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參數(shù)資料
| 型號： | APW7057 |
| 廠商： | Anpec Electronics Corporation |
| 英文描述： | High Power Step-Down Synchronous DC/DC Controller |
| 中文描述： | 高功率降壓型同步DC / DC控制器 |
| 文件頁數(shù)： | 4/14頁 |
| 文件大?。?/td> | 154K |
| 代理商： | APW7057 |
Copyright
ANPEC Electronics Corp.
Rev. A.3 - Oct., 2003
APW 7057
www.anpec.com.tw
4
Electrical Characteristics
Recommended Operating Conditions
Symbol
Parameter
Range
Unit
V
CC
VCC Supply Voltage
5
±
5%
0.8 ~ V
CC
V
V
OUT
Output Voltage of the Switching Regulator (Note)
V
V
IN
Input Voltage of the Switching Regulator (Note)
3.3 ~ V
CC
V
T
A
Ambient Temperature
0 ~ 70
o
C
T
J
Junction Temperature
0 ~ 125
o
C
Note : Refer to the typical application circuit
Unless otherwise specified, these specifications apply over V
CC
=5V, V
BOOT
=12V and T
A
= 0~70
o
C. Typical
values are at T
A
=25
o
C.
APW7057
Min
Typ
Symbol
Parameter
Test Conditions
Max
Unit
SUPPLY CURRENT
I
VCC
VCC Nominal Supply
Current
UGATE and LGATE Open
2.1
mA
I
BOOT
BOOT Nominal Supply
Current
Under Voltage Lockout(UVLO)
Rising VCC Threshold
Falling VCC Threshold
OSCILLATOR
F
OSC
Free Running Frequency
Ramp Upper Threshold
Ramp Lower Threshold
UGATE Open
2.1
mA
4.0
3.8
4.2
4.0
4.4
4.2
V
V
250
300
2.85
0.95
340
kHz
V
V
V
OSC
REFERENCE VOLTAGE
V
REF
Reference Voltage
Ramp Amplitude
1.9
V
P-P
0.8
V
Reference Voltage
Accuracy
-1.5
+1.5
%
ERROR AMPLIFIER
F
P
F
Z
DC Gain
First Pole Frequency
First Zero Frequency
75
10
1
dB
Hz
kHz
UGATE Duty Range
0
100
0.1
%
FB Input Current
μ
A
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