MAX17000A Maxim Integrated Products, MAX17000A Datasheet - Page 9

• Manufacturer Part Number: MAX17000A
• Description: Complete DDR2 and DDR3 Memory Power-Management Solution
• Manufacturer: Maxim Integrated Products

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PGOOD1
(MAX17000A Circuit of Figure 1, V
STDBY
SHDN
VDDQ
VDDQ
VTTR
TON
VTT
VTT
DL
I
I
DL
LX
LX
LX
SHDN: 5V/div
VDDQ: 500mV/div
VTT: 500mV/div
VTTR: 500mV/div
STDBY: 5V/div
VDDQ: 1V/div
VTT: 1V/div
TON: 1V/div
STANDBY TRANSITION WAVEFORM
STARTUP WAVEFORM
(HEAVY LOAD)
PGOOD1: 2V/div
I
DL: 5V/div
200μs/div
LX
_______________________________________________________________________________________
10μs/div
: 5A/div
DL: 5V/div
LX: 10V/div
I
LX
MAX17000A toc12
R
SKIP = GND
MAX17000A toc09
LOAD
: 2A/div
IN
Complete DDR2 and DDR3 Memory
= 12V, V
= 0.25Ω
PGOOD2
PGOOD1
DD
VDDQ
SHDN
VDDQ
I
VTTR
LOAD
VTT
Typical Operating Characteristics (continued)
I
= V
DL
I
LX
LX
LX
DL: 5V/div
VDDQ: 2V/div
VTT: 1V/div
VTTR: 1V/div
VDDQ: 50mV/div
LX: 10V/div
CC
Power-Management Solution
SMPS LOAD-TRANSIENT RESPONSE
= 5V, SKIP = GND, T
(DISCHARGE MODE ENABLED)
SHUTDOWN WAVEFORM
(PWM MODE)
400μs/div
20μs/div
PGOOD2: 5V/div
PGOOD1: 5V/div
SHDN: 10V/div
I
LX
: 2A/div
A
I
I
LOAD
LX
MAX17000A toc10
MAX17000A toc13
= +25°C, unless otherwise noted.)
: 5A/div
: 5A/div
STDBY
VDDQ
VDDQ
I
LOAD
TON
VTT
I
DL
LX
I
LX
LX
LX
STDBY: 5V/div
VDDQ: 1V/div
VTT: 1V/div
VDDQ: 50mV/div
LX: 10V/div
STANDBY TRANSITION WAVEFORM
SMPS LOAD-TRANSIENT RESPONSE
(SKIP MODE)
100μs/div
20μs/div
I
VTT
TON: 1V/div
DL: 5V/div
LX: 10V/div
I
I
I
LX
LOAD
LX
MAX17000A toc11
MAX17000A toc14
= 50mA
: 2A/div
: 5A/div
: 5A/div
9