參數(shù)資料
型號(hào)： MAX662AMJA
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： Decade Counter 14-CDIP -55 to 125
中文描述： SWITCHED CAPACITOR REGULATOR, 500 kHz SWITCHING FREQ-MAX, CDIP8
封裝： 0.300 INCH, CERDIP-8
文件頁數(shù)： 5/6頁
文件大?。?/td> 75K
代理商： MAX662AMJA
Layout Considerations
Layout is critical, due to the MAX662A’s high oscillator
frequency. Good layout ensures stability and helps
maintain the output voltage under heavy loads. For best
performance, use very short connections to the capaci-
tors. The order of importance is: C4, C5, C1, C2.
Flash EEPROM Applic ations
The circuit of Figure 3a is a +12V ±5% 30mA flash
EEPROM programming power supply. A microproces-
sor controls the programming voltage via the SHDN
pin. When SHDN is low, the output voltage (which is
connected to the flash memory V
PP
supply-voltage pin)
rises to +12V to facilitate programming the flash memo-
ry. When SHDN is high, the output voltage is connected
to V
IN
through an internal 1k
resistor.
Paralleling Devic es
Two MAX662As can be placed in parallel to increase
output drive capability. The V
CC
, V
OUT
, and GND pins
can be paralleled, reducing pin count. Use a single
bypass capacitor and a single output filter capacitor
with twice the capacitance value if the two devices can
be placed close to each other. If the MAX662As cannot
be placed close together, use separate bypass and
output capacitors. The amount of output ripple
observed will determine whether single input bypass
and output filter capacitors can be used. Under certain
conditions, one device may supply the total output cur-
rent. Therefore, regardless of the number of devices in
parallel, the maximum continuous current must not
exceed 50mA.
12V and 20V Dual-Output Power S upply
Using the charge-pump voltage-doubler circuit of
Figure 4, the MAX662A can produce a +20V supply
from a single +5V supply. Figure 5 shows the current
capability of the +20V supply.
M
+12V, 30mA Flash Memory
Programming S upply
_______________________________________________________________________________________
5
Table 1. Capacitor Suppliers
MAX662A
C2+
*C1
1.0
μ
F
2
1
8
7
C2-
V
CC
V
OUT
PROGRAMMING
CONTROL
DIRECT FROM
μ
P
*C2
1.0
μ
F
V
4.75V TO5.5V
*C4
22
μ
F
V
+12V ±5%
AT 30mA
*C5
22
μ
F
C1+
C1-
SHDN
GND
3
4
5
6
*SPRAGUE 595D SERIES OR EQUIVALENT
MAX662A
C2+
C1
0.22
μ
F
2
1
8
7
C2-
V
CC
V
OUT
PROGRAMMING
CONTROL
DIRECT FROM
μ
P
C2
0.22
μ
F
V
4.75V TO5.5V
C4
4.7
μ
F
V
+12V ±5%
AT 30mA
C5
4.7
μ
F
C1+
C1-
SHDN
GND
3
4
5
6
Figure 3a. Flash EEPROM Programming Power Supply for
Commercial Temperature Range Applications
Figure 3b. Flash EEPROM Programming Power Supply for
Extended and/or Military Temperature Range Applications
Supplier
Phone Number
Fax Number
Capacitor
Capacitor Type*
GRM42-6Z5U224M50
0.22μF Ceramic (SM)
Murata Erie
(814) 237-1431
(814) 238-0490
RPE123Z5U105M50V
1.0μF Ceramic (TH)
595D475X9016A7
4.7μF Tantalum (SM)
Sprague Electric
(603) 224-1961
(207) 324-4140
(603) 224-1430
(207) 324-7223
595D105X9016A7
1.0μF Tantalum (SM)
*Note: (SM) denotes surface-mount component, (TH) denotes through-hole component.
相關(guān)PDF資料
PDF描述
MAX662A +12V, 30mA Flash Memory Programming Supply(12V,30mA快擦寫存儲(chǔ)器編程電源,電荷泵電壓轉(zhuǎn)換器)
MAX6634 12-Bit Plus Sign Temperature Sensors with SMBus/I2C-Compatible Serial Interface(1SMBus/IIC兼容串行接口的帶符號(hào)位12位溫度傳感器)
MAX6635 12-Bit Plus Sign Temperature Sensors with SMBus/I2C-Compatible Serial Interface(1SMBus/IIC兼容串行接口的帶符號(hào)位12位溫度傳感器)
MAX6633 12-Bit Plus Sign Temperature Sensors with SMBus/I2C-Compatible Serial Interface(1SMBus/IIC兼容串行接口的帶符號(hào)位12位溫度傳感器)
MAX6633MSA 12-Bit Plus Sign Temperature Sensors with SMBus/I2C-Compatible Serial Interface
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX662AMSA PR 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
MAX662AMSA/PR 功能描述:電荷泵 12V 30mA Flash Memory Programming Supply RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube
MAX662AMSA/PR-T 功能描述:電荷泵 12V 30mA Flash Memory Programming Supply RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube
MAX662C/D 功能描述:電荷泵 +12V 30mA Flash Memory RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube
MAX662CPA 功能描述:電荷泵 NULL RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube
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