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| 型号： | MAX662ACSA-T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/6页 |
| 文件大小： | 0K |
| 描述： | IC REG BST SWITCHD CAP 12V 8SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 升压（升压），切换电容（充电泵） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 12V |
| 输入电压： | 4.5 V ~ 5.5 V |
| 频率 - 开关： | 500kHz |
| 电流 - 输出： | 30mA |
| 同步整流器： | 无 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-SOIC |
| 其它名称： | MAX662ACSAT Q1146982B |
+12V, 30mA Flash Memory
Programming Supply
Table 1. Capacitor Suppliers
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)
Sprague Electric
(603) 224-1961
(207) 324-4140
(603) 224-1430
(207) 324-7223
595D475X9016A7
595D105X9016A7
4.7μF Tantalum (SM)
1.0μF Tantalum (SM)
*Note: (SM) denotes surface-mount component, (TH) denotes through-hole component.
Layout Considerations
Layout is critical, due to the MAX662A’s high oscillator
frequency. Good layout ensures stability and helps
C2
0.22 μ F
V IN
4.75V TO 5.5V
C4
V OUT 4.7 μ F
+12V ±5%
AT 30mA C5
4.7 μ F
3
4
5
6
C2-
MAX662A
C2+
V CC
V OUT
C1+
C1-
SHDN
GND
2
1
8
7
C1
0.22 μ F
PROGRAMMING
CONTROL
DIRECT FROM
μ P
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 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.
Figure 3a. Flash EEPROM Programming Power Supply for
Commercial Temperature Range Applications
Paralleling Devices
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
C2-
*C2
1.0 μ F
3
4 C2+
MAX662A
C1+
C1-
2
1
*C1
1.0 μ F
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
V IN
4.75V TO 5.5V
V OUT
+12V ±5%
AT 30mA
*C4
22 μ F
*C5
22 μ F
5
6
V CC
V OUT
SHDN
GND
8
7
PROGRAMMING
CONTROL
DIRECT FROM
μ P
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
*SPRAGUE 595D SERIES OR EQUIVALENT
Figure 3b. Flash EEPROM Programming Power Supply for
Extended and/or Military Temperature Range Applications
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.
_______________________________________________________________________________________
5
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX662ACSA-TG068 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX662AEPA | 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 |
| MAX662AEPA+ | 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 |
| MAX662AESA | 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 |
| MAX662AESA+ | 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 |
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