TLD5085EJ Infineon Technologies, TLD5085EJ Datasheet - Page 4

• 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

3
3.1
Figure 2
3.2
Pin
1
2
3
4
5
6
7
8
EP
Datasheet
Symbol Function
PWMI
GND
COMP
FB
BDS
BUO
EN
VS
Pin Configuration
Pin Assignment
Pin Configuration
Pin Definitions and Functions
PWM Input for;
Provides LED dimming option. If not used connect to VS.
Ground;
Connect to system ground.
Compensation Input;
Frequency compensation for regulation loop stability.
Connect R and C network to pin for stability.
Feedback Input;
Connect a defined power resistor (RFB=0.6V/ILED) to get the needed LED output current.
For adjustable output voltages connect this pin via a voltage divider in parallel to the output
capacitor.
Buck Driver Supply Input;
Connect the bootstrap capacitor between this pin and pin BUO.
Buck Switch Output;
Source of the integrated power-switch. Connect directly to the cathode of external freewheeling
diode and the buck circuit inductance.
Enable Input;
Apply logic high signal to enable the device. A pull down resistor is integrated.
Supply Voltage Input;
Connect to supply voltage source.
Exposed Pad;
Connect to heatsink area and GND by low inductance wiring.
COMP
PWMI
GND
FB
1
2
3
4
EP
TLD5085
4
S08_Pinout _TLD5085 .vsd
8
7
6
5
VS
EN
BUO
BDS
Rev. 1.1, 2009-12-16
Pin Configuration
TLD5085EJ