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SGM41298

アクティブ

1.5A Thermoelectric Cooler (TEC) Driver

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The SGM41298 is a monolithic thermoelectric cooling (TEC) thermostat driver device with two-stage feedback amplifier. The device includes a differential driver (output) stage, an internal 2.5V output reference voltage and two zero-drift, rail-to-rail chopper amplifiers. The first chopper amplifier biases the sensed temperature signal and another is an error amplifier for compensating the closed loop temperature control. This amplifier can be used with a digital controller as well.

The TEC is driven differentially between a linear push-pull stage and a pulse-width modulation (PWM) switching stage. A linear push-pull stage forms one of the arms of the differential output which has a relatively high gain and saturates if the error signal is not close to zero (> 2.5%). This means that the TEC is effectively driven by the other arm. The other arm has a lower gain, and high frequency PWM switching driver that can drive the TEC with high efficiency. The PWM switching driver output is passed through an LC filter to remove large voltage ripple before reaching the TEC. It can sink or source current for both the heating and cooling modes connected to the TEC and stabilize its temperature at the set point.

The SGM41298 is available in a Green WLCSP-2.55×2.55-25B package. It operates over the -40 to +125 junction temperature range.

More
特性
  • High Efficiency Single Inductor Architecture

  • Single-ended to Differential Driver with Low RDSON MOSFETs inside

  • TEC Voltage and Current Monitoring

  • No External Sense Resistor Required

  • Independent Heating and Cooling Current/Voltage Limits Programming

  • PWM Driver Switching Frequency: 2.0MHz (TYP)

  • Two Rail-to-Rail, Zero-Drift Chopper Amplifiers

  • Compatible with RTD or NTC Thermal Sensors

  • 2.5V Output Reference Voltage

  • Patent Pending

  • Available in a Green WLCSP-2.55×2.55-25B Package

アプリケーション

TEC Temperature Controls

Instruments Requiring TEC Temperature Controls

Optical Modules

Optical Fiber Amplifiers

Optical Networking Systems

注文書
Part Number
StatusPackagePinsPd-Free
RoHS
REACH
Green
MSL RatingOperating Temperature RangeMaterial ContentReliability Report
Unit Resale Price*
(Volume Range: in USD)
Lead Time**
(Volume Range: Days)
SGM41298XG/TR
アクティブ
WLCSP-2.55×2.55-25B
25
Yes
YesYesYesMSL1
-40℃ to +125℃
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1-24 units : $12.25/unit
25-99 units : $10.5/unit
100-249 units : $8.75/unit
250-499 units : $7/unit
500-999 units : $6.125/unit
1000-9999 units : $4.55/unit
3K-9K : 14 days
10K-99K : 35 days
100K-999K : 66 days
1000K and above : 84 days

* 再販価格は参考価格です。正式な見積もりについては、代理店にお問い合わせください。

** 提供されるリードタイムは参考情報であり、異なる状況に応じて変更される可能性があります。

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