TLE 8386EL Infineon Technologies, TLE 8386EL Datasheet - Page 11

• Manufacturer Part Number: TLE 8386EL
• Manufacturer: Infineon Technologies

Specifications of TLE 8386EL

• Packages: PG-SSOP-14
• Comment: HS-sense-booster (prefered as current source)Max. output current dependent on output voltage.
• Vq (max): adj (max 9-times of VS)
• Iq (max): -
• Iq (typ): 7,000.0 µA
• Output: Boost Converter

6
6.1
R_OSC vs. switching frequency
The internal oscillator is used to determine the switching frequency of the boost regulator. The switching frequency
can be selected from 100 kHz to 500 kHz with an external resistor to GND. To set the switching frequency with an
external resistor the following formula can be applied.
In addition, the oscillator is capable of changing from the frequency set by the external resistor to a synchronized
frequency from an external clock source. If an external clock source is provided on the pin FREQ/SYNC, then the
internal oscillator synchronizes to this external clock frequency and the boost regulator switches at the
synchronized frequency. The synchronization frequency capture range is 250 kHz to 500 kHz.
Figure 4
Figure 5
Datasheet
R
V
CLK
FREQ
141
Oscillator and Synchronization
Description
Oscillator and Synchronization Block Diagram and Simplified Application Circuit
Synchronization Timing Diagram
R
FREQ
/ SYN C
FREQ
10
12
s
1
f
Clock Frequency
FREQ
Oscillator
D etector
1
s
3
5 .
11
Multiplexer
10
TLE8386
3
PWM
Logic
Oscillator and Synchronization
Driver
Gate
Rev. 1.0, 2009-11-30
Oscillator_ BlkDiag.vsd
TLE8386EL
SW O