參數(shù)資料
型號(hào)： LTC1148HVIS-5
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, 250 kHz SWITCHING FREQ-MAX, PDSO14
封裝： 0.150 INCH, PLASTIC, SOP-14
文件頁(yè)數(shù)： 5/20頁(yè)
文件大?。?/td> 250K
代理商： LTC1148HVIS-5
5
LTC1148
LTC1148-3.3/LTC1148-5
114835fd
C
HARA TERISTICS
U
A
TYPICAL PERFOR
CE
Current Sense Threshold Voltage
TEMPERATURE (°C)
0
0
S
25
50
75
175
125
20
40
150
100
60
80
100
MAXIMUM
THRESHOLD
MINIMUM
THRESHOLD
LTC1148 TPC09
Off Time vs V
OUT
OUTPUT VOLTAGE (V)
0
O
μ
s
40
50
60
4
LTC1148 TPC08
30
20
0
1
2
3
10
80
70
5
LTC1148-5
LTC1148-3.3
V
SENSE–
= V
OUT
Gate Charge Supply Current
OPERATING FREQUENCY (kHz)
20
0
G
4
8
12
28
20
80
140
24
16
200
260
Q
N
+ Q
P
= 100nC
Q
N
+ Q
P
= 50nC
LTC1148 TPC07
P-DRIVE (Pin 1):
High Current Drive for Top P-Channel
MOSFET. Voltage swing at this pin is from V
IN
to ground.
NC (Pin 2):
No Connection. Can connect to power ground.
V
IN
(Pin 3):
Main Supply Pin. Must be closely decoupled
to power ground Pin 12.
C
T
(Pin 4):
External capacitor C
T
from Pin 4 to ground sets
the operating frequency. The actual frequency is also
dependent upon the input voltage.
INTV
CC
(Pin 5):
Internal Supply Voltage, Nominally 3.3V.
Can be decoupled to signal ground. Do not externally load
this pin.
I
TH
(Pin 6):
Gain Amplifier Decoupling Point. The current
comparator threshold increases with the Pin 6 voltage.
SENSE
–
(Pin 7):
Connects to internal resistive divider
which sets the output voltage in LTC1148-3.3 and
LTC1148-5 versions. Pin 7 is also the (–) input for the
current comparator.
SENSE
+
(Pin 8):
The (+) Input to the Current Comparator.
A built-in offset between Pins 7 and 8 in conjunction with
R
SENSE
sets the current trip threshold.
V
FB
(Pin 9):
For the LTC1148 adjustable version, Pin 9
serves as the feedback pin from an external resistive
divider used to set the output voltage. On LTC1148-3.3
and LTC1148-5 versions this pin is not used.
SHUTDOWN (Pin 10):
When grounded, the LTC1148
series operates normally. Pulling Pin 10 high holds both
MOSFETs off and puts the LTC1148 series in micropower
shutdown mode. Requires CMOS logic signal with t
R
,
t
F
< 1
μ
s, should not be left floating.
SGND (Pin 11):
Small-Signal Ground. Must be routed
separately from other grounds to the (–) terminal of C
OUT
.
PGND (Pin 12):
Driver Power Ground. Connects to source
of N-channel MOSFET and the (–) terminal of C
IN
.
NC (Pin 13):
No Connection. Can connect to power ground.
N-DRIVE (Pin 14):
High Current Drive for Bottom
N-Channel MOSFET. Voltage swing at Pin 14 is from
ground to V
IN
.
PI FU
U
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1148HVIS-5#PBF 功能描述:IC REG CTRLR BUCK PWM CM 14-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(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(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 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
LTC1148HVIS-5#TR 功能描述:IC REG CTRLR BUCK PWM CM 14-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(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(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 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
LTC1148HVIS-5#TRPBF 功能描述:IC REG CTRLR BUCK PWM CM 14-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(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(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 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
LTC1148L 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Efficiency Synchronous Step-Down Switching Regulators
LTC1148LCS 功能描述:IC REG CTRLR BUCK PWM CM 14-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(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(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 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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