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參數資料
| 型號： | FAN5182 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | Adjustable Output 1, 2, or 3-Phase Synchronous Buck Controller |
| 中文描述： | 可調輸出1，2或3相同步降壓控制器 |
| 文件頁數： | 5/18頁 |
| 文件大?。?/td> | 788K |
| 代理商： | FAN5182 |
5
www.fairchildsemi.com
FAN5182 Rev. 1.0.1
F
Notes:
1. All limits at operating temperature extremes are guaranteed by design, characterization and statistical quality control.
2. Guaranteed by design, not tested in production.
Current Limit Threshold
Voltage
V
CL
V
250k
CSREF
- V
CSCOMP
, R
ILIMIT
=
105
125
145
mV
Current Limit Setting Ratio
V
CL
/I
ILIMIT
10.4
mV/
μ
A
DELAY Normal Mode Voltage
V
DELAY(NM)
R
DELAY
= 250k
,
2.9
3
3.1
V
DELAY Overcurrent Threshold
V
DELAY(OC)
R
DELAY
= 250k
1.7
1.8
1.9
V
Latch-Off Delay Time (Note 2)
t
DELAY
R
DELAY
= 250k
C
DELAY
= 12nF
1.5
ms
SOFT-START
Output Current, Soft-Start
Mode
I
DELAY(SS)
During startup, DELAY < 2.4V
●
15
20
25
μ
A
Soft-Start Delay Time (Note 2)
t
DELAY(SS)
R
DELAY
= 250k
,
C
DELAY
= 12nF
500
μ
s
ENABLE INPUT
Input Low Voltage
V
IL(EN)
V
IH(EN)
●
0.8
V
Input High Voltage
●
2.0
V
Input Hysteresis Voltage
100
mV
Input Current
I
IN(EN)
●
-1
+1
μ
A
POWER GOOD COMPARATOR
Undervoltage Threshold
V
PWRGD(UV)
V
PWRGD(OV)
V
OL(PWRGD)
Relative to FBRTN
●
600
660
720
mV
Overvoltage Threshold
Relative to FBRTN
●
880
940
1000
mV
Ouput Low Voltage
I
PWRGD(SINK)
= 4mA
●
225
400
mV
Power Good Delay Time
200
ns
Crowbar Trip Point
V
CROWBAR
Relative to FBRTN
●
0.970
1.05
1.105
V
Crowbar Reset Point
Relative to FBRTN
●
550
650
750
mV
Crowbar Delay Point (Note 2)
t
CROWBAR
Overvoltage to PWM going low
400
ns
PWM OUTPUTS
Output Low Voltage
V
OL(PWM)
V
OH(PWM)
I
PWM(SINK)
= 400
μ
A
I
PWM(SOURCE)
= -400
μ
A
●
160
500
mV
Output High Voltage
●
4.0
5
V
SUPPLY
DC Supply Current
●
5
10
mA
UVLO THreshold Voltage
V
UVLO
V
CC
rising
●
6.5
6.9
7.3
V
UVLO Hysteresis
●
0.7
0.9
1.1
V
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Units
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