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TL7660

更新时间： 2024-11-22 03:59:31
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德州仪器 - TI 转换器
页数 文件大小 规格书
19页 336K
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CMOS VOLTAGE CONVERTER

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TL7660 数据手册

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TL7660  
CMOS VOLTAGE CONVERTER  
www.ti.com  
SCAS794–JUNE 2006  
FEATURES  
APPLICATIONS  
•
•
•
On-Board Negative Supplies  
Data-Acquisition Systems  
Portable Electronics  
•
Simple Voltage Conversion, Including  
– Negative Converter  
– Voltage Doubler  
•
•
Wide Operating Range…1.5 V to 10 V  
D, DGK, OR P PACKAGE  
(TOP VIEW)  
Requires Only Two External (Noncritical)  
Capacitors  
NC  
CAP+  
GND  
VCC  
1
2
3
4
8
7
6
5
•
•
No External Diode Over Full Temperature and  
Voltage Range  
OSC  
LV  
Typical Open-Circuit Voltage Conversion  
CAP−  
VOUT  
Efficiency…99.9%  
•
•
Typical Power Efficiency…98%  
NC − No internal connection  
Full Testing at 3 V  
DESCRIPTION/ORDERING INFORMATION  
The TL7660 is a CMOS switched-capacitor voltage converter that perform supply-voltage conversions from  
positive to negative. With only two noncritical external capacitors needed for the charge pump and charge  
reservoir functions, an input voltage within the range from 1.5 V to 10 V is converted to a complementary  
negative output voltage of –1.5 V to –10 V. The device can also be connected as a voltage doubler to generate  
output voltages up to 18.6 V with a 10-V input.  
The basic building blocks of the IC include a linear regulator, an RC oscillator, a voltage-level translator, and four  
power MOS switches. To ensure latch-up-free operation, the circuitry automatically senses the most negative  
voltage in the device and ensures that the N-channel switch source-substrate junctions are not forward biased.  
The oscillator frequency runs at a nominal 10 kHz (for VCC = 5 V), but that frequency can be decreased by  
adding an external capacitor to the oscillator (OSC) terminal or increased by overdriving OSC with an external  
clock.  
For low-voltage operation (VIN < 3.5 V), LV should be tied to GND to bypass the internal series regulator. Above  
3.5 V, LV should be left floating to prevent device latchup.  
The TL7660C is characterized for operation over a free-air temperature range of –40°C to 85°C. The TL7660I is  
characterized for operation over a free-air temperature range of –40°C to 125°C.  
ORDERING INFORMATION  
TA  
PACKAGE(1)  
ORDERABLE PART NUMBER  
TL7660CDGKT  
TL7660CDGKR  
TL7660CP  
TOP-SIDE MARKING(2)  
TM_  
Reel of 250  
MSOP/VSSOP – DGK  
PDIP – P  
Reel of 2500  
Tube of 50  
Tube of 75  
Reel of 2500  
Reel of 250  
Reel of 2500  
Tube of 50  
Tube of 75  
Reel of 2500  
–40°C to 85°C  
TL7660CP  
7660C  
TL7660CD  
SOIC – D  
TL7660CDR  
TL7660IDGKT  
TL7660IDGKR  
TL7660IP  
MSOP/VSSOP – DGK  
PDIP – P  
TN_  
–40°C to 125°C  
TL7660IP  
7660I  
TL7660ID  
SOIC – D  
TL7660IDR  
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at  
www.ti.com/sc/package.  
(2) DGK: The actual top-side marking has one additional character that indicates the assembly/test site.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2006, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
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TL7660CD TI

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TL7660CDGKR TI

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TL7660CDGKT TI

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TL7660CDRG4 TI

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TL7660CP TI

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TL7660CPE4 TI

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TL7660ID TI

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TL7660IDGKR TI

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TL7660IDGKT TI

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