MAX1968EUI datasheet(5/16 Pages) MAXIM

Part #	MAX1968EUI

Description	Power Drivers for Peltier TEC Modules

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Manufacturer	MAXIM [Maxim Integrated Products]

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Power Drivers for Peltier TEC Modules

_______________________________________________________________________________________

5

ELECTRICAL CHARACTERISTICS (continued)

(VDD = PVDD1 = PVDD2 = SHDN = 5V, PGND1 = PGND2 = FREQ = GND, CTLI = MAXV = MAXIP = MAXIN = REF, CREF = 1µF,

CCOMP = 0.01µF, LLX_ = 3.3µH, CCS = COS2 = 1µF, ITEC < 3ARMS (MAX1968), ITEC < 6ARMS (MAX1969), TA = -40°C to +85°C,

unless otherwise noted.) (Note 4)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

OS1, OS2, CS Input

Current

IOS1,

IOS2, ICS

0 or VDD

-100

+100

µA

SHDN, FREQ Input

Current

ISHDN,

IFREQ

0 or VDD

-5

+5

µA

SHDN, FREQ Input

Low Voltage

VIL

VDD = 3V to 5.5V

VDD x

0.25

SHDN, FREQ Input

High Voltage

VIH

VDD = 3V to 5.5V

VDD x

0.75

V

VMAXV = VREF x 0.67, VOS1 to VOS2 =

±4V, VDD = 5V

MAXV Threshold

Accuracy

VMAXV = VREF x 0.33, VOS1 to VOS2 =

±2V, VDD = 3V

-2

+2

%

MAXV, MAXIP, MAXIN

Input Bias Current

IMAXV-BIAS,

IMAXI_-BIAS

VMAXV = VMAXI_ = 0.1V or 1.5V

-0.1

+0.1

µA

CTLI Gain Accuracy

ACTLI

VCTLI = 0.5V to 2.5V (Note 3)

9.5

10.5

V/V

CTLI Input Resistance

RCTLI

1M

Ω terminated at REF

0.5

2.0

M

Ω

Error-Amp

Transconductance

gm

50

175

µA/V

ITEC Accuracy

VOS1 to VCS = +100mV or -100mV

-10

+10

%

Note 2: Includes power FET leakage.

Note 3: CTLI Gain is defined as:

Note 4: Specifications to -40

°C are guaranteed by design, not production tested.

A

VV

CTLI

REF

OS

CS

=

−

()

1

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