT
VOLTAGE
2V/div

AUXON_
2V/div

PWRGD_
2V/div

TURN-ON DELAY 3.3V OUTPUT AND

3.3V AUXILIARY OUTPUT

MAX5959 toc15

4ms/div

5V/div

5V/div

5V/div

5V/div

10V/div

3.3VAUXO_
OUTPUT VOLTAGE

3.3 OUTPUT VOLTAGE

3.3 INPUT,

3.3VAUXIN

3.3G_

PWRGD

FAULT CONDITION ON 12V MAIN OUTPUT

(AUTORESTART OPTION)

MAX5959 toc16

12G_
20V/div

0A

0V

0V

0V

FAULT_
5V/div

12V OUTPUT CURRENT
5A/div

100ms/div

12V OUTPUT VOLTAGE
10V/div

t

RESTART

R

LOAD

STEP TO 1.5Ω

MAX5959/MAX5960

Quad PCI Express, Hot-Plug Controllers

_______________________________________________________________________________________

7

Typical Operating Characteristics (continued)

(V

12VIN

= V

12S_+

= 12V, V

3.3S_+

= V

3.3S_-

= V

3.3AUXIN

= V

ON_

= V

AUXON_

= V

FON_

= 3.3V, PWRGD_= FAULT_ = PORADJ = TIM =

OUTPUT_ = OPEN, INPUT_ = PRES-DET_ = PGND = GND. See the

Typical Application Circuit

.)

FAULT CONDITION ON 3.3V MAIN OUTPUT

(AUTORESTART OPTION)

R

STEP TO 0.5Ω

LOAD

0A

0V

0V

t

0V

RESTART

100ms/div

FAULT CONDITION ON 12V MAIN OUTPUT

(LATCH-OFF OPTION)

R

STEP TO 1.5Ω

LOAD

MAX5959 toc17

MAX5959 toc19

3.3V MAIN OUTPUT CURRENT
2A/div

3.3G_
10V/div

3.3V OUTPUT VOLTAGE
5V/div

FAULT_
5V/div

12V OUTPUT CURRENT
5A/div

FAULT CONDITION ON AUXILIARY OUTPUT

(AUTORESTART OPTION)

FAULT CONDITION ON 12V OUTPUT

R

STEP

LOAD

TO 1.5Ω

R

STEP TO 4Ω

LOAD

t

RESTART

100ms/div

t

FAULT

MAX5959 toc18

MAX5959 toc20

3.3VAUXO_ OUTPUT CURRENT
500mA/div

0A

3.3VAUXO_ OUTPUT VOLTAGE
2V/div
0V

FAULT_
2V/div
0V

12V OUTPUT CURRENT
5A/div

100ms/div

FAULT CONDITION ON 3.3V MAIN OUTPUT

(LATCH-OFF OPTION)

R

STEP TO 0.5Ω

LOAD

40ms/div

MAX5959 toc21

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

4ms/div

FAULT CONDITION ON 3.3V MAIN OUTPUT

R

t

FAULT

STEP TO 0.5Ω

4ms/div

MAX5959 toc22

LOAD

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

MAX5959/MAX5960

Quad PCI Express, Hot-Plug Controllers

8 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(V

12VIN

= V

12S_+

= 12V, V

3.3S_+

= V

3.3S_-

= V

3.3AUXIN

= V

ON_

= V

AUXON_

= V

FON_

= 3.3V, PWRGD_= FAULT_ = PORADJ = TIM =

OUTPUT_ = OPEN, INPUT_ = PRES-DET_ = PGND = GND. See the

Typical Application Circuit

.)

FAULT CONDITION ON AUXILIARY OUTPUT

(LATCH-OFF OPTION)

MAX5959 toc23

FAULT_
2V/div

3.3VAUXO_ OUTPUT CURRENT
500mA/div

100ms/div

3.3VAUXO_ OUTPUT VOLTAGE
2V/div

R

LOAD

STEP TO 3.5Ω

MAX5960

FAULT CONDITION ON AUXILIARY OUTPUT

MAX5959 toc24

FAULT_
2V/div

3.3VAUXO_ OUTPUT CURRENT
500mA/div

10ms/div

3.3VAUXO_ OUTPUT VOLTAGE
2V/div

R

LOAD

STEP TO 3Ω

t

FAULT

MAX5960

SHORT CIRCUIT ON 12V MAIN OUTPUT

MAX5959 toc25

12G_
20V/div

FAULT_
5V/div

12V OUTPUT CURRENT
5A/div

2ms/div

12V OUTPUT VOLTAGE
10V/div

SHORT CIRCUIT ON 12V MAIN OUTPUT

MAX5959 toc26

12G_
20V/div

FAULT_
5V/div

12V OUTPUT CURRENT
10A/div

4μs/div

12V OUTPUT VOLTAGE
10V/div

0V

0V

0V

SHORT CIRCUIT ON 3.3V MAIN OUTPUT

MAX5959 toc27

3.3G_
5V/div

FAULT_
5V/div

3.3V OUTPUT CURRENT
2A/div

2ms/div

3.3V OUTPUT VOLTAGE
5V/div

SHORT CIRCUIT ON 3.3V MAIN OUTPUT

MAX5959 toc28

3.3G_
5V/div

FAULT_
5V/div

3.3V OUTPUT CURRENT
10A/div

2μs/div

3.3V OUTPUT VOLTAGE
5V/div

0V