參數(shù)資料
型號： LTC1873EG
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： Quadruple 2-Input Positive-AND Gate 14-TSSOP -40 to 85
中文描述： 5 A SWITCHING CONTROLLER, 750 kHz SWITCHING FREQ-MAX, PDSO28
封裝： 0.209 INCH, PLASTIC, SSOP-28
文件頁數(shù)： 6/32頁
文件大?。?/td> 308K
代理商： LTC1873EG
6
LTC1873
VIDnpin includes an on-chip 40k
pull-up resistor in
series with a diode (see Block Diagram).
V
CC
(Pin 18):
Power Supply Input. All internal circuits
except the output drivers are powered from this pin. V
CC
should be connected to a low noise power supply voltage
between 3V and 7V and should be bypassed to SGND with
at least a 1
μ
F capacitor in close proximity to the LTC1873.
FB2 (Pin 19):
Controller 2 Feedback Input. FB2 should be
connected through a resistor divider network to V
OUT2
to
set the ouput voltage. The loop compensation network for
controller 2 also connects to FB2.
COMP2 (Pin 20):
Controller 2 Loop Compensation. See
COMP1.
RUN/SS2 (Pin 21):
Controller 2 Run/Soft-Start. See RUN/
SS1.
FAULT (Pin 22):
Output Overvoltage Fault (Latched). The
FAULT pin is an open-drain output with an internal 10
μ
A
pull-up. If either regulated output voltage rises more than
15% above its programmed value for more than 25
μ
s, the
FAULT output will go high and the entire LTC1873 will be
disabled. When FAULT is high, both BG pins will go high,
turning on the bottom MOSFET switches and pulling down
the high output voltage. The LTC1873 will remain latched
in this state until the power is cycled. When FAULT mode
is active, the FAULT pin will be pulled up with an internal
10
μ
A current source. Tying FAULT directly to SGND will
disable latched FAULT mode and will allow the LTC1873 to
resume normal operation when the overvoltage fault is
removed.
PGND (Pin 23):
Power Ground. The BGndrivers return to
this pin. Connect PGND to a high current ground node in
close proximity to the sources of external MOSFETs, QB1
and QB2, and the V
IN
and V
OUT
bypass capacitors.
SW2 (Pin 24):
Controller 2 Switching Node. See SW1.
TG2 (Pin 25):
Controller 2 Top Gate Drive. See TG1.
BG2 (Pin 26):
Controller 2 Bottom Gate Drive. See BG1.
BOOST2 (Pin 27):
Controller 2 Top Gate Driver Supply.
See BOOST1.
I
MAX2
(Pin 28):
Controller 2 Current Limit Set. See I
MAX1
.
V
CC
5V
2k
NC
NC
NC
2000pF
2000pF
2000pF
2000pF
BOOST1
TG1
BG1
SW1
I
MAX1
FCB
VID0:4
RUN/SS1
COMP1
FB1
SENSE
LTC1873
BOOST2
TG2
BG2
SW2
I
MAX2
FAULT
RUN/SS2
COMP2
FB2
0.1
μ
F
100
μ
F
V
FB1
V
FB2
V
FAULT
I
BOOST1
I
CC
I
PVCC
I
BOOST2
f
MEASURED
1873 TC
PV
CC
GND
PGND
+
2k
Test Circuit 1
PIU
TEST CIRCUIT
相關(guān)PDF資料
PDF描述
LTC1873 Dual 550kHz Synchronous 2-Phase Switching Regulator Controller with 5-Bit VID(550kHz,雙 路,同步2相開關(guān)穩(wěn)壓器(帶5位VID))
LTC1874 Dual Constant Frequency Current Mode Step-Down DC/DC Controller(雙路(3.3V,1.8V輸出）恒定頻率，電流模式，步降DC/DC控制器)
LTC1874EGN Quadruple 2-Input Positive-AND Gate 14-VQFN -40 to 85
LTC1875 15mA Quiescent Current 1.5A Monolithic Synchronous Step-Down Regulator
LTC1875EGN 15mA Quiescent Current 1.5A Monolithic Synchronous Step-Down Regulator
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1873EG#PBF 功能描述:IC REG CTRLR BUCK PWM VM 28-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
LTC1873EG#TR 功能描述:IC REG CTRLR BUCK PWM VM 28-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
LTC1873EG#TRPBF 功能描述:IC REG CTRLR BUCK PWM VM 28-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX
LTC1874EGN 功能描述:IC REG CTRLR BUCK PWM CM 16-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR)
LTC1874EGN#PBF 功能描述:IC REG CTRLR BUCK PWM CM 16-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR)
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