MAX1978 datasheet(4/20 Pages) MAXIM

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Integrated Temperature

Controllers for Peltier Modules

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VDD = PVDD1 = PVDD2 = SHDN = 5V, FREQ = GND, CTLI = FB+ = FB- = MAXV = MAXIP = MAXIN = REF, TA = 0°C to +85°C,

unless otherwise noted. Typical values at TA = +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Integrator Amp Open-Loop Gain

AOL-INT

RLOAD = 10k

Ω to REF

120

Integrator Amp CMRR

CMRRINT

100

Integrator Amp Input Bias Current

IINT-BIAS

VDD = 3V to 5.5V

Integrator Amp Voltage Offset

VINT-OS

VDD = 3V to 5.5V

-3

+0.1

Integrator Amp Gain Bandwidth

GBWINT

100

kHz

Undedicated Chopper Amp

Open-Loop Gain

AOL-AIN

RLOAD = 10k

Ω to REF

120

Undedicated Chopper Amp

CMRR

CMRRAIN

Undedicated Chopper Amp Input

Bias Current

IAIN-BIAS

VDD = 3V to 5.5V

-10

+10

Undedicated Chopper Amp

Offset Voltage

VAIN-OS

VDD = 3V to 5.5V

-200

+10

+200

µV

Undedicated Chopper Amp Gain

Bandwidth

GBWAIN

100

kHz

Undedicated Chopper Amp

Output Ripple

VRIPPLE

A = 5

BFB_ Buffer Error

CLOAD < 100pF

-200

+200

µV

UT and OT Leakage Current

ILEAK

V UT = V OT = 5.5V

µA

UT and OT Output Low Voltage

VOL

Sinking 4mA

150

UT Trip Threshold

FB+ - FB- (see Typical Application Circuit)

-20

OT Trip Threshold

FB+ - FB- (see Typical Application Circuit)20

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