DLPA2000 datasheet(9/58 Pages) TI1

9 / 58 page

DLPA2000

www.ti.com

DLPS043A – JUNE 2014 – REVISED AUGUST 2015

Electrical Characteristics (continued)

over operating free-air temperature range (unless otherwise noted) (see

(1)(2))

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

LED CURRENT CONTROL

LED forward voltage

4.8

VIN ≥ 2.3 V, VLED ≤ 4.8 V

RLIM = 100 mΩ, 0.1%, TA = 25°C (see

Current at minimum code 0x00Ch for SWx

IDAC[9:0].

DLPA2000 LED currents

VIN ≥ 2.3 V, VLED ≤ 4.8 V

RLIM = 100 mΩ, 0.1%, TA = 25°C (see

ILED

750

Current at maximum code 0x307h for

SWx_IDAC[9:0].

DC current accuracy, SW4, 5, 6

RLIM = 100 mΩ

ILIM[3:0] = 0000 at RLIM = 100 m

130

Transient LED current limit range

ILIM[3:0] = 1111 at RLIM = 100 m

1500

ILED from 5% to 95%, ILED = 300 mA,

trise

Current rise time

Transient current limit disabled

µs

Not tested in production

1.1-V REGULATOR

VCORE (BUCK)

VIN

Input voltage

2.3

Nominal fixed output voltage

1.1

VOUT

0 mA

≤ IOUT ≤ 600 mA at VIN > 2.5 V

DC output voltage accuracy

–1.5%

1.5%

VOUT = 1.1 V

Maximum duty cycle

100%

Low-side MOSFET on-resistance

185

380

Ω

RDS(ON)

VIN = 3.6 V, TJ = 27ºC

High-side MOSFET on-resistance

240

480

Ω

IOUT

Output current

VIN > 2.3 V

300

600

ILIMIT

Switch current limit

Time to ramp from 10% to 90% of VOUT,

TSS

Soft-start time

250

µs

VIN = 3.6 V

COUT

Output capacitance

µF

Nominal Inductance

2.2

µH

LOAD SWITCH

VIN

Input voltage range

LS_IN

1.8

3.6

P-channel MOSFET on-

RDS(ON)

VIN = 1.8 V, over full temperature range

385

505

resistance

Output capacitor

Ceramic

4.7

µF

COUT

ESR of output capacitor

Ceramic

500

MEASUREMENT SYSTEM (AFE)

AFE_GAIN[1:0] = 01

1.0

Amplifier gain (PGA)

AFE_GAIN[1:0] = 10

9.5

V/V

AFE_GAIN[1:0] = 11

PGA, AFE_CAL_DIS = 1

–1

Not tested in production

VOFS

Input referred offset voltage

Comparator

–1.5

1.5

Not tested in production

To 1% of final value

(not tested in production)

tsettle

Settling time

µs

To 0.1% of final value

(not tested in production)

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