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TC7662AEPA 参数 Datasheet PDF下载

TC7662AEPA图片预览
型号: TC7662AEPA
PDF下载: 下载PDF文件 查看货源
内容描述: 电荷泵DC - DC转换器 [CHARGE PUMP DC-TO-DC CONVERTER]
分类和应用: 转换器稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管PC
文件页数/大小: 7 页 / 56 K
品牌: MICROCHIP [ MICROCHIP TECHNOLOGY ]
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EVALUATION
KIT
AVAILABLE
TC7662A
CHARGE PUMP DC-TO-DC CONVERTER
FEATURES
s
s
s
s
s
s
s
Wide Operating Range ............................. 3V to 18V
Increased Output Current .............................. 40mA
Pin Compatible with ICL7662/SI7661/TC7660/
LTC1044
No External Diodes Required
Low Output Impedance @ I
L
= 20mA ....... 40
Typ.
No Low-Voltage Terminal Required
CMOS Construction
GENERAL DESCRIPTION
The TC7662A is a pin-compatible upgrade to the In-
dustry standard TC7660 charge pump voltage converter. It
converts a +3V to +18V input to a corresponding –3V to
–18V output using only two low-cost capacitors, eliminating
inductors and their associated cost, size and EMI. In addi-
tion to a wider power supply input range (3V to 18V versus
1.5V to 10V for the TC7660), the TC7662A can source
output currents as high as 40mA. The on-board oscillator
operates at a nominal frequency of 12kHz. Operation be-
low 10kHz (for lower supply current applications) is also
possible by connecting an external capacitor from OSC to
ground.
The TC7662A directly is recommended for designs
requiring greater output current and/or lower input/output
voltage drop. It is available in 8-pin PDIP, and CerDIP
packages in commercial and extended temperature ranges.
PIN CONFIGURATION
PDIP/CerDIP
NC 1
C
+
2
GND 3
C
4
8 V
DD
7 OSC
ORDERING INFORMATION
Part No.
TC7662ACPA
TC7662AEPA
TC7662AIJA
TC7662AMJA
Package
8-Pin Plastic DIP
8-Pin Plastic DIP
8-Pin CerDIP
8-Pin CerDIP
Temperature
Range
0°C to +70°C
– 40°C to +85°C
– 25°C to +85°C
– 55°C to +125°C
TC7662A
6 NC
5 V
OUT
NC = NO INTERNAL CONNECTION
FUNCTIONAL BLOCK DIAGRAM
8
I
COSC
7
LEVEL
SHIFT
P SW1
2
CAP
+
TC7662A
VDD
+
Q
F/F
C
Q
COMPARATOR
WITH HYSTERESIS
VREF
LEVEL
SHIFT
N SW4
+
CP
EXT
GND
3
+
LEVEL
SHIFT
OUT
N SW2
4
CR
EXT
CAP
RL
LEVEL
SHIFT
N SW3
5
VOUT
© 2001 Microchip Technology Inc.
DS21468
TC7662A-5 9/11/96