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參數(shù)資料
| 型號： | LTC1142CG |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | OCTAL BUS TRANSCEIVER O.C. 20-PDIP 0 to 70 |
| 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)： | 4/20頁 |
| 文件大?。?/td> | 401K |
| 代理商： | LTC1142CG |
4
LTC1142/LTC1142L/LTC1142HV
ELECTRICAL C
HARA TERISTICS
The
G
denotes specifications which apply over the full operating
temperature range.
Note 1:
T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formula:
LTC1142CG: T
J
= T
A
+ (P
D
×
95
°
C/W)
Note 2:
This current is for one regulator block. Total supply current is the
sum of Pins 10 and 24 currents. Dynamic supply current is higher due to
the gate charge being delivered at the switching frequency. See the
Applications Information section.
Note 3:
In applications where R
SENSE
is placed at ground potential, the off-
time increases approximately 40%.
Note 4:
The LTC1142/LTC1142HV-ADJ/LTC1142HV/LTC1142L-ADJ are
not tested and quality-assurance sampled at –40
°
C to 85
°
C. These
specifications are guaranteed by design and/or correlation.
Note 5:
The LTC1142L-ADJ allows operation down to V
IN
= 3.5V.
C
HARA TERISTICS
U
A
TYPICAL PERFOR
CE
5V Output Efficiency
LOAD CURRENT (A)
0.01
E
100
95
90
85
0.1
1
1142 G01
2
V
IN
= 6V
V
IN
= 10V
3.3V Output Efficiency
LOAD CURRENT (A)
0.01
E
100
95
90
85
0.1
1
1142 G02
2
V
IN
= 5V
V
IN
= 10V
5V Efficiency vs Input Voltage
INPUT VOLTAGE (V)
0
E
100
98
96
94
92
90
88
86
84
82
80
16
1142 G03
4
8
12
20
FIGURE 1 CIRCUIT
V
OUT
= 5V
I
LOAD
= 1A
I
LOAD
= 100mA
3.3V Efficiency vs Input Voltage
Load Regulation
LOAD CURRENT (A)
0
V
O
20
0
–20
–40
–60
–80
–100
2.0
1142 G06
0.5
1.0
1.5
2.5
FIGURE 1 CIRCUIT
R
SENSE
= 0.05
V
IN
= 6V
V
IN
= 6V
V
IN
= 12V
V
OUT
= 5V
V
OUT
= 3.3V
V
IN
= 12V
INPUT VOLTAGE (V)
0
V
O
40
30
20
10
0
–10
–20
–30
–40
16
1142 G05
4
8
12
20
FIGURE 1 CIRCUIT
I
LOAD
= 1A
Line Regulation
INPUT VOLTAGE (V)
0
E
100
98
96
94
92
90
88
86
84
82
80
16
1142 G04
4
8
12
20
FIGURE 1 CIRCUIT
V
OUT
= 3.3V
I
LOAD
= 1A
I
LOAD
= 100mA
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1142L | OCTAL BUS TRANSCEIVER O.C. 20-PDIP 0 to 70 |
| LTC1142L-ADJ | OCTAL BUS TRANSCEIVER O.C. 20-SO 0 to 70 |
| LTC1142-ADJ | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| LTC1142HV-ADJ | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| LTC1142HVCG | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1142CG#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(biāo)準(zhǔn)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) |
| LTC1142CG#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(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 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 |
| LTC1142CG#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(biāo)準(zhǔn)包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 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 ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR) |
| LTC1142HV | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual High Efficiency Synchronous Step-Down Switching Regulators |
| LTC1142HV-ADJ | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual High Efficiency Synchronous Step-Down Switching Regulators |
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