參數(shù)資料
型號： LTC1923EUH
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： High Efficiency Thermoelectric Cooler Controller
中文描述： SWITCHING CONTROLLER, 270 kHz SWITCHING FREQ-MAX, PQCC32
封裝： 5 X 5 MM, PLASTIC, QFN-32
文件頁數(shù)： 1/28頁
文件大小： 452K
代理商： LTC1923EUH
1
LTC1923
1923f
High Efficiency Thermoelectric
Cooler Controller
DESCRIPTIO
U
I
High Efficiency, Low Noise Topology
I
Adjustable Output Slew Rate Reduces EMI
I
Full-Bridge Controller for Bidirectional
Current Control
I
Adjustable Pulse-by-Pulse Bidirectional TEC
Current Limit
I
Open/Shorted Thermistor Indication
I
Solution Footprint in Less Than 0.6"
×
0.8"
(Double-Sided PCB)
I
Available in 5mm x 5mm QFN and
28-Pin SSOP Packages
I
TEC Voltage Clamping
I
TEC Current, Voltage and Heat/Cool Status Outputs
I
Adjustable/Synchronizable Oscillator Frequency
Reduces Filter Component Size and System Noise
I
2.5V Reference Voltage Output
I
2.7V Minimum Operating Voltage
APPLICATIU
, LTC and LT are registered trademarks of Linear Technology Corporation.
I
Laser-Based Fiber Optic Links
I
Medical Instruments
I
CPU Temperature Regulators
Laser Temperature Control Loop Achieving Setpoint Stability of 0.01
°
C
The LTC
1923 is a pulse width modulator intended for
thermoelectric cooler (TEC) or heater applications requir-
ing either unidirectional or bidirectional drive circuits. All
of the necessary control circuitry and two sets of comple-
mentary output drivers are integrated into the LTC1923 to
drive a full bridge, providing an efficient means of bidirec-
tional current flow to the TEC. An accurate temperature
control loop to stabilize the temperature of a laser diode
system is easily achieved with the addition of just a few
external components. Typical temperature setpoint accu-
racy of 0.1
°
C is achievable with the LTC1923. Adding an
instrumentation amplifier front end allows setpoint stabil-
ity of 0.01
°
C.
The part features independent adjustable heating and
cooling pulse-by-pulse current limit, current soft-start for
controlled start-up, output slew rate control to reduce
system noise, differential current sense and voltage am-
plifiers and a host of auxiliary circuits to protect the laser
and provide redundant system monitoring.
4
3
2
1
PLLLPF
R
SLEW
SDSYNC
CNTRL
EAOUT
FB
AGND
SS
I
LIM
V
SET
FAULT
V
THRM
H/C
V
TEC
R
T
C
T
V
REF
PDRVB
NDRVB
V
DD
PGND
NDRVA
PDRVA
CS
+
CS
–
I
TEC
TEC
+
TEC
–
LTC1923
V
DD
–
+
LTC2053
A = 10
REF
LTC1658
REF
10k
0.1%
10k
NTC
V
OUT
TMP
CMD
330pF
1
μ
F
10
μ
F
L1
10
μ
H
V
DD
R
S
C1, C2: TAIYO YUDEN JMK325BJ226MM-T (X7R)
L1, L2: SUMIDA CDRH6D2B-220NC
*MNA, MPA: SILICONIX Si9801
**MNB, MPB: SILICONIX Si9801
1923 TA01
4.7
μ
F
1
μ
F
10M
100k
10k
1
μ
F
L2
10
μ
H
C1
22
μ
F
C2
22
μ
F
MPA*
V
REF
MPB**
MNA*
MNB**
TEC
COOLER
82k
FEATURES
TYPICAL APPLICATIO
U
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1923EUH#PBF 功能描述:IC THERMOELEC COOLER CNTRLR32QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 應(yīng)用:熱電冷卻器 電流 - 電源:- 電源電壓:3 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.173"，4.40mm 寬）裸露焊盤 供應(yīng)商設(shè)備封裝:28-TSSOP 裸露焊盤 包裝:管件 產(chǎn)品目錄頁面:1410 (CN2011-ZH PDF)
LTC1923EUH#TR 功能描述:IC THERMOELEC COLLER CNTRLR32QFN RoHS:否 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:手持/移動設(shè)備 電流 - 電源:- 電源電壓:3 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:14-LLP-EP（4x4） 包裝:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名稱:LP3905SD-30DKR
LTC1923EUH#TRPBF 功能描述:IC THERMOELEC COOLER CNTRLR32QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:手持/移動設(shè)備 電流 - 電源:- 電源電壓:3 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:14-LLP-EP（4x4） 包裝:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名稱:LP3905SD-30DKR
LTC1928ES6-5#PBF 制造商:Linear Technology 功能描述:Charge Pump STPUP 5V 30mA 6-Pin TSOT-23
LTC1928ES6-5#TR 功能描述:IC REG SWITCHED CAP DBL SOT23-6 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:500 系列:- 類型:切換式電容器（充電泵），反相 輸出類型:固定 輸出數(shù):1 輸出電壓:-3V 輸入電壓:2.3 V ~ 5.5 V PWM 型:Burst Mode? 頻率 - 開關(guān):900kHz 電流 - 輸出:100mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 細(xì)型，TSOT-23-6 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:TSOT-23-6 其它名稱:LTC1983ES6-3#TRMTR
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