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| TLD5085EJ_15 Datasheet, PDF (13/19 Pages) Infineon Technologies AG – 1.8A DC/DC Step-Down Converter | |||
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Infineon® LITIX⢠Power
TLD5085EJ
Oscillator
7
Oscillator
Confidential
7.1
Description
The oscillator turns on the power-switch with a constant frequency while the buck regulating circuit turns the
power-switch off in every cycle with an appropriate time gap depending on the output and input voltage.
The internal sawtooth signal used for the PWM generation has an amplitude proportional to the input supply
voltage (feedforward).
7.2
Electrical Characteristics Oscillator
Vs = 6 V to 40 V, Tj = -40°C to +150°C, all voltages with respect to ground (unless otherwise specified)
Table 7-1 Electrical Characteristics: Buck Regulator
Parameter
Symbol
Values
Min.
Typ. Max.
Oscillator Frequency fosc
330
370
420
Unit Note or
Test Condition
kHz
Number
P_7.2.1
Data Sheet
15
Revision 1.1
2015-03-10
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