參數(shù)資料
型號: UPD780018
廠商: NEC Corp.
元件分類: DC/DC變換器
英文描述: 1 watt dc-dc converters
中文描述: 1瓦的DC - DC轉(zhuǎn)換器
文件頁數(shù): 41/58頁
文件大小: 552K
代理商: UPD780018
41
μ
PD78044H, 78045H, 78046H
DC CHARACTERISTICS
(T
A
= –40 to +85
°
C, V
DD
= 2.7 to 5.5 V)
Notes 1.
Pins to which pull-up resistors are connected by the mask option become V
DD
.
2.
If the X1 pin is used for high-level voltage input, the X2 pin is used for low-level voltage input, or vice
versa. This is also true for the XT1/P04 pin and XT2 pin.
Remark
Unless otherwise specified, the characteristics of a shared pin are the same as those of the correspond-
ing port pin.
Conditions
High-level
input voltage
Low-level
input voltage
High-level
output
voltage
Low-level
output
voltage
V
IH1
V
IH2
V
IH3
V
IH4
V
IH5
V
IH6
V
IH7
V
IL1
V
IL2
V
IL3
V
IL4
V
IL5
V
IL6
V
IL7
V
OH
V
OL1
V
OL2
P21, P23
P00-P03, P20, P22, P24-P27, RESET
P30-P37, P70-P74
N-ch open drain
X1, X2
Note 2
XT1/P04, XT2
Note 2
V
DD
= 4.5 to 5.5 V
P10-P17
V
DD
= 4.5 to 5.5 V
P110-P117, P120-P127
V
DD
= 4.5 to 5.5 V
P21, P23
P00-P03, P20, P22, P24-P27, RESET
P30-P37, P70-P74
V
DD
= 4.5 to 5.5 V
X1, X2
Note 2
XT1/P04, XT2
Note 2
V
DD
= 4.5 to 5.5 V
P10-P17
P110-P117, P120-P127
P01-P03, P10-P17, P20-P27,
P80, P81, P90-P97,
P100-P107, P110-P117,
P120-P127
P30-P37, P70-P74
P01-P03, P10-P17, P20-P27
I
OL
= 400
μ
A
V
DD
= 4.5 to 5.5 V
I
OH
= –1 mA
I
OH
= –100
μ
A
V
DD
= 4.5 to 5.5 V,
I
OL
= 15 mA
V
DD
= 4.5 to 5.5 V,
I
OL
= 1.6 mA
Parameter
Symbol
MAX.
0.7V
DD
0.8V
DD
0.7V
DD
V
DD
– 0.5
V
DD
– 0.5
V
DD
– 0.3
0.65V
DD
0.7V
DD
0.7V
DD
V
DD
– 0.5
0
0
0
0
0
0
0
0
V
DD
– 35
V
DD
– 1.0
V
DD
– 0.5
V
DD
V
DD
15
Note 1
V
DD
V
DD
V
DD
V
DD
V
DD
V
DD
V
DD
0.3V
DD
0.2V
DD
0.3V
DD
0.2V
DD
0.4
0.4
0.3
0.3V
DD
0.3V
DD
2.0
0.4
0.5
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
0.4
Unit
TYP.
MIN.
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