參數(shù)資料
型號： LTC1142HVCG
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述： 0.05 A SWITCHING CONTROLLER, 250 kHz SWITCHING FREQ-MAX, PDSO28
封裝： 0.209 INCH, PLASTIC, SSOP-28
文件頁數(shù)： 7/20頁
文件大?。?/td> 401K
代理商： LTC1142HVCG
7
LTC1142/LTC1142L/LTC1142HV
PI FU
NDRIVE 1 (Pin 6):
High Current Drive for Bottom N-Channel
MOSFET, Section 1. Voltage swing at Pin 6 is from ground
to V
IN1
.
NC (Pins 7, 8):
No Connection.
PDRIVE 2 (Pin 9):
High Current Drive for Top P-Channel
MOSFET, Section 2. Voltage swing at this pin is from V
IN2
to ground.
V
IN2
(Pin 10):
Supply pin, section 2, must be closely
decoupled to section 2 power ground, Pin 19.
C
T2
(Pin 11):
External capacitor C
T2
from Pin 11 to ground
sets the operating frequency for the section 2. (The actual
frequency is also dependent upon the input voltage.)
INT V
CC2
(Pin 12) :
Internal supply voltage for section 2,
nominally 3.3V, can be decoupled to signal ground, Pin
18. Do not externally load this pin.
I
TH2
(Pin 13):
Gain Amplifier Decoupling Point, Section 2.
The section 2 current comparator threshold increases
with the Pin 13 voltage.
SENSE
–
2 (Pin 14):
Connects (–) input for the current
comparator on section 2.
SENSE
+
2 (Pin 15):
The (+) Input to the Section 2 Current
Comparator. A built-in offset between Pins 15 and 14 in
conjunction with R
SENSE2
sets the current trip threshold
for this section.
V
FB2
(Pin 16):
This pin serves as the feedback pin from an
external resistive divider used to set the output voltage for
section 2.
SHUTDOWN 2 (Pin 17):
When grounded, the section 2
regulator operates normally. Pulling Pin 17 high holds
U
both MOSFETs off and puts section 2 in micropower
shutdown mode. Requires CMOS logic signal with t
r
,
t
f
< 1
μ
s. Do not “float” Pin 17.
SGND2 (Pin 18):
The section 2 small-signal ground must
be routed separately from other grounds to the (–) termi-
nal of the section 2 output capacitor.
PGND2 (Pin 19):
The section 2 driver power ground
connects to source of the N-channel MOSFET and the (–
)
terminal of the section 2 input capacitor.
NDRIVE 2 (Pin 20):
High Current Drive for Bottom N-
Channel MOSFET, Section 2. Voltage swing at Pin 20 is
from ground to V
IN2
.
NC (Pins 21, 22):
No Connection.
PDRIVE 1 (Pin 23):
High Current Drive for Top P-Channel
MOSFET, Section 1. Voltage swing at this pin is from V
IN1
to ground.
V
IN1
(Pin 24):
Supply Pin, Section 1. Must be closely
decoupled to section 1 power ground Pin 5.
C
T1
(Pin 25):
External capacitor C
T1
from Pin 25 to ground
sets the operating frequency for section 1. (The actual
frequency is also dependent upon the input voltage.)
INT V
CC1
(Pin 26):
Internal supply voltage for section 1,
nominally 3.3V, can be decoupled to signal ground, Pin 4.
Do not externally load this pin.
I
TH1
(Pin 27):
Gain Amplifier Decoupling Point, Section 1.
The section 1 current comparator threshold increases
with the Pin 27 voltage.
SENSE
–
1 (Pin 28):
Connects to the (–) input for the
current comparator on section 1.
相關(guān)PDF資料
PDF描述
LTC1142HVCG-ADJ RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
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LTC1143L-ADJ RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1142HVCG#PBF 功能描述:IC REG CTRLR BUCK PWM CM 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:- 標準包裝: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
LTC1142HVCG#TR 功能描述:IC REG CTRLR BUCK PWM CM 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:- 標準包裝: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
LTC1142HVCG#TRPBF 功能描述:IC REG CTRLR BUCK PWM CM 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:- 標準包裝: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
LTC1142HVCG-ADJ 功能描述:IC REG CTRLR BUCK PWM CM 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:- 標準包裝: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
LTC1142HVCG-ADJ#PBF 功能描述:IC REG CTRLR BUCK PWM CM 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:- 標準包裝: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
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