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LTC1148 데이터시트(PDF) 5 Page - Linear Technology

부품명 LTC1148
상세설명  High Efficiency Synchronous Step-Down Switching Regulators
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제조업체  LINER [Linear Technology]
홈페이지  http://www.linear.com
Logo LINER - Linear Technology

LTC1148 데이터시트(HTML) 5 Page - Linear Technology

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5
LTC1148
LTC1148-3.3/LTC1148-5
114835fd
CC
HARA TERISTICS
A
TYPICALPERFOR
CE
Current Sense Threshold Voltage
TEMPERATURE (°C)
0
0
25
50
75
175
125
20
40
150
100
60
80
100
MAXIMUM
THRESHOLD
MINIMUM
THRESHOLD
LTC1148 • TPC09
Off Time vs VOUT
OUTPUT VOLTAGE (V)
0
40
50
60
4
LTC1148 • TPC08
30
20
0
1
23
10
80
70
5
LTC1148-5
LTC1148-3.3
VSENSE
= V
OUT
Gate Charge Supply Current
OPERATING FREQUENCY (kHz)
20
0
4
8
12
28
20
80
140
24
16
200
260
QN + QP = 100nC
QN + QP = 50nC
LTC1148 • TPC07
P-DRIVE (Pin 1): High Current Drive for Top P-Channel
MOSFET. Voltage swing at this pin is from VIN to ground.
NC (Pin 2): No Connection. Can connect to power ground.
VIN (Pin 3): Main Supply Pin. Must be closely decoupled
to power ground Pin 12.
CT (Pin 4): External capacitor CT from Pin 4 to ground sets
the operating frequency. The actual frequency is also
dependent upon the input voltage.
INTVCC (Pin 5): Internal Supply Voltage, Nominally 3.3V.
Can be decoupled to signal ground. Do not externally load
this pin.
ITH (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
RSENSE sets the current trip threshold.
VFB (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 tR,
tF < 1µs, should not be left floating.
SGND (Pin 11): Small-Signal Ground. Must be routed
separately from other grounds to the (–) terminal of COUT.
PGND (Pin 12): Driver Power Ground. Connects to source
of N-channel MOSFET and the (–) terminal of CIN.
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 VIN.
PI FU CTIO S


유사한 부품 번호 - LTC1148_04

제조업체부품명데이터시트상세설명
logo
Linear Technology
LTC1148-3.3 LINER-LTC1148-3.3 Datasheet
384Kb / 20P
   High Efficiency Synchronous Step-Down Switching Regulators
LTC1148-3.3 LINER-LTC1148-3.3_15 Datasheet
247Kb / 20P
   High Efficiency Synchronous Step-Down Switching Regulators
LTC1148-5 LINER-LTC1148-5 Datasheet
384Kb / 20P
   High Efficiency Synchronous Step-Down Switching Regulators
LTC1148-5 LINER-LTC1148-5_15 Datasheet
247Kb / 20P
   High Efficiency Synchronous Step-Down Switching Regulators
LTC1148CN LINER-LTC1148CN Datasheet
384Kb / 20P
   High Efficiency Synchronous Step-Down Switching Regulators
More results

유사한 설명 - LTC1148_04

제조업체부품명데이터시트상세설명
logo
Linear Technology
LTC1148 LINER-LTC1148 Datasheet
384Kb / 20P
   High Efficiency Synchronous Step-Down Switching Regulators
LTC1148-5 LINER-LTC1148-5_15 Datasheet
247Kb / 20P
   High Efficiency Synchronous Step-Down Switching Regulators
LTC1149 LINER-LTC1149_15 Datasheet
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   High Efficiency Synchronous Step-Down Switching Regulators
LTC1159 LINER-LTC1159_15 Datasheet
290Kb / 20P
   High Efficiency Synchronous Step-Down Switching Regulators
LTC1148 LINER-LTC1148_15 Datasheet
247Kb / 20P
   High Efficiency Synchronous Step-Down Switching Regulators
LTC1149-3.3 LINER-LTC1149-3.3_15 Datasheet
333Kb / 20P
   High Efficiency Synchronous Step-Down Switching Regulators
LTC1159 LINER-LTC1159 Datasheet
400Kb / 20P
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logo
Analog Devices
ADP1148 AD-ADP1148 Datasheet
191Kb / 16P
   High Efficiency Synchronous Step-Down Switching Regulators
REV. A
logo
Linear Technology
LTC1149-5 LINER-LTC1149-5_15 Datasheet
333Kb / 20P
   High Efficiency Synchronous Step-Down Switching Regulators
LTC1149 LINER-LTC1149 Datasheet
389Kb / 20P
   High Efficiency Synchronous Step-Down Switching Regulators
More results


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