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ADN8834ACPZ-R2 数据表(PDF) 12 Page - Analog Devices

部件名 ADN8834ACPZ-R2
功能描述  Ultracompact, 1.5 A Thermoelectric Cooler (TEC) Controller
PDF  27 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADN8834ACPZ-R2 数据表(HTML) 12 Page - Analog Devices

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ADN8834
Data Sheet
Rev. B | Page 12 of 27
DETAILED FUNCTIONAL BLOCK DIAGRAM
VB
LINEAR
AMPLIFIER
VC
20kΩ
ITEC
1.25V
1.25V
1.25V
5kΩ
VTEC
20kΩ
20kΩ
5kΩ
SFB
IN2P
IN2N
OUT2
IN1P
IN1N
OUT1
1.25V
VLIM/SD
VC
VB = 2.5V AT VDD > 4.0V
VB = 1.5V AT VDD < 4.0V
BAND GAP
VOLTAGE
REFERENCE
VB
VREF
2.5V
VDD
AGND
TEC VOLTAGE
LIMIT AND INTERNAL
SOFT START
COMPENSATION
AMPLIFIER
TEMPERATURE
ERROR
AMPLIFIER
VDD
ADN8834
VDD
40µA
10µA
HEATING
TEC CURRENT SENSE
LDR
TEC
VOLTAGE
SENSE
SW
PGNDS
PVIN
PWM POWER
STAGE
PWM
MOSFET
DRIVER
EN/SY
SFB
20kΩ
20kΩ
20kΩ
20kΩ
100kΩ
VB
VB
400kΩ
80kΩ
PWM
MODULATOR
PWM
ERROR
AMPLIFIER
ILIM
COOLING
ITEC
20k
Ω
TEC
CURRENT
LIMIT
PGNDS
LDR
PGNDL
PVIN
PGNDL
HEATING
COOLING
CLK
SHUTDOWN
0.07V
OSCILLATOR
CLK
SHUTDOWN
DEGLITCH
VHIGH ≥ 2.1V
VLOW ≤ 0.8V
2kΩ
80kΩ
TEC DRIVER
LINEAR POWER
STAGE
+
–
+
–
Figure 25. Detailed Functional Block Diagram of the ADN8834 for the WLCSP



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