參數(shù)資料
型號: ISL88550AIRZ-T
廠商: INTERSIL CORP
元件分類: 穩(wěn)壓器
英文描述: Synchronous Step Down Controller with Sourcing and Sinking LDO Regulator
中文描述: SWITCHING CONTROLLER, 600 kHz SWITCHING FREQ-MAX, PQCC28
封裝: 5 X 5 MM, ROHS COMPLIANT, PLASTIC, MO-220WHHD-1, TQFN-28
文件頁數(shù): 8/25頁
文件大小: 928K
代理商: ISL88550AIRZ-T
8
FN6168.0
October 12, 2005
FIGURE 3. SWITCHING FREQUENCY vs INPUT VOLTAGE
(T
ON
= GND)
FIGURE 4.
SWITCHING FREQUENCY vs TEMPERATURE
(T
ON
= GND)
FIGURE 5. VDDQ REGULATION vs LOAD - 1.8V
FIGURE 6. VDDQ OUTPUT vs INPUT VOLTAGE - 1.8V
FIGURE 7.
OUTPUT RIPPLE vs LOAD - 1.8V (T
ON
= GND)
FIGURE 8.
VTT REGULATION vs VTT LOAD
Typical Operating Characteristics
(Continued)
VIN = 12V, VDDQ = 1.8V, TON = GND, SKIP# = AVDD, circuit of Figure 28, T
A
= 25°C, unless otherwise noted.
400
425
450
475
500
525
550
575
600
625
650
675
700
4
6
8
10
12
14
V
IN
(V)
16
18
20
22
24
26
F
I
OUT
= 0A
I
OUT
= 12A
450
470
490
510
530
550
570
590
-40 -30 -20 -10 0
10
TEMPERATURE (°C)
20
30
40
50
70
80
90 100
F
60
I
OUT
= 12A
I
OUT
= 0A
0.001
0.01
0.1
1
10
LOAD (A)
1.775
1.780
1.785
1.790
1.795
1.800
1.805
1.810
1.815
V
3V
IN
-PWM
3V
IN
-SKIP
12V
IN
-PWM
12V
IN
-SKIP
25V
IN
-PWM
25V
IN
-SKIP
1.775
1.780
1.785
1.790
1.795
1.800
4
6
8
10
12
14
16
18
20
22
24
26
V
IN
(V)
V
I
OUT
= 0A
I
OUT
= 12A
0.001
0.01
0.1
1
10
LOAD (A)
0
10
20
30
40
50
60
O
3V
IN
-PWM
3V
IN
-SKIP
12V
IN
-PWM
12V
IN
-SKIP
25V
IN
-PWM
25V
IN
-SKIP
0.850
0.860
0.870
0.880
0.890
0.900
0.910
0.920
0.930
0.940
0.950
-3.5
-2.5
-1.5
-0.5
LOAD (A)
0.5
1.5
2.5
3.5
V
ISL88550A
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