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參數(shù)資料
| 型號： | LTC1147LCS8-3.3#TR |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 400 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 0.150 INCH, PLASTIC, SO-8 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 217K |
| 代理商： | LTC1147LCS8-3.3#TR |
3
LTC1147-3.3
LTC1147-5/LTC1147L
sn1147 1147fds
TA = 25°C, VIN = 10V, VSHDN = 0V, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V5 – V4
Current Sense Threshold Voltage (Note 6)
LTC1147-3.3, LTC1147L-3.3
VSENSE
– = VOUT + 100mV (Forced)
25
mV
VSENSE– = VOUT – 100mV (Forced)
130
150
170
mV
LTC1147–5
VSENSE
– = VOUT + 100mV (Forced)
25
mV
VSENSE– = VOUT – 100mV (Forced)
130
150
170
mV
LTC1147L
VSENSE
– = 5V, V6 = VOUT/4 + 25mV (Forced)
25
mV
VSENSE– = 5V, V6 = VOUT/4 – 25mV (Forced)
130
150
170
mV
V6
SHDN Pin Threshold
LTC1147-3.3/LTC1147-5/LTC1147L-3.3
0.5
0.8
2
V
I6
SHDN Pin Input Current
LTC1147-3.3/LTC1147-5/LTC1147L-3.3
0V < VSHDN < 8V, VIN = 16V
1.2
5
A
I2
CT Pin Discharge Current
VOUT in Regulation, VSENSE
– = VOUT
50
70
90
A
VOUT = 0V
2
10
A
tOFF
Off-Time (Note 3)
CT = 390pF, ILOAD = 700mA
4
5
6
s
tr, tf
Driver Output Transition Times
CL = 3000pF (Pin 8), VIN = 6V
100
200
ns
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V6
Feedback Voltage (LTC1147L)
VIN = 9V
q
1.20
1.25
1.30
V
VOUT
Regulated Output Voltage
VIN = 9V
LTC1147-3.3/LTC1147L-3.3
ILOAD = 700mA
q
3.17
3.33
3.43
V
LTC1147-5
ILOAD = 700mA
q
4.85
5.05
5.20
V
IQ
Input DC Supply Current (Note 2)
(Note 5)
LTC1147 Series
Normal Mode
4V < VIN < 12V
1.6
2.4
mA
Sleep Mode
4V < VIN < 12V
160
260
A
Sleep Mode (LTC1147-5)
5V < VIN < 12V
160
260
A
Shutdown
VSHDN = 2.1V, 4V < VIN < 12V
10
22
A
LTC1147L Series
Normal Mode
3.5V < VIN < 12V
1.6
2.4
mA
Sleep Mode
3.5V < VIN < 12V
160
260
A
Shutdown (LTC1147L-3.3)
VSHDN = 2.1V, 3.5V < VIN < 12V
10
22
A
V5 – V4
Current Sense Threshold Voltage (Note 6)
LTC1147-3.3
VSENSE– = VOUT + 100mV (Forced)
25
mV
VSENSE– = VOUT – 100mV (Forced)
q
125
150
185
mV
LTC1147-5
VSENSE– = VOUT + 100mV (Forced)
25
mV
VSENSE– = VOUT – 100mV (Forced)
q
125
150
185
mV
LTC1147L
VSENSE– = 5V, 6V = VOUT/4 + 25mV (Forced)
25
mV
VSENSE– = 5V, 6V = VOUT/4 – 25mV (Forced)
125
150
185
mV
V6
SHDN Pin Threshold
LTC1147-3.3/LTC1147-5/LTC1147L-3.3
0V < VSHDN < 8V, VIN = 16V
0.5
0.8
2
V
tOFF
Off-Time (Note 3)
CT = 390pF, ILOAD = 700mA
3.8
5
6.5
s
The q denotes specifications which apply over the full specified
temperature range.
Note 1: TJ is calculated from the ambient temperature TA and power
dissipation PD according to the following formulas:
LTC1147CN8-3.3/LTC1147CN8-5: TJ = TA + (PD)(110°C/W)
LTC1147LIS/LTC1147IS8/LTC1147LCS/
LTC1147CS8-3.3/LTC1147CS8-5: TJ = TA + (PD)(150°C/W)
Note 2: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 3: In applications where RSENSE is placed at ground potential, the off-
time increases approximately 40%.
Note 4: The LTC1147C is guaranteed to meet specified performance from
0
°C to 70°C and is designed, characterized and expected to meet these
extended temperature limits, but is not tested at – 40
°C and 85°C. The
LTC1147I is guaranteed to meet the extended temperature limits.
Note 5: The LTC1147L/LTC1147L-3.3 allow operation to VIN = 3.5V.
Note 6: The LTC1147L is tested with external feedback resistors resulting
in a nominal output voltage of 2.5V.
–40
°C ≤ TA ≤ 85°C (Note 4), VIN = 10V, unless otherwise noted.
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| LTC1147LIS8 | 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(biāo)準(zhǔn)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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| LTC1147LIS8#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(biāo)準(zhǔn)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) |
| LTC1147LIS8#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(biāo)準(zhǔn)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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