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參數(shù)資料
| 型號(hào)： | FAN6793MY |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, 68 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | GREEN, MS-012AC, SOIC-16 |
| 文件頁數(shù)： | 2/20頁 |
| 文件大?。?/td> | 1044K |
| 代理商： | FAN6793MY |
2008 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN6791 / FAN6793 Rev. 1.0.3
10
FA
N
6791
/
FA
N
6
79
3
—
H
ighly
Int
e
grat
ed
,
D
u
al-
P
W
M
C
o
mbinat
ion
C
ont
roller
Electrical Characteristics
VDD=18V; RI=24k;TA=25°C, unless noted.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
DCYMAX-OFYB
Maximum Duty Cycle
60
65
70
%
Forward PWM Stage
FBPWM-Feedback Input
AV
FB to Current Comparator
Attenuation
1/3.2
1/2.7
1/2.2
V/V
ZFB
Input Impedance
4
5
7
k
VHGH
Output High Voltage
FB Pin Open
5.0
5.2
V
VOPEN-PWM
PWM Open-Loop Protection
Voltage
4.2
4.5
4.8
V
tOPEN-PWM-
HICCUP
Interval of PWM Open-Loop
Protection Reset
RI=24k
500
600
700
ms
tOPEN-PWM
PWM Open-Loop Protection
Delay Time
RI=24k
80
95
120
ms
VOZ-OPWM
VFBPWM for Zero Duty Cycle
1.2
1.3
1.4
V
IPWM-Current Sense
tPD
Propagation Delay to Output –
VLIMIT Loop
VDD=15V, OPWM
Drops to 9V
60
120
ns
VLIMIT1
Peak Current Limit Threshold
Voltage 1
VRMS=1V
0.75
0.80
0.85
V
VLIMIT2
Peak Current Limit Threshold
Voltage 2
VRMS=1.5V
VLIMIT1-0.1
V
tBNK
Leading-Edge Blanking Time
270
350
450
ns
ΔVSLOPE
Slope Compensation
ΔVs=ΔVSLOPE x (ton/t)
ΔVs: Compensation Voltage
Added to Current Sense
0.40
0.45
0.55
V
OPWM-GATE Driver
VOPWM-CLAMP
Output Voltage Maximum
(Clamp)
VDD=22V
16
18
V
VOL
Output Voltage Low
VDD=15V; IO=100mA
1.5
V
VOH
Output Voltage High
VDD=13V; IO=100mA
8
V
tR
Rising Time
VDD=15V; CL=5nF;
O/P=2V to 9V
30
60
120
ns
tF
Falling Time
VDD=15V; CL=5nF;
O/P=9V to 2V
30
50
110
ns
DCYMAX-OPWM
FAN6791 Maximum Duty Cycle
RI=24kΩ
47
48
49
%
FAN6793 Maximum Duty Cycle
60
65
70
Soft Start
ISS
Constant Current Output for
Soft-Start
RI=24kΩ
17
20
23
A
RD
Discharge Resistance
470
564
Ω
Notes:
1.
When activated, the output is disabled and the latch is turned off.
2.
This is the threshold temperature for enabling the output again and resetting the latch after over-temperature
protection has been activated.
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