參數(shù)資料
型號: FA7738P
廠商: FUJI ELECTRIC CO LTD
元件分類: 穩(wěn)壓器
英文描述: 5.5 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, PDIP8
封裝: DIP-8
文件頁數(shù): 17/19頁
文件大?。?/td> 484K
代理商: FA7738P
7
FA7738N/P
(2) Recommended operating conditions
Item
Symbol
Condition
MN.
TYP.
MAX.
Units
Power Supply voltage (VCC)
VCC
9
45
V
VBIAS input voltage
VVBIAS
3.1
5.5
V
Oscillation frequency
fOSC
30
400
kHz
CREG pin capacitance
CREG
0.1
-
μF
VCC pin capacitance
CVCC
-
0.22
-
μF
VBIAS pin capacitance
CVBIAS
-
0.1
-
μF
(3) Electrical Characteristic
·
The characteristics is based on the condition of VVCC=42V,CREG=0.1uF,RT=39k,Ta=+25°C,unless otherwise specified.
·
Line regulation is the difference 45V from 9V.
(1)Regulated voltage (IN,VBIAS pin)
Item
Symbol
Condition
MIN.
TYP.
MAX.
Units
Feedback voltage
VIN
0.990
1.000
1.010
V
Variation with temperature
V
INdT
Ta=-40 to +85
°C
±1
%
Input bias current
IIN
VIN=0 to 2V
-0.15
0.15
μA
(2)Regulated voltage (CREG pin)
Item
Symbol
Condition
MIN.
TYP.
MAX.
Units
Regulated voltage
V
REG
*2
3.00
V
*2
CREG pin occurs over shoot voltage until about 4V in case of starting by ENB pin.
(3)Oscillator section (RT pin)
Item
Symbol
Condition
MIN.
TYP.
MAX.
Units
Oscillation frequency
fOSC
RT=39k
102
120
138
kHz
Line regulation
fdV
VCC=9V to 45V
±3
±5
%
Variation with temperature
fdT
Ta=-40 to +85
°C
±3
±5
%
(4)Soft start section
Item
Symbol
Condition
MIN.
TYP.
MAX.
Units
Soft start time
tS
*4
4
8
12
ms
*4 ts is 10-90% of output voltage
(5)Timer latch protection of short circuit (CP pin)
Item
Symbol
Condition
MIN.
TYP.
MAX.
Units
Delay time of timer latch
tprot
VCC=10V
45
90
180
ms
IN pin on threshold voltage
VTHINON
VCC=10V
*5-1
0.70
0.75
0.80
V
IN pin off threshold voltage
VTHINOFF
*5-2,5-3
0.85
V
IN pin Hysteresis voltage
VTHINHYS
*5-3
0.1
V
*5-1 At the IN pin, when there is a lower voltage than VTHINON, the counter for timer latch starts.
*5-2 At the IN pin, when there is a higher voltage than VTHOFF, the counter for timer latch stops.
*5-3 Design value
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