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參數資料
| 型號： | FAN5236QSCX |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | Dual Mobile-Friendly DDR / Dual-output PWM Controller |
| 中文描述： | DUAL SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封裝： | QSOP-28 |
| 文件頁數： | 5/20頁 |
| 文件大小： | 199K |
| 代理商： | FAN5236QSCX |
FAN5236
PRODUCT SPECIFICATION
REV. 1.1.7 4/4/03
5
Electrical Specifications
Recommended operating conditions, unless otherwise noted.
Parameter
Power Supplies
VCC Current
Conditions
Min.
Typ.
Max.
Units
LDRV, HDRV Open, VSEN forced
above regulation point
Shut-down (EN=0)
VIN = 24V
VIN = 0V
2.2
3.0
mA
30
30
–30
1
4.75
4.45
μ
μ
μ
μ
A
A
A
A
V
V
mV
VIN Current – Sinking
VIN Current – Sourcing
VIN Current – Shut-down
UVLO Threshold
10
–15
Rising VCC
Falling
4.3
4.1
4.55
4.25
300
UVLO Hysteresis
Oscillator
Frequency
Ramp Amplitude, pk–pk
Ramp Amplitude, pk–pk
Ramp Offset
Ramp / VIN Gain
Ramp / VIN Gain
Reference and Soft Start
Internal Reference Voltage
Soft Start current (I
Soft Start Complete Threshold
PWM Converters
Load Regulation
VSEN Bias Current
VOUT pin input impedance
Under-voltage Shutdown
Over-voltage threshold
I
SNS
Over-Current threshold
Output Drivers
HDRV Output Resistance
255
300
2
1.25
0.5
125
250
345
KHz
V
V
V
mV/V
mV/V
VIN = 16V
VIN = 5V
VIN
1V < VIN < 3V
≥
3V
0.891
0.9
5
1.5
0.909
V
μ
V
SS
)
at start-up
A
I
OUTX
from 0 to 5A, VIN from 5 to 24V
-2
50
45
70
115
112
+2
120
65
80
125
168
%
nA
K
%
%
μ
80
55
75
120
140
as % of set point. 2
as % of set point. 2
R
ILIM
= 68.5K
μ
μ
S noise filter
S noise filter
see Figure 11.
A
Sourcing
Sinking
Sourcing
Sinking
12
2.4
12
1.2
15
4
15
2
LDRV Output Resistance
PG (Power Good Output) and Control pins
Lower Threshold
Upper Threshold
PG Output Low
Leakage Current
PG2/REF2OUT Voltage
as % of set point, 2
as % of set point, 2
IPG = 4mA
V
PULLUP
= 5V
DDR = 1, 0 mA < I
μ
μ
S noise filter
S noise filter
–86
108
–94
116
0.5
1
1.01
%
%
V
μ
%
A
REF2OUT
≤
10mA
99
VREF2
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