MC7660 Datasheet, PDF (2/12 Pages) ON Semiconductor – Charge Pump DC-to-DC Voltage Converter

MC7660
ABSOLUTE MAXIMUM RATINGS*
Parameter
Value
Unit
Supply Voltage
+10.5
V
LV and OSC Inputs Voltage (Note 1.)
V+ < 5.5V
V+ > 5.5V
V
–0.3 to (V+ + 0.3)
(V+ – 5.5) to (V+ + 0.3)
Current Into LV (Note 1.) V+ > 3.5V
20
µA
Output Short Duration (VSUPPLY ≤ 5.5V)
Power Dissipation (TA ≤ 70°C)
Derate above 50°C
Continuous
470
5.5
mW
mW/°C
Operating Temperature Range
°C
–40 to +85
Storage Temperature Range
–65 to +150
°C
Lead Temperature (Soldering, 10 Seconds)
+300
°C
* Maximum Ratings are those values beyond which damage to the device may occur.
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 MC7660.
ELECTRICAL CHARACTERISTICS (Specifications Measured Over Operating Temperature Range, V+ = 5V, COSC = 0,
Test Circuit (Figure 1), unless otherwise noted.
Symbol
I+
V+H
V+L
ROUT
R Supply Current (RL = )
Characteristic
Supply Voltage Range, High
W (–40°C ≤ TA ≤ +85°C, RL = 10 k , LV Open)
Supply Voltage Range, Low
W (–40°C ≤ TA ≤ +85°C, RL = 10 k , LV to GND)
Output Source Resistance
IOUT = 20mA, TA = 25°C
IOUT = 20mA, 0°C ≤ TA ≤ +70°C
IOUT = 20mA, –40°C ≤ TA ≤ +85°C
V+ =2V, IOUT = 3 mA, LV to GND, 0°C ≤ TA ≤ +70°C
Min
Typ
Max
Unit
—
80
180
µA
3.0
—
V
10
V
1.5
—
3.5
W
—
70
100
—
—
120
—
—
130
—
150
300
FOSC
PEFF
Oscillator Frequency (Pin 7 Open)
W Power Efficiency (RL = 5k )
—
10
—
kHz
95
98
—
%
VOUT EFF
ZOSC
Voltage Conversion Efficiency
Oscillator Impedance
V+ = 2V
V+ = 5V
97
99.9
—
%
kW
—
1000
—
—
100
—
C1 ⁺
10 mF
1
8
2
7
MC7660
3
6
4
5
COSC*
IS
IL
V+
(+6 V)
VO
RL
C2
+ ^{10 mF}
m *NOTE: For large values of COSC (>1000 pF), the values
of C1 and C2 should be increased to 100 F.
Figure 1. MC7660 Test Circuit
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