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參數(shù)資料
| 型號(hào)： | TCA7660 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | HIGH FREQUENCY 7660 DC-TO-DC VOLTAGE CONVERTER |
| 中文描述： | 高頻7660型DC - DC電壓轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大小： | 76K |
| 代理商： | TCA7660 |
TC7660H-2 10/1/96
EVALUATION
KIT
AVAILABLE
TC7660H
2001 Microchip Technology Inc. DS21466A
HIGH FREQUENCY 7660 DC-TO-DC VOLTAGE CONVERTER
FEATURES
I
Pin Compatible with 7660, High Frequency
Performance DC-to-DC Converter
Low Cost, Two Low Value External Capacitors
Required ........................................................ (1.0
μ
F)
Converts +5V Logic Supply to
±
5V System
Wide Input Voltage Range ....................1.5V to 10V
Voltage Conversion........................................99.7%
Power Efficiency................................................85%
Available in 8-Pin SOIC and 8-Pin PDIP Packages
I
I
I
I
I
I
GENERAL DESCRIPTION
The TC7660H is a pin-compatible, high frequency up-
grade to the Industry standard TC7660 charge pump volt-
age converter. It converts a +1.5V to +10V input to a
corresponding – 1.5V to – 10V output using only two low-
cost capacitors, eliminating inductors and their associated
cost, size and EMI.
The TC7660H operates at a frequency of 120kHz
(versus 10kHz for the TC7660), allowing the use of 1.0
μ
F
external capacitors. Oscillator frequency can be reduced
(for lower supply current applications) by connecting an
external capacitor from OSC to ground.
The TC7660H is available in 8-pin DIP and small
outline (SOIC) packages in commercial and extended
temperature ranges.
FUNCTIONAL BLOCK DIAGRAM
ORDERING INFORMATION
Temperature
Range
Part No.
Package
TC7660HCOA
TC7660HCPA
TC7660HEOA
TC7660HEPA
TC7660EV
8-Pin SOIC
8-Pin Plastic DIP
8-Pin SOIC
8-Pin Plastic DIP
Evaluation Kit for
Charge Pump Family
0
°
C to +70
°
C
0
°
C to +70
°
C
– 40
°
C to +85
°
C
– 40
°
C to +85
°
C
TC7660H
GND
INTERNAL
VOLTAGE
REGULATOR
RC
OSCILLATOR
VOLTAGE–
LEVEL
TRANSLATOR
÷
2
V+CAP+
8
2
7
6
OSC
LV
3
LOGIC
NETWORK
VOUT
5
CAP–
4
NC
CAP+
GND
CAP
–
VOUT
LOW
VOLTAGE (LV)
OSC
+
V
NC
CAP+
GND
CAP
–
VOUT
LOW
VOLTAGE (LV)
OSC
+
V
NC = NO INTERNAL CONNECTION
8
7
6
5
1
2
3
4
1
8
2
7
3
6
4
5
TC7660HCPA
TC7660HEPA
TC7660HCOA
TC7660HEOA
PIN CONFIGURATION
(DIP and SOIC)
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