TLD5085EJ Infineon Technologies, TLD5085EJ Datasheet - Page 12

• Manufacturer Part Number: TLD5085EJ
• Description: IC DC-DC CONV STP-DWN 1.8A DSO8
• Manufacturer: Infineon Technologies

Specifications of TLD5085EJ

• Constant Current: Yes
• Constant Voltage: Yes
• Topology: PWM, Step-Down (Buck), Switched Capacitor (Charge Pump)
• Number Of Outputs: 1
• Internal Driver: *
• Type - Primary: Automotive
• Frequency: 370kHz
• Voltage - Supply: 4.75 V ~ 45 V
• Voltage - Output: 0.6 V ~ 16 V
• Mounting Type: Surface Mount
• Package / Case: DSO-8
• Current - Output / Channel: 1.8A
• Internal Switch(s): *
• Efficiency: *
• Packages: PG-DSO-8
• Vs (min): 4.75 V
• Vs (max): 45.0 V
• Vq (max): -
• Iq (max): 1,800.0 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Operating Temperature: -
• Lead Free Status / Rohs Status: Details

8.4
Figure 5
Note: This is a very simplified example of an application circuit. The function must be verified in the real application
The output voltage of the TLD5085EJ can be programmed by a voltage divider connected to the feedback pin FB.
The divider cross current should be 300 µA at minimum, therefore the maximum
For the desired output voltage level
Datasheet
V
Batt
Optional
Parts
D
RV
PWM Dimming
Constant Output Voltage Mode for LED applications
Application Diagram (constant voltage mode)
Ignition Key
Terminal 15
C
1
L
1
C
2
C
R
COMP
COMP
C
S
R
2
V
≤
CC
V
8
7
1
3
FB
,
VS
EN
PWMI
COMP
R
/
1
I
calculates then (neglecting the small FB input current):
R2
R
GND
1
TLD5085
-->
2
=
R
BUO
R
2
BDS


2
FB
12
V
--------- - 1
V
≤ 0.6V / 300 µA = 2 kΩ
CC
FB
4
5
6
–
C
 .

bootstrap
V
FB
D
BU
L
BU
R
R
1
2
C
BU1
R
2
C
calculates:
BU2
V
Application Information
CC
Rev. 1.1, 2009-12-16
R
balance1
SPIDER-LS
TLD5085EJ
R
TLE7240 SL
balance2