TLD5095EL Infineon Technologies, TLD5095EL Datasheet - Page 11

• Manufacturer Part Number: TLD5095EL
• Description: IC DC-DC CTRLR BUCK BOOST 14SSOP
• Manufacturer: Infineon Technologies

Specifications of TLD5095EL

• Constant Current: Yes
• Constant Voltage: Yes
• Topology: PWM, SEPIC, Step-Down (Buck), Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: No
• Type - Primary: Automotive
• Frequency: 100kHz ~ 500kHz
• Voltage - Supply: 4.75 V ~ 45 V
• Voltage - Output: 4.6 V ~ 5.4 V
• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP Exposed Pad, 14-eTSSOP 14-HTSSOP
• Internal Switch(s): *
• Efficiency: *
• Packages: PG-SSOP-14
• Vs (min): 4.75 V
• Vs (max): 45.0 V
• Vq (max): -
• Iq (max): -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Operating Temperature: -
• Current - Output / Channel: -
• Lead Free Status / Rohs Status: Details

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
/ SYNC
×
FREQ
10
−
12
[ ]
Ω
s
1
)
×
(
f
Clock Frequency
FREQ
Oscillator
Detector
[ ]
1
s
)
−
(
3
5 .
×
11
Multiplexer
10
TLD5095
3
[ ]
Ω
)
[ ]
Ω
PWM
Logic
Oscillator and Synchronization
Oscillator_BlkDiag_SyncFixedMode .vsd
Driver
Gate
Rev. 1.1, 2009-12-16
TLD5095EL
SW O