參數(shù)資料
型號(hào): L6997STR
廠商: STMICROELECTRONICS
元件分類: 穩(wěn)壓器
英文描述: SWITCHING CONTROLLER, PDSO20
封裝: MO-153-AC, TSSOP-20
文件頁(yè)數(shù): 19/30頁(yè)
文件大小: 546K
代理商: L6997STR
L6997S
26/30
The current required by the Memory and Termina-
tion supply, depends on the memory type and
size. The figures 28 and 29 show the efficiency for
the termination section of the application shown in
fig. 27.
Figure 28. Eff. vs. Output Current Source Mode
Figure 29. Eff. vs Output Current sink mode
8
Typical Operating Characteristics
Figure 30. Load transient response from 0A to 5A..
Figure 31. Normal functionality in SINK mode..
70
75
80
85
90
95
100
02
3
4
5
6
7
Output Current (A)
E
ffi
ci
enc
y
(%
)
1
Vout = 0.9V
Vcc = 5V
Fsw = 200KHz
Vin = 12V
Vin=1.8V
60
65
70
75
80
85
90
95
100
0
1
2
3
456
7
Output current (A)
E
ff
ici
ency
(
%
)
Vin=12V
Vin = 1.8V
Vin = 12V
Vout=0.9V
Vcc=5V
Fsw=200KHz
Ch1-> Inductor current
Ch2-> Phase Node
Ch3-> Output voltage
Ch1-> Inductor current
Ch2-> Phase Node
Ch3-> Output voltage
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