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參數(shù)資料
| 型號(hào)： | FAN5038M |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Current-Mode SMPS Controller |
| 中文描述： | SWITCHING CONTROLLER, PDSO16 |
| 封裝： | SOIC-16 |
| 文件頁數(shù)： | 4/15頁 |
| 文件大?。?/td> | 84K |
| 代理商： | FAN5038M |
PRODUCT SPECIFICATION
FAN5038
REV. 1.0.2 7/6/00
4
Electrical Characteristics—Switch-Mode Regulator
(VCCA = 5V, VCCL = 12V, T
A
= 25
°
C using circuit of Figure 1, unless otherwise noted)
The
denotes speci
fi
cations which apply over the full ambient operating temperature range.
Notes:
1. When the SWCTRL pin is HIGH or left open, the switch-mode regulator output will be preset at 3.5V using internal precision
resistors. When the SWCTRL pin is LOW, the output voltage may be programmed with external resistors. Please refer to
the Applications Section for output voltage selection information.
2. Setpoint accuracy is the initial output voltage variability under the specified conditions. When SWCTRL is LOW, the matching
of the external resistors will have a major influence on this parameter.
3. Cumulative DC accuracy includes setpoint accuracy, temperature drift, line and load regulation, and output ripple.
4. The on-time pulse width of the oscillator is preset using external capacitor C
curves.
EXT
. See Typical Operating Characteristics
Parameter
Output Voltage, VOSW
Conditions
SWCTRL = HIGH
Set by internal resistors
SWCTRL = LOW
Set by external resistors
I
SW
= 4A
T
A
= 0
°
C
–
70
°
C
VCCA = 4.75 to 5.25V
I
SW
= 4A
I
SW
= 0 to 4A
20MHz BW, I
Min.
Typ.
3.5
Max.
Units
V
1
Output Voltage, VOSW
1
1.5
3.6
V
Setpoint Accuracy
Output Temperature Drift
Line Regulation
2
-1.2
+1.2
%Vo
ppm
%Vo
40
0.10
0.15
Load Regulation
Output Ripple, peak-peak
Cumulative DC Accuracy
Efficiency
Output Driver Current
Short Circuit Threshold
Voltage
On Time Pulse Width
±0.9
15
±55
80
±1.3
%Vo
mV
mV
%
A
mV
SW
= 4A
3
±100
I
Open Loop
SW
= 4A
0.5
70
90
100
4
C
EXT
= 100pF
2
μs
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