CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
TC7660
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage ...................................................... +10.5V
LV and OSC Inputs
Voltage (Note 1) ........................ – 0.3V to (V+ + 0.3V)
for V+ < 5.5V
(V+ – 5.5V) to (V+ + 0.3V)
for V+ > 5.5V
Current Into LV (Note 1) ..................... 20 µA for V+ > 3.5V
Output Short Duration (VSUPPLY ≤ 5.5V) ......... Continuous
Power Dissipation (TA ≤ 70°C) (Note 2)
CerDIP ............................................................800mW
Plastic DIP ......................................................730mW
SOIC ...............................................................470mW
Operating Temperature Range
C Suffix .................................................. 0°C to +70°C
I Suffix ............................................... – 25°C to +85°C
E Suffix ............................................. – 40°C to +85°C
M Suffix ........................................... – 55°C to +125°C
Storage Temperature Range ................ – 65°C to +150°C
Lead Temperature (Soldering, 10 sec) ................. +300°C
*Static-sensitive device. Unused devices must be stored in conductive
material. Protect devices from static discharge and static fields. Stresses
above those listed under "Absolute Maximum Ratings" may cause perma-
nent damage to the device. These are stress ratings only and functional
operation of the device at these or any other conditions above those
indicated in the operation sections of the specifications is not implied.
Exposure to absolute maximum rating conditions for extended periods
may affect device reliability.
ELECTRICAL CHARACTERISTICS: Specifications Measured Over Operating Temperature Range With,
V+ = 5V, COSC = 0, Test Circuit (Figure 1), unless otherwise indicated.
Symbol Parameter
Test Conditions
Min Typ Max Unit
I+
V+H
V+L
ROUT
Supply Current
Supply Voltage Range, High
Supply Voltage Range, Low
Output Source Resistance
FOSC
PEFF
VOUT EFF
ZOSC
Oscillator Frequency
Power Efficiency
Voltage Conversion Efficiency
Oscillator Impedance
RL = ∞
Min ≤ TA ≤ Max,
RL = 10 kΩ, LV Open
Min ≤ TA ≤ Max,
RL = 10 kΩ, LV to GND
IOUT = 20mA, TA = 25°C
IOUT = 20mA, 0°C ≤ TA ≤ +70°C
(C Device)
IOUT = 20mA, – 40°C ≤ TA ≤ +85°C
(I Device)
IOUT = 20mA, – 55°C ≤ TA ≤ +125°C
(M Device)
V+ = 2V, IOUT = 3 mA, LV to GND
0°C ≤ TA ≤ +70°C
V+ = 2V, IOUT = 3 mA, LV to GND
– 55°C ≤ TA ≤ +125°C (Note 3)
Pin 7 open
RL = 5 kΩ
RL = ∞
V+ = 2V
V+ = 5V
—
80
180 µA
3
—
10 V
1.5
—
3.5 V
—
70
100 Ω
—
—
120 Ω
—
—
130 Ω
—
104 150 Ω
—
150 300 Ω
—
160 600 Ω
—
10
— kHz
95
98
—%
97 99.9 — %
—
1
— MΩ
—
100
— kΩ
NOTES: 1. Connecting any input terminal to voltages greater than V+ or less than GND may cause destructive latch-up. It is recommended that no
inputs from sources operating from external supplies be applied prior to "power up" of the TC7660.
2. Derate linearly above 50°C by 5.5 mW/°C.
3. TC7660M only.
4. The TC7660 can be operated without the Dx diode over full temperature and voltage range.
4-52
TELCOM SEMICONDUCTOR, INC.