Input Voltage (V)

25

30

35

40

45

50

55

60

85

87.5

90

92.5

95

97.5

100

D001

2

4

3

8

10

VIN

TPS92512

PDIM

UVLO

COMP

PH

5

7

RT/CLK

ISENSE

6

IADJ

1

BOOT

9

GND

Pad

0.18V ± 1.8V

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

TPS92512, TPS92512HV

SLVSCT1B – FEBRUARY 2015 – REVISED APRIL 2015

TPS92512 2.5A Buck LED Driver with Integrated Analog Current Adjust

1 Features

3 Description

The TPS92512/HV are 2.5A step-down (buck) current

1

•

Integrated 200-m

Ω High-Side MOSFET

regulators with an integrated MOSFET to drive high

•

4.5-V to 42-V Input Voltage Range

current LEDs. Available with 42 V and 60 V (HV)

(4.5 V to 60 V for the TPS92512HV)

input ranges, these LED drivers operate at a user

•

0 V to 300 mV Adjustable Voltage Reference

selected fixed-frequency with peak-current mode

control and deliver excellent line and load regulation.

•

±5% LED Current Accuracy

•

100-kHz to 2-MHz Switching Frequency Range

The TPS92512/HV LED drivers feature separate

inputs for analog and pulse width modulation (PWM)

•

Dedicated PWM Dimming Input

dimming

for

no

compromise

brightness

control

•

Adjustable Undervoltage-Lock-Out

achieving contrast ratios of greater than 10:1 and

•

Overcurrent Protection

greater than 100:1, respectively. The PWM input is

compatible with low-voltage logic standards for easy

•

Overtemperature Protection

interface to a broad range of microcontrollers. The

•

MSOP-10 Package with PowerPAD™

analog LED current setpoint is adjustable from 0 V to

300 mV using the IADJ input with an external 0 V to

2 Applications

1.8 V signal.

•

Street Lighting

For multi-string applications using two or more

•

Emergency/Exit Lighting

TPS92512/HV LED drivers, the internal oscillator can

be overdriven by an external clock ensuring all of the

•

General Industrial and Commercial Illumination

converters operate at a common frequency thereby

•

Retail Lighting

reducing the potential for beat frequencies and

•

Appliance Lighting

simplifying system EMI filtering. An adjustable input

under-voltage

lockout

(UVLO)

with

hysteresis

•

Transportation Lighting

provides flexibility in setting start/stop voltages based

•

Channel Letters

upon supply voltage conditions.

•

Light Bars

The TPS92512 includes cycle-by-cycle overcurrent

protection and thermal shutdown protection. It is

available in a 10-pin HVSSOP PowerPAD™ package.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS92512

HVSSOP (10)

5.00 mm x 3.00 mm

TPS92512HV

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

4 Simplified Schematics

Efficiency vs Input Voltage

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.