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ADN8833ACBZ-R7 其他数据使用手册 - ADI（亚德诺）
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ADI（亚德诺）
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电池管理芯片
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WFBGA-25
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热电冷却器
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ADN8833ACBZ-R7数据手册
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Ultracompact, 1 A Thermoelectric Cooler
(TEC) Driver for Digital Control Systems
Data Sheet
ADN8833
FEATURES
Patented high efficiency single inductor architecture
Integrated low R
DSON
MOSFETs for TEC driver
TEC voltage and current operation monitoring
No external sense resistor required
Independent TEC heating and cooling current limit settings
Programmable maximum TEC voltage
2 MHz PWM driver switching frequency
External synchronization
Digital thermal control loop compatible
2.50 V reference output with 1% accuracy
Available in a 25-ball, 2.5 mm × 2.5 mm WLCSP or in a
24-lead, 4 mm × 4 mm LFCSP
APPLICATIONS
TEC temperature control
Optical modules
Optical fiber amplifiers
Optical networking systems
Instruments requiring TEC temperature control
FUNCTIONAL BLOCK DIAGRAM
TEC CURRENT
AND VOLTAGE
SENSE AND LIMIT
CONTROLLER
LINEAR
POWER
STAGE
ADN8833
PWM
POWER
STAGE
OSCILLATOR
VOLTAGE
REFERENCE
ILIM
VLIM/SD
VTEC ITEC
EN/SYVREF
LDR
SW
SFB
CONT
PVIN
PGNDx
VDD
AGND
12909-001
Figure 1.
GENERAL DESCRIPTION
The ADN8833 is a monolithic H-bridge TEC driver with
integrated 1 A power MOSFETs. It has a linear power stage with
the linear driver (LDR) output and a pulse-width modulation
(PWM) power stage with the SW output. Depending on the
control voltage at the CONT input, the ADN8833 drives current
through a TEC to settle the temperature of a laser diode or a passive
component attached to the TEC module to the programmed
target temperature.
The control voltage applied to the CONT input is generated by a
digital-to-analog converter (DAC) closing the digital proportional,
integral, derivative (PID) loop of temperature control system.
The internal 2.5 V reference voltage provides a 1% accurate
output that is used to bias a voltage divider network to program the
maximum TEC current and voltage limits for both the heating
and cooling modes. It can also be a reference voltage for the DAC
and the temperature sensing circuit, including a thermistor bridge
and an analog-to-digital converter (ADC).
Table 1. TEC Family Models
Model MOSFET Thermal Loop Package
ADN8831 Discrete Digital/analog LFCSP (CP-32-7)
ADN8833 Integrated Digital
WLCSP (CB-25-7),
LFCSP (CP-24-15)
ADN8834 Integrated Digital/analog
WLCSP (CB-25-7),
LFCSP (CP-24-15)
Rev. A Document Feedback
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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
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Tel: 781.329.4700 ©2015 Analog Devices, Inc. All rights reserved.
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