Typical operating characteristics (continued) – Rainbow Electronics MAX1717 User Manual
Page 8
MAX1717
Dynamically Adjustable, Synchronous
Step-Down Controller for Notebook CPUs
8
_______________________________________________________________________________________
1000
800
600
400
200
0
5
15
10
20
25
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX1717 toc19
INPUT VOLTAGE (V)
SUPPLY CURRENT (
µ
A)
1000kHz VOLTAGE POSITIONED, CIRCUIT 5,
SKIP MODE
I
CC
+ I
DD
I+
40
30
20
10
0
5
15
10
20
25
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX1717 toc20
INPUT VOLTAGE (V)
SUPPLY CURRENT (mA)
300kHz VOLTAGE POSITIONED,
CIRCUIT 2, PWM MODE
I
CC
+ I
DD
I+
40
30
20
10
0
5
15
10
20
25
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX1717 toc21
INPUT VOLTAGE (V)
SUPPLY CURRENT (mA)
550kHz VOLTAGE POSITIONED,
CIRCUIT 3, PWM MODE
I
CC
+ I
DD
I+
40
30
20
10
0
5
15
10
20
25
NO-LOAD SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX1717 toc22
INPUT VOLTAGE (V)
SUPPLY CURRENT (mA)
1000kHz VOLTAGE POSITIONED,
CIRCUIT 5, PWM MODE
I
CC
+ I
DD
I+
B
10
µs/div
LOAD-TRANSIENT RESPONSE
A
MAX1717 toc23
A = V
OUT
, 50mV/div, AC-COUPLED
B = INDUCTOR CURRENT, 10A/div
300kHz STANDARD APPLICATION, CIRCUIT 1,
PWM MODE
B
10
µs/div
LOAD-TRANSIENT RESPONSE
A
MAX1717 toc24
A = V
OUT
, 50mV/div, AC-COUPLED
B = INDUCTOR CURRENT, 10A/div
300kHz VOLTAGE POSITIONED,
CIRCUIT 2, PWM MODE
B
5
µs/div
LOAD-TRANSIENT RESPONSE
A
MAX1717 toc25
A = V
OUT
, 50mV/div, AC-COUPLED
B = INDUCTOR CURRENT, 10A/div
550kHz VOLTAGE POSITIONED, CIRCUIT 3,
PWM MODE
B
4
µs/div
LOAD-TRANSIENT RESPONSE
A
MAX1717 toc26
A = V
OUT
, 50mV/div, AC-COUPLED
B = INDUCTOR CURRENT, 10A/div
1000kHz +5V, CIRCUIT 4, PWM MODE
B
4
µs/div
LOAD-TRANSIENT RESPONSE
A
MAX1717 toc27
A = V
OUT
, 50mV/div, AC-COUPLED
B = INDUCTOR CURRENT, 10A/div
1000kHz VOLTAGE POSITIONED, CIRCUIT 5,
PWM MODE
Typical Operating Characteristics (continued)
(Circuit of Figure 1, components of Table 1, V+ = +12V, V
DD
= V
CC
= SKP/SDN = +5V, V
OUT
= 1.6V, T
A
= +25°C, unless otherwise noted.)