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參數(shù)資料
| 型號： | LTC1147CS8-3.3 |
| 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： | SWITCHING CONTROLLER, 400 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 0.150 INCH, PLASTIC, SO-8 |
| 文件頁數(shù)： | 5/16頁 |
| 文件大?。?/td> | 204K |
| 代理商： | LTC1147CS8-3.3 |
5
LTC1147-3.3
LTC1147-5/LTC 1147L
V
IN
(Pin 1):
Main Supply Pin. Must be closely decoupled
to ground Pin 7.
C
T
(Pin 2):
External capacitor C
T
from Pin 2 to ground sets
the operating frequency. The actual frequency is also
dependent upon the input voltage.
I
TH
(Pin 3):
Gain Amplifier Decoupling Point. The current
comparator threshold increases with the Pin 3 voltage.
SENSE
–
(Pin 4):
Connects to internal resistive divider
which sets the output voltage. Pin 4 is also the (–) input for
the current comparator.
SENSE
+
(Pin 5):
The (+) input to the current comparator.
A built-in offset between Pins 4 and 5 in conjunction with
R
SENSE
sets the current trip threshold.
SHDN/V
FB
(Pin 6):
When grounded, the fixed output
versions of the LTC1147 family operate normally. Pulling
Pin 6 high holds the P-channel MOSFET off and puts the
LTC1147 in micropower shutdown mode. Requires CMOS
logic signal with t
r
, t
f
< 1
μ
s. Do not leave this pin floating.
On the LTC1147L this pin serves as the feedback pin from
an external resistive divider used to set the output voltage.
GND (Pin 7):
Two independent ground lines must be
routed separately to: 1) the (–) terminal of C
OUT
, and 2) the
cathode of the Schottky diode and (–) terminal of C
IN
.
PDRIVE (Pin 8):
High current drive for the P-channel
MOSFET. Voltage swing at this pin is from V
IN
to ground.
Pin 6 Connection Shown For LTC1147-3.3 and LTC1147-5; Changes Create LTC1147L.
+
–
1
PDRIVE
V
IN
GND
R
S
Q
–
+
C
25mV TO 150mV
3
13k
I
TH
1.25V
6
REFERENCE
–
+
SHDN
V
OS
–
+
V
G
5
6
SENSE
+
100k
5pF
–
+
V
TH1
T
–
+
V
TH2
S
SLEEP
2
C
T
OFF-TIME
CONTROL
V
IN
SENSE
–
SENSE
–
4
8
7
LTC1147 FD
V
FB
PI FU CTIO S
FU CTIO AL DIAGRA
W
相關PDF資料 |
PDF描述 |
|---|---|
| LTC1147CS8-5 | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| LTC1147I | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| LTC1147IS8-3.3 | Alkaline Battery; Voltage Rating:1.5V; Battery Size Code:AA; Battery Capacity:2850mAh; Battery Terminals:Pressure Contact; Diameter:14.5mm; Height:50.5mm RoHS Compliant: NA |
| LTC1148-3.3 | 500kHz and 1MHz High Efficiency 1.5A Switching Regulators; Package: SO; No of Pins: 8; Temperature Range: -40?°C to 85?°C |
| LTC1148-5 | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1147CS8-5 | 功能描述:IC REG CTRLR BUCK PWM CM 8-SOIC 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: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) |
| LTC1147CS8-5#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 8-SOIC 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:2,000 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:50% 電源電壓:9 V ~ 10 V 降壓:無 升壓:是 回掃:是 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 包裝:帶卷 (TR) |
| LTC1147CS8-5#TR | 功能描述:IC REG CTRLR BUCK PWM CM 8-SOIC 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: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) |
| LTC1147CS8-5#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 8-SOIC 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: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) |
| LTC1147HVCS8-3.3 | 功能描述:IC REG CTRLR BUCK PWM CM 8-SOIC 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: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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