High-Speed, Digitally Adjusted
Step-Down Controllers for Notebook CPUs
MAX1710/MAX1711
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
BATT
=15V, V
CC
= V
DD
= 5V,
SKIP
= GND,
T
A
= -40°C to +85°C,
unless otherwise noted.) (Note 3)
PARAMETER
PGOOD Trip Threshold
PGOOD Output Low Voltage
PGOOD Leakage Current
CONDITIONS
Measured at FB with respect to unloaded output voltage,
falling edge, hysteresis = 1%
I
SINK
= 1mA
High state, forced to 5.5V
MIN
-8.5
TYP
MAX
-2.5
0.4
1
UNIT
%
V
µA
Note 2:
On-Time and Off-Time specifications are measured from 50% point to 50% point at the DH pin with LX forced to 0V, BST
forced to 5V, and a 250pF capacitor connected from DH to LX. Actual in-circuit times may differ due to MOSFET switching
speeds.
Note 3:
Specifications from -40°C to 0°C are guaranteed but not production tested.
__________________________________________Typical Operating Characteristics
(7A CPU supply circuit of Figure 1, T
A
= +25°C, unless otherwise noted.)
EFFICIENCY vs. LOAD CURRENT
(V
O
= 2.0V, f = 300kHz)
MAX1710-01
EFFICIENCY vs. LOAD CURRENT
(V
O
= 1.6V, f = 300kHz)
MAX1710-02
EFFICIENCY vs. LOAD CURRENT
(V
O
= 1.3V, f = 300kHz)
V
IN
= 4.5V
90
V
IN
= 7V
EFFICIENCY (%)
80
70
V
IN
= 15V
60
V
IN
= 24V
50
40
MAX1710-03
100
V
IN
= 4.5V
90
EFFICIENCY (%)
80
70
60
50
40
0.01
0.1
1
V
IN
= 15V
V
IN
= 24V
100
V
IN
= 4.5V
90
EFFICIENCY (%)
80
70
60
50
40
V
IN
= 24V
V
IN
= 15V
V
IN
= 7V
100
V
IN
= 7V
10
0.01
0.1
1
10
0.01
0.1
1
10
LOAD CURRENT (A)
LOAD CURRENT (A)
LOAD CURRENT (A)
EFFICIENCY vs. LOAD CURRENT
(V
O
= 1.6V, f = 550kHz)
MAX1710-04
FREQUENCY vs. LOAD CURRENT
(V
O
= 1.6V)
MAX1710-05
V
IN
= 4.5V
90
EFFICIENCY (%)
80
70
60
50
40
0.01
0.1
1
V
IN
= 15V
V
IN
= 7V
300
FREQUENCY (kHz)
250
200
150
100
318
316
FREQUENCY (kHz)
314
312
310
308
306
304
V
O
= 1.6V
V
O
= 2.0V
V
IN
= 15V, PWM MODE
V
IN
= 4.5V, SKIP MODE
V
IN
= 15V, SKIP MODE
V
IN
= 24V
50
TON = OPEN
0
10
0.01
0.1
1
10
302
300
0
5
10
15
TON = OPEN
20
25
30
LOAD CURRENT (A)
LOAD CURRENT (A)
INPUT VOLTAGE (V)
_______________________________________________________________________________________
MAX1710-06
100
350
FREQUENCY vs. INPUT VOLTAGE
(I
O
= 7A)
320
5
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
