MAX1981A Maxim Integrated Products, MAX1981A Datasheet - Page 12

• Manufacturer Part Number: MAX1981A
• Description: (MAX1907A / MAX1981A) Quick-PWM Master Controllers
• Manufacturer: Maxim Integrated Products

www.DataSheet4U.com
Quick-PWM Master Controllers for Voltage-
Positioned CPU Core Power Supplies (IMVP-IV)
12
(Circuit of Figure 1, V+ = 12V, V
1.398V
0.748V
0
0
0
0
0
0
0
______________________________________________________________________________________
ENTERING SUSPEND MODE
A. V
B. V
C. MAX1907A/MAX1981A LX, 10V/div
D. MAX1980 LX, 10V/div
DPSLP = GND, I
A. V
B. V
C. I
D. I
80mΩ LOAD
SOFT SHUTDOWN
LM
LS
SUS
OUT
SHDN
OUT
,10A/div
, 10A/div
20μs/div
= 0 to 5V, 5V/div
= 1.398V to 0.748V, 500mV/div
40μs/div
= 0.844V to 0, 1V/div
= 0 to 5V, 5V/div
OUT
= 0.5A
MAX1907A/81A toc28
MAX1907A/81A toc25
CC
= V
DD
C
D
A
B
A
B
C
D
= 5V, B0–B2 set to 1.276V, S0–S2 set to 0.748V.)
1.436V
1.398V
1.398V
0.748V
Typical Operating Characteristics (continued)
0
0
0
0
0
0
ENTERING DEEP-SLEEP MODE
EXITING SUSPEND MODE
A. V
B. V
C. MAX1907A/MAX1981A LX, 10V/div
D. MAX1980 LX, 10V/div
SUS = GND, I
A. V
B. V
C. MAX1907A/MAX1981A LX, 10V/div
D. MAX1980 LX, 10V/div
DPSLP = GND, I
DPSLP
OUT
SUS
OUT
= 1.436V to 1.398V, 50mV/div
= 0 to 5V, 5V/div
= 0.748V to 1.398V, 500mV/div
20μs/div
20μs/div
= 0 to 5V, 5V/div
OUT
OUT
= 1.0A
= 0.5A
MAX1907A/81A toc26
MAX1907A/81A toc29
C
D
C
D
A
B
A
B
1.436V
1.398V
0.844V
10A
0
0
0
0
0
0
EXITING DEEP-SLEEP MODE
(LOWEST FREQUENCY)
A. V
B. V
C. MAX1907A/MAX1981A LX, 10V/div
D. MAX1980 LX, 10V/div
SUS = GND, I
A. I
B. V
C. I
D. I
LOAD TRANSIENT
OUT
LM
LS
DPSLP
OUT
OUT
, 10A/div
, 10A/div
= 0 to 10A, 10A/div
= 1.398V to 1.436V, 50mV/div
= 0.844V (NO LOAD), 50mV/div
20μs/div
20μs/div
= 0 to 5V, 5V/div
OUT
= 1.0A
MAX1907A/81A toc27
MAX1907A/81A toc30
C
D
C
D
A
B
A
B