ADN8831ACPZ-R2 datasheet(14/20 Pages) AD

Part #	ADN8831ACPZ-R2

Description	Thermoelectric Cooler (TEC) Controller

PDF	20 Pages

Scroll/Zoom	100%

Manufacturer	AD [Analog Devices]

Direct Link	http://www.analog.com

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14 / 20 page

ADN8831

Data Sheet

Rev. A | Page 14 of 20

The sink current is set by the resistor connected from FREQ

(Pin 13) to ground. The sink current is calculated using the

following equation:

FREQ

SINK

where:

ISINC is the sink current at VLIM (Pin 31).

RFREQ is the resistor connected at FREQ (Pin 13).

The cooling and heating limits are calculated using the

following equations:

REF

COOL

VLIM

SINK

COOL

VLIM

HEAT

VLIM

−

MAXIMUM TEC CURRENT LIMIT

To protect the TEC, separate maximum TEC current limits in

cooling and heating directions are set by applying a voltage at

ILIMC (Pin 1) and ILIMH (Pin 32). Maximum TEC currents

are calculated using the following equations:

SENSE

ILIMC

COOL

MAX

TEC

−

SENSE

ILIMH

HEAT

MAX

TEC

−

ADN8831ACPZ-R2 Datasheet(PDF) 14 Page - Analog Devices