CAT661EVA-GT3 ON Semiconductor, CAT661EVA-GT3 Datasheet - Page 12

• 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

Precision Voltage Divider
of V+/2.
Battery Voltage Splitter
provide symmetrical positive and negative voltages equal to one−half the battery voltage.
A precision voltage divider is shown in Figure 26. With load currents under 100 nA, the voltage at pin 2 will be within 0.002%
Positive and negative voltages that track each other can be obtained from a battery. Figure 27 shows how a 9 V battery can
3 V ≤ V
BATTERY
BAT
≤ 11 V
9 V
V
2
V
I
)
150 mF
L
BAT
≤ 100 nA
± 0.002%
C1
Figure 26. Precision Voltage Divider (Load 3 100 nA)
+
+
C1
150 mF
+
Figure 27. Battery Splitter
1
2
3
4
C2
150 mF
http://onsemi.com
BOOST/FC
CAP+
GND
CAP−
1
2
3
4
BOOST/FC
CAP+
GND
CAP−
CAT661
CAT661
12
OSC
OUT
V+
LV
OSC
OUT
V+
LV
8
7
6
5
8
7
6
5
V
+
3 V to 11 V
+
)
C2
150 mF
V
BAT
2
*
(4.5 V)
V
BAT
2
(−4.5 V)