MAX16821A datasheet(4/25 Pages) MAXIM

Part #	MAX16821A

Description	High-Power Synchronous HBLED Drivers with Rapid Current Pulsing

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Manufacturer	MAXIM [Maxim Integrated Products]

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High-Power Synchronous HBLED

Drivers with Rapid Current Pulsing

4

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VCC = 5V, VDD = VCC, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

LED CURRENT SIGNAL DIFFERENTIAL VOLTAGE AMPLIFIER (DIFF)

Common-Mode Voltage Range

VCMR(DIFF)

0

1.0

V

DIFF Output Voltage

VCM

VSENSE+ = VSENSE- = 0V

0.6

V

MAX16821A

-3.7

+3.7

Input Offset Voltage

VOS(DIFF)

MAX16821B/MAX16821C

-1.5

+1.5

mV

MAX16821A

0.992

1

1.008

MAX16821B

5.9

6

6.1

Amplifier Voltage Gain

AV(DIFF)

MAX16821C

18.5

20

21.5

V/V

MAX16821A, CDIFF = 20pF

1.7

MHz

MAX16821B, CDIFF = 20pF

1600

3dB Bandwidth

f3dB

MAX16821C, CDIFF = 20pF

550

kHz

MAX16821A

50

100

MAX16821B

30

60

SENSE+ to SENSE- Input

Resistance

RVS

MAX16821C

10

20

k

Ω

OUTV AMPLIFIER

Gain-Bandwidth Product

VOUTV = 2V

4

MHz

3dB Bandwidth

VOUTV = 2V

1

MHz

Output Sink Current

30

µA

Output Source Current

80

µA

Maximum Load Capacitance

50

pF

OUTV to (CSP - CSN) Transfer

Function

4mV

≤ CSP - CSN ≤ 32mV

132.5

135

137.7

V/V

Input Offset Voltage

1mV

VOLTAGE-ERROR AMPLIFIER (EAOUT)

Open-Loop Gain

AVOLEA

70

dB

Unity-Gain Bandwidth

fGBW

3

MHz

EAN Input Bias Current

IB(EA)

VEAN = 2V

-0.2

+0.03

+0.2

µA

Error Amplifier Output Clamping

Voltage

VCLAMP(EA)

With respect to VCM

905

930

940

mV

INPUTS (MODE AND OVI)

MODE Input-Voltage High

2V

MODE Input-Voltage Low

0.8

V

MODE Pulldown Current

456µA

OVI Trip Threshold

OVPTH

1.244

1.276

1.308

V

OVI Hysteresis

OVIHYS

200

mV

OVI Input Bias Current

IOVI

VOVI = 1V

0.2

µA

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MAX16821A Datasheet(PDF) 4 Page - Maxim Integrated Products

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