EHA-L37L37-R01-L1 or EHA-L50L50-R01-L1
of the TEG can affect temperatures. It is recommended that
Vout OPTIONS
the
user
place
and
monitor
external
thermocouples/thermisters/RTD’s on both the heat source
and heat sink (or ambient conditions) in addition to
monitoring the on-board thermistors.
VS1
GND
VS2
GND
VOUT
2.35V
3.3V
4.1V
5V
VAUX
GND
GND
VAUX
VAUX
VAUX
GND1 (PIN 2), GND2 (PIN 4)
Ground pin.
VLDO (PIN 3)
Output of the 2.2V Low Drop Out (LDO). The LTC3108
includes a low current LDO to provide a regulated 2.2V output
for powering low power processors and other low power ICs.
The LDO output is current limited to 4mA.
Manufacturer: GE Industrial Sensing (Thermometrics)
PN: A040A-UBCF16XF103X-A
Resistance at 25°C: 10 KOhm +/- 0.20%
β 25/100: 3992 K +/- 1%
PGD (PIN 5)
Power good output that monitors the VOUT voltage. The PGD
output is designed to drive a microprocessor or other chip I/O
and is not intended to drive a higher current load such as an
LED. When VOUT is within 7.5% of its programmed value, PGD
will be pulled up to VLDO through a 1MΩ resistor. If VOUT
drops 9% below its programmed value PGD will go low.
298K 3992K
T
3992K
ln 10k R
298K
ln 10k R
where R is the resistance of the thermistor that you want to
measure and T is the temperature of the thermistor.
APPLICATION NOTES
VSTORE
CUSTOMER
ADDITION
+
TEG
VLDO
+
µP
2.2µF
VOUT
Converter
+
220µF
SENSORS
RF LINK
VSTORE (PIN 6)
Output for the storage capacitor or battery. The VSTORE
output can be used to charge a large storage capacitor or
rechargeable battery. The storage element on VSTORE can
be used to power the system in the event that the input
source is lost or is unable to provide the current demanded by
VOUT and LDO output. A large capacitor may be connected
from this pin to GND for powering the system in the event the
input voltage is lost. It will be charged up to 5.25V. Note
that it may take a long time to charge a larger capacitor,
depending on the input energy available and the loading on
VOUT and VLDO. Since the maximum current from VSTORE is
limited to a few milliamps, it can safely be used to trickle-
charge NiCd or NiMH rechargeable batteries for energy
storage when the input voltage is lost. Note that the VSTORE
capacitor cannot supply large pulse currents to VOUT. Any
pulse load on VOUT must be handled by the VOUT capacitor. If
not used, this pin should be left open.
PGD
GND
VOUT and VSTORE Capacitor
For pulsed load applications, the VOUT capacitor should be
sized to provide the necessary current when the load is
pulsed on. The capacitor value required will be dictated by
the load current, the duration of the load pulse, and the
amount of voltage drop the circuit can tolerate. The capacitor
must be rated for the voltage selected for VOUT by VS1 and
VS2.
ILoad mA t
ms
Pulse
T
HOT, TCOLD (PINS 7-10)
Cout F
Thermistor leads for hot side and cold side TEG temperatures.
The temperature readings from the on-board thermistors
monitor the hot side and cold side of the embedded TEG. In
application, these temperatures will be different than the
source and sink temperatures used to define the system
temperature difference included in the performance plot. The
following figure shows how thermal resistance on either side
VOUT
V
∆ VOUT is the maximum allowable voltage drop on VOUT. Note
that there must be enough energy available from the input
voltage source for VOUT to recharge the capacitor during the
interval between load pulses. Reducing the duty cycle of the
DOC # 102-0389 REV 3 - PAGE 3 OF 4
5秒后页面跳转
PCF8574资料解读：主要参数分析、引脚说明
AD637数据手册解读：主要特性、引脚及其功能解读、电气参数
ADUM1201资料手册解读：参数分析、引脚说明、应用分析
一文带你了解压敏电阻器在直流电路中的过压保护作用
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
