MC7660

http://onsemi.com

2

ABSOLUTE MAXIMUM RATINGS*

Parameter

Value

Unit

Supply Voltage

+10.5

V

LV and OSC Inputs Voltage (Note 1.)

V+ < 5.5V

V+ > 5.5V

–0.3 to (V+ + 0.3)

(V+ – 5.5) to (V+ + 0.3)

V

Current Into LV (Note 1.) V+ > 3.5V

20

µA

Output Short Duration (VSUPPLY ≤ 5.5V)

Continuous

Power Dissipation (TA ≤ 70°C)

Derate above 50

°C

470

5.5

mW

mW/

°C

Operating Temperature Range

–40 to +85

°C

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,

Symbol

Characteristic

Min

Typ

Max

Unit

I+

Supply Current (RL = R)

—

80

180

µA

V+H

Supply Voltage Range, High

(–40

°C ≤ TA ≤ +85°C, RL = 10 kW, LV Open)

3.0

—

10

V

V+L

Supply Voltage Range, Low

(–40

°C ≤ TA ≤ +85°C, RL = 10 kW, LV to GND)

1.5

—

3.5

V

ROUT

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

—

—

—

—

70

—

—

150

100

120

130

300

W

FOSC

Oscillator Frequency (Pin 7 Open)

—

10

—

kHz

PEFF

Power Efficiency (RL = 5kW)

95

98

—

%

VOUT EFF

Voltage Conversion Efficiency

97

99.9

—

%

ZOSC

Oscillator Impedance

V+ = 2V

V+ = 5V

—

—

1000

100

—

—

k

W

*NOTE:

For large values of COSC (>1000 pF), the values

of C1 and C2 should be increased to 100

mF.

MC7660

1

2

3

4

8

7

6

5

+

+

V+

COSC*

C1

10

mF

C2

10

mF

IS

VO

IL

RL

(+6 V)

Figure 1. MC7660 Test Circuit