參數(shù)資料
型號: PSOC
廠商: Cypress Semiconductor Corp.
英文描述: 8-Bit Programmable System-on-Chip (PSoC⑩) Microcontrollers
中文描述: 8位可編程系統(tǒng)(的PSoC⑩)微控制器片上
文件頁數(shù): 132/148頁
文件大?。?/td> 1412K
代理商: PSOC
Cypress MicroSystems CY8C25122/CY8C26233/CY8C26443/CY8C26643 Family Data Sheet
132
Document #: 38-12010 CY Rev. ** CMS Rev. 3.20
September 5, 2002
13.2.5
Switch Mode Pump Specifications
Table 110:
DC Switch Mode Pump Specifications
Symbol
DC Switch Mode Pump Specifications
Minimum
Typical
Maximum
Unit
Output Voltage
1
1.
2.
Average, neglecting ripple.
For implementation, which includes 2 μH inductor, 1 μF capacitor, and Schottkey diode. Performance is signifi-
cantly a function of external components. Specifications guaranteed for inductors with series resistance less than
0.1 W, with a current rating of > 250 mA, a capacitor with less than 1μA leakage at 5V, and Schottkey diode with
less than 0.6V of drop at 50 mA.
Configuration of note 2. Load is 5 mA.
Configuration of note 2. Load is 5 mA. V
out
is 3.25V.
3.07
-
5.15
V
Available Output Current
V
i
= 1.5 V
,
V
o
= 3.25 V
V
i
= 1.5 V
,
V
o
= 5.0 V
8
2
5
-
-
-
-
mA
mA
Short Circuit Current (V
i
= 3.3 V)
-
12
-
mA
Input Voltage Range (During sustained operation)
1.0
-
3.3
V
Minimum Input Voltage to Start Pump
1.1
1.2
-
Output Voltage Tolerance (Over V
i
Range)
-
5
-
%V
o
Line Regulation (Over V
i
Range)
-
5
-
%V
o
Load Regulation
-
5
-
%V
o
Output Voltage Ripple (Depends on capacitor and load)
-
25
3
3.
4.
-
mV
pp
Transient Response
50% Load Change to 5% error envelope
V
o
Over/Undershoot for 50% Load Change
-
-
1
1
-
-
μs
%V
o
Efficiency
35
4
50
-
%
Switching Frequency
-
1.3
-
MHz
Switching Duty Cycle
-
50
-
%
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