CAT661EVA-GT3 ON Semiconductor, CAT661EVA-GT3 Datasheet - Page 2

• Manufacturer Part Number: CAT661EVA-GT3
• Description: Charge Pumps CHG PUMP VOLT CONVERTER
• Manufacturer: ON Semiconductor

Specifications of CAT661EVA-GT3

• Rohs: yes
• Function: Inverting
• Output Voltage: 5 V to 11 V
• Output Current: 100 mA
• Supply Current: 0.5 mA
• Maximum Operating Temperature: + 105 C
• Package / Case: SOIC-8
• Input Voltage: 2.5 V to 5.5 V
• Maximum Power Dissipation: 500 mW
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Switching Frequency: 12.5 KHz

Typical Application
Table 1. PIN DESCRIPTIONS
1 mF to
100 mF
Pin Number
C1
1
2
3
4
5
6
7
8
+
Figure 1. Voltage Inverter
1
2
3
4
Boost/FC
BOOST/FC
CAP+
GND
CAP−
Name
CAP+
CAP−
GND
OUT
OSC
V+
LV
CAT661
Frequency Control for the internal oscillator. With an external
oscillator BOOST/FC has no effect.
Charge Pump Capacitor. Positive terminal.
Power Supply Ground.
Charge pump capacitor. Negative terminal.
Output for negative voltage.
Low−Voltage selection pin. When the input voltage is less
than 3 V, connect LV to GND. For input voltages above 3 V,
LV may be connected to GND or left open. If OSC is driven
externally, connect LV to GND.
Oscillator control input. An external capacitor can be connec-
ted to lower the oscillator frequency. An external oscillator
can drive OSC and set the chip operating frequency. The
charge−pump frequency is one−half the frequency at OSC.
Power supply. Positive voltage input.
OSC
OUT
Boost/FC
V+
LV
Open
V+
8
7
6
5
C2
+V
IN
1.5 V to 5.5 V
Negative
1 mF to
100 mF
Inverted
Voltage
Output
25 kHz typical, 10 kHz minimum
135 kHz typical, 80 kHz minimum
Inverter Mode
http://onsemi.com
Oscillator Frequency
2
V
IN
to 5.5 V
1 mF to
100 mF
Circuit Configuration
= 2.5 V
C1
Figure 2. Positive Voltage Doubler
+
1
2
3
4
BOOST/FC
CAP+
GND
CAP−
Same as inverter.
40 kHz typical
135 kHz typical, 40 kHz minimum
Same as inverter.
Power supply. Positive voltage input.
Same as inverter.
Power supply ground.
LV must be tied to OUT for all input
voltages.
Same as inverter. Do not overdrive OSC
in doubling mode. Standard logic levels
will not be suitable. See the applications
section for additional information.
Positive voltage output.
CAT661
Oscillator Frequency
OSC
OUT
Doubler Mode
V+
LV
8
7
6
5
C2
1 mF to
100 mF
Doubled
Positive
Voltage
Output