CAT661ESA datasheet(3/16 Pages) CATALYST

3 / 16 page

CAT661

Doc. No. 5003, Rev. J

ABSOLUTE MAXIMUM RATINGS

V+ to GND ............................................................. 6V

Input Voltage (Pins 1, 6 and 7) .. -0.3V to (V+ + 0.3V)

BOOST/FC and OSC Input Voltage ........... The least

negative of (Out - 0.3V) or (V+ - 6V) to (V+ + 0.3V)

Output Short-circuit Duration to GND .............. 1 sec.

(OUT may be shorted to GND for 1 sec without damage but

shorting OUT to V+ should be avoided.)

Continuous Power Dissipation (TA = 70

°C)

Plastic DIP ................................................ 730mW

SO ............................................................ 500mW

TDFN ............................................................... 1W

Operating Ambient Temperature Ranges

CAT661E .............. -40

°C to 85°C

Storage Temperature ......................... -65

°C to 160°C

Lead Soldering Temperature (10 sec) ............. 300

°C

ESD Rating-Human Body Model ..................... 2000V

Note: TA = Ambient Temperature

These are stress ratings only and functional operation is not

implied. Exposure to absolute maximum ratings for prolongued

time periods may affect device reliability. All voltages are with

respect to ground.

Parameter

Symbol

Conditions

Min.

Typ

Max.

Units

Inverter: LV = Open. RL = 1k

Ω

3.0

5.5

Supply Voltage

Inverter: LV = GND. RL = 1k

Ω

1.5

5.5

Doubler: LV = OUT. RL = 1k

Ω

2.5

5.5

Supply Current

BOOST/FC = open, LV = Open

0.2

0.5

BOOST/FC = V+ , LV = Open

Output Current

IOUT

OUT is more negative than -4V

100

Output Resistance

C1 = C2 = 10

µF,

3.5

Ω

BOOST/FC = V+ (C1, C2 ESR

≤ 0.5Ω)

C1 = C2 = 100

µF (Note 2)

3.5

Oscillator Frequency FOSC

BOOST/FC = Open

kHz

(Note 3)

BOOST/FC = V+

135

OSC Input Current

IOSC

BOOST/FC = Open

±2

µA

BOOST/FC = V+

±10

Power Efficiency

RL = 1k

Ω connected between V+ and

OUT, TA = 25

°C (Doubler)

RL = 500

Ω connected between GND and

OUT, TA = 25

°C (Inverter)

IL = 100mA to GND, TA = 25

°C (Inverter)

Voltage Conversion

VEFF

No load, TA = 25

°C

99.9

Efficiency

1. In Figure 1, test circuit electrolytic capacitors C1 and C2 are 100

µF and have 0.2Ω maximum ESR. Higher ESR levels may reduce

efficiency and output voltage.

2. The output resistance is a combination of the internal switch resistance and the external capacitor ESR. For maximum voltage and

efficiency keep external capacitor ESR under 0.2

Ω.

3. FOSC is tested with COSC = 100pF to minimize test fixture loading. The test is correlated back to COSC=0pF to simulate the capacitance at

OSC when the device is inserted into a test socket without an external COSC.

ELECTRICAL CHARACTERISTICS

V+ = 5V, C1 = C2 = 100

µF, Boost/FC = Open, COSC = 0pF, and Test Circuit is Figure 1 unless otherwise noted.

Temperature is TA = TAMIN to TAMAX unless otherwise noted.

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