參數(shù)資料
型號(hào): HA17451AP
廠商: Hitachi,Ltd.
英文描述: Switching Regulator Controllers for DC/DC Converters
中文描述: 開(kāi)關(guān)穩(wěn)壓器控制器的直流/直流轉(zhuǎn)換器
文件頁(yè)數(shù): 5/15頁(yè)
文件大?。?/td> 83K
代理商: HA17451AP
HA17451AP/HA17451AFP
5
Short-circuit Protection in HA17451A
5
12
15
(2)
14
13
10
(1)
(3)
+
+
+
+
High
Low
Error Amp2
Low
1.23 V
Vref
Vref
PWM Comparator2
Feedback line
Load
(voltage drop)
V
B
Vout
R
U.V.L.O.
Also used as positive feedback route
Positive
feedback
Shutdown
(1)Overcurrent
(2)Vout drops
(3)Output turns off
Absolute Maximum Ratings
(Ta = 25
°
C)
Item
Symbol
Rating
Unit
Note
Power supply voltage
V
CC
V
I
V
O
I
O
P
T
Topr
40
V
Error amplifier input voltage
20
V
Collector output voltage
40
V
Collector output current
50
mA
Power dissipation
680
mW
*
Operating temperature
20 to +85
55 to +125
°
C
°
C
Storage temperature
Note:
This value applies to the HA17451AP at ambient temperatures up to Ta = 45
°
C. Derate by8.3
mW/
°
C above that point.
Tstg
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