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参数资料
| 型号： | MAX662ACPA+ |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 12V, 30mA Flash Memory Programming Supply |
| 中文描述： | SWITCHED CAPACITOR REGULATOR, 500 kHz SWITCHING FREQ-MAX, PDIP8 |
| 封装： | 0.300 INCH, PLASTIC, DIP-8 |
| 文件页数： | 5/6页 |
| 文件大小： | 75K |
| 代理商： | MAX662ACPA+ |
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 Applications
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 VPP supply-voltage pin)
rises to +12V to facilitate programming the flash memo-
ry. When SHDN is high, the output voltage is connected
to VIN through an internal 1k
resistor.
Paralleling Devices
Two MAX662As can be placed in parallel to increase
output drive capability. The VCC, VOUT, 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 Supply
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.
MAX662A
+12V, 30mA Flash Memory
Programming Supply
_______________________________________________________________________________________
5
Table 1. Capacitor Suppliers
MAX662A
*C1
1.0
F
2
1
8
7
C2-
C2+
VCC
VOUT
PROGRAMMING
CONTROL
DIRECT FROM
P
*C2
1.0
F
VIN
4.75V TO 5.5V
*C4
22
F
VOUT
+12V ±5%
AT 30mA
*C5
22
F
C1+
C1-
SHDN
GND
3
4
5
6
*SPRAGUE 595D SERIES OR EQUIVALENT
MAX662A
C1
0.22
F
2
1
8
7
C2-
C2+
VCC
VOUT
PROGRAMMING
CONTROL
DIRECT FROM
P
C2
0.22
F
VIN
4.75V TO 5.5V
C4
4.7
F
VOUT
+12V ±5%
AT 30mA
C5
4.7
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
0.22F Ceramic (SM)
Murata Erie
(814) 237-1431
(814) 238-0490
RPE123Z5U105M50V
1.0F Ceramic (TH)
595D475X9016A7
4.7F Tantalum (SM)
Sprague Electric
(603) 224-1961
(207) 324-4140
(603) 224-1430
(207) 324-7223
595D105X9016A7
1.0F Tantalum (SM)
*Note: (SM) denotes surface-mount component, (TH) denotes through-hole component.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX662ACPA+ | 功能描述:电荷泵 12V 30mA Flash Programming Supply RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| MAX662ACSA | 功能描述:电荷泵 12V 30mA Flash Programming Supply RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| MAX662ACSA+ | 功能描述:电荷泵 12V 30mA Flash Programming Supply RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| MAX662ACSA+T | 功能描述:电荷泵 12V 30mA Flash Programming Supply RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| MAX662ACSA+TG068 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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