MAX8521ETP+T by Analog Devices

Smallest TEC Power Drivers for Optical Modules


The MAX8520/MAX8521 are designed to drive thermoelectric coolers (TECs) in space-constrained optical modules. Both devices deliver ±1.5A output current and control the TEC current to eliminate harmful current surges. On-chip FETs minimize external components and high switching frequency reduces the size of external components. The MAX8520/MAX8521 operate from a single supply and bias the TEC between the outputs of two synchronous buck regulators. This operation allows for temperature control without "dead zones" or other nonlinearities at low current. This arrangement ensures that the control system does not hunt when the set-point is very close to the natural operating point, requiring a small amount of heating or cooling. An analog control signal precisely sets the TEC current. Both devices feature accurate, individually-adjustable heating current limit and cooling current limit along with maximum TEC voltage limit to improve the reliability of optical modules. An analog output signal monitors the TEC current. A unique ripple cancellation scheme helps reduce noise. The MAX8520 is available in a 5mm x 5mm TQFN package and its switching frequency is adjustable up to 1MHz through an external resistor. The MAX8521 is also available in a 5mm x 5mm TQFN as well as space-saving 3mm x 3mm UCSP™ and 36-bump WLP (3mm x 3mm) packages, with a pin-selectable switching frequency of 500kHz or 1MHz.

Where to Buy

Prices starting from US$17.33

Distributor Stock
Logo for element14 Singapore
element14
from US$20.76
1,816
in stock
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Logo for Farnell UK
Farnell
from US$17.33
1,816
in stock
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Logo for Newark
Newark Electronics
from US$19.06
971
in stock
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Features

Circuit Footprint of 0.31in²
Low-Profile Design
On-Chip Power MOSFETs
High-Efficiency Switch-Mode Design
Ripple Cancellation for Low Noise
Direct Current Control Prevents TEC Current Surges
5% Accurate Adjustable Heating/Cooling Current Limits
2% Accurate TEC Voltage Limit
No Dead Zone or Hunting at Low Output Current
ITEC Monitors TEC Current
1% Accurate Voltage Reference
Switching Frequency Up to 1MHz
Synchronization (MAX8521)

Specifications

VIN (V) (min) 3
VIN (V) (max) 5.5
# Step-Down Outputs 1
# Inverting Outputs 1
VOUT (V) (min) -4.3
VOUT (V) (max) 4.3
Package/Pins TQFN/20WLP/36
BudgetaryPrice (See Notes) 5.82

Last 6 months Inventory & Pricing History



MAX8521ETP+T Semiconductors - ICs by Analog Devices

THERMOELECTRIC COOLER DRIVER TQFN-20

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Laser Driver Type Thermoelectric Cooler
Driver Case Style TQFN
No. of Pins 20Pins
Supply Voltage Min 3V
Supply Voltage Max 5.5V
Product Range -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Last 6 months Inventory & Pricing History


Alternative Descriptions

THERMOELECTRIC COOLER DRIVER, TQFN-20 | element14
Thermoelectric Cooler Driver, Tqfn-20 | Newark Electronics

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MAX8521ETP+T ?

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Is the MAX8521ETP+T RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for MAX8521ETP+T have stock available?

Authorised distributors including element14, Farnell and Newark Electronics have stock available or on a lead time for MAX8521ETP+T .

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