Product Summary

The PT4115 is a continuous conduction mode inductive step-down converter, designed for driving single or multiple series connected LED efficiently from a voltage source higher than the total LED chain voltage. The PT4115 operates from an input supply between 6V and 30V and provides an externally adjustable output current of up to 1.2A. Depending upon the supply voltage and external components, the PT4115 can provide more than 30 watts of output power. The applications of the PT4115 include Low voltage halogen replacement LEDs, Automotive lighting, Low voltage industrial lighting, LED back-up lighting, Illuminated signs, SELV lighting, LCD TV backlighting.

Parametrics

PT4115 absolute maximum ratings: (1)VIN, Supply Voltage: -0.3~45 V; (2)SW, Drain of the internal power switch: -0.3~45 V; (3)CSN, Current sense input (Respect to VIN): +0.3~(-6.0) V; (4)DIM, Logic level dimming input: -0.3~6 V; (5)ISW Switch output current: 1.5 A; (6)PDMAX, Power Dissipation: 1.5 W; (7)PTR, Thermal Resistance: 45 ℃/W; (8)TJ, Operation Junction Temperature Range: -40 to 150℃; (9)TSTG, Storage Temperature: -55 to 150℃; (10)ESD Susceptibility: 2 kV.

Features

PT4115 features: (1)Simple low parts count; (2)Wide input voltage range: 6V to 30V; (3)Up to 1.2A output current; (4)Single pin on/off and brightness control using DC voltage or PWM; (5)Up to 1MHz switching frequency; (6)Typical 5% output current accuracy; (7)Inherent open-circuit LED protection; (8)High efficiency (up to 97%); (9)High-Side Current Sense; (10)Hysteretic Control: No Compensatio; (11)Adjustable Constant LED Current; (12)ESOP8 package for large output power application.

Diagrams

PT4115 block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
PT4115
PT4115

Other


Data Sheet

Negotiable 
Image Part No Mfg Description Data Sheet Download Pricing
(USD)
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PT4100
PT4100

Other


Data Sheet

Negotiable 
PT4100-24V
PT4100-24V

Other


Data Sheet

Negotiable 
PT4100-48V
PT4100-48V

Other


Data Sheet

Negotiable 
PT4101A
PT4101A

Texas Instruments

DC/DC Converters 5Vout 15W 48V Input Iso DC/DC

Data Sheet

0-11: $46.40
11-25: $42.77
25-100: $40.40
PT4101C
PT4101C

Texas Instruments

DC/DC Converters 5Vout 15W 48V Input Iso DC/DC

Data Sheet

Negotiable 
PT4102A
PT4102A

Texas Instruments

DC/DC Converters 12Vout 15W 48VInput Iso DC/DC

Data Sheet

Negotiable