MAX1714(1999) 데이터 시트보기 (PDF) - Maxim Integrated
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MAX1714 Datasheet PDF : 24 Pages
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High-Speed Step-Down Controller
for Notebook Computers
_____________________________Typical Operating Characteristics (continued)
(Circuit of Figure 1, components from Table 1, VIN = +15V, SKIP = AGND, TON = unconnected, TA = +25°C, unless otherwise noted.)
FREQUENCY vs. LOAD CURRENT
(4A COMPONENTS, VOUT = 2.5V)
350
VIN = 7V, 15V, PWM MODE
300
250
VIN = 7V
200
SKIP MODE
150
100
VIN = 15V
SKIP MODE
50
FREQUENCY vs. INPUT VOLTAGE
(4A COMPONENTS, VOUT = 2.5V, IOUT = 1A)
320
310
300
290
FREQUENCY vs. TEMPERATURE
(4A COMPONENTS, VOUT = 2.5V)
330
325
IOUT = 4A
320
315
310
305
IOUT = 1A
0
0.01
0.1
1
10
LOAD CURRENT (A)
IOUT AT CURRENT LIMIT vs.
TEMPERATURE
(4A COMPONENTS, VOUT = 2.5V)
12
10
8
6
VILIM = 1V
4
VILIM = 0.5V
2
0
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
280
0
5 10 15 20 25 30
INPUT VOLTAGE (V)
CONTINUOUS TO DISCONTINUOUS INDUCTOR
CURRENT POINT vs. INPUT VOLTAGE
(4A COMPONENTS, VOUT = 2.5V)
700
600
500
400
300
200
100
0
0 5 10 15 20 25 30
INPUT VOLTAGE (V)
300
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
INDUCTOR CURRENT PEAKS AND VALLEYS
vs. INPUT VOLTAGE (4A COMPONENTS,
AT CURRENT-LIMIT TRIP POINT)
9
8
IPEAK
7
6
5
IVALLEY
4
3
2
1
0
0 5 10 15 20 25 30
INPUT VOLTAGE (V)
NO-LOAD SUPPLY CURRENT
(4A COMPONENTS, SKIP MODE, 300kHz)
800
ICC
600
400
200
0
0
IIN
IDD
5 10 15 20 25 30
INPUT VOLTAGE (V)
NO-LOAD SUPPLY CURRENT vs.
INPUT VOLTAGE
(4A COMPONENTS, PWM MODE, 300kHz)
10
8
IIN
6
IDD
4
2
ICC
0
0 5 10 15 20 25 30
INPUT VOLTAGE (V)
NO-LOAD SUPPLY CURRENT vs. INPUT
VOLTAGE (1.5A COMPONENTS,
SKIP MODE, VOUT = 2.5V, 600kHz)
600
ICC
500
400
300
200
100
0
4.0
IIN
IDD
4.5
5.0
5.5
6.0
VCC, VDD, VIN INPUT VOLTAGE (V)
6 _______________________________________________________________________________________
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