S1F76540MOC Epson Electronics America, Inc., S1F76540MOC Datasheet - Page 32

• Manufacturer Part Number: S1F76540MOC
• Description: Charge Pump Type Dc/dc Converter
• Manufacturer: Epson Electronics America, Inc.

S1F76540M0C Series Technical Manual (Rev.1.0)
characteristics. Especially using the VF pin (forward voltage lowering) in a diode causes the boosting
output voltage to be reduced. In the example shown in Fig.9.11, two diodes are used; therefore, be sure
to drop the voltage by 2 × VF as shown in Fig.9.12. The boosting power voltage is indicated in the
following expression.
Power-off method
Output voltage
Precautions
Other setting conditions
Set the POFF1X pin to level LOW (VI); all circuits will be turned off.
When loading diodes for boosting, the diode characteristics directly affect the boosting
When increasing | VO’ | , use a diode with the lower VF value.
output load current value so that it does not exceed the input current rating when performing
high-magnification boosting using diodes.
high-magnification boosting using a diode.
boosting.
Input and output current conditions
To keep the input and output current ratings, multiply the entire boosting magnification by the
In the example shown in Fig.9.11, “80mA ÷ 6 = 13.3mA” is used as the maximum load current.
Input and output voltage conditions
To keep the input and output voltage ratings, be aware of the potential relation when performing
In the circuit shown in Fig.9.11, VI must satisfy input voltage conditions (see Table 7.1) at sextuple
When using the high output mode
Connect the FC pin to VI.
When changing the temperature coefficient CT
Change the TC1 and TC2 pins as shown in Table 5.3.
| VO’ | = 6× | VI | -2×VF ････････ Expression (9.3)
9. REFERENCE: EXTERNAL CONNECTION EXAMPLES
EPSON
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