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參數(shù)資料
| 型號： | 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 |
| 文件頁數(shù)： | 4/20頁 |
| 文件大?。?/td> | 250K |
| 代理商： | LTC1148HVIS-5 |
4
LTC1148
LTC1148-3.3/LTC1148-5
114835fd
ELECTRICAL C
HARA TERISTICS
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formulas:
LTC1148CN, LTC1148CN-3.3, LTC1148CN-5: T
J
= T
A
+ (P
D
×
70
°
C/W)
LTC1148CS, LTC1148CS-3.3, LTC1148CS-5: T
J
= T
A
+ (P
D
×
110
°
C/W)
Note 3:
Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 4:
The LTC1148 and LTC1148HV versions are tested with external
feedback resistors resulting in a nominal output voltage of 5V. The
LTC1148L version is tested with external feedback resistors resulting in a
nominal output voltage of 2.5V.
Note 5:
In applications where R
SENSE
is placed at ground potential, the off
time increases approximately 40%.
Note 6:
The LTC1148, LTC1148HV and LTC1148L series are not tested
and not quality assurance sampled at –40
°
C and 85
°
C. These
specifications are guaranteed by design and/or correlation. The
LTC1148HVI-5 is guaranteed over the full –40
°
C to 85
°
C operating
temperature range.
Note 7:
The LTC1148L and LTC1148L-3.3 allow operation to V
IN
= 3.5V.
C
HARA TERISTICS
U
A
TYPICAL PERFOR
CE
Line Regulation
Efficiency vs Input Voltage
LOAD CURRENT (A)
0
–100
V
O
–80
–60
–40
–20
0
20
0.5
1
1.5
2
LTC1148 TPC03
2.5
FIGURE 1 CIRCUIT
R
SENSE
= 0.05
V
IN
= 6V
V
IN
= 12V
INPUT VOLTAGE (V)
0
80
E
82
86
88
90
100
94
4
8
LTC1148 TPC01
84
96
98
92
12
16
20
I
LOAD
= 100mA
FIGURE 1 CIRCUIT
I
LOAD
= 1A
DC Supply Current
Supply Current in Shutdown
Load Regulation
Operating Frequency
vs (V
IN
– V
OUT
)
(V
IN
– V
OUT
) VOLTAGE (V)
0
N
0.6
1.0
8
LTC1148 TPC06
0.4
0
2
4
6
0.2
1.2
0.8
10
12
1.4
1.6
V
OUT
= 5V
0°C
70°C
25°C
INPUT VOLTAGE
0
0
S
0.3
0.9
1.2
1.5
4
LTC1148 TPC04
0.6
2
6
1.8
2.1
8
10 12 14 16 18
SLEEP MODE
ACTIVE MODE
NOT INCLUDING
GATE CHARGE CURRENT
20
INPUT VOLTAGE (V)
0
0
S
μ
A
2
6
8
10
20
14
4
8
10
18
LTC1148 TPC05
4
16
18
12
2
6
12
14 16
V
SHUTDOWN
= 2V
20
INPUT VOLTAGE (V)
0
V
O
0
10
20
16
LTC1148 TPC02
–10
–20
–40
4
8
12
–30
40
30
FIGURE 1 CIRCUIT
I
LOAD
= 1A
20
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相關代理商/技術參數(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 |
| 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 |
| 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 |
| 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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