파트넘버.co.kr TJ7660 데이터시트 PDF


TJ7660 반도체 회로 부품 판매점

Charge Pump Voltage Converters



HTC 로고
HTC
TJ7660 데이터시트, 핀배열, 회로
Charge Pump Voltage Converters
TJ7660
FEATURES
• Simple Conversion of +5V Logic Supply to ±5V Supplies
• Simple Voltage Multiplication (VOUT = (-) nVIN)
• Typical Open Circuit Voltage Conversion Efficiency 99.9%
• Typical Power Efficiency 98%
• Wide Operating Voltage Range- TJ7660 1.5V to 10.0V
• Easy to Use - Requires Only 2 External Non-Critical
Passive Components
• No External Diode Over Full Temp. and Voltage Range
SOP-8 PKG
DIP-8 PKG
APPLICATION
• On Board Negative Supply for Dynamic RAMs
• Localized µProcessor (8080 Type) Negative Supplies
• Inexpensive Negative Supplies
• Data Acquisition Systems
www.DataSheet4U.com
< Pin Configuration
ORDERING INFORMATION
Device
Package
TJ7660D
SOP-8
TJ7660N
D I P-8
DESCRIPTION
The HTC TJ7660 is a monolithic CMOS power supply circuit which offers unique performance
advantages over previously available devices.
The TJ7660 performs supply voltage conversions from positive to negative for an input range
of +1.5V to +10.0V resulting in complementary output voltages of -1.5V to -10.0V. Only 2
noncritical external capacitors are needed for the charge pump and charge reservoir functions.
The TJ7660 can also be connected to function as voltage doublers and will generate output
voltages up to +18.6V with a +10V input. Contained on the chip are a series DC supply
regulator, RC oscillator, voltage level translator, and four output power MOS switches.
A unique logic element senses the most negative voltage in the device and ensures that the
output N-Channel switch source-substrate junctions are not forward biased. This assures
latchup free operation.
The oscillator, when unloaded, oscillates at a nominal frequency of 10kHz for an input supply
voltage of 5.0V.
This frequency can be lowered by the addition of an external capacitor to the “OSC” terminal,
or the oscillator may be overdriven by an external clock.
The “LV” terminal may be tied to GROUND to bypass the internal series regulator and improve
() ( )
Jan. 2007-Rev 1.0
1
HTC


TJ7660 데이터시트, 핀배열, 회로
Charge Pump Voltage Converters
TJ7660
Absolute Maximum Ratings
Supply Voltage TJ7660
LV and OSC Input Voltage (Note2)
Current into LV (Note 2)
Output Short Duration (VSUPPLY ≤ 5.5V)
Operating Ambient Temperature
+10.5V
-0.3V to [(V+ +0.3V) for V+] < 5.5V
(V+ -5.5V) to [(V+ +0.3V) for V+] > 5.5V
20µA for V+ > 3.5V
Continuous
0℃ to 70℃
V
V
uA
Thermal Information
Thermal Resistance (Typical, Note 1)
PDIP Package
θJA (℃/W)
150
θJC (℃/W)
N/A
SOIC Package
165
N/A
Metal Can Package (TJ7660 Only)
160
70
Maximum Storage Temperature Range
-65oC to 150℃
Maximum Lead Temperature (Soldering, 10s)
300℃
(SOIC - Lead Tips Only)
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is
a stress only rating and operation of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied.
ELECTRICAL CHARACTERISTIC (TJ7660, V+ = 5V, TA = 25oC, COSC = 0, unless Otherwise Specified
PARAMETER
SYMBOL
TEST CONDITIONS
TJ7660
UNITS
MIN TYP MAX
Supply Current
I+
RL = ∞
- 100 180 µA
Supply Voltage Range -Lo VL+ MIN ≤ TA ≤ MAX, RL =10kΩ, LV to GND 2.0 - 3.5 V
Supply Voltage Range -Hi
Output Source Resistance
VH+
ROUT
MIN ≤ TA ≤ MAX, RL =10kΩ,LVto Open
IOUT =20mA, TA =25℃
3
-
- -V
60 100
IOUT =20mA, -40℃ ≤ TA ≤ 85℃
V+ = 2V, IOUT = 3mA, LV to GND
0℃≤ TA ≤ 70℃
- - -
- - 300
V+ = 2V, IOUT = 3mA, LV to GND, - - 400
-55℃ ≤ TA ≤ 125℃
Oscillator Frequency
Power Efficiency
Voltage Conversion Efficie
NOTES
fOSC
PEF
VOUT EF
RL =5kΩ
RL = ∞
- 10
95 98
98 99.9
- kHz
-%
-%
1. θJA is measured with the component mounted on an evaluation PC board in free air.
2. Connecting any input terminal to voltages greater than V+ or less than GND may cause
destructive latchup. It is recommended that no inputs from sources operating from
external supplies be applied prior to “power up” of the TJ7660.
Jan. 2007-Rev 1.0
2
HTC




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TJ7660 converter

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Charge Pump Voltage Converters - HTC