參數(shù)資料
型號： MAX1712
廠商： Maxim Integrated Products, Inc.
英文描述： High-Speed, Digitally Adjusted Step-Down Controllers for Notebook CPUs
中文描述： 高速、數(shù)字可調(diào)、降壓型控制器，用于筆記本電腦
文件頁數(shù)： 5/28頁
文件大?。?/td> 437K
代理商： MAX1712
M
High-Speed, Digitally Adjusted
Step-Down Controllers for Notebook CPUs
_______________________________________________________________________________________
5
40
60
50
80
70
90
100
0.01
0.1
LOAD CURRENT (A)
1
10
EFFICIENCY vs. LOAD CURRENT
(V
O
= 2.0V, f = 300kHz)
M
E
V
IN
= 4.5V
V
IN
= 7V
V
IN
= 15V
V
IN
= 24V
40
60
50
80
70
90
100
0.01
0.1
LOAD CURRENT (A)
1
10
EFFICIENCY vs. LOAD CURRENT
(V
O
= 1.6V, f = 300kHz)
M
E
V
IN
= 4.5V
V
IN
= 24V
V
IN
= 7V
V
IN
= 15V
40
60
50
80
70
90
100
0.01
0.1
LOAD CURRENT (A)
1
10
EFFICIENCY vs. LOAD CURRENT
(V
O
= 1.3V, f = 300kHz)
M
E
V
IN
= 4.5V
V
IN
= 24V
V
IN
= 15V
V
IN
= 7V
40
60
50
80
70
90
100
0.01
0.1
LOAD CURRENT (A)
1
10
EFFICIENCY vs. LOAD CURRENT
(V
O
= 1.6V, f = 550kHz)
M
E
V
IN
= 4.5V
V
IN
= 15V
V
IN
= 7V
V
IN
= 24V
0
100
50
200
150
300
250
350
0.01
0.1
LOAD CURRENT (A)
1
10
FREQUENCY vs. LOAD CURRENT
(V
O
= 1.6V)
M
F
V
IN
= 15V, PWM MODE
V
IN
= 4.5V, SKIP MODE
V
IN
= 15V, SKIP MODE
TON = OPEN
300
306
304
302
308
310
312
314
316
318
320
0
10
INPUT VOLTAGE (V)
5
15
20
25
30
FREQUENCY vs. INPUT VOLTAGE
(I
O
= 7A)
M
F
V
O
= 2.0V
V
O
= 1.6V
TON = OPEN
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.)
CONDITIONS
Measured at FB with respect to unloaded output voltage,
falling edge, hysteresis = 1%
%
-8.5
-2.5
PGOOD Trip Threshold
I
SINK
= 1mA
High state, forced to 5.5V
V
0.4
1
PGOOD Output Low Voltage
PGOOD Leakage Current
μA
UNIT
MIN
TYP
MAX
PARAMETER
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)
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